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Porth-llwyd 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Porth-llwyd

Gwynedd, United Kingdom

Long range weather outlook for Porth-llwyd includes 14 day forecast summary:

The forecast for Porth-llwyd in the coming two weeks is predicting the average daytime maximum temperature will be around 17°C, with a high for the two weeks of 19°C expected on the evening of Thursday 26th. The mean minimum temperature will be 12°C, dipping to its lowest on the morning of Saturday 21st at 8°C. The next 14 days will have some days seeing a little precipitation and some days with rain. The current forecast indicates Friday 27th will have the most precipitation with an accumulation of around 3.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sat 21
Jul
15:00

WNW
WNW

6 / 13 mph 60 / 57°F 76% 1015 mb
Low level cloud: 53%
Mid level cloud: 13%
High level cloud: 33%
Most Significant Cloud Type: low
61%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

NW
NW

5 / 11 mph 58 / 56°F 77% 1016 mb
Low level cloud: 5%
Mid level cloud: 31%
High level cloud: 15%
Most Significant Cloud Type: medium
45%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

NW
NW

3 / 4 mph 60 / 59°F 85% 1017 mb
Low level cloud: 0%
Mid level cloud: 69%
High level cloud: 0%
Most Significant Cloud Type: medium
68%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Sun 22
Jul
00:00

WSW
WSW

3 / 4 mph 58 / 59°F 84% 1017 mb
Low level cloud: 34%
Mid level cloud: 71%
High level cloud: 0%
Most Significant Cloud Type: low
59%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

SW
SW

4 / 7 mph 58 / 58°F 88% 1017 mb
Low level cloud: 89%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

WSW
WSW

4 / 9 mph 53 / 52°F 93% 1017 mb
Low level cloud: 94%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

W
W

4 / 9 mph 57 / 57°F 87% 1017 mb
Low level cloud: 90%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

W
W

5 / 11 mph 63 / 62°F 78% 1017 mb
Low level cloud: 77%
Mid level cloud: 34%
High level cloud: 0%
Most Significant Cloud Type: low
88%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

W
W

6 / 14 mph 66 / 64°F 77% 1017 mb
Low level cloud: 66%
Mid level cloud: 36%
High level cloud: 0%
Most Significant Cloud Type: low
78%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
18:00

WSW
WSW

5 / 10 mph 66 / 63°F 80% 1016 mb
Low level cloud: 29%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: low
37%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

SSW
SSW

4 / 8 mph 65 / 62°F 96% 1017 mb
Low level cloud: 27%
Mid level cloud: 46%
High level cloud: 6%
Most Significant Cloud Type: low
43%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Mon 23
Jul
00:00

S
S

6 / 11 mph 60 / 60°F 97% 1017 mb
Low level cloud: 33%
Mid level cloud: 44%
High level cloud: 16%
Most Significant Cloud Type: low
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

S
S

7 / 11 mph 61 / 61°F 97% 1017 mb
Low level cloud: 86%
Mid level cloud: 44%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
06:00

SSW
SSW

9 / 18 mph 56 / 54°F 98% 1016 mb
Low level cloud: 85%
Mid level cloud: 43%
High level cloud: 5%
Most Significant Cloud Type: low
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

SSW
SSW

10 / 22 mph 58 / 55°F 94% 1016 mb
Low level cloud: 88%
Mid level cloud: 43%
High level cloud: 7%
Most Significant Cloud Type: low
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

SSW
SSW

11 / 23 mph 57 / 55°F 94% 1015 mb
Low level cloud: 90%
Mid level cloud: 44%
High level cloud: 16%
Most Significant Cloud Type: low
100%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
15:00

SSW
SSW

12 / 25 mph 59 / 56°F 88% 1014 mb
Low level cloud: 89%
Mid level cloud: 21%
High level cloud: 1%
Most Significant Cloud Type: low
96%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
18:00

SSW
SSW

13 / 26 mph 61 / 59°F 82% 1014 mb
Low level cloud: 51%
Mid level cloud: 10%
High level cloud: 1%
Most Significant Cloud Type: low
54%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

SSW
SSW

8 / 13 mph 62 / 60°F 96% 1014 mb
Low level cloud: 27%
Mid level cloud: 12%
High level cloud: 1%
Most Significant Cloud Type: low
31%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Tue 24
Jul
00:00

SSW
SSW

8 / 14 mph 59 / 59°F 97% 1014 mb
Low level cloud: 53%
Mid level cloud: 9%
High level cloud: 92%
Most Significant Cloud Type: low
66%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

SSW
SSW

9 / 18 mph 53 / 50°F 98% 1014 mb
Low level cloud: 92%
Mid level cloud: 5%
High level cloud: 4%
Most Significant Cloud Type: low
94%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

SW
SW

7 / 14 mph 53 / 51°F 98% 1013 mb
Low level cloud: 90%
Mid level cloud: 43%
High level cloud: 6%
Most Significant Cloud Type: low
100%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
09:00

WSW
WSW

4 / 9 mph 53 / 52°F 98% 1014 mb
Low level cloud: 90%
Mid level cloud: 65%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.03 In of precipitation over the past 3 hours.
0.03 In
12:00

W
W

3 / 7 mph 54 / 53°F 94% 1014 mb
Low level cloud: 90%
Mid level cloud: 26%
High level cloud: 0%
Most Significant Cloud Type: low
98%
Expect 0.03 In of precipitation over the past 3 hours.
0.03 In
15:00

W
W

6 / 13 mph 60 / 57°F 75% 1014 mb
Low level cloud: 59%
Mid level cloud: 4%
High level cloud: 10%
Most Significant Cloud Type: low
62%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

W
W

5 / 11 mph 59 / 56°F 72% 1014 mb
Low level cloud: 13%
Mid level cloud: 4%
High level cloud: 1%
Most Significant Cloud Type: low
14%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

WSW
WSW

2 / 3 mph 57 / 56°F 91% 1016 mb
Low level cloud: 3%
Mid level cloud: 3%
High level cloud: 88%
Most Significant Cloud Type: medium
14%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Wed 25
Jul
00:00

SSE
SSE

3 / 6 mph 54 / 54°F 94% 1016 mb
Low level cloud: 6%
Mid level cloud: 3%
High level cloud: 94%
Most Significant Cloud Type: medium
24%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

SSE
SSE

2 / 5 mph 53 / 54°F 95% 1016 mb
Low level cloud: 11%
Mid level cloud: 3%
High level cloud: 32%
Most Significant Cloud Type: low
15%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

SE
SE

2 / 4 mph 55 / 54°F 91% 1017 mb
Low level cloud: 8%
Mid level cloud: 10%
High level cloud: 47%
Most Significant Cloud Type: low
17%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

S
S

1 / 2 mph 59 / 57°F 72% 1017 mb
Low level cloud: 25%
Mid level cloud: 3%
High level cloud: 6%
Most Significant Cloud Type: low
26%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

WSW
WSW

1 / 1 mph 64 / 61°F 62% 1017 mb
Low level cloud: 25%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
25%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

WNW
WNW

1 / 3 mph 65 / 62°F 62% 1016 mb
Low level cloud: 35%
Mid level cloud: 1%
High level cloud: 7%
Most Significant Cloud Type: low
35%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

NW
NW

1 / 3 mph 64 / 61°F 69% 1016 mb
Low level cloud: 28%
Mid level cloud: 5%
High level cloud: 87%
Most Significant Cloud Type: low
40%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

S
S

1 / 2 mph 60 / 58°F 88% 1016 mb
Low level cloud: 7%
Mid level cloud: 15%
High level cloud: 78%
Most Significant Cloud Type: medium
37%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Thu 26
Jul
00:00

SSE
SSE

4 / 8 mph 57 / 57°F 88% 1016 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 94%
Most Significant Cloud Type: high
93%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

SSE
SSE

5 / 11 mph 56 / 55°F 91% 1015 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 32%
Most Significant Cloud Type: high
31%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

S
S

5 / 9 mph 59 / 57°F 88% 1015 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
09:00

SSW
SSW

8 / 16 mph 60 / 57°F 62% 1016 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
12:00

SSW
SSW

7 / 15 mph 65 / 63°F 55% 1016 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

SW
SW

5 / 11 mph 67 / 65°F 55% 1015 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 6%
Most Significant Cloud Type: high
5%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

W
W

2 / 3 mph 67 / 65°F 65% 1015 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 3%
Most Significant Cloud Type: high
2%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

ENE
ENE

5 / 10 mph 63 / 60°F 87% 1016 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 1%
Most Significant Cloud Type: medium
7%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Fri 27
Jul
00:00

E
E

5 / 10 mph 60 / 60°F 79% 1015 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: medium
43%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

ESE
ESE

5 / 9 mph 64 / 64°F 71% 1013 mb
Low level cloud: 48%
Mid level cloud: 48%
High level cloud: 0%
Most Significant Cloud Type: low
64%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

SE
SE

6 / 11 mph 64 / 64°F 80% 1013 mb
Low level cloud: 81%
Mid level cloud: 66%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

SSE
SSE

9 / 18 mph 66 / 65°F 78% 1012 mb
Low level cloud: 70%
Mid level cloud: 22%
High level cloud: 8%
Most Significant Cloud Type: low
79%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

SSW
SSW

9 / 19 mph 65 / 64°F 83% 1010 mb
Low level cloud: 86%
Mid level cloud: 26%
High level cloud: 33%
Most Significant Cloud Type: low
99%
Expect 0.07 In of precipitation over the past 3 hours.
0.07 In
15:00

SW
SW

9 / 18 mph 64 / 62°F 79% 1009 mb
Low level cloud: 36%
Mid level cloud: 5%
High level cloud: 12%
Most Significant Cloud Type: low
39%
Expect 0.03 In of precipitation over the past 3 hours.
0.03 In
18:00

SW
SW

13 / 26 mph 61 / 60°F 78% 1009 mb
Low level cloud: 57%
Mid level cloud: 18%
High level cloud: 38%
Most Significant Cloud Type: low
67%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

SW
SW

12 / 25 mph 54 / 49°F 89% 1012 mb
Low level cloud: 35%
Mid level cloud: 9%
High level cloud: 38%
Most Significant Cloud Type: low
42%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sat 28
Jul
00:00

ESE
ESE

7 / 15 mph 58 / 57°F 80% 1017 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 39%
Most Significant Cloud Type: medium
9%
0.00 In
06:00

ESE
ESE

3 / 4 mph 59 / 59°F 86% 1021 mb
Low level cloud: 0%
Mid level cloud: 27%
High level cloud: 86%
Most Significant Cloud Type: medium
30%
0.00 In
12:00

WSW
WSW

9 / 17 mph 56 / 54°F 56% 1021 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.00 In
18:00

SW
SW

17 / 31 mph 57 / 53°F 72% 1016 mb
Low level cloud: 3%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
5%
0.00 In
Sun 29
Jul
00:00

SSW
SSW

6 / 12 mph 53 / 51°F 92% 1023 mb
Low level cloud: 1%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
2%
0.00 In
06:00

SSW
SSW

6 / 13 mph 51 / 49°F 89% 1017 mb
Low level cloud: 7%
Mid level cloud: 5%
High level cloud: 93%
Most Significant Cloud Type: medium
28%
0.00 In
12:00

NW
NW

6 / 13 mph 59 / 59°F 58% 1020 mb
Low level cloud: 7%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
7%
0.00 In
18:00

ENE
ENE

3 / 6 mph 66 / 66°F 65% 1019 mb
Low level cloud: 15%
Mid level cloud: 27%
High level cloud: 0%
Most Significant Cloud Type: low
24%
0.02 In
Mon 30
Jul
00:00

E
E

4 / 7 mph 55 / 55°F 88% 1020 mb
Low level cloud: 6%
Mid level cloud: 1%
High level cloud: 5%
Most Significant Cloud Type: low
6%
0.00 In
06:00

SSE
SSE

4 / 6 mph 57 / 57°F 85% 1017 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 58%
Most Significant Cloud Type: medium
46%
0.00 In
12:00

S
S

6 / 13 mph 60 / 60°F 61% 1017 mb
Low level cloud: 14%
Mid level cloud: 5%
High level cloud: 32%
Most Significant Cloud Type: low
19%
0.00 In
18:00

S
S

6 / 13 mph 63 / 63°F 56% 1013 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 13%
Most Significant Cloud Type: medium
43%
0.00 In
Tue 31
Jul
00:00

ESE
ESE

4 / 7 mph 59 / 59°F 89% 1014 mb
Low level cloud: 67%
Mid level cloud: 63%
High level cloud: 33%
Most Significant Cloud Type: low
92%
0.03 In
06:00

SE
SE

4 / 6 mph 61 / 61°F 84% 1013 mb
Low level cloud: 16%
Mid level cloud: 83%
High level cloud: 94%
Most Significant Cloud Type: medium
100%
0.02 In
12:00

SE
SE

7 / 15 mph 53 / 51°F 95% 1011 mb
Low level cloud: 85%
Mid level cloud: 67%
High level cloud: 48%
Most Significant Cloud Type: low
100%
0.16 In
18:00

E
E

2 / 3 mph 67 / 67°F 84% 1011 mb
Low level cloud: 42%
Mid level cloud: 49%
High level cloud: 68%
Most Significant Cloud Type: low
67%
0.11 In
Wed 01
Aug
00:00

SE
SE

7 / 16 mph 56 / 54°F 96% 1007 mb
Low level cloud: 87%
Mid level cloud: 90%
High level cloud: 87%
Most Significant Cloud Type: low
100%
0.53 In
06:00

ESE
ESE

5 / 10 mph 61 / 61°F 87% 1012 mb
Low level cloud: 3%
Mid level cloud: 46%
High level cloud: 42%
Most Significant Cloud Type: medium
55%
0.02 In
12:00

SSW
SSW

13 / 28 mph 58 / 55°F 91% 1005 mb
Low level cloud: 75%
Mid level cloud: 23%
High level cloud: 33%
Most Significant Cloud Type: low
87%
0.65 In
18:00

W
W

3 / 5 mph 69 / 69°F 71% 1012 mb
Low level cloud: 15%
Mid level cloud: 33%
High level cloud: 49%
Most Significant Cloud Type: low
31%
0.09 In
Thu 02
Aug
00:00

WSW
WSW

11 / 22 mph 54 / 50°F 94% 1008 mb
Low level cloud: 76%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: low
82%
0.02 In
06:00

SSW
SSW

7 / 16 mph 53 / 51°F 95% 1016 mb
Low level cloud: 67%
Mid level cloud: 2%
High level cloud: 4%
Most Significant Cloud Type: low
68%
0.01 In
12:00

SW
SW

8 / 16 mph 53 / 51°F 85% 1016 mb
Low level cloud: 68%
Mid level cloud: 28%
High level cloud: 48%
Most Significant Cloud Type: low
83%
0.09 In
18:00

WNW
WNW

4 / 6 mph 65 / 65°F 68% 1017 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.00 In
Fri 03
Aug
00:00

S
S

7 / 13 mph 57 / 56°F 94% 1018 mb
Low level cloud: 17%
Mid level cloud: 44%
High level cloud: 7%
Most Significant Cloud Type: low
33%
0.00 In
06:00

SSE
SSE

6 / 11 mph 62 / 62°F 93% 1017 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 4%
Most Significant Cloud Type: medium
9%
0.00 In
12:00

SSW
SSW

9 / 19 mph 60 / 60°F 79% 1018 mb
Low level cloud: 39%
Mid level cloud: 22%
High level cloud: 2%
Most Significant Cloud Type: low
46%
0.03 In
18:00

NNW
NNW

5 / 10 mph 68 / 68°F 65% 1015 mb
Low level cloud: 0%
Mid level cloud: 31%
High level cloud: 0%
Most Significant Cloud Type: medium
30%
0.05 In
Sat 04
Aug
00:00

SSW
SSW

5 / 10 mph 57 / 57°F 93% 1016 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 2%
Most Significant Cloud Type: medium
5%
0.01 In
06:00

WNW
WNW

3 / 6 mph 62 / 62°F 95% 1018 mb
Low level cloud: 27%
Mid level cloud: 0%
High level cloud: 3%
Most Significant Cloud Type: low
27%
0.01 In
12:00

SSW
SSW

9 / 17 mph 61 / 61°F 60% 1013 mb
Low level cloud: 56%
Mid level cloud: 19%
High level cloud: 2%
Most Significant Cloud Type: low
62%
0.00 In
18:00

WNW
WNW

5 / 7 mph 67 / 67°F 67% 1020 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 7%
Most Significant Cloud Type: medium
3%
0.00 In
Sun 05
Aug
00:00

S
S

14 / 29 mph 53 / 49°F 85% 1007 mb
Low level cloud: 42%
Mid level cloud: 48%
High level cloud: 89%
Most Significant Cloud Type: low
69%
0.02 In
06:00

SSE
SSE

3 / 4 mph 63 / 63°F 91% 1021 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.00 In
12:00

SW
SW

23 / 47 mph 56 / 51°F 59% 1006 mb
Low level cloud: 28%
Mid level cloud: 31%
High level cloud: 0%
Most Significant Cloud Type: low
39%
0.39 In
18:00

NW
NW

4 / 7 mph 68 / 68°F 59% 1018 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
0.00 In

Other Locations Near to Porth-llwyd

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