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Llyn Eigiau Reservoir 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Llyn Eigiau Reservoir

Gwynedd, United Kingdom

Long range weather outlook for Llyn Eigiau Reservoir includes 14 day forecast summary:

Taking a look at Llyn Eigiau Reservoir over the coming two weeks and the average daytime maximum temperature will be around 14°C, with a high for the two weeks of 21°C expected on the afternoon of Saturday 21st. The mean minimum temperature will be 6°C, dipping to its lowest on the morning of Friday 27th at 4°C. The next 14 days will have some days seeing a little precipitation and some days with rain. The indicators are that Thursday 26th will have the most precipitation with an accumulation of around 11.0mm. On the whole winds are likely to be moderate. Expect the strongest wind on the afternoon of Thursday 26th, coming from a westerly direction, and reaching around 31mph. However, the forecast suggests maximum gusts on Tuesday morning.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Thu 19
Apr
18:00

WSW
WSW

5 / 7 mph 60 / 59°F 82% 1023 mb
Low level cloud: 4%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: low
3%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

SW
SW

6 / 12 mph 49 / 47°F 95% 1024 mb
Low level cloud: 13%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
14%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Fri 20
Apr
00:00

SW
SW

7 / 14 mph 47 / 44°F 95% 1025 mb
Low level cloud: 6%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
7%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

SW
SW

7 / 15 mph 45 / 41°F 93% 1024 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

SW
SW

7 / 15 mph 45 / 42°F 89% 1025 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: medium
9%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

WNW
WNW

6 / 7 mph 58 / 55°F 74% 1026 mb
Low level cloud: 4%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
5%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

NW
NW

6 / 7 mph 61 / 60°F 64% 1026 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

NNW
NNW

5 / 6 mph 61 / 60°F 62% 1025 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

NNE
NNE

4 / 5 mph 55 / 53°F 71% 1025 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

SE
SE

3 / 7 mph 44 / 42°F 79% 1025 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Sat 21
Apr
00:00

SE
SE

4 / 8 mph 43 / 40°F 78% 1025 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 2%
Most Significant Cloud Type: medium
3%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

SE
SE

5 / 11 mph 43 / 40°F 75% 1024 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 1%
Most Significant Cloud Type: medium
6%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

SE
SE

6 / 12 mph 44 / 41°F 73% 1023 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 1%
Most Significant Cloud Type: medium
9%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

SE
SE

6 / 7 mph 60 / 58°F 66% 1021 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 4%
Most Significant Cloud Type: medium
17%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

S
S

4 / 4 mph 70 / 68°F 62% 1019 mb
Low level cloud: 16%
Mid level cloud: 7%
High level cloud: 32%
Most Significant Cloud Type: low
22%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

SW
SW

2 / 4 mph 68 / 65°F 73% 1016 mb
Low level cloud: 17%
Mid level cloud: 14%
High level cloud: 33%
Most Significant Cloud Type: low
25%
Expect 0.03 In of precipitation over the past 3 hours.
0.03 In
18:00

W
W

3 / 5 mph 63 / 61°F 85% 1014 mb
Low level cloud: 5%
Mid level cloud: 17%
High level cloud: 33%
Most Significant Cloud Type: medium
32%
Expect 0.05 In of precipitation over the past 3 hours.
0.05 In
21:00

SSW
SSW

5 / 11 mph 52 / 51°F 94% 1013 mb
Low level cloud: 15%
Mid level cloud: 11%
High level cloud: 91%
Most Significant Cloud Type: low
29%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
Sun 22
Apr
00:00

SW
SW

8 / 15 mph 54 / 51°F 96% 1012 mb
Low level cloud: 60%
Mid level cloud: 7%
High level cloud: 70%
Most Significant Cloud Type: low
71%
Expect 0.04 In of precipitation over the past 3 hours.
0.04 In
03:00

SW
SW

9 / 15 mph 53 / 50°F 94% 1011 mb
Low level cloud: 38%
Mid level cloud: 23%
High level cloud: 95%
Most Significant Cloud Type: low
57%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

SW
SW

9 / 13 mph 50 / 47°F 93% 1010 mb
Low level cloud: 19%
Mid level cloud: 70%
High level cloud: 97%
Most Significant Cloud Type: medium
100%
Expect 0.03 In of precipitation over the past 3 hours.
0.03 In
09:00

WSW
WSW

8 / 9 mph 56 / 53°F 76% 1010 mb
Low level cloud: 3%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
53%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

W
W

8 / 10 mph 54 / 51°F 80% 1010 mb
Low level cloud: 74%
Mid level cloud: 25%
High level cloud: 0%
Most Significant Cloud Type: low
82%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

WSW
WSW

11 / 13 mph 57 / 54°F 68% 1010 mb
Low level cloud: 21%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
23%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

WSW
WSW

12 / 15 mph 52 / 47°F 83% 1010 mb
Low level cloud: 18%
Mid level cloud: 73%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
21:00

SW
SW

11 / 18 mph 47 / 42°F 90% 1012 mb
Low level cloud: 16%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: low
25%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
Mon 23
Apr
00:00

WSW
WSW

11 / 20 mph 45 / 39°F 89% 1013 mb
Low level cloud: 6%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
8%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

WSW
WSW

11 / 19 mph 43 / 37°F 91% 1014 mb
Low level cloud: 26%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: low
30%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

WSW
WSW

13 / 19 mph 45 / 38°F 89% 1014 mb
Low level cloud: 34%
Mid level cloud: 3%
High level cloud: 2%
Most Significant Cloud Type: low
35%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

WSW
WSW

14 / 16 mph 51 / 46°F 77% 1015 mb
Low level cloud: 14%
Mid level cloud: 30%
High level cloud: 90%
Most Significant Cloud Type: low
35%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

SW
SW

17 / 19 mph 57 / 52°F 72% 1014 mb
Low level cloud: 32%
Mid level cloud: 46%
High level cloud: 39%
Most Significant Cloud Type: low
53%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

SW
SW

17 / 20 mph 53 / 47°F 87% 1014 mb
Low level cloud: 50%
Mid level cloud: 73%
High level cloud: 78%
Most Significant Cloud Type: low
85%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

WSW
WSW

16 / 23 mph 53 / 47°F 91% 1014 mb
Low level cloud: 41%
Mid level cloud: 83%
High level cloud: 89%
Most Significant Cloud Type: low
80%
Expect 0.03 In of precipitation over the past 3 hours.
0.03 In
21:00

WSW
WSW

10 / 16 mph 49 / 45°F 95% 1015 mb
Low level cloud: 35%
Mid level cloud: 45%
High level cloud: 51%
Most Significant Cloud Type: low
56%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Tue 24
Apr
00:00

W
W

5 / 8 mph 47 / 46°F 97% 1014 mb
Low level cloud: 89%
Mid level cloud: 76%
High level cloud: 91%
Most Significant Cloud Type: low
100%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
03:00

ESE
ESE

1 / 2 mph 46 / 46°F 98% 1012 mb
Low level cloud: 88%
Mid level cloud: 74%
High level cloud: 97%
Most Significant Cloud Type: low
100%
Expect 0.08 In of precipitation over the past 3 hours.
0.08 In
06:00

SSW
SSW

9 / 18 mph 44 / 40°F 97% 1010 mb
Low level cloud: 87%
Mid level cloud: 70%
High level cloud: 45%
Most Significant Cloud Type: low
100%
Expect 0.04 In of precipitation over the past 3 hours.
0.04 In
09:00

SW
SW

19 / 38 mph 48 / 41°F 95% 1008 mb
Low level cloud: 86%
Mid level cloud: 72%
High level cloud: 91%
Most Significant Cloud Type: low
100%
Expect 0.14 In of precipitation over the past 3 hours.
0.14 In
12:00

SW
SW

19 / 25 mph 51 / 46°F 96% 1007 mb
Low level cloud: 86%
Mid level cloud: 44%
High level cloud: 89%
Most Significant Cloud Type: low
100%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
15:00

W
W

17 / 19 mph 53 / 48°F 92% 1007 mb
Low level cloud: 89%
Mid level cloud: 16%
High level cloud: 33%
Most Significant Cloud Type: low
98%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
18:00

W
W

11 / 15 mph 52 / 47°F 82% 1008 mb
Low level cloud: 27%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: low
33%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

WSW
WSW

9 / 14 mph 49 / 45°F 88% 1011 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: medium
13%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Wed 25
Apr
00:00

W
W

12 / 19 mph 45 / 39°F 90% 1011 mb
Low level cloud: 14%
Mid level cloud: 41%
High level cloud: 0%
Most Significant Cloud Type: medium
79%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

WSW
WSW

12 / 19 mph 43 / 37°F 88% 1011 mb
Low level cloud: 24%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: low
34%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

WSW
WSW

14 / 19 mph 45 / 38°F 85% 1012 mb
Low level cloud: 9%
Mid level cloud: 37%
High level cloud: 0%
Most Significant Cloud Type: medium
61%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

W
W

19 / 23 mph 49 / 42°F 77% 1013 mb
Low level cloud: 7%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
66%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
12:00

WSW
WSW

21 / 25 mph 53 / 46°F 63% 1013 mb
Low level cloud: 2%
Mid level cloud: 47%
High level cloud: 0%
Most Significant Cloud Type: medium
52%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
15:00

WSW
WSW

20 / 24 mph 53 / 47°F 63% 1014 mb
Low level cloud: 13%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: medium
82%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
18:00

WSW
WSW

17 / 25 mph 49 / 43°F 74% 1015 mb
Low level cloud: 30%
Mid level cloud: 69%
High level cloud: 17%
Most Significant Cloud Type: low
56%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
21:00

WSW
WSW

13 / 25 mph 44 / 38°F 81% 1017 mb
Low level cloud: 15%
Mid level cloud: 54%
High level cloud: 82%
Most Significant Cloud Type: medium
98%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Thu 26
Apr
00:00

WSW
WSW

17 / 26 mph 43 / 35°F 84% 1010 mb
Low level cloud: 68%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: low
73%
0.02 In
06:00

WSW
WSW

13 / 15 mph 46 / 40°F 86% 1014 mb
Low level cloud: 18%
Mid level cloud: 12%
High level cloud: 92%
Most Significant Cloud Type: low
33%
0.00 In
12:00

NW
NW

15 / 17 mph 51 / 46°F 60% 1010 mb
Low level cloud: 54%
Mid level cloud: 2%
High level cloud: 4%
Most Significant Cloud Type: low
55%
0.01 In
18:00

W
W

12 / 15 mph 52 / 48°F 72% 1019 mb
Low level cloud: 29%
Mid level cloud: 31%
High level cloud: 78%
Most Significant Cloud Type: low
49%
0.01 In
Fri 27
Apr
00:00

WSW
WSW

14 / 22 mph 43 / 37°F 84% 1013 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 51%
Most Significant Cloud Type: medium
7%
0.00 In
06:00

SW
SW

9 / 14 mph 41 / 36°F 87% 1012 mb
Low level cloud: 7%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
66%
0.01 In
12:00

SW
SW

11 / 12 mph 51 / 47°F 65% 1023 mb
Low level cloud: 11%
Mid level cloud: 75%
High level cloud: 71%
Most Significant Cloud Type: medium
100%
0.00 In
18:00

ENE
ENE

8 / 9 mph 50 / 47°F 86% 1015 mb
Low level cloud: 62%
Mid level cloud: 91%
High level cloud: 52%
Most Significant Cloud Type: low
100%
0.03 In
Sat 28
Apr
00:00

SW
SW

12 / 17 mph 45 / 39°F 90% 1013 mb
Low level cloud: 57%
Mid level cloud: 81%
High level cloud: 94%
Most Significant Cloud Type: low
96%
0.01 In
06:00

S
S

4 / 5 mph 46 / 44°F 96% 1007 mb
Low level cloud: 76%
Mid level cloud: 70%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.01 In
12:00

SW
SW

11 / 12 mph 48 / 43°F 93% 1006 mb
Low level cloud: 64%
Mid level cloud: 91%
High level cloud: 93%
Most Significant Cloud Type: low
100%
0.13 In
18:00

WNW
WNW

17 / 21 mph 44 / 37°F 92% 1007 mb
Low level cloud: 94%
Mid level cloud: 80%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.04 In
Sun 29
Apr
00:00

WNW
WNW

11 / 18 mph 42 / 36°F 87% 1005 mb
Low level cloud: 51%
Mid level cloud: 33%
High level cloud: 63%
Most Significant Cloud Type: low
70%
0.01 In
06:00

NW
NW

13 / 17 mph 43 / 36°F 91% 1012 mb
Low level cloud: 92%
Mid level cloud: 79%
High level cloud: 4%
Most Significant Cloud Type: low
100%
0.10 In
12:00

WNW
WNW

13 / 16 mph 50 / 45°F 65% 1005 mb
Low level cloud: 4%
Mid level cloud: 6%
High level cloud: 10%
Most Significant Cloud Type: low
6%
0.03 In
18:00

SW
SW

11 / 14 mph 50 / 46°F 73% 1009 mb
Low level cloud: 10%
Mid level cloud: 45%
High level cloud: 3%
Most Significant Cloud Type: medium
72%
0.04 In
Mon 30
Apr
00:00

WNW
WNW

7 / 13 mph 40 / 35°F 90% 1005 mb
Low level cloud: 25%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
40%
0.07 In
06:00

SSE
SSE

13 / 19 mph 42 / 35°F 89% 999 mb
Low level cloud: 61%
Mid level cloud: 42%
High level cloud: 80%
Most Significant Cloud Type: low
85%
0.02 In
12:00

NW
NW

16 / 27 mph 48 / 41°F 87% 1005 mb
Low level cloud: 64%
Mid level cloud: 40%
High level cloud: 2%
Most Significant Cloud Type: low
78%
0.15 In
18:00

SSW
SSW

9 / 10 mph 48 / 44°F 90% 993 mb
Low level cloud: 31%
Mid level cloud: 51%
High level cloud: 65%
Most Significant Cloud Type: low
56%
0.40 In
Tue 01
May
00:00

N
N

14 / 24 mph 43 / 36°F 86% 1009 mb
Low level cloud: 14%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
84%
0.08 In
06:00

SE
SE

13 / 19 mph 41 / 33°F 89% 989 mb
Low level cloud: 33%
Mid level cloud: 46%
High level cloud: 21%
Most Significant Cloud Type: low
51%
0.01 In
12:00

N
N

12 / 16 mph 45 / 39°F 76% 1017 mb
Low level cloud: 74%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: low
81%
0.06 In
18:00

SSE
SSE

13 / 25 mph 49 / 44°F 85% 987 mb
Low level cloud: 14%
Mid level cloud: 23%
High level cloud: 58%
Most Significant Cloud Type: low
28%
0.21 In
Wed 02
May
00:00

N
N

3 / 5 mph 36 / 35°F 89% 1023 mb
Low level cloud: 12%
Mid level cloud: 10%
High level cloud: 32%
Most Significant Cloud Type: low
19%
0.01 In
06:00

SSE
SSE

13 / 19 mph 45 / 39°F 88% 990 mb
Low level cloud: 53%
Mid level cloud: 24%
High level cloud: 16%
Most Significant Cloud Type: low
63%
0.03 In
12:00

W
W

7 / 9 mph 52 / 50°F 59% 1024 mb
Low level cloud: 6%
Mid level cloud: 22%
High level cloud: 32%
Most Significant Cloud Type: medium
38%
0.00 In
18:00

S
S

12 / 21 mph 49 / 44°F 81% 994 mb
Low level cloud: 10%
Mid level cloud: 14%
High level cloud: 58%
Most Significant Cloud Type: low
22%
0.17 In
Thu 03
May
00:00

SW
SW

11 / 14 mph 46 / 41°F 92% 1026 mb
Low level cloud: 75%
Mid level cloud: 67%
High level cloud: 37%
Most Significant Cloud Type: low
100%
0.01 In
06:00

SSE
SSE

14 / 16 mph 48 / 42°F 86% 996 mb
Low level cloud: 54%
Mid level cloud: 67%
High level cloud: 89%
Most Significant Cloud Type: low
88%
0.01 In
12:00

NNW
NNW

9 / 11 mph 52 / 49°F 85% 1028 mb
Low level cloud: 40%
Mid level cloud: 6%
High level cloud: 27%
Most Significant Cloud Type: low
45%
0.13 In
18:00

SW
SW

17 / 24 mph 52 / 46°F 71% 1001 mb
Low level cloud: 2%
Mid level cloud: 25%
High level cloud: 32%
Most Significant Cloud Type: medium
31%
0.06 In
Fri 04
May
00:00

NNW
NNW

5 / 11 mph 40 / 37°F 88% 1034 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 21%
Most Significant Cloud Type: medium
2%
0.00 In
06:00

SSW
SSW

6 / 9 mph 44 / 40°F 93% 1010 mb
Low level cloud: 29%
Mid level cloud: 11%
High level cloud: 4%
Most Significant Cloud Type: low
32%
0.00 In
12:00

NNW
NNW

5 / 6 mph 58 / 58°F 53% 1035 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 10%
Most Significant Cloud Type: medium
6%
0.00 In
18:00

NNE
NNE

10 / 11 mph 54 / 51°F 72% 1013 mb
Low level cloud: 16%
Mid level cloud: 9%
High level cloud: 57%
Most Significant Cloud Type: low
25%
0.00 In

Other Locations Near to Llyn Eigiau Reservoir

The day label given represents the local day relative to the local time for the location you are looking at.
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Day

This time is corrected for local time zones and where possible for daylight saving times.
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Local Time

The wind direction we use on this page is the direction the wind is coming from, given in a 16 point compass format.
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Dir

This refers to the sustained average wind speed, normally averaged over a period of 10 minutes for up to 3 hrs.
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Speed/
Gust

Temperature from our forecast perspective are fairly well defined, they are what we would expect to measure in a standard meteorological screen (in other words, shaded and well ventilated) at 2 metres above ground level.
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Temp/
Feels Like

The relative humidity is the percent of saturation humidity, generally calculated in relation to saturated vapour density.
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Humidity

The value given is a total predicted for the previous 3 hrs and includes the time of the forecast being looked at.
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Precip Amount

The total amount of cloud as a percentage is derived from looking at cloud cover throughout the atmosphere and estimating how these combine when looked at from the ground.
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Cloud Amount

Here we try to capture the feel of the weather as an image – it will never be perfect but is useful for a quick overview.
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Weather

When we measure for forecast air pressure we are normally doing this relative to a certain height and most commonly relative to Mean Sea Level.
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Pressure