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Chweffordd 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Chweffordd

Gwynedd, United Kingdom

Long range weather outlook for Chweffordd includes 14 day forecast summary:

Over the next 14 days the Chweffordd forecast suggests the average daytime maximum temperature will be around 13°C, with a high for the two weeks of 21°C expected on the afternoon of Saturday 21st. The average minimum temperature will be 7°C, dipping to its lowest on the morning of Friday 27th at 5°C. Expect the next 14 days 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 10.0mm. On the whole winds are likely to be moderate. The strongest wind will be experienced on the afternoon of Thursday 26th, coming from a south westerly direction, and reaching around 31mph. However, the maximum wind gusts are expected on Tuesday morning.

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

W
W

3 / 4 mph 63 / 61°F 82% 1023 mb
Low level cloud: 3%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
2%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

SW
SW

4 / 9 mph 51 / 50°F 95% 1024 mb
Low level cloud: 10%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
11%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Fri 20
Apr
00:00

SW
SW

6 / 12 mph 49 / 47°F 94% 1025 mb
Low level cloud: 4%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
5%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

SW
SW

6 / 13 mph 46 / 43°F 92% 1024 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

SW
SW

6 / 14 mph 46 / 43°F 87% 1025 mb
Low level cloud: 0%
Mid level cloud: 9%
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 / 8 mph 57 / 55°F 73% 1025 mb
Low level cloud: 1%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

NNW
NNW

6 / 7 mph 60 / 58°F 63% 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

N
N

6 / 7 mph 60 / 58°F 61% 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 57 / 56°F 70% 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 / 6 mph 49 / 49°F 77% 1025 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 1%
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

SSE
SSE

4 / 8 mph 45 / 43°F 76% 1025 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 3%
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 45 / 42°F 73% 1024 mb
Low level cloud: 0%
Mid level cloud: 7%
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 46 / 43°F 72% 1023 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 1%
Most Significant Cloud Type: medium
10%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

SE
SE

7 / 8 mph 59 / 57°F 65% 1021 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 3%
Most Significant Cloud Type: medium
16%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

SSE
SSE

4 / 5 mph 70 / 67°F 62% 1019 mb
Low level cloud: 15%
Mid level cloud: 7%
High level cloud: 22%
Most Significant Cloud Type: low
19%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

SSW
SSW

3 / 4 mph 67 / 65°F 75% 1016 mb
Low level cloud: 14%
Mid level cloud: 12%
High level cloud: 31%
Most Significant Cloud Type: low
21%
Expect 0.05 In of precipitation over the past 3 hours.
0.05 In
18:00

W
W

3 / 5 mph 64 / 62°F 86% 1014 mb
Low level cloud: 1%
Mid level cloud: 15%
High level cloud: 24%
Most Significant Cloud Type: medium
18%
Expect 0.06 In of precipitation over the past 3 hours.
0.06 In
21:00

SSW
SSW

5 / 11 mph 54 / 53°F 93% 1013 mb
Low level cloud: 10%
Mid level cloud: 11%
High level cloud: 95%
Most Significant Cloud Type: medium
42%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
Sun 22
Apr
00:00

SW
SW

7 / 14 mph 54 / 52°F 96% 1012 mb
Low level cloud: 52%
Mid level cloud: 7%
High level cloud: 72%
Most Significant Cloud Type: low
63%
Expect 0.05 In of precipitation over the past 3 hours.
0.05 In
03:00

SW
SW

8 / 14 mph 54 / 51°F 94% 1011 mb
Low level cloud: 44%
Mid level cloud: 16%
High level cloud: 98%
Most Significant Cloud Type: low
61%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

WSW
WSW

7 / 12 mph 50 / 47°F 94% 1010 mb
Low level cloud: 22%
Mid level cloud: 64%
High level cloud: 99%
Most Significant Cloud Type: medium
100%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
09:00

WSW
WSW

7 / 8 mph 55 / 52°F 75% 1010 mb
Low level cloud: 0%
Mid level cloud: 31%
High level cloud: 0%
Most Significant Cloud Type: medium
30%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

W
W

8 / 9 mph 53 / 50°F 78% 1010 mb
Low level cloud: 69%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: low
76%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

W
W

11 / 12 mph 56 / 53°F 67% 1010 mb
Low level cloud: 18%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
21%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

WSW
WSW

12 / 16 mph 51 / 47°F 80% 1010 mb
Low level cloud: 11%
Mid level cloud: 69%
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 48 / 43°F 88% 1012 mb
Low level cloud: 10%
Mid level cloud: 26%
High level cloud: 0%
Most Significant Cloud Type: low
19%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Mon 23
Apr
00:00

WSW
WSW

11 / 20 mph 45 / 40°F 88% 1013 mb
Low level cloud: 3%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
5%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

WSW
WSW

11 / 19 mph 44 / 38°F 90% 1014 mb
Low level cloud: 22%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: low
25%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

WSW
WSW

13 / 19 mph 45 / 38°F 87% 1014 mb
Low level cloud: 28%
Mid level cloud: 3%
High level cloud: 1%
Most Significant Cloud Type: low
29%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

WSW
WSW

14 / 16 mph 51 / 45°F 74% 1015 mb
Low level cloud: 12%
Mid level cloud: 26%
High level cloud: 87%
Most Significant Cloud Type: low
31%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

SW
SW

15 / 18 mph 56 / 52°F 69% 1014 mb
Low level cloud: 23%
Mid level cloud: 44%
High level cloud: 52%
Most Significant Cloud Type: low
44%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

WSW
WSW

17 / 21 mph 53 / 48°F 84% 1014 mb
Low level cloud: 38%
Mid level cloud: 72%
High level cloud: 75%
Most Significant Cloud Type: low
72%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

WSW
WSW

16 / 24 mph 53 / 47°F 89% 1014 mb
Low level cloud: 36%
Mid level cloud: 79%
High level cloud: 85%
Most Significant Cloud Type: low
74%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
21:00

WSW
WSW

9 / 17 mph 49 / 45°F 94% 1015 mb
Low level cloud: 31%
Mid level cloud: 46%
High level cloud: 40%
Most Significant Cloud Type: low
52%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Tue 24
Apr
00:00

W
W

4 / 7 mph 48 / 47°F 97% 1014 mb
Low level cloud: 89%
Mid level cloud: 72%
High level cloud: 88%
Most Significant Cloud Type: low
100%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
03:00

E
E

2 / 2 mph 47 / 47°F 98% 1012 mb
Low level cloud: 88%
Mid level cloud: 68%
High level cloud: 96%
Most Significant Cloud Type: low
100%
Expect 0.06 In of precipitation over the past 3 hours.
0.06 In
06:00

SSW
SSW

7 / 15 mph 45 / 41°F 96% 1010 mb
Low level cloud: 86%
Mid level cloud: 68%
High level cloud: 45%
Most Significant Cloud Type: low
100%
Expect 0.03 In of precipitation over the past 3 hours.
0.03 In
09:00

SW
SW

18 / 37 mph 48 / 42°F 93% 1008 mb
Low level cloud: 82%
Mid level cloud: 66%
High level cloud: 88%
Most Significant Cloud Type: low
100%
Expect 0.09 In of precipitation over the past 3 hours.
0.09 In
12:00

SW
SW

19 / 25 mph 51 / 46°F 94% 1007 mb
Low level cloud: 85%
Mid level cloud: 46%
High level cloud: 86%
Most Significant Cloud Type: low
100%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
15:00

W
W

17 / 21 mph 53 / 48°F 90% 1007 mb
Low level cloud: 89%
Mid level cloud: 16%
High level cloud: 33%
Most Significant Cloud Type: low
98%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

W
W

11 / 15 mph 52 / 47°F 81% 1008 mb
Low level cloud: 32%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: low
38%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

WSW
WSW

9 / 14 mph 49 / 45°F 87% 1011 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: medium
12%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Wed 25
Apr
00:00

W
W

12 / 17 mph 46 / 41°F 89% 1011 mb
Low level cloud: 13%
Mid level cloud: 36%
High level cloud: 0%
Most Significant Cloud Type: low
25%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

WSW
WSW

12 / 17 mph 45 / 38°F 86% 1011 mb
Low level cloud: 16%
Mid level cloud: 26%
High level cloud: 0%
Most Significant Cloud Type: low
24%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

WSW
WSW

14 / 22 mph 44 / 37°F 84% 1012 mb
Low level cloud: 7%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: medium
45%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

W
W

18 / 25 mph 47 / 40°F 77% 1013 mb
Low level cloud: 6%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: medium
63%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
12:00

WSW
WSW

20 / 24 mph 51 / 44°F 61% 1013 mb
Low level cloud: 1%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: medium
47%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
15:00

WSW
WSW

19 / 23 mph 53 / 46°F 60% 1014 mb
Low level cloud: 10%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: medium
70%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
18:00

W
W

17 / 22 mph 51 / 44°F 72% 1015 mb
Low level cloud: 25%
Mid level cloud: 62%
High level cloud: 16%
Most Significant Cloud Type: low
48%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
21:00

WSW
WSW

13 / 19 mph 48 / 42°F 80% 1017 mb
Low level cloud: 9%
Mid level cloud: 50%
High level cloud: 75%
Most Significant Cloud Type: medium
78%
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 / 24 mph 44 / 37°F 82% 1010 mb
Low level cloud: 66%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
71%
0.01 In
06:00

WSW
WSW

12 / 16 mph 46 / 40°F 84% 1014 mb
Low level cloud: 16%
Mid level cloud: 12%
High level cloud: 90%
Most Significant Cloud Type: low
30%
0.00 In
12:00

NW
NW

15 / 17 mph 50 / 45°F 59% 1010 mb
Low level cloud: 52%
Mid level cloud: 1%
High level cloud: 3%
Most Significant Cloud Type: low
52%
0.01 In
18:00

W
W

13 / 16 mph 52 / 48°F 71% 1019 mb
Low level cloud: 29%
Mid level cloud: 28%
High level cloud: 75%
Most Significant Cloud Type: low
47%
0.01 In
Fri 27
Apr
00:00

WSW
WSW

14 / 22 mph 44 / 37°F 82% 1013 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 52%
Most Significant Cloud Type: medium
6%
0.00 In
06:00

SW
SW

8 / 14 mph 42 / 36°F 86% 1012 mb
Low level cloud: 1%
Mid level cloud: 42%
High level cloud: 0%
Most Significant Cloud Type: medium
45%
0.00 In
12:00

SW
SW

9 / 11 mph 51 / 47°F 62% 1023 mb
Low level cloud: 4%
Mid level cloud: 68%
High level cloud: 68%
Most Significant Cloud Type: medium
81%
0.00 In
18:00

ENE
ENE

7 / 8 mph 50 / 47°F 87% 1015 mb
Low level cloud: 57%
Mid level cloud: 88%
High level cloud: 56%
Most Significant Cloud Type: low
94%
0.03 In
Sat 28
Apr
00:00

SW
SW

11 / 17 mph 45 / 39°F 89% 1013 mb
Low level cloud: 41%
Mid level cloud: 78%
High level cloud: 92%
Most Significant Cloud Type: low
78%
0.01 In
06:00

SSE
SSE

4 / 5 mph 46 / 45°F 95% 1007 mb
Low level cloud: 71%
Mid level cloud: 68%
High level cloud: 0%
Most Significant Cloud Type: low
94%
0.01 In
12:00

SW
SW

11 / 12 mph 47 / 42°F 93% 1006 mb
Low level cloud: 63%
Mid level cloud: 91%
High level cloud: 97%
Most Significant Cloud Type: low
100%
0.09 In
18:00

WNW
WNW

17 / 23 mph 44 / 36°F 91% 1007 mb
Low level cloud: 92%
Mid level cloud: 71%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.03 In
Sun 29
Apr
00:00

WNW
WNW

12 / 18 mph 42 / 36°F 86% 1005 mb
Low level cloud: 49%
Mid level cloud: 31%
High level cloud: 100%
Most Significant Cloud Type: low
71%
0.01 In
06:00

NW
NW

13 / 18 mph 42 / 35°F 91% 1012 mb
Low level cloud: 92%
Mid level cloud: 79%
High level cloud: 6%
Most Significant Cloud Type: low
100%
0.08 In
12:00

WNW
WNW

13 / 16 mph 49 / 44°F 63% 1005 mb
Low level cloud: 2%
Mid level cloud: 6%
High level cloud: 10%
Most Significant Cloud Type: medium
11%
0.02 In
18:00

SW
SW

10 / 13 mph 49 / 45°F 74% 1009 mb
Low level cloud: 9%
Mid level cloud: 47%
High level cloud: 3%
Most Significant Cloud Type: medium
72%
0.05 In
Mon 30
Apr
00:00

WNW
WNW

7 / 13 mph 39 / 35°F 91% 1005 mb
Low level cloud: 28%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
44%
0.07 In
06:00

SSE
SSE

13 / 20 mph 41 / 34°F 90% 1000 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 / 26 mph 47 / 40°F 88% 1005 mb
Low level cloud: 64%
Mid level cloud: 35%
High level cloud: 2%
Most Significant Cloud Type: low
75%
0.14 In
18:00

SSW
SSW

8 / 10 mph 48 / 44°F 92% 993 mb
Low level cloud: 42%
Mid level cloud: 53%
High level cloud: 75%
Most Significant Cloud Type: low
69%
0.39 In
Tue 01
May
00:00

N
N

13 / 23 mph 42 / 35°F 87% 1009 mb
Low level cloud: 9%
Mid level cloud: 46%
High level cloud: 1%
Most Significant Cloud Type: medium
70%
0.08 In
06:00

SE
SE

13 / 19 mph 40 / 32°F 90% 989 mb
Low level cloud: 31%
Mid level cloud: 32%
High level cloud: 16%
Most Significant Cloud Type: low
44%
0.02 In
12:00

N
N

12 / 16 mph 44 / 38°F 78% 1017 mb
Low level cloud: 76%
Mid level cloud: 26%
High level cloud: 0%
Most Significant Cloud Type: low
85%
0.07 In
18:00

SSE
SSE

13 / 24 mph 49 / 44°F 86% 987 mb
Low level cloud: 18%
Mid level cloud: 23%
High level cloud: 57%
Most Significant Cloud Type: low
32%
0.21 In
Wed 02
May
00:00

N
N

2 / 4 mph 39 / 39°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

14 / 20 mph 45 / 38°F 88% 991 mb
Low level cloud: 60%
Mid level cloud: 26%
High level cloud: 16%
Most Significant Cloud Type: low
70%
0.02 In
12:00

W
W

7 / 8 mph 52 / 49°F 58% 1024 mb
Low level cloud: 6%
Mid level cloud: 16%
High level cloud: 25%
Most Significant Cloud Type: low
14%
0.00 In
18:00

S
S

11 / 19 mph 48 / 44°F 82% 994 mb
Low level cloud: 10%
Mid level cloud: 16%
High level cloud: 65%
Most Significant Cloud Type: low
23%
0.19 In
Thu 03
May
00:00

SW
SW

10 / 15 mph 45 / 40°F 92% 1026 mb
Low level cloud: 73%
Mid level cloud: 67%
High level cloud: 36%
Most Significant Cloud Type: low
100%
0.01 In
06:00

SSE
SSE

14 / 16 mph 47 / 41°F 86% 996 mb
Low level cloud: 56%
Mid level cloud: 75%
High level cloud: 88%
Most Significant Cloud Type: low
92%
0.01 In
12:00

NW
NW

9 / 11 mph 51 / 48°F 87% 1028 mb
Low level cloud: 45%
Mid level cloud: 8%
High level cloud: 21%
Most Significant Cloud Type: low
50%
0.13 In
18:00

SW
SW

16 / 23 mph 51 / 46°F 71% 1001 mb
Low level cloud: 3%
Mid level cloud: 21%
High level cloud: 33%
Most Significant Cloud Type: medium
31%
0.07 In
Fri 04
May
00:00

NNW
NNW

5 / 11 mph 39 / 35°F 89% 1034 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 19%
Most Significant Cloud Type: medium
2%
0.00 In
06:00

SSW
SSW

6 / 9 mph 44 / 40°F 94% 1010 mb
Low level cloud: 35%
Mid level cloud: 12%
High level cloud: 3%
Most Significant Cloud Type: low
38%
0.00 In
12:00

N
N

5 / 6 mph 58 / 58°F 53% 1035 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 8%
Most Significant Cloud Type: medium
6%
0.00 In
18:00

NNE
NNE

9 / 11 mph 54 / 51°F 72% 1013 mb
Low level cloud: 22%
Mid level cloud: 9%
High level cloud: 59%
Most Significant Cloud Type: low
32%
0.00 In

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