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Underriver Ho 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Underriver Ho

Kent, United Kingdom

Long range weather outlook for Underriver Ho includes 14 day forecast summary:

The outlook for Underriver Ho in the two weeks ahead shows the average daytime maximum temperature will be around 16°C, with a high for the two weeks of 18°C expected on the evening of Monday 20th. The average minimum temperature will be 11°C, dipping to its lowest on the morning of Friday 17th at 8°C. The next 14 days will have some days seeing a little precipitation and some days with rain. Predictions are Tuesday 14th will have the most precipitation with an accumulation of around 11.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Tue 14
May
12:00

S
S

14 / 18 mph 58 / 54°F 85% 1002 mb
Low level cloud: 83%
Mid level cloud: 51%
High level cloud: 98%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSE
SSE

15 / 17 mph 59 / 56°F 88% 1002 mb
Low level cloud: 78%
Mid level cloud: 32%
High level cloud: 59%
Most Significant Cloud Type: low
96%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SE
SE

15 / 17 mph 58 / 55°F 92% 1002 mb
Low level cloud: 71%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: low
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SE
SE

12 / 14 mph 56 / 53°F 96% 1003 mb
Low level cloud: 72%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: low
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 15
May
00:00

SE
SE

9 / 14 mph 53 / 50°F 98% 1003 mb
Low level cloud: 83%
Mid level cloud: 95%
High level cloud: 46%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ESE
ESE

6 / 11 mph 52 / 50°F 99% 1004 mb
Low level cloud: 73%
Mid level cloud: 23%
High level cloud: 21%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SE
SE

6 / 9 mph 54 / 51°F 95% 1005 mb
Low level cloud: 56%
Mid level cloud: 22%
High level cloud: 100%
Most Significant Cloud Type: low
75%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSE
SSE

8 / 10 mph 59 / 56°F 77% 1005 mb
Low level cloud: 47%
Mid level cloud: 6%
High level cloud: 97%
Most Significant Cloud Type: low
60%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSE
SSE

10 / 11 mph 62 / 61°F 69% 1005 mb
Low level cloud: 15%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSE
SSE

9 / 11 mph 62 / 61°F 67% 1005 mb
Low level cloud: 3%
Mid level cloud: 4%
High level cloud: 14%
Most Significant Cloud Type: low
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

ESE
ESE

5 / 6 mph 63 / 61°F 80% 1005 mb
Low level cloud: 1%
Mid level cloud: 8%
High level cloud: 100%
Most Significant Cloud Type: medium
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ESE
ESE

4 / 8 mph 54 / 53°F 90% 1006 mb
Low level cloud: 2%
Mid level cloud: 10%
High level cloud: 82%
Most Significant Cloud Type: medium
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 16
May
00:00

E
E

4 / 8 mph 51 / 51°F 93% 1006 mb
Low level cloud: 3%
Mid level cloud: 41%
High level cloud: 100%
Most Significant Cloud Type: medium
53%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

E
E

3 / 5 mph 50 / 51°F 94% 1006 mb
Low level cloud: 15%
Mid level cloud: 32%
High level cloud: 100%
Most Significant Cloud Type: low
38%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NE
NE

2 / 3 mph 55 / 54°F 91% 1006 mb
Low level cloud: 20%
Mid level cloud: 43%
High level cloud: 100%
Most Significant Cloud Type: low
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NE
NE

3 / 4 mph 56 / 56°F 88% 1006 mb
Low level cloud: 54%
Mid level cloud: 96%
High level cloud: 100%
Most Significant Cloud Type: low
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NE
NE

4 / 5 mph 56 / 56°F 91% 1006 mb
Low level cloud: 81%
Mid level cloud: 91%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
15:00

W
W

2 / 3 mph 56 / 57°F 91% 1006 mb
Low level cloud: 75%
Mid level cloud: 93%
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

WSW
WSW

5 / 7 mph 57 / 55°F 95% 1005 mb
Low level cloud: 35%
Mid level cloud: 100%
High level cloud: 22%
Most Significant Cloud Type: low
72%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

WSW
WSW

4 / 6 mph 54 / 54°F 96% 1006 mb
Low level cloud: 40%
Mid level cloud: 100%
High level cloud: 11%
Most Significant Cloud Type: low
76%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 17
May
00:00

SSW
SSW

5 / 9 mph 51 / 50°F 95% 1007 mb
Low level cloud: 15%
Mid level cloud: 45%
High level cloud: 1%
Most Significant Cloud Type: medium
87%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

S
S

4 / 9 mph 49 / 47°F 90% 1007 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 11%
Most Significant Cloud Type: medium
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SE
SE

4 / 7 mph 53 / 50°F 89% 1009 mb
Low level cloud: 4%
Mid level cloud: 20%
High level cloud: 14%
Most Significant Cloud Type: medium
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSE
SSE

9 / 11 mph 60 / 59°F 83% 1010 mb
Low level cloud: 82%
Mid level cloud: 14%
High level cloud: 96%
Most Significant Cloud Type: low
98%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSE
SSE

9 / 13 mph 62 / 61°F 77% 1011 mb
Low level cloud: 69%
Mid level cloud: 7%
High level cloud: 100%
Most Significant Cloud Type: low
83%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
15:00

SE
SE

7 / 8 mph 63 / 60°F 78% 1012 mb
Low level cloud: 11%
Mid level cloud: 30%
High level cloud: 44%
Most Significant Cloud Type: low
27%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

E
E

6 / 8 mph 60 / 59°F 83% 1012 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 33%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ENE
ENE

5 / 9 mph 54 / 53°F 95% 1013 mb
Low level cloud: 15%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 18
May
00:00

NNE
NNE

5 / 8 mph 52 / 51°F 96% 1013 mb
Low level cloud: 32%
Mid level cloud: 95%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NNE
NNE

4 / 8 mph 51 / 50°F 98% 1013 mb
Low level cloud: 74%
Mid level cloud: 97%
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

NNE
NNE

5 / 8 mph 54 / 52°F 97% 1013 mb
Low level cloud: 87%
Mid level cloud: 97%
High level cloud: 81%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NNE
NNE

5 / 8 mph 56 / 55°F 93% 1014 mb
Low level cloud: 86%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NE
NE

7 / 10 mph 60 / 59°F 87% 1013 mb
Low level cloud: 76%
Mid level cloud: 30%
High level cloud: 100%
Most Significant Cloud Type: low
97%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NE
NE

8 / 11 mph 61 / 60°F 85% 1012 mb
Low level cloud: 90%
Mid level cloud: 25%
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

NE
NE

11 / 15 mph 58 / 56°F 92% 1012 mb
Low level cloud: 65%
Mid level cloud: 29%
High level cloud: 100%
Most Significant Cloud Type: low
87%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NE
NE

6 / 11 mph 54 / 52°F 95% 1013 mb
Low level cloud: 12%
Mid level cloud: 46%
High level cloud: 57%
Most Significant Cloud Type: medium
81%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 19
May
00:00

NNE
NNE

7 / 12 mph 53 / 51°F 94% 1013 mb
Low level cloud: 3%
Mid level cloud: 43%
High level cloud: 33%
Most Significant Cloud Type: medium
54%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

N
N

7 / 14 mph 49 / 46°F 96% 1012 mb
Low level cloud: 18%
Mid level cloud: 51%
High level cloud: 21%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NNE
NNE

9 / 13 mph 53 / 49°F 94% 1012 mb
Low level cloud: 40%
Mid level cloud: 51%
High level cloud: 17%
Most Significant Cloud Type: low
59%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NE
NE

13 / 17 mph 62 / 60°F 77% 1012 mb
Low level cloud: 45%
Mid level cloud: 28%
High level cloud: 78%
Most Significant Cloud Type: low
63%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NE
NE

14 / 18 mph 63 / 63°F 77% 1011 mb
Low level cloud: 73%
Mid level cloud: 27%
High level cloud: 100%
Most Significant Cloud Type: low
94%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NE
NE

11 / 16 mph 62 / 61°F 86% 1010 mb
Low level cloud: 55%
Mid level cloud: 32%
High level cloud: 100%
Most Significant Cloud Type: low
78%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
18:00

NE
NE

9 / 12 mph 60 / 56°F 90% 1010 mb
Low level cloud: 26%
Mid level cloud: 21%
High level cloud: 100%
Most Significant Cloud Type: low
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NNE
NNE

5 / 9 mph 53 / 51°F 98% 1011 mb
Low level cloud: 67%
Mid level cloud: 44%
High level cloud: 97%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 20
May
00:00

NNE
NNE

7 / 11 mph 52 / 50°F 98% 1011 mb
Low level cloud: 92%
Mid level cloud: 92%
High level cloud: 79%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

N
N

6 / 10 mph 52 / 50°F 98% 1010 mb
Low level cloud: 95%
Mid level cloud: 45%
High level cloud: 89%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

N
N

5 / 8 mph 53 / 51°F 98% 1010 mb
Low level cloud: 100%
Mid level cloud: 56%
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

NNW
NNW

6 / 9 mph 53 / 51°F 98% 1011 mb
Low level cloud: 94%
Mid level cloud: 46%
High level cloud: 3%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

N
N

4 / 6 mph 57 / 56°F 93% 1011 mb
Low level cloud: 86%
Mid level cloud: 19%
High level cloud: 6%
Most Significant Cloud Type: low
92%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NNW
NNW

4 / 5 mph 62 / 60°F 84% 1010 mb
Low level cloud: 78%
Mid level cloud: 9%
High level cloud: 7%
Most Significant Cloud Type: low
82%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NNE
NNE

6 / 8 mph 64 / 60°F 87% 1010 mb
Low level cloud: 48%
Mid level cloud: 6%
High level cloud: 6%
Most Significant Cloud Type: low
50%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NNE
NNE

4 / 8 mph 55 / 55°F 95% 1011 mb
Low level cloud: 21%
Mid level cloud: 3%
High level cloud: 15%
Most Significant Cloud Type: low
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Tue 21
May
00:00

SSW
SSW

3 / 7 mph 52 / 51°F 90% 1016 mb
Low level cloud: 3%
Mid level cloud: 82%
High level cloud: 32%
Most Significant Cloud Type: medium
92%
0.0 In
06:00

NNE
NNE

4 / 8 mph 53 / 53°F 88% 1023 mb
Low level cloud: 3%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: medium
37%
0.0 In
12:00

SE
SE

11 / 24 mph 59 / 59°F 68% 1013 mb
Low level cloud: 0%
Mid level cloud: 84%
High level cloud: 90%
Most Significant Cloud Type: medium
87%
0.0 In
Wed 22
May
00:00

SW
SW

10 / 21 mph 54 / 51°F 97% 1010 mb
Low level cloud: 84%
Mid level cloud: 10%
High level cloud: 4%
Most Significant Cloud Type: low
87%
0.0 In
06:00

NE
NE

4 / 7 mph 52 / 52°F 95% 1012 mb
Low level cloud: 77%
Mid level cloud: 32%
High level cloud: 33%
Most Significant Cloud Type: low
91%
0.0 In
12:00

NW
NW

5 / 11 mph 58 / 58°F 96% 1010 mb
Low level cloud: 97%
Mid level cloud: 46%
High level cloud: 11%
Most Significant Cloud Type: low
100%
0.0 In
18:00

ESE
ESE

4 / 9 mph 59 / 59°F 90% 1011 mb
Low level cloud: 80%
Mid level cloud: 26%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.1 In
Thu 23
May
00:00

SSW
SSW

4 / 9 mph 59 / 59°F 98% 1010 mb
Low level cloud: 97%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
06:00

NE
NE

10 / 21 mph 49 / 45°F 97% 1009 mb
Low level cloud: 100%
Mid level cloud: 95%
High level cloud: 71%
Most Significant Cloud Type: low
100%
0.1 In
12:00

SSW
SSW

11 / 24 mph 62 / 62°F 84% 1013 mb
Low level cloud: 72%
Mid level cloud: 44%
High level cloud: 32%
Most Significant Cloud Type: low
90%
0.0 In
18:00

NNE
NNE

7 / 15 mph 54 / 52°F 96% 1010 mb
Low level cloud: 87%
Mid level cloud: 91%
High level cloud: 35%
Most Significant Cloud Type: low
100%
0.2 In
Fri 24
May
00:00

SSW
SSW

6 / 12 mph 55 / 54°F 97% 1015 mb
Low level cloud: 26%
Mid level cloud: 25%
High level cloud: 13%
Most Significant Cloud Type: low
35%
0.0 In
06:00

N
N

12 / 26 mph 44 / 38°F 91% 1015 mb
Low level cloud: 49%
Mid level cloud: 24%
High level cloud: 1%
Most Significant Cloud Type: low
57%
0.0 In
12:00

SW
SW

11 / 22 mph 66 / 66°F 71% 1018 mb
Low level cloud: 4%
Mid level cloud: 11%
High level cloud: 40%
Most Significant Cloud Type: medium
23%
0.0 In
18:00

NE
NE

6 / 13 mph 52 / 50°F 80% 1018 mb
Low level cloud: 82%
Mid level cloud: 3%
High level cloud: 51%
Most Significant Cloud Type: low
89%
0.0 In
Sat 25
May
00:00

WSW
WSW

4 / 7 mph 61 / 61°F 92% 1020 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 30%
Most Significant Cloud Type: medium
5%
0.0 In
06:00

SE
SE

4 / 8 mph 49 / 48°F 80% 1017 mb
Low level cloud: 100%
Mid level cloud: 89%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
12:00

W
W

5 / 10 mph 68 / 68°F 71% 1022 mb
Low level cloud: 92%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: low
96%
0.0 In
18:00

ESE
ESE

10 / 20 mph 51 / 47°F 85% 1011 mb
Low level cloud: 71%
Mid level cloud: 70%
High level cloud: 99%
Most Significant Cloud Type: low
100%
0.0 In
Sun 26
May
00:00

NNE
NNE

2 / 4 mph 68 / 67°F 90% 1023 mb
Low level cloud: 11%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: low
14%
0.0 In
06:00

NE
NE

9 / 18 mph 49 / 45°F 98% 1006 mb
Low level cloud: 94%
Mid level cloud: 75%
High level cloud: 31%
Most Significant Cloud Type: low
100%
0.1 In
12:00

ESE
ESE

4 / 9 mph 72 / 72°F 69% 1023 mb
Low level cloud: 33%
Mid level cloud: 7%
High level cloud: 42%
Most Significant Cloud Type: low
40%
0.0 In
18:00

E
E

5 / 11 mph 57 / 56°F 85% 1009 mb
Low level cloud: 60%
Mid level cloud: 78%
High level cloud: 0%
Most Significant Cloud Type: low
87%
0.1 In
Mon 27
May
00:00

SSE
SSE

2 / 4 mph 66 / 66°F 88% 1023 mb
Low level cloud: 0%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: medium
18%
0.1 In
06:00

E
E

9 / 18 mph 50 / 46°F 93% 1010 mb
Low level cloud: 92%
Mid level cloud: 47%
High level cloud: 15%
Most Significant Cloud Type: low
100%
0.0 In
12:00

SE
SE

6 / 12 mph 72 / 76°F 64% 1023 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 5%
Most Significant Cloud Type: medium
3%
0.0 In
18:00

ESE
ESE

7 / 14 mph 55 / 54°F 98% 1008 mb
Low level cloud: 82%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
98%
0.1 In
Tue 28
May
00:00

E
E

3 / 6 mph 61 / 61°F 86% 1022 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: medium
47%
0.0 In
06:00

W
W

8 / 17 mph 53 / 51°F 93% 1009 mb
Low level cloud: 42%
Mid level cloud: 6%
High level cloud: 3%
Most Significant Cloud Type: low
44%
0.0 In
12:00

NE
NE

6 / 13 mph 63 / 63°F 89% 1021 mb
Low level cloud: 29%
Mid level cloud: 45%
High level cloud: 94%
Most Significant Cloud Type: low
56%
0.0 In
18:00

NNE
NNE

10 / 21 mph 58 / 55°F 87% 1009 mb
Low level cloud: 32%
Mid level cloud: 42%
High level cloud: 0%
Most Significant Cloud Type: low
46%
0.0 In
Wed 29
May
00:00

NE
NE

13 / 28 mph 51 / 47°F 92% 1021 mb
Low level cloud: 48%
Mid level cloud: 56%
High level cloud: 100%
Most Significant Cloud Type: low
80%
0.1 In
06:00

NNE
NNE

14 / 30 mph 47 / 42°F 88% 1014 mb
Low level cloud: 88%
Mid level cloud: 26%
High level cloud: 0%
Most Significant Cloud Type: low
97%
0.0 In
12:00

ENE
ENE

13 / 28 mph 60 / 60°F 73% 1019 mb
Low level cloud: 57%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: low
63%
0.0 In
18:00

NE
NE

15 / 32 mph 52 / 48°F 79% 1017 mb
Low level cloud: 37%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: low
42%
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

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