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Efail-fach 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Efail-fach

Neath Port Talbot, United Kingdom

Long range weather outlook for Efail-fach includes 14 day forecast summary:

Reviewing the forecast for Efail-fach Over the next 14 days and the average daytime maximum temperature will be around 10°C, with a high for the two weeks of 14°C expected on the afternoon of Tuesday 31st. The average minimum temperature will be 6°C, dipping to its lowest on the morning of Wednesday 8th at 3°C. The next 14 days will have some days seeing a little precipitation and some days with rain. Predictions are Tuesday 7th will have the most precipitation with an accumulation of around 12.0mm. On the whole winds are likely to be moderate. The strongest wind will be felt on the afternoon of Monday 6th, coming from a southerly direction, and reaching around 26mph.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Mon 30
Mar		18:00

NW
NW

 11 / 13 mph 50 / 45°F 81% 1029 mb
Low level cloud: 54%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: low
58%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WNW
WNW

 6 / 8 mph 48 / 45°F 91% 1031 mb
Low level cloud: 46%
Mid level cloud: 30%
High level cloud: 2%
Most Significant Cloud Type: low
57%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 31
Mar		00:00

W
W

 4 / 7 mph 46 / 44°F 90% 1031 mb
Low level cloud: 44%
Mid level cloud: 54%
High level cloud: 9%
Most Significant Cloud Type: low
63%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

W
W

 5 / 8 mph 47 / 45°F 93% 1031 mb
Low level cloud: 96%
Mid level cloud: 86%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

WNW
WNW

 4 / 8 mph 48 / 46°F 97% 1031 mb
Low level cloud: 88%
Mid level cloud: 57%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WNW
WNW

 5 / 6 mph 52 / 50°F 91% 1032 mb
Low level cloud: 46%
Mid level cloud: 70%
High level cloud: 100%
Most Significant Cloud Type: low
82%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

W
W

 9 / 11 mph 56 / 53°F 85% 1031 mb
Low level cloud: 76%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: low
83%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WNW
WNW

 12 / 17 mph 56 / 53°F 79% 1030 mb
Low level cloud: 34%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
34%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WNW
WNW

 8 / 13 mph 53 / 49°F 89% 1030 mb
Low level cloud: 22%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
21%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WNW
WNW

 3 / 6 mph 47 / 46°F 93% 1030 mb
Low level cloud: 72%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: low
72%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 01
Apr		00:00

W
W

 2 / 4 mph 48 / 48°F 90% 1029 mb
Low level cloud: 72%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
72%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

WNW
WNW

 4 / 7 mph 47 / 46°F 82% 1028 mb
Low level cloud: 45%
Mid level cloud: 9%
High level cloud: 13%
Most Significant Cloud Type: low
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NW
NW

 5 / 11 mph 46 / 43°F 75% 1027 mb
Low level cloud: 62%
Mid level cloud: 45%
High level cloud: 19%
Most Significant Cloud Type: low
80%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WNW
WNW

 6 / 10 mph 49 / 46°F 72% 1027 mb
Low level cloud: 44%
Mid level cloud: 0%
High level cloud: 26%
Most Significant Cloud Type: low
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

W
W

 8 / 10 mph 52 / 48°F 73% 1025 mb
Low level cloud: 55%
Mid level cloud: 0%
High level cloud: 8%
Most Significant Cloud Type: low
55%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WSW
WSW

 10 / 12 mph 53 / 49°F 76% 1024 mb
Low level cloud: 50%
Mid level cloud: 42%
High level cloud: 0%
Most Significant Cloud Type: low
64%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WSW
WSW

 6 / 7 mph 52 / 50°F 89% 1022 mb
Low level cloud: 87%
Mid level cloud: 100%
High level cloud: 5%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SW
SW

 6 / 7 mph 50 / 47°F 91% 1022 mb
Low level cloud: 84%
Mid level cloud: 32%
High level cloud: 21%
Most Significant Cloud Type: low
98%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 02
Apr		00:00

WSW
WSW

 7 / 10 mph 48 / 45°F 97% 1020 mb
Low level cloud: 100%
Mid level cloud: 46%
High level cloud: 33%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NNW
NNW

 13 / 17 mph 44 / 38°F 88% 1020 mb
Low level cloud: 91%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
91%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NNW
NNW

 11 / 15 mph 41 / 35°F 78% 1021 mb
Low level cloud: 3%
Mid level cloud: 0%
High level cloud: 16%
Most Significant Cloud Type: low
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NNW
NNW

 13 / 14 mph 45 / 38°F 69% 1022 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 16%
Most Significant Cloud Type: high
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NW
NW

 10 / 12 mph 49 / 44°F 60% 1021 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 100%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WNW
WNW

 10 / 12 mph 49 / 45°F 60% 1020 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 34%
Most Significant Cloud Type: medium
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WSW
WSW

 9 / 11 mph 45 / 40°F 74% 1020 mb
Low level cloud: 0%
Mid level cloud: 52%
High level cloud: 52%
Most Significant Cloud Type: medium
53%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SW
SW

 7 / 11 mph 42 / 37°F 85% 1019 mb
Low level cloud: 13%
Mid level cloud: 93%
High level cloud: 32%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 03
Apr		00:00

SSW
SSW

 12 / 16 mph 45 / 40°F 86% 1017 mb
Low level cloud: 86%
Mid level cloud: 83%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSW
SSW

 15 / 21 mph 46 / 40°F 93% 1014 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 10%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SW
SW

 19 / 28 mph 48 / 41°F 96% 1012 mb
Low level cloud: 100%
Mid level cloud: 97%
High level cloud: 9%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
09:00

WSW
WSW

 17 / 25 mph 50 / 44°F 98% 1013 mb
Low level cloud: 100%
Mid level cloud: 85%
High level cloud: 33%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SW
SW

 14 / 19 mph 50 / 45°F 98% 1013 mb
Low level cloud: 97%
Mid level cloud: 75%
High level cloud: 22%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SW
SW

 16 / 23 mph 50 / 44°F 98% 1012 mb
Low level cloud: 100%
Mid level cloud: 94%
High level cloud: 24%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
18:00

SW
SW

 17 / 26 mph 50 / 44°F 98% 1012 mb
Low level cloud: 100%
Mid level cloud: 96%
High level cloud: 10%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

SW
SW

 17 / 26 mph 50 / 44°F 97% 1013 mb
Low level cloud: 95%
Mid level cloud: 94%
High level cloud: 14%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 04
Apr		00:00

SSW
SSW

 16 / 24 mph 50 / 45°F 93% 1013 mb
Low level cloud: 32%
Mid level cloud: 50%
High level cloud: 32%
Most Significant Cloud Type: low
53%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSW
SSW

 15 / 25 mph 48 / 42°F 87% 1011 mb
Low level cloud: 1%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: medium
23%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

S
S

 11 / 20 mph 46 / 40°F 86% 1011 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSW
SSW

 20 / 25 mph 52 / 46°F 83% 1009 mb
Low level cloud: 4%
Mid level cloud: 0%
High level cloud: 5%
Most Significant Cloud Type: low
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSW
SSW

 25 / 30 mph 56 / 51°F 73% 1007 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 63%
Most Significant Cloud Type: high
63%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSW
SSW

 24 / 30 mph 55 / 49°F 78% 1006 mb
Low level cloud: 34%
Mid level cloud: 4%
High level cloud: 51%
Most Significant Cloud Type: low
42%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSW
SSW

 24 / 34 mph 51 / 44°F 91% 1006 mb
Low level cloud: 100%
Mid level cloud: 85%
High level cloud: 31%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SW
SW

 21 / 28 mph 46 / 38°F 88% 1009 mb
Low level cloud: 58%
Mid level cloud: 57%
High level cloud: 32%
Most Significant Cloud Type: low
81%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 05
Apr		00:00

W
W

 15 / 22 mph 42 / 35°F 82% 1011 mb
Low level cloud: 18%
Mid level cloud: 47%
High level cloud: 25%
Most Significant Cloud Type: low
37%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

WSW
WSW

 10 / 16 mph 42 / 36°F 82% 1013 mb
Low level cloud: 50%
Mid level cloud: 71%
High level cloud: 100%
Most Significant Cloud Type: low
86%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

WSW
WSW

 10 / 15 mph 42 / 37°F 85% 1014 mb
Low level cloud: 39%
Mid level cloud: 46%
High level cloud: 32%
Most Significant Cloud Type: low
58%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WSW
WSW

 14 / 17 mph 46 / 39°F 77% 1017 mb
Low level cloud: 48%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: low
75%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WSW
WSW

 13 / 15 mph 48 / 42°F 62% 1018 mb
Low level cloud: 30%
Mid level cloud: 23%
High level cloud: 12%
Most Significant Cloud Type: low
39%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WSW
WSW

 9 / 10 mph 48 / 44°F 56% 1018 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 100%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSW
SSW

 3 / 4 mph 47 / 45°F 63% 1018 mb
Low level cloud: 0%
Mid level cloud: 64%
High level cloud: 100%
Most Significant Cloud Type: medium
67%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ESE
ESE

 7 / 11 mph 42 / 38°F 68% 1017 mb
Low level cloud: 19%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: low
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Mon 06
Apr		00:00

ESE
ESE

 16 / 26 mph 40 / 32°F 88% 1009 mb
Low level cloud: 100%
Mid level cloud: 89%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
06:00

W
W

 18 / 38 mph 38 / 28°F 84% 1004 mb
Low level cloud: 64%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: low
70%
0.0 In
12:00

E
E

 14 / 30 mph 48 / 42°F 80% 1009 mb
Low level cloud: 2%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
18:00

SSE
SSE

 10 / 20 mph 50 / 46°F 87% 1020 mb
Low level cloud: 63%
Mid level cloud: 54%
High level cloud: 14%
Most Significant Cloud Type: low
83%
0.0 In
Tue 07
Apr		00:00

SSW
SSW

 13 / 28 mph 45 / 38°F 92% 993 mb
Low level cloud: 94%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
06:00

SW
SW

 23 / 48 mph 41 / 31°F 79% 1004 mb
Low level cloud: 10%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: low
15%
0.0 In
12:00

WSW
WSW

 32 / 68 mph 45 / 35°F 85% 999 mb
Low level cloud: 86%
Mid level cloud: 100%
High level cloud: 32%
Most Significant Cloud Type: low
100%
0.0 In
18:00

WSW
WSW

 18 / 38 mph 46 / 39°F 78% 1004 mb
Low level cloud: 20%
Mid level cloud: 15%
High level cloud: 3%
Most Significant Cloud Type: low
25%
0.0 In
Wed 08
Apr		00:00

SSW
SSW

 6 / 12 mph 41 / 37°F 86% 1001 mb
Low level cloud: 44%
Mid level cloud: 98%
High level cloud: 34%
Most Significant Cloud Type: low
82%
0.0 In
06:00

SSW
SSW

 9 / 19 mph 36 / 28°F 89% 1004 mb
Low level cloud: 13%
Mid level cloud: 31%
High level cloud: 0%
Most Significant Cloud Type: low
23%
0.1 In
12:00

NW
NW

 15 / 31 mph 46 / 40°F 81% 1000 mb
Low level cloud: 70%
Mid level cloud: 24%
High level cloud: 10%
Most Significant Cloud Type: low
80%
0.0 In
18:00

SW
SW

 21 / 44 mph 50 / 44°F 88% 985 mb
Low level cloud: 90%
Mid level cloud: 58%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.3 In
Thu 09
Apr		00:00

NNW
NNW

 18 / 38 mph 39 / 29°F 85% 1008 mb
Low level cloud: 18%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
34%
0.1 In
06:00

WNW
WNW

 16 / 34 mph 39 / 30°F 92% 981 mb
Low level cloud: 92%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.2 In
12:00

WNW
WNW

 14 / 30 mph 45 / 38°F 61% 1017 mb
Low level cloud: 58%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: low
72%
0.0 In
18:00

WNW
WNW

 27 / 56 mph 42 / 32°F 82% 994 mb
Low level cloud: 27%
Mid level cloud: 14%
High level cloud: 33%
Most Significant Cloud Type: low
35%
0.3 In
Fri 10
Apr		00:00

SSW
SSW

 13 / 27 mph 42 / 35°F 82% 1019 mb
Low level cloud: 81%
Mid level cloud: 44%
High level cloud: 40%
Most Significant Cloud Type: low
100%
0.0 In
06:00

NW
NW

 28 / 58 mph 45 / 36°F 86% 1006 mb
Low level cloud: 100%
Mid level cloud: 46%
High level cloud: 7%
Most Significant Cloud Type: low
100%
0.0 In
12:00

SW
SW

 18 / 38 mph 49 / 43°F 98% 1016 mb
Low level cloud: 100%
Mid level cloud: 97%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.2 In
18:00

NNW
NNW

 20 / 42 mph 43 / 34°F 77% 1018 mb
Low level cloud: 13%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
18%
0.0 In
Sat 11
Apr		00:00

SW
SW

 19 / 41 mph 48 / 41°F 96% 1019 mb
Low level cloud: 99%
Mid level cloud: 17%
High level cloud: 56%
Most Significant Cloud Type: low
100%
0.0 In
06:00

NNW
NNW

 5 / 11 mph 43 / 39°F 90% 1025 mb
Low level cloud: 2%
Mid level cloud: 8%
High level cloud: 33%
Most Significant Cloud Type: medium
15%
0.0 In
12:00

NW
NW

 10 / 20 mph 49 / 45°F 67% 1028 mb
Low level cloud: 22%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
23%
0.0 In
18:00

WSW
WSW

 4 / 9 mph 50 / 48°F 91% 1030 mb
Low level cloud: 85%
Mid level cloud: 74%
High level cloud: 9%
Most Significant Cloud Type: low
100%
0.0 In
Sun 12
Apr		00:00

ENE
ENE

 6 / 13 mph 44 / 40°F 74% 1034 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 100%
Most Significant Cloud Type: medium
7%
0.0 In
06:00

WSW
WSW

 4 / 9 mph 49 / 47°F 99% 1031 mb
Low level cloud: 97%
Mid level cloud: 81%
High level cloud: 34%
Most Significant Cloud Type: low
100%
0.0 In
12:00

ESE
ESE

 16 / 33 mph 53 / 48°F 71% 1033 mb
Low level cloud: 11%
Mid level cloud: 15%
High level cloud: 100%
Most Significant Cloud Type: medium
48%
0.0 In
18:00

WNW
WNW

 6 / 12 mph 55 / 54°F 92% 1032 mb
Low level cloud: 42%
Mid level cloud: 44%
High level cloud: 18%
Most Significant Cloud Type: low
60%
0.0 In
Mon 13
Apr		00:00

E
E

 15 / 32 mph 46 / 40°F 76% 1029 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 16%
Most Significant Cloud Type: high
16%
0.0 In
06:00

NNE
NNE

 4 / 8 mph 47 / 45°F 92% 1031 mb
Low level cloud: 12%
Mid level cloud: 4%
High level cloud: 80%
Most Significant Cloud Type: low
22%
0.0 In
12:00

ESE
ESE

 23 / 49 mph 58 / 53°F 72% 1024 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
0.0 In
18:00

W
W

 6 / 12 mph 55 / 54°F 80% 1028 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 22%
Most Significant Cloud Type: medium
6%
0.0 In
Tue 14
Apr		00:00

E
E

 19 / 40 mph 48 / 41°F 68% 1022 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 100%
Most Significant Cloud Type: medium
48%
0.0 In
06:00

WNW
WNW

 2 / 4 mph 46 / 46°F 85% 1025 mb
Low level cloud: 25%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
28%
0.0 In
12:00

ESE
ESE

 26 / 55 mph 58 / 53°F 71% 1018 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 76%
Most Significant Cloud Type: medium
17%
0.0 In
18:00

NW
NW

 8 / 16 mph 54 / 51°F 85% 1024 mb
Low level cloud: 21%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
22%
0.0 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

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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