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Melling Mount 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Melling Mount

Sefton, United Kingdom

Long range weather outlook for Melling Mount includes 14 day forecast summary:

The forecast for Melling Mount in the coming two weeks is predicting the average daytime maximum temperature will be around 18°C, with a high for the two weeks of 20°C expected on the afternoon of Sunday 19th. The average minimum temperature will be 12°C, dipping to its lowest on the morning of Tuesday 21st at 8°C. The coming 14 days will have some days seeing a little precipitation and some days with rain. Current predictions suggest Wednesday 22nd will have the most precipitation with an accumulation of around 32.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sat 18
May
15:00

NNW
NNW

6 / 9 mph 64 / 64°F 83% 1015 mb
Low level cloud: 87%
Mid level cloud: 23%
High level cloud: 1%
Most Significant Cloud Type: low
95%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

N
N

6 / 10 mph 66 / 64°F 82% 1015 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ENE
ENE

4 / 6 mph 62 / 60°F 85% 1016 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 19
May
00:00

NE
NE

1 / 2 mph 57 / 57°F 83% 1016 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

ENE
ENE

1 / 2 mph 54 / 54°F 80% 1016 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ENE
ENE

1 / 2 mph 55 / 54°F 75% 1017 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ENE
ENE

3 / 4 mph 62 / 60°F 57% 1017 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: high
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NE
NE

5 / 7 mph 67 / 65°F 49% 1016 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 7%
Most Significant Cloud Type: high
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NNE
NNE

7 / 11 mph 68 / 67°F 52% 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

NNE
NNE

8 / 11 mph 68 / 67°F 67% 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
21:00

E
E

8 / 12 mph 62 / 60°F 74% 1017 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 20
May
00:00

ESE
ESE

5 / 8 mph 56 / 55°F 79% 1017 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: medium
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ESE
ESE

4 / 7 mph 53 / 52°F 81% 1017 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 0%
Most Significant Cloud Type: medium
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

E
E

6 / 9 mph 54 / 50°F 81% 1017 mb
Low level cloud: 1%
Mid level cloud: 25%
High level cloud: 1%
Most Significant Cloud Type: medium
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

E
E

8 / 10 mph 59 / 57°F 71% 1016 mb
Low level cloud: 16%
Mid level cloud: 19%
High level cloud: 10%
Most Significant Cloud Type: low
23%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

ENE
ENE

9 / 11 mph 66 / 64°F 63% 1015 mb
Low level cloud: 40%
Mid level cloud: 20%
High level cloud: 100%
Most Significant Cloud Type: low
58%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

ENE
ENE

8 / 11 mph 65 / 64°F 66% 1014 mb
Low level cloud: 68%
Mid level cloud: 38%
High level cloud: 3%
Most Significant Cloud Type: low
81%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

ENE
ENE

8 / 11 mph 64 / 63°F 70% 1013 mb
Low level cloud: 66%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
81%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

E
E

9 / 13 mph 58 / 55°F 76% 1014 mb
Low level cloud: 55%
Mid level cloud: 19%
High level cloud: 3%
Most Significant Cloud Type: low
62%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 21
May
00:00

E
E

6 / 9 mph 53 / 51°F 64% 1013 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 12%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

E
E

5 / 7 mph 51 / 49°F 57% 1012 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 9%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

E
E

4 / 7 mph 50 / 48°F 59% 1012 mb
Low level cloud: 0%
Mid level cloud: 27%
High level cloud: 11%
Most Significant Cloud Type: medium
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ENE
ENE

3 / 4 mph 59 / 58°F 49% 1011 mb
Low level cloud: 0%
Mid level cloud: 30%
High level cloud: 2%
Most Significant Cloud Type: medium
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NNW
NNW

5 / 6 mph 64 / 62°F 50% 1010 mb
Low level cloud: 0%
Mid level cloud: 27%
High level cloud: 100%
Most Significant Cloud Type: medium
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NW
NW

8 / 11 mph 64 / 62°F 57% 1009 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 32%
Most Significant Cloud Type: medium
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NW
NW

6 / 8 mph 62 / 59°F 68% 1009 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 100%
Most Significant Cloud Type: medium
23%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NW
NW

4 / 8 mph 56 / 55°F 75% 1010 mb
Low level cloud: 8%
Mid level cloud: 77%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 22
May
00:00

NW
NW

4 / 6 mph 55 / 54°F 76% 1010 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 100%
Most Significant Cloud Type: medium
27%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NW
NW

5 / 8 mph 54 / 53°F 75% 1009 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: medium
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NW
NW

4 / 8 mph 54 / 52°F 77% 1010 mb
Low level cloud: 52%
Mid level cloud: 66%
High level cloud: 100%
Most Significant Cloud Type: low
87%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NW
NW

8 / 11 mph 55 / 53°F 93% 1008 mb
Low level cloud: 64%
Mid level cloud: 77%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
12:00

WNW
WNW

10 / 11 mph 58 / 55°F 98% 1008 mb
Low level cloud: 95%
Mid level cloud: 91%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.4 In of precipitation over the past 3 hours.
0.4 In
15:00

NW
NW

19 / 21 mph 59 / 55°F 98% 1006 mb
Low level cloud: 95%
Mid level cloud: 75%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.4 In of precipitation over the past 3 hours.
0.4 In
18:00

NNW
NNW

15 / 17 mph 58 / 55°F 98% 1005 mb
Low level cloud: 90%
Mid level cloud: 80%
High level cloud: 62%
Most Significant Cloud Type: low
100%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
21:00

N
N

8 / 10 mph 56 / 54°F 98% 1004 mb
Low level cloud: 89%
Mid level cloud: 91%
High level cloud: 30%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Thu 23
May
00:00

NE
NE

3 / 4 mph 55 / 55°F 98% 1004 mb
Low level cloud: 92%
Mid level cloud: 64%
High level cloud: 11%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
03:00

E
E

2 / 4 mph 54 / 54°F 98% 1004 mb
Low level cloud: 100%
Mid level cloud: 96%
High level cloud: 3%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
06:00

ESE
ESE

5 / 9 mph 54 / 52°F 98% 1005 mb
Low level cloud: 100%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SE
SE

9 / 13 mph 55 / 53°F 94% 1007 mb
Low level cloud: 95%
Mid level cloud: 43%
High level cloud: 65%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSE
SSE

12 / 17 mph 61 / 61°F 73% 1009 mb
Low level cloud: 91%
Mid level cloud: 26%
High level cloud: 6%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSE
SSE

13 / 19 mph 64 / 62°F 77% 1010 mb
Low level cloud: 28%
Mid level cloud: 21%
High level cloud: 8%
Most Significant Cloud Type: low
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSE
SSE

10 / 15 mph 64 / 62°F 78% 1011 mb
Low level cloud: 6%
Mid level cloud: 12%
High level cloud: 1%
Most Significant Cloud Type: low
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ESE
ESE

8 / 13 mph 59 / 57°F 92% 1013 mb
Low level cloud: 13%
Mid level cloud: 20%
High level cloud: 12%
Most Significant Cloud Type: low
21%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 24
May
00:00

ESE
ESE

8 / 13 mph 56 / 54°F 95% 1014 mb
Low level cloud: 31%
Mid level cloud: 32%
High level cloud: 32%
Most Significant Cloud Type: low
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SE
SE

6 / 10 mph 54 / 52°F 96% 1015 mb
Low level cloud: 49%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: low
53%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SSE
SSE

4 / 6 mph 56 / 54°F 91% 1016 mb
Low level cloud: 50%
Mid level cloud: 10%
High level cloud: 4%
Most Significant Cloud Type: low
54%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSE
SSE

4 / 5 mph 62 / 60°F 78% 1016 mb
Low level cloud: 42%
Mid level cloud: 8%
High level cloud: 3%
Most Significant Cloud Type: low
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

W
W

4 / 5 mph 66 / 63°F 67% 1016 mb
Low level cloud: 36%
Mid level cloud: 27%
High level cloud: 4%
Most Significant Cloud Type: low
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WNW
WNW

9 / 11 mph 64 / 62°F 78% 1016 mb
Low level cloud: 33%
Mid level cloud: 17%
High level cloud: 11%
Most Significant Cloud Type: low
40%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WNW
WNW

11 / 15 mph 58 / 54°F 82% 1017 mb
Low level cloud: 51%
Mid level cloud: 44%
High level cloud: 8%
Most Significant Cloud Type: low
67%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NW
NW

8 / 12 mph 55 / 52°F 84% 1018 mb
Low level cloud: 70%
Mid level cloud: 46%
High level cloud: 4%
Most Significant Cloud Type: low
86%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sat 25
May
00:00

ENE
ENE

10 / 21 mph 55 / 53°F 88% 1022 mb
Low level cloud: 11%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
10%
0.0 In
06:00

NE
NE

0 / 1 mph 59 / 59°F 80% 1024 mb
Low level cloud: 1%
Mid level cloud: 9%
High level cloud: 9%
Most Significant Cloud Type: medium
12%
0.0 In
12:00

SW
SW

5 / 11 mph 60 / 60°F 56% 1019 mb
Low level cloud: 48%
Mid level cloud: 92%
High level cloud: 4%
Most Significant Cloud Type: low
81%
0.0 In
18:00

SW
SW

1 / 3 mph 69 / 69°F 66% 1018 mb
Low level cloud: 38%
Mid level cloud: 19%
High level cloud: 54%
Most Significant Cloud Type: low
51%
0.0 In
Sun 26
May
00:00

SE
SE

7 / 14 mph 57 / 56°F 93% 1014 mb
Low level cloud: 7%
Mid level cloud: 83%
High level cloud: 80%
Most Significant Cloud Type: medium
100%
0.0 In
06:00

SE
SE

12 / 23 mph 53 / 49°F 94% 1018 mb
Low level cloud: 49%
Mid level cloud: 100%
High level cloud: 89%
Most Significant Cloud Type: low
94%
0.0 In
12:00

ESE
ESE

7 / 14 mph 58 / 57°F 88% 1006 mb
Low level cloud: 81%
Mid level cloud: 16%
High level cloud: 96%
Most Significant Cloud Type: low
98%
0.0 In
18:00

ESE
ESE

5 / 9 mph 68 / 68°F 84% 1013 mb
Low level cloud: 8%
Mid level cloud: 57%
High level cloud: 54%
Most Significant Cloud Type: medium
80%
0.0 In
Mon 27
May
00:00

WNW
WNW

4 / 8 mph 56 / 56°F 97% 1008 mb
Low level cloud: 83%
Mid level cloud: 63%
High level cloud: 7%
Most Significant Cloud Type: low
100%
0.2 In
06:00

E
E

9 / 19 mph 56 / 53°F 92% 1012 mb
Low level cloud: 45%
Mid level cloud: 68%
High level cloud: 8%
Most Significant Cloud Type: low
69%
0.1 In
12:00

WNW
WNW

10 / 21 mph 56 / 53°F 88% 1009 mb
Low level cloud: 53%
Mid level cloud: 71%
High level cloud: 17%
Most Significant Cloud Type: low
79%
0.0 In
18:00

ENE
ENE

13 / 28 mph 60 / 60°F 94% 1010 mb
Low level cloud: 91%
Mid level cloud: 43%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.2 In
Tue 28
May
00:00

NNW
NNW

8 / 17 mph 54 / 52°F 95% 1009 mb
Low level cloud: 86%
Mid level cloud: 96%
High level cloud: 7%
Most Significant Cloud Type: low
100%
0.4 In
06:00

ENE
ENE

7 / 15 mph 55 / 53°F 94% 1011 mb
Low level cloud: 62%
Mid level cloud: 83%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
12:00

NW
NW

7 / 15 mph 60 / 60°F 72% 1013 mb
Low level cloud: 71%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: low
80%
0.0 In
18:00

NE
NE

9 / 18 mph 61 / 61°F 90% 1009 mb
Low level cloud: 19%
Mid level cloud: 30%
High level cloud: 15%
Most Significant Cloud Type: low
30%
0.3 In
Wed 29
May
00:00

WSW
WSW

2 / 5 mph 59 / 59°F 82% 1013 mb
Low level cloud: 24%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: low
32%
0.0 In
06:00

ESE
ESE

2 / 4 mph 55 / 56°F 92% 1011 mb
Low level cloud: 79%
Mid level cloud: 26%
High level cloud: 22%
Most Significant Cloud Type: low
90%
0.1 In
12:00

SE
SE

11 / 23 mph 52 / 48°F 97% 1009 mb
Low level cloud: 85%
Mid level cloud: 94%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.2 In
18:00

SE
SE

4 / 9 mph 60 / 60°F 94% 1011 mb
Low level cloud: 51%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: low
78%
0.1 In
Thu 30
May
00:00

SSW
SSW

8 / 17 mph 55 / 53°F 94% 1004 mb
Low level cloud: 62%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: low
70%
0.3 In
06:00

SSE
SSE

5 / 11 mph 58 / 57°F 92% 1010 mb
Low level cloud: 2%
Mid level cloud: 6%
High level cloud: 62%
Most Significant Cloud Type: medium
13%
0.0 In
12:00

W
W

9 / 19 mph 57 / 55°F 73% 1006 mb
Low level cloud: 62%
Mid level cloud: 61%
High level cloud: 17%
Most Significant Cloud Type: low
85%
0.0 In
18:00

SE
SE

8 / 17 mph 59 / 58°F 87% 1006 mb
Low level cloud: 19%
Mid level cloud: 72%
High level cloud: 65%
Most Significant Cloud Type: medium
100%
0.0 In
Fri 31
May
00:00

SW
SW

9 / 18 mph 56 / 54°F 87% 1008 mb
Low level cloud: 22%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: low
32%
0.1 In
06:00

SE
SE

8 / 16 mph 55 / 53°F 96% 1002 mb
Low level cloud: 78%
Mid level cloud: 75%
High level cloud: 7%
Most Significant Cloud Type: low
100%
0.1 In
12:00

W
W

9 / 18 mph 58 / 56°F 64% 1011 mb
Low level cloud: 22%
Mid level cloud: 28%
High level cloud: 12%
Most Significant Cloud Type: low
33%
0.0 In
18:00

NW
NW

1 / 3 mph 68 / 68°F 82% 1002 mb
Low level cloud: 6%
Mid level cloud: 15%
High level cloud: 49%
Most Significant Cloud Type: low
16%
0.2 In
Sat 01
Jun
00:00

SE
SE

8 / 17 mph 53 / 51°F 96% 1011 mb
Low level cloud: 76%
Mid level cloud: 75%
High level cloud: 94%
Most Significant Cloud Type: low
100%
0.0 In
06:00

SE
SE

8 / 17 mph 52 / 49°F 94% 1003 mb
Low level cloud: 53%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: low
80%
0.0 In
12:00

SSE
SSE

15 / 32 mph 64 / 64°F 74% 1006 mb
Low level cloud: 86%
Mid level cloud: 29%
High level cloud: 10%
Most Significant Cloud Type: low
97%
0.3 In
18:00

SSW
SSW

4 / 9 mph 60 / 60°F 86% 1004 mb
Low level cloud: 2%
Mid level cloud: 69%
High level cloud: 100%
Most Significant Cloud Type: medium
79%
0.1 In
Sun 02
Jun
00:00

SSE
SSE

18 / 38 mph 61 / 61°F 80% 1000 mb
Low level cloud: 70%
Mid level cloud: 2%
High level cloud: 2%
Most Significant Cloud Type: low
71%
0.0 In
06:00

SE
SE

3 / 6 mph 55 / 55°F 95% 1007 mb
Low level cloud: 89%
Mid level cloud: 64%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.2 In
12:00

SW
SW

16 / 34 mph 61 / 61°F 57% 1010 mb
Low level cloud: 4%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: low
8%
0.0 In
18:00

WNW
WNW

9 / 19 mph 60 / 60°F 80% 1010 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 42%
Most Significant Cloud Type: medium
22%
0.1 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