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Garn-swllt 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Garn-swllt

Carmarthenshire, United Kingdom

Long range weather outlook for Garn-swllt includes 14 day forecast summary:

Over the next 14 days the Garn-swllt forecast suggests the average daytime maximum temperature will be around 15°C, with a high for the two weeks of 19°C expected on the afternoon of Sunday 2nd. The average minimum temperature will be 10°C, dipping to its lowest on the morning of Saturday 25th at 8°C. The coming 14 days will have some days seeing a little precipitation and some days with rain. Predictions are Wednesday 29th will have the most precipitation with an accumulation of around 10.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Fri 24
May		15:00

WSW
WSW

 9 / 11 mph 56 / 52°F 73% 1019 mb
Low level cloud: 5%
Mid level cloud: 21%
High level cloud: 5%
Most Significant Cloud Type: medium
35%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

W
W

 6 / 7 mph 57 / 53°F 74% 1019 mb
Low level cloud: 5%
Mid level cloud: 20%
High level cloud: 3%
Most Significant Cloud Type: medium
33%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WSW
WSW

 3 / 4 mph 52 / 51°F 81% 1019 mb
Low level cloud: 0%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: medium
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 25
May		00:00

E
E

 4 / 6 mph 49 / 48°F 83% 1019 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

E
E

 5 / 10 mph 46 / 44°F 84% 1018 mb
Low level cloud: 12%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

E
E

 7 / 11 mph 50 / 46°F 82% 1017 mb
Low level cloud: 47%
Mid level cloud: 2%
High level cloud: 1%
Most Significant Cloud Type: low
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SE
SE

 12 / 14 mph 56 / 52°F 76% 1017 mb
Low level cloud: 7%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: low
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SE
SE

 11 / 13 mph 59 / 56°F 70% 1016 mb
Low level cloud: 33%
Mid level cloud: 0%
High level cloud: 35%
Most Significant Cloud Type: low
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSE
SSE

 12 / 16 mph 60 / 56°F 70% 1014 mb
Low level cloud: 23%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: low
51%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

S
S

 11 / 15 mph 54 / 50°F 91% 1013 mb
Low level cloud: 85%
Mid level cloud: 89%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

ESE
ESE

 9 / 12 mph 51 / 48°F 95% 1012 mb
Low level cloud: 85%
Mid level cloud: 100%
High level cloud: 76%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Sun 26
May		00:00

E
E

 9 / 11 mph 53 / 50°F 93% 1010 mb
Low level cloud: 68%
Mid level cloud: 70%
High level cloud: 5%
Most Significant Cloud Type: low
93%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SE
SE

 11 / 17 mph 51 / 47°F 93% 1010 mb
Low level cloud: 94%
Mid level cloud: 54%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SSE
SSE

 9 / 15 mph 51 / 47°F 95% 1010 mb
Low level cloud: 84%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: low
91%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

S
S

 11 / 18 mph 54 / 50°F 89% 1010 mb
Low level cloud: 35%
Mid level cloud: 24%
High level cloud: 1%
Most Significant Cloud Type: low
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SW
SW

 13 / 19 mph 57 / 53°F 85% 1010 mb
Low level cloud: 18%
Mid level cloud: 14%
High level cloud: 8%
Most Significant Cloud Type: low
23%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
15:00

WSW
WSW

 17 / 21 mph 59 / 55°F 84% 1011 mb
Low level cloud: 21%
Mid level cloud: 19%
High level cloud: 98%
Most Significant Cloud Type: low
39%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WSW
WSW

 16 / 20 mph 58 / 53°F 88% 1012 mb
Low level cloud: 45%
Mid level cloud: 18%
High level cloud: 18%
Most Significant Cloud Type: low
53%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WSW
WSW

 14 / 18 mph 55 / 50°F 89% 1012 mb
Low level cloud: 47%
Mid level cloud: 12%
High level cloud: 8%
Most Significant Cloud Type: low
51%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 27
May		00:00

W
W

 13 / 20 mph 50 / 46°F 90% 1013 mb
Low level cloud: 50%
Mid level cloud: 45%
High level cloud: 62%
Most Significant Cloud Type: low
73%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

W
W

 10 / 16 mph 49 / 45°F 88% 1014 mb
Low level cloud: 23%
Mid level cloud: 24%
High level cloud: 12%
Most Significant Cloud Type: low
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

W
W

 9 / 15 mph 48 / 44°F 81% 1014 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 32%
Most Significant Cloud Type: medium
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

W
W

 11 / 17 mph 52 / 47°F 67% 1015 mb
Low level cloud: 3%
Mid level cloud: 25%
High level cloud: 32%
Most Significant Cloud Type: medium
33%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WSW
WSW

 11 / 14 mph 55 / 51°F 66% 1015 mb
Low level cloud: 0%
Mid level cloud: 98%
High level cloud: 32%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WSW
WSW

 11 / 13 mph 57 / 53°F 67% 1015 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 2%
Most Significant Cloud Type: medium
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WSW
WSW

 9 / 11 mph 56 / 52°F 74% 1016 mb
Low level cloud: 14%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: low
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WSW
WSW

 3 / 4 mph 55 / 54°F 84% 1016 mb
Low level cloud: 8%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 28
May		00:00

SSE
SSE

 1 / 2 mph 51 / 51°F 86% 1016 mb
Low level cloud: 3%
Mid level cloud: 4%
High level cloud: 20%
Most Significant Cloud Type: low
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSE
SSE

 2 / 4 mph 48 / 48°F 86% 1016 mb
Low level cloud: 6%
Mid level cloud: 100%
High level cloud: 6%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SE
SE

 5 / 6 mph 52 / 49°F 88% 1016 mb
Low level cloud: 26%
Mid level cloud: 10%
High level cloud: 3%
Most Significant Cloud Type: low
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSE
SSE

 9 / 11 mph 55 / 53°F 79% 1016 mb
Low level cloud: 66%
Mid level cloud: 76%
High level cloud: 88%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SE
SE

 9 / 13 mph 53 / 50°F 93% 1016 mb
Low level cloud: 100%
Mid level cloud: 96%
High level cloud: 9%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
15:00

SSW
SSW

 3 / 4 mph 54 / 54°F 97% 1016 mb
Low level cloud: 100%
Mid level cloud: 45%
High level cloud: 4%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSW
SSW

 6 / 8 mph 56 / 54°F 98% 1016 mb
Low level cloud: 100%
Mid level cloud: 92%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSW
SSW

 7 / 11 mph 56 / 54°F 98% 1017 mb
Low level cloud: 100%
Mid level cloud: 54%
High level cloud: 95%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 29
May		00:00

SSW
SSW

 6 / 10 mph 56 / 55°F 99% 1016 mb
Low level cloud: 100%
Mid level cloud: 62%
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

 6 / 11 mph 56 / 54°F 99% 1015 mb
Low level cloud: 100%
Mid level cloud: 90%
High level cloud: 96%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SW
SW

 8 / 13 mph 55 / 53°F 99% 1015 mb
Low level cloud: 100%
Mid level cloud: 94%
High level cloud: 20%
Most Significant Cloud Type: low
100%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
09:00

SW
SW

 11 / 18 mph 56 / 53°F 98% 1015 mb
Low level cloud: 100%
Mid level cloud: 57%
High level cloud: 96%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SW
SW

 13 / 20 mph 57 / 54°F 98% 1015 mb
Low level cloud: 100%
Mid level cloud: 71%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SW
SW

 11 / 15 mph 58 / 56°F 98% 1015 mb
Low level cloud: 99%
Mid level cloud: 80%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSW
SSW

 11 / 17 mph 57 / 55°F 98% 1014 mb
Low level cloud: 99%
Mid level cloud: 91%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SW
SW

 16 / 24 mph 56 / 53°F 98% 1013 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 73%
Most Significant Cloud Type: low
100%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
Thu 30
May		00:00

WSW
WSW

 16 / 27 mph 55 / 51°F 98% 1011 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
03:00

W
W

 13 / 21 mph 54 / 50°F 95% 1011 mb
Low level cloud: 85%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
85%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

WNW
WNW

 11 / 19 mph 53 / 49°F 83% 1012 mb
Low level cloud: 82%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
85%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WNW
WNW

 15 / 20 mph 56 / 52°F 84% 1014 mb
Low level cloud: 8%
Mid level cloud: 49%
High level cloud: 0%
Most Significant Cloud Type: medium
70%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WNW
WNW

 15 / 19 mph 60 / 56°F 77% 1015 mb
Low level cloud: 49%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: low
55%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WNW
WNW

 14 / 18 mph 62 / 60°F 74% 1016 mb
Low level cloud: 22%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: low
28%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

W
W

 11 / 16 mph 60 / 56°F 85% 1016 mb
Low level cloud: 23%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: low
33%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NW
NW

 6 / 10 mph 59 / 56°F 89% 1018 mb
Low level cloud: 21%
Mid level cloud: 38%
High level cloud: 0%
Most Significant Cloud Type: low
33%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Fri 31
May		00:00

SE
SE

 15 / 32 mph 56 / 53°F 94% 1005 mb
Low level cloud: 81%
Mid level cloud: 96%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
06:00

ESE
ESE

 2 / 4 mph 53 / 54°F 89% 1003 mb
Low level cloud: 81%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: low
91%
0.0 In
12:00

W
W

 11 / 22 mph 58 / 56°F 85% 1010 mb
Low level cloud: 69%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: low
77%
0.0 In
18:00

N
N

 17 / 36 mph 61 / 61°F 84% 1017 mb
Low level cloud: 2%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: medium
23%
0.0 In
Sat 01
Jun		00:00

NW
NW

 13 / 27 mph 48 / 42°F 80% 1014 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 33%
Most Significant Cloud Type: medium
18%
0.0 In
06:00

N
N

 10 / 21 mph 51 / 48°F 90% 1019 mb
Low level cloud: 26%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
27%
0.0 In
12:00

WNW
WNW

 9 / 18 mph 58 / 56°F 74% 1025 mb
Low level cloud: 79%
Mid level cloud: 27%
High level cloud: 5%
Most Significant Cloud Type: low
88%
0.0 In
18:00

NNW
NNW

 8 / 17 mph 59 / 60°F 74% 1024 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 96%
Most Significant Cloud Type: medium
14%
0.0 In
Sun 02
Jun		00:00

WNW
WNW

 3 / 6 mph 55 / 55°F 93% 1025 mb
Low level cloud: 78%
Mid level cloud: 44%
High level cloud: 49%
Most Significant Cloud Type: low
99%
0.0 In
06:00

NNW
NNW

 4 / 8 mph 56 / 56°F 79% 1024 mb
Low level cloud: 5%
Mid level cloud: 46%
High level cloud: 32%
Most Significant Cloud Type: medium
60%
0.0 In
12:00

WNW
WNW

 7 / 15 mph 59 / 59°F 89% 1025 mb
Low level cloud: 83%
Mid level cloud: 48%
High level cloud: 0%
Most Significant Cloud Type: low
99%
0.0 In
18:00

NNW
NNW

 11 / 23 mph 59 / 57°F 81% 1025 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 35%
Most Significant Cloud Type: medium
17%
0.0 In
Mon 03
Jun		00:00

WNW
WNW

 11 / 21 mph 56 / 54°F 96% 1022 mb
Low level cloud: 57%
Mid level cloud: 21%
High level cloud: 6%
Most Significant Cloud Type: low
64%
0.0 In
06:00

NNW
NNW

 11 / 22 mph 54 / 51°F 89% 1026 mb
Low level cloud: 24%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
23%
0.0 In
12:00

NNW
NNW

 19 / 39 mph 58 / 54°F 63% 1023 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
0.0 In
18:00

NNW
NNW

 13 / 27 mph 60 / 60°F 83% 1025 mb
Low level cloud: 39%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
38%
0.0 In
Tue 04
Jun		00:00

NW
NW

 7 / 14 mph 49 / 46°F 85% 1021 mb
Low level cloud: 8%
Mid level cloud: 4%
High level cloud: 33%
Most Significant Cloud Type: low
13%
0.0 In
06:00

NW
NW

 7 / 13 mph 51 / 49°F 93% 1021 mb
Low level cloud: 58%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
59%
0.0 In
12:00

NNW
NNW

 15 / 30 mph 57 / 54°F 64% 1018 mb
Low level cloud: 3%
Mid level cloud: 6%
High level cloud: 7%
Most Significant Cloud Type: low
6%
0.0 In
18:00

N
N

 11 / 23 mph 57 / 55°F 74% 1021 mb
Low level cloud: 4%
Mid level cloud: 0%
High level cloud: 3%
Most Significant Cloud Type: low
4%
0.0 In
Wed 05
Jun		00:00

N
N

 3 / 6 mph 54 / 55°F 75% 1013 mb
Low level cloud: 96%
Mid level cloud: 76%
High level cloud: 4%
Most Significant Cloud Type: low
100%
0.0 In
06:00

NW
NW

 6 / 13 mph 53 / 51°F 89% 1019 mb
Low level cloud: 19%
Mid level cloud: 4%
High level cloud: 7%
Most Significant Cloud Type: low
20%
0.0 In
12:00

NNW
NNW

 16 / 32 mph 55 / 51°F 62% 1010 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
18:00

NNW
NNW

 8 / 17 mph 59 / 59°F 75% 1020 mb
Low level cloud: 10%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
11%
0.0 In
Thu 06
Jun		00:00

WNW
WNW

 12 / 24 mph 50 / 46°F 85% 1005 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
0.0 In
06:00

NNE
NNE

 4 / 8 mph 54 / 53°F 77% 1021 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
7%
0.0 In
12:00

W
W

 23 / 46 mph 55 / 50°F 93% 998 mb
Low level cloud: 99%
Mid level cloud: 91%
High level cloud: 12%
Most Significant Cloud Type: low
100%
0.1 In
18:00

W
W

 9 / 19 mph 61 / 61°F 77% 1019 mb
Low level cloud: 21%
Mid level cloud: 25%
High level cloud: 0%
Most Significant Cloud Type: low
30%
0.0 In
Fri 07
Jun		00:00

NW
NW

 9 / 18 mph 48 / 43°F 87% 1003 mb
Low level cloud: 6%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
10%
0.2 In
06:00

N
N

 12 / 24 mph 52 / 48°F 88% 1017 mb
Low level cloud: 18%
Mid level cloud: 20%
High level cloud: 20%
Most Significant Cloud Type: low
27%
0.0 In
12:00

NNW
NNW

 15 / 31 mph 57 / 54°F 65% 1008 mb
Low level cloud: 50%
Mid level cloud: 9%
High level cloud: 13%
Most Significant Cloud Type: low
54%
0.0 In
18:00

SSW
SSW

 3 / 6 mph 60 / 60°F 74% 1017 mb
Low level cloud: 54%
Mid level cloud: 56%
High level cloud: 98%
Most Significant Cloud Type: low
85%
0.0 In
Sat 08
Jun		00:00

NW
NW

 11 / 22 mph 53 / 50°F 80% 1011 mb
Low level cloud: 53%
Mid level cloud: 99%
High level cloud: 33%
Most Significant Cloud Type: low
91%
0.0 In
06:00

ESE
ESE

 7 / 14 mph 50 / 48°F 95% 1015 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.3 In
12:00

NW
NW

 11 / 23 mph 60 / 60°F 68% 1013 mb
Low level cloud: 7%
Mid level cloud: 3%
High level cloud: 13%
Most Significant Cloud Type: low
9%
0.0 In
18:00

E
E

 9 / 18 mph 54 / 52°F 92% 1015 mb
Low level cloud: 78%
Mid level cloud: 98%
High level cloud: 73%
Most Significant Cloud Type: low
100%
0.3 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