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Cassop 14 Day Long Range Forecast

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

Durham County, United Kingdom

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

Taking a look at Cassop over the coming two weeks and the average daytime maximum temperature will be around 14°C, with a high for the two weeks of 17°C expected on the afternoon of Wednesday 26th. The average minimum temperature will be 9°C, dipping to its lowest on the morning of Monday 24th at 5°C. Expect the following 14 days ahead to have most days seeing a little rain. Predictions are Thursday 20th will have the most precipitation with an accumulation of around 20.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Thu 20
Sep
15:00

SSE
SSE

7 / 8 mph 57 / 55°F 74% 1003 mb
Low level cloud: 44%
Mid level cloud: 92%
High level cloud: 98%
Most Significant Cloud Type: low
88%
Expect 0.05 In of precipitation over the past 3 hours.
0.05 In
18:00

NE
NE

8 / 9 mph 53 / 50°F 95% 998 mb
Low level cloud: 96%
Mid level cloud: 99%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.47 In of precipitation over the past 3 hours.
0.47 In
21:00

NE
NE

13 / 15 mph 51 / 47°F 93% 994 mb
Low level cloud: 93%
Mid level cloud: 78%
High level cloud: 33%
Most Significant Cloud Type: low
100%
Expect 0.25 In of precipitation over the past 3 hours.
0.25 In
Fri 21
Sep
00:00

N
N

11 / 13 mph 50 / 46°F 92% 992 mb
Low level cloud: 92%
Mid level cloud: 84%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.22 In of precipitation over the past 3 hours.
0.22 In
03:00

WNW
WNW

22 / 26 mph 45 / 37°F 88% 994 mb
Low level cloud: 77%
Mid level cloud: 82%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.23 In of precipitation over the past 3 hours.
0.23 In
06:00

W
W

15 / 23 mph 46 / 39°F 83% 997 mb
Low level cloud: 1%
Mid level cloud: 20%
High level cloud: 100%
Most Significant Cloud Type: medium
25%
Expect 0.05 In of precipitation over the past 3 hours.
0.05 In
09:00

W
W

19 / 21 mph 52 / 46°F 73% 1000 mb
Low level cloud: 6%
Mid level cloud: 5%
High level cloud: 9%
Most Significant Cloud Type: low
8%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

WSW
WSW

14 / 16 mph 49 / 44°F 84% 1001 mb
Low level cloud: 94%
Mid level cloud: 89%
High level cloud: 33%
Most Significant Cloud Type: low
100%
Expect 0.10 In of precipitation over the past 3 hours.
0.10 In
15:00

WNW
WNW

16 / 18 mph 56 / 51°F 70% 1005 mb
Low level cloud: 5%
Mid level cloud: 7%
High level cloud: 34%
Most Significant Cloud Type: low
11%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
18:00

W
W

11 / 18 mph 52 / 47°F 77% 1009 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: medium
15%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
21:00

W
W

14 / 23 mph 49 / 43°F 81% 1011 mb
Low level cloud: 3%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: medium
20%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Sat 22
Sep
00:00

W
W

15 / 23 mph 48 / 42°F 77% 1012 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

W
W

13 / 21 mph 47 / 41°F 76% 1015 mb
Low level cloud: 8%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
8%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

W
W

10 / 17 mph 45 / 40°F 79% 1016 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 71%
Most Significant Cloud Type: high
70%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

W
W

13 / 16 mph 52 / 47°F 69% 1017 mb
Low level cloud: 2%
Mid level cloud: 0%
High level cloud: 73%
Most Significant Cloud Type: medium
10%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

W
W

13 / 14 mph 56 / 52°F 61% 1017 mb
Low level cloud: 4%
Mid level cloud: 24%
High level cloud: 77%
Most Significant Cloud Type: medium
36%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

W
W

10 / 13 mph 56 / 53°F 62% 1017 mb
Low level cloud: 0%
Mid level cloud: 71%
High level cloud: 77%
Most Significant Cloud Type: medium
74%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

WSW
WSW

4 / 6 mph 52 / 50°F 73% 1016 mb
Low level cloud: 0%
Mid level cloud: 71%
High level cloud: 83%
Most Significant Cloud Type: medium
74%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

SSW
SSW

2 / 3 mph 49 / 49°F 81% 1016 mb
Low level cloud: 0%
Mid level cloud: 76%
High level cloud: 71%
Most Significant Cloud Type: medium
79%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Sun 23
Sep
00:00

NNW
NNW

2 / 4 mph 48 / 48°F 85% 1014 mb
Low level cloud: 3%
Mid level cloud: 95%
High level cloud: 90%
Most Significant Cloud Type: medium
100%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
03:00

NNE
NNE

5 / 7 mph 48 / 45°F 89% 1013 mb
Low level cloud: 40%
Mid level cloud: 97%
High level cloud: 95%
Most Significant Cloud Type: low
85%
Expect 0.05 In of precipitation over the past 3 hours.
0.05 In
06:00

N
N

8 / 11 mph 47 / 43°F 90% 1012 mb
Low level cloud: 34%
Mid level cloud: 99%
High level cloud: 89%
Most Significant Cloud Type: medium
100%
Expect 0.11 In of precipitation over the past 3 hours.
0.11 In
09:00

NE
NE

15 / 20 mph 49 / 43°F 86% 1013 mb
Low level cloud: 90%
Mid level cloud: 100%
High level cloud: 99%
Most Significant Cloud Type: low
100%
Expect 0.11 In of precipitation over the past 3 hours.
0.11 In
12:00

NNE
NNE

17 / 23 mph 50 / 44°F 73% 1016 mb
Low level cloud: 16%
Mid level cloud: 99%
High level cloud: 96%
Most Significant Cloud Type: medium
100%
Expect 0.08 In of precipitation over the past 3 hours.
0.08 In
15:00

N
N

18 / 21 mph 52 / 46°F 66% 1019 mb
Low level cloud: 5%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
6%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
18:00

NNW
NNW

11 / 19 mph 47 / 42°F 67% 1023 mb
Low level cloud: 1%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
10%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

NW
NW

8 / 14 mph 46 / 41°F 69% 1027 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Mon 24
Sep
00:00

WNW
WNW

8 / 15 mph 43 / 38°F 71% 1030 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 56%
Most Significant Cloud Type: medium
5%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

W
W

8 / 16 mph 41 / 36°F 71% 1031 mb
Low level cloud: 0%
Mid level cloud: 71%
High level cloud: 77%
Most Significant Cloud Type: medium
74%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

W
W

10 / 18 mph 42 / 36°F 77% 1033 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: medium
43%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

WNW
WNW

15 / 18 mph 51 / 45°F 69% 1034 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 1%
Most Significant Cloud Type: medium
12%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

WNW
WNW

15 / 17 mph 56 / 52°F 62% 1035 mb
Low level cloud: 9%
Mid level cloud: 6%
High level cloud: 6%
Most Significant Cloud Type: low
11%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

W
W

16 / 19 mph 56 / 52°F 63% 1034 mb
Low level cloud: 11%
Mid level cloud: 29%
High level cloud: 17%
Most Significant Cloud Type: low
23%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

W
W

11 / 18 mph 50 / 46°F 75% 1034 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 32%
Most Significant Cloud Type: medium
22%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

W
W

12 / 20 mph 49 / 44°F 77% 1035 mb
Low level cloud: 1%
Mid level cloud: 3%
High level cloud: 88%
Most Significant Cloud Type: medium
9%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Tue 25
Sep
00:00

W
W

12 / 20 mph 49 / 44°F 79% 1035 mb
Low level cloud: 5%
Mid level cloud: 29%
High level cloud: 85%
Most Significant Cloud Type: medium
47%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

W
W

10 / 17 mph 49 / 44°F 80% 1034 mb
Low level cloud: 9%
Mid level cloud: 70%
High level cloud: 81%
Most Significant Cloud Type: medium
98%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

W
W

9 / 14 mph 48 / 45°F 83% 1034 mb
Low level cloud: 22%
Mid level cloud: 76%
High level cloud: 90%
Most Significant Cloud Type: medium
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

WSW
WSW

10 / 14 mph 51 / 47°F 81% 1034 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 12%
Most Significant Cloud Type: medium
44%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
12:00

W
W

13 / 15 mph 58 / 55°F 66% 1033 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 11%
Most Significant Cloud Type: medium
8%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

WSW
WSW

12 / 14 mph 58 / 56°F 62% 1031 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 91%
Most Significant Cloud Type: medium
5%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

SW
SW

10 / 13 mph 54 / 51°F 78% 1030 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 10%
Most Significant Cloud Type: medium
3%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

SW
SW

11 / 17 mph 51 / 47°F 79% 1030 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Wed 26
Sep
00:00

SW
SW

11 / 19 mph 49 / 44°F 81% 1029 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

SW
SW

12 / 21 mph 48 / 43°F 85% 1028 mb
Low level cloud: 1%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

SW
SW

13 / 22 mph 48 / 42°F 86% 1027 mb
Low level cloud: 3%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
2%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

SW
SW

15 / 18 mph 55 / 51°F 72% 1027 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

SW
SW

15 / 17 mph 62 / 61°F 60% 1026 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

SW
SW

15 / 19 mph 62 / 62°F 60% 1024 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

SW
SW

9 / 17 mph 56 / 53°F 74% 1024 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 6%
Most Significant Cloud Type: medium
4%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

SW
SW

9 / 17 mph 53 / 50°F 78% 1024 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 2%
Most Significant Cloud Type: medium
1%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Thu 27
Sep
00:00

W
W

4 / 5 mph 52 / 51°F 87% 1034 mb
Low level cloud: 2%
Mid level cloud: 5%
High level cloud: 1%
Most Significant Cloud Type: medium
9%
0.00 In
06:00

W
W

7 / 14 mph 46 / 42°F 80% 1034 mb
Low level cloud: 21%
Mid level cloud: 76%
High level cloud: 5%
Most Significant Cloud Type: medium
100%
0.00 In
12:00

S
S

7 / 8 mph 63 / 63°F 62% 1034 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 6%
Most Significant Cloud Type: medium
9%
0.00 In
18:00

N
N

7 / 8 mph 56 / 54°F 90% 1024 mb
Low level cloud: 91%
Mid level cloud: 73%
High level cloud: 70%
Most Significant Cloud Type: low
100%
0.04 In
Fri 28
Sep
00:00

NW
NW

7 / 8 mph 49 / 46°F 75% 1022 mb
Low level cloud: 5%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
5%
0.00 In
06:00

ENE
ENE

4 / 5 mph 55 / 55°F 96% 1019 mb
Low level cloud: 95%
Mid level cloud: 84%
High level cloud: 82%
Most Significant Cloud Type: low
100%
0.21 In
12:00

W
W

15 / 18 mph 52 / 47°F 73% 1028 mb
Low level cloud: 62%
Mid level cloud: 94%
High level cloud: 99%
Most Significant Cloud Type: low
100%
0.02 In
18:00

SSW
SSW

9 / 16 mph 60 / 60°F 86% 1011 mb
Low level cloud: 6%
Mid level cloud: 72%
High level cloud: 83%
Most Significant Cloud Type: medium
92%
0.00 In
Sat 29
Sep
00:00

W
W

20 / 34 mph 51 / 45°F 78% 1023 mb
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 32%
Most Significant Cloud Type: medium
24%
0.00 In
06:00

W
W

9 / 14 mph 52 / 49°F 86% 1005 mb
Low level cloud: 66%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
71%
0.07 In
12:00

W
W

22 / 25 mph 60 / 60°F 70% 1021 mb
Low level cloud: 6%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
5%
0.00 In
18:00

WSW
WSW

8 / 10 mph 62 / 62°F 80% 1010 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 4%
Most Significant Cloud Type: medium
16%
0.02 In
Sun 30
Sep
00:00

W
W

12 / 19 mph 56 / 53°F 83% 1020 mb
Low level cloud: 59%
Mid level cloud: 53%
High level cloud: 0%
Most Significant Cloud Type: low
77%
0.01 In
06:00

SSW
SSW

21 / 31 mph 53 / 47°F 84% 1001 mb
Low level cloud: 39%
Mid level cloud: 44%
High level cloud: 55%
Most Significant Cloud Type: low
61%
0.01 In
12:00

WSW
WSW

11 / 14 mph 57 / 54°F 82% 1015 mb
Low level cloud: 74%
Mid level cloud: 46%
High level cloud: 1%
Most Significant Cloud Type: low
90%
0.02 In
18:00

W
W

24 / 35 mph 53 / 46°F 68% 1001 mb
Low level cloud: 16%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: low
22%
0.05 In
Mon 01
Oct
00:00

W
W

20 / 28 mph 45 / 37°F 69% 1007 mb
Low level cloud: 0%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: medium
28%
0.02 In
06:00

WSW
WSW

18 / 26 mph 46 / 38°F 68% 1003 mb
Low level cloud: 0%
Mid level cloud: 34%
High level cloud: 0%
Most Significant Cloud Type: medium
33%
0.00 In
12:00

NW
NW

23 / 26 mph 52 / 46°F 53% 1012 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: medium
16%
0.00 In
18:00

WSW
WSW

32 / 44 mph 48 / 39°F 66% 996 mb
Low level cloud: 13%
Mid level cloud: 26%
High level cloud: 36%
Most Significant Cloud Type: low
26%
0.09 In
Tue 02
Oct
00:00

WNW
WNW

14 / 23 mph 39 / 31°F 70% 1017 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 3%
Most Significant Cloud Type: medium
2%
0.01 In
06:00

WSW
WSW

24 / 39 mph 44 / 35°F 76% 999 mb
Low level cloud: 41%
Mid level cloud: 46%
High level cloud: 86%
Most Significant Cloud Type: low
67%
0.01 In
12:00

WSW
WSW

5 / 6 mph 50 / 49°F 63% 1011 mb
Low level cloud: 40%
Mid level cloud: 47%
High level cloud: 51%
Most Significant Cloud Type: low
62%
0.01 In
18:00

WSW
WSW

13 / 15 mph 49 / 44°F 76% 1001 mb
Low level cloud: 12%
Mid level cloud: 46%
High level cloud: 32%
Most Significant Cloud Type: medium
81%
0.00 In
Wed 03
Oct
00:00

N
N

8 / 13 mph 42 / 37°F 75% 1009 mb
Low level cloud: 11%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: low
16%
0.09 In
06:00

W
W

7 / 12 mph 41 / 36°F 88% 1005 mb
Low level cloud: 1%
Mid level cloud: 45%
High level cloud: 32%
Most Significant Cloud Type: medium
49%
0.00 In
12:00

WNW
WNW

13 / 15 mph 48 / 43°F 55% 1018 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 9%
Most Significant Cloud Type: medium
2%
0.00 In
18:00

N
N

7 / 11 mph 50 / 47°F 83% 1010 mb
Low level cloud: 10%
Mid level cloud: 13%
High level cloud: 2%
Most Significant Cloud Type: low
14%
0.07 In
Thu 04
Oct
00:00

SW
SW

21 / 32 mph 48 / 41°F 85% 1010 mb
Low level cloud: 64%
Mid level cloud: 51%
High level cloud: 52%
Most Significant Cloud Type: low
88%
0.04 In
06:00

N
N

8 / 15 mph 43 / 38°F 91% 1013 mb
Low level cloud: 27%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
41%
0.00 In
12:00

WSW
WSW

24 / 35 mph 58 / 53°F 83% 995 mb
Low level cloud: 51%
Mid level cloud: 44%
High level cloud: 80%
Most Significant Cloud Type: low
76%
0.10 In
18:00

NNE
NNE

16 / 25 mph 45 / 38°F 80% 1018 mb
Low level cloud: 46%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: low
53%
0.09 In
Fri 05
Oct
00:00

WNW
WNW

21 / 31 mph 43 / 34°F 64% 998 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.02 In
06:00

NNW
NNW

11 / 19 mph 39 / 32°F 81% 1023 mb
Low level cloud: 3%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
3%
0.01 In
12:00

NW
NW

13 / 15 mph 48 / 43°F 51% 1012 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 3%
Most Significant Cloud Type: medium
5%
0.00 In
18:00

NW
NW

7 / 9 mph 46 / 42°F 69% 1021 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 14%
Most Significant Cloud Type: medium
3%
0.00 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