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Talgarreg 14 Day Long Range Forecast

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

Ceredigion, United Kingdom

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

Reviewing the forecast for Talgarreg Over the next 14 days and the average daytime maximum temperature will be around 17°C, with a high for the two weeks of 22°C expected on the afternoon of Monday 20th. The average minimum temperature will be 10°C, dipping to its lowest on the morning of Monday 20th at 9°C. Expect the next 14 days have some days seeing a little precipitation and some days with rain. Current predictions suggest Saturday 25th will have the most precipitation with an accumulation of around 6.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sun 19
May
15:00

NNW
NNW

6 / 8 mph 68 / 65°F 76% 1016 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
18:00

N
N

2 / 2 mph 67 / 65°F 80% 1015 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
21:00

E
E

6 / 12 mph 57 / 54°F 82% 1016 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
Mon 20
May
00:00

ESE
ESE

7 / 16 mph 50 / 47°F 85% 1016 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
03:00

ESE
ESE

7 / 14 mph 47 / 44°F 80% 1016 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ESE
ESE

6 / 12 mph 51 / 48°F 75% 1016 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 7%
Most Significant Cloud Type: medium
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

E
E

7 / 9 mph 67 / 64°F 64% 1015 mb
Low level cloud: 0%
Mid level cloud: 31%
High level cloud: 21%
Most Significant Cloud Type: medium
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NNE
NNE

6 / 7 mph 72 / 69°F 67% 1014 mb
Low level cloud: 20%
Mid level cloud: 46%
High level cloud: 26%
Most Significant Cloud Type: low
39%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

N
N

9 / 11 mph 63 / 63°F 78% 1014 mb
Low level cloud: 91%
Mid level cloud: 45%
High level cloud: 28%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NNE
NNE

4 / 4 mph 65 / 63°F 84% 1013 mb
Low level cloud: 58%
Mid level cloud: 72%
High level cloud: 0%
Most Significant Cloud Type: low
82%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SE
SE

8 / 16 mph 53 / 49°F 86% 1013 mb
Low level cloud: 10%
Mid level cloud: 45%
High level cloud: 1%
Most Significant Cloud Type: medium
73%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 21
May
00:00

ESE
ESE

4 / 8 mph 52 / 51°F 84% 1012 mb
Low level cloud: 77%
Mid level cloud: 64%
High level cloud: 61%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ENE
ENE

3 / 5 mph 53 / 54°F 86% 1011 mb
Low level cloud: 33%
Mid level cloud: 100%
High level cloud: 8%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ESE
ESE

3 / 4 mph 56 / 55°F 87% 1010 mb
Low level cloud: 32%
Mid level cloud: 23%
High level cloud: 4%
Most Significant Cloud Type: low
41%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ENE
ENE

2 / 3 mph 67 / 64°F 74% 1010 mb
Low level cloud: 12%
Mid level cloud: 26%
High level cloud: 79%
Most Significant Cloud Type: low
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NNW
NNW

4 / 4 mph 67 / 64°F 70% 1010 mb
Low level cloud: 32%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: low
59%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NW
NW

7 / 9 mph 66 / 63°F 77% 1009 mb
Low level cloud: 39%
Mid level cloud: 63%
High level cloud: 16%
Most Significant Cloud Type: low
62%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WNW
WNW

4 / 5 mph 63 / 61°F 84% 1009 mb
Low level cloud: 54%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: low
82%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SW
SW

6 / 12 mph 53 / 49°F 91% 1010 mb
Low level cloud: 44%
Mid level cloud: 51%
High level cloud: 100%
Most Significant Cloud Type: low
73%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 22
May
00:00

SSW
SSW

7 / 11 mph 52 / 50°F 86% 1009 mb
Low level cloud: 85%
Mid level cloud: 86%
High level cloud: 9%
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 / 12 mph 50 / 47°F 88% 1009 mb
Low level cloud: 98%
Mid level cloud: 74%
High level cloud: 11%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SSW
SSW

7 / 15 mph 49 / 45°F 95% 1009 mb
Low level cloud: 100%
Mid level cloud: 44%
High level cloud: 4%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
09:00

WNW
WNW

13 / 20 mph 54 / 49°F 87% 1010 mb
Low level cloud: 63%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: low
73%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WNW
WNW

11 / 12 mph 58 / 55°F 89% 1011 mb
Low level cloud: 84%
Mid level cloud: 27%
High level cloud: 0%
Most Significant Cloud Type: low
93%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

W
W

10 / 11 mph 61 / 59°F 85% 1012 mb
Low level cloud: 36%
Mid level cloud: 9%
High level cloud: 3%
Most Significant Cloud Type: low
39%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

W
W

9 / 11 mph 58 / 55°F 83% 1013 mb
Low level cloud: 15%
Mid level cloud: 6%
High level cloud: 13%
Most Significant Cloud Type: low
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SW
SW

5 / 7 mph 56 / 54°F 87% 1014 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 23
May
00:00

SSE
SSE

5 / 8 mph 51 / 50°F 85% 1015 mb
Low level cloud: 5%
Mid level cloud: 8%
High level cloud: 6%
Most Significant Cloud Type: low
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSE
SSE

5 / 9 mph 49 / 48°F 83% 1016 mb
Low level cloud: 71%
Mid level cloud: 21%
High level cloud: 32%
Most Significant Cloud Type: low
82%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

N
N

7 / 14 mph 48 / 45°F 88% 1017 mb
Low level cloud: 91%
Mid level cloud: 27%
High level cloud: 20%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

N
N

18 / 26 mph 51 / 45°F 86% 1019 mb
Low level cloud: 70%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
85%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

N
N

16 / 19 mph 55 / 49°F 84% 1020 mb
Low level cloud: 55%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
58%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NNW
NNW

12 / 13 mph 56 / 52°F 82% 1020 mb
Low level cloud: 30%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: low
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NNW
NNW

11 / 15 mph 55 / 50°F 85% 1020 mb
Low level cloud: 28%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NNW
NNW

1 / 2 mph 52 / 52°F 89% 1021 mb
Low level cloud: 92%
Mid level cloud: 64%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 24
May
00:00

E
E

4 / 6 mph 53 / 53°F 88% 1021 mb
Low level cloud: 11%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: medium
73%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SE
SE

8 / 17 mph 49 / 46°F 89% 1021 mb
Low level cloud: 47%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: low
57%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SE
SE

8 / 14 mph 53 / 49°F 88% 1020 mb
Low level cloud: 23%
Mid level cloud: 10%
High level cloud: 14%
Most Significant Cloud Type: low
27%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSE
SSE

13 / 14 mph 62 / 60°F 80% 1020 mb
Low level cloud: 59%
Mid level cloud: 4%
High level cloud: 22%
Most Significant Cloud Type: low
63%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

S
S

15 / 17 mph 64 / 63°F 68% 1020 mb
Low level cloud: 16%
Mid level cloud: 4%
High level cloud: 79%
Most Significant Cloud Type: low
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

S
S

14 / 16 mph 65 / 64°F 69% 1020 mb
Low level cloud: 52%
Mid level cloud: 3%
High level cloud: 100%
Most Significant Cloud Type: low
64%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

S
S

11 / 13 mph 62 / 60°F 79% 1020 mb
Low level cloud: 4%
Mid level cloud: 25%
High level cloud: 32%
Most Significant Cloud Type: medium
37%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSE
SSE

8 / 16 mph 54 / 50°F 89% 1020 mb
Low level cloud: 25%
Mid level cloud: 44%
High level cloud: 47%
Most Significant Cloud Type: low
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 25
May
00:00

SSE
SSE

12 / 14 mph 56 / 53°F 90% 1020 mb
Low level cloud: 10%
Mid level cloud: 40%
High level cloud: 37%
Most Significant Cloud Type: medium
69%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSE
SSE

13 / 19 mph 53 / 49°F 87% 1018 mb
Low level cloud: 7%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: medium
67%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SE
SE

16 / 30 mph 52 / 45°F 84% 1017 mb
Low level cloud: 9%
Mid level cloud: 47%
High level cloud: 100%
Most Significant Cloud Type: medium
74%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSE
SSE

17 / 26 mph 57 / 53°F 85% 1015 mb
Low level cloud: 70%
Mid level cloud: 49%
High level cloud: 57%
Most Significant Cloud Type: low
93%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSE
SSE

17 / 20 mph 64 / 63°F 87% 1014 mb
Low level cloud: 34%
Mid level cloud: 83%
High level cloud: 100%
Most Significant Cloud Type: low
75%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

S
S

19 / 23 mph 66 / 66°F 82% 1012 mb
Low level cloud: 0%
Mid level cloud: 83%
High level cloud: 6%
Most Significant Cloud Type: medium
83%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSE
SSE

19 / 22 mph 63 / 63°F 88% 1011 mb
Low level cloud: 86%
Mid level cloud: 94%
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

SSE
SSE

19 / 22 mph 58 / 55°F 92% 1010 mb
Low level cloud: 80%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sun 26
May
00:00

SE
SE

16 / 32 mph 56 / 53°F 80% 1012 mb
Low level cloud: 71%
Mid level cloud: 100%
High level cloud: 69%
Most Significant Cloud Type: low
100%
0.0 In
06:00

SSE
SSE

18 / 34 mph 53 / 48°F 82% 1016 mb
Low level cloud: 82%
Mid level cloud: 78%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
12:00

W
W

9 / 18 mph 55 / 53°F 81% 1007 mb
Low level cloud: 22%
Mid level cloud: 43%
High level cloud: 100%
Most Significant Cloud Type: low
49%
0.0 In
18:00

ESE
ESE

13 / 22 mph 59 / 56°F 92% 1011 mb
Low level cloud: 20%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
Mon 27
May
00:00

SSE
SSE

10 / 20 mph 50 / 47°F 93% 1015 mb
Low level cloud: 35%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: low
45%
0.0 In
06:00

ENE
ENE

10 / 18 mph 57 / 55°F 87% 1019 mb
Low level cloud: 41%
Mid level cloud: 11%
High level cloud: 1%
Most Significant Cloud Type: low
44%
0.0 In
12:00

N
N

7 / 13 mph 60 / 60°F 80% 1019 mb
Low level cloud: 83%
Mid level cloud: 49%
High level cloud: 10%
Most Significant Cloud Type: low
100%
0.0 In
18:00

NW
NW

10 / 21 mph 56 / 53°F 82% 1019 mb
Low level cloud: 59%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
61%
0.0 In
Tue 28
May
00:00

NE
NE

5 / 11 mph 53 / 51°F 87% 1021 mb
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 32%
Most Significant Cloud Type: medium
16%
0.0 In
06:00

NE
NE

2 / 3 mph 52 / 52°F 87% 1019 mb
Low level cloud: 13%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
15%
0.0 In
12:00

NW
NW

9 / 18 mph 60 / 60°F 73% 1021 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

4 / 8 mph 59 / 59°F 78% 1018 mb
Low level cloud: 17%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
20%
0.0 In
Wed 29
May
00:00

NNE
NNE

4 / 9 mph 53 / 52°F 88% 1020 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 17%
Most Significant Cloud Type: medium
5%
0.0 In
06:00

ESE
ESE

6 / 13 mph 53 / 51°F 85% 1017 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 4%
Most Significant Cloud Type: medium
12%
0.0 In
12:00

NNE
NNE

8 / 15 mph 62 / 62°F 70% 1018 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 21%
Most Significant Cloud Type: medium
3%
0.0 In
18:00

E
E

10 / 20 mph 65 / 65°F 80% 1013 mb
Low level cloud: 13%
Mid level cloud: 27%
High level cloud: 6%
Most Significant Cloud Type: low
23%
0.0 In
Thu 30
May
00:00

E
E

6 / 11 mph 54 / 53°F 88% 1018 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 84%
Most Significant Cloud Type: medium
16%
0.0 In
06:00

E
E

8 / 16 mph 56 / 54°F 89% 1013 mb
Low level cloud: 14%
Mid level cloud: 11%
High level cloud: 100%
Most Significant Cloud Type: low
29%
0.0 In
12:00

NNE
NNE

6 / 11 mph 59 / 58°F 80% 1017 mb
Low level cloud: 87%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: low
93%
0.0 In
18:00

ESE
ESE

8 / 16 mph 62 / 62°F 88% 1009 mb
Low level cloud: 0%
Mid level cloud: 28%
High level cloud: 100%
Most Significant Cloud Type: medium
32%
0.1 In
Fri 31
May
00:00

ENE
ENE

2 / 4 mph 56 / 58°F 89% 1017 mb
Low level cloud: 78%
Mid level cloud: 17%
High level cloud: 10%
Most Significant Cloud Type: low
85%
0.0 In
06:00

E
E

11 / 24 mph 53 / 49°F 91% 1007 mb
Low level cloud: 20%
Mid level cloud: 61%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.3 In
12:00

NNW
NNW

6 / 11 mph 63 / 63°F 82% 1016 mb
Low level cloud: 63%
Mid level cloud: 11%
High level cloud: 21%
Most Significant Cloud Type: low
69%
0.0 In
18:00

NNE
NNE

2 / 5 mph 61 / 61°F 91% 1010 mb
Low level cloud: 75%
Mid level cloud: 12%
High level cloud: 47%
Most Significant Cloud Type: low
84%
0.4 In
Sat 01
Jun
00:00

ESE
ESE

1 / 2 mph 59 / 59°F 95% 1012 mb
Low level cloud: 71%
Mid level cloud: 66%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.1 In
06:00

ESE
ESE

2 / 3 mph 54 / 54°F 89% 1011 mb
Low level cloud: 21%
Mid level cloud: 14%
High level cloud: 48%
Most Significant Cloud Type: low
31%
0.0 In
12:00

WSW
WSW

4 / 8 mph 61 / 61°F 97% 1010 mb
Low level cloud: 100%
Mid level cloud: 81%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.5 In
18:00

NE
NE

3 / 7 mph 59 / 59°F 80% 1011 mb
Low level cloud: 14%
Mid level cloud: 46%
High level cloud: 3%
Most Significant Cloud Type: medium
84%
0.0 In
Sun 02
Jun
00:00

SSW
SSW

6 / 11 mph 56 / 55°F 91% 1009 mb
Low level cloud: 97%
Mid level cloud: 31%
High level cloud: 26%
Most Significant Cloud Type: low
100%
0.0 In
06:00

WSW
WSW

5 / 10 mph 53 / 52°F 97% 1009 mb
Low level cloud: 92%
Mid level cloud: 100%
High level cloud: 19%
Most Significant Cloud Type: low
100%
0.4 In
12:00

S
S

9 / 18 mph 58 / 57°F 77% 1011 mb
Low level cloud: 91%
Mid level cloud: 11%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
18:00

SW
SW

3 / 6 mph 61 / 61°F 80% 1009 mb
Low level cloud: 13%
Mid level cloud: 6%
High level cloud: 15%
Most Significant Cloud Type: low
16%
0.3 In
Mon 03
Jun
00:00

NE
NE

4 / 9 mph 54 / 53°F 91% 1013 mb
Low level cloud: 13%
Mid level cloud: 46%
High level cloud: 9%
Most Significant Cloud Type: medium
82%
0.0 In
06:00

SE
SE

8 / 17 mph 52 / 49°F 91% 1009 mb
Low level cloud: 59%
Mid level cloud: 97%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.1 In
12:00

ENE
ENE

15 / 30 mph 70 / 69°F 79% 1010 mb
Low level cloud: 37%
Mid level cloud: 45%
High level cloud: 33%
Most Significant Cloud Type: low
56%
0.0 In
18:00

SSE
SSE

11 / 23 mph 58 / 55°F 81% 1009 mb
Low level cloud: 11%
Mid level cloud: 26%
High level cloud: 8%
Most Significant Cloud Type: low
21%
0.2 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