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Hackleton 14 Day Long Range Forecast

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

Northamptonshire, United Kingdom

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

Reviewing the forecast for Hackleton Over the next 14 days and the average daytime maximum temperature will be around 11°C, with a high for the two weeks of 14°C expected on the afternoon of Thursday 20th. The average minimum temperature will be 2°C, dipping to its lowest on the morning of Sunday 16th at -2°C. Expect the coming 14 days to have some days seeing a little precipitation and some days with rain or snow. The indicators are that Friday 21st will have the most precipitation with an accumulation of around 4.0mm. On the whole winds are likely to be moderate.

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

ENE
ENE

 8 / 11 mph 40 / 34°F 81% 1024 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

NE
NE

 7 / 10 mph 35 / 29°F 92% 1026 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
Sun 16
Mar		00:00

NNE
NNE

 6 / 12 mph 29 / 23°F 93% 1026 mb
Low level cloud: 4%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NNE
NNE

 6 / 13 mph 28 / 21°F 94% 1026 mb
Low level cloud: 7%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NNE
NNE

 6 / 13 mph 28 / 21°F 95% 1026 mb
Low level cloud: 23%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NE
NE

 9 / 11 mph 41 / 35°F 78% 1027 mb
Low level cloud: 25%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NE
NE

 11 / 13 mph 47 / 42°F 65% 1027 mb
Low level cloud: 99%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NE
NE

 10 / 11 mph 47 / 42°F 74% 1026 mb
Low level cloud: 100%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NNE
NNE

 9 / 14 mph 43 / 38°F 92% 1026 mb
Low level cloud: 56%
Mid level cloud: 50%
High level cloud: 4%
Most Significant Cloud Type: low
74%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NNE
NNE

 8 / 17 mph 36 / 30°F 93% 1028 mb
Low level cloud: 49%
Mid level cloud: 4%
High level cloud: 1%
Most Significant Cloud Type: low
50%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 17
Mar		00:00

NE
NE

 8 / 15 mph 38 / 32°F 94% 1029 mb
Low level cloud: 66%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
66%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NE
NE

 9 / 17 mph 35 / 28°F 99% 1029 mb
Low level cloud: 93%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
93%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NE
NE

 10 / 15 mph 38 / 31°F 82% 1029 mb
Low level cloud: 93%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
93%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ENE
ENE

 12 / 15 mph 41 / 34°F 80% 1030 mb
Low level cloud: 99%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

ENE
ENE

 13 / 15 mph 44 / 38°F 73% 1029 mb
Low level cloud: 98%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
98%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

E
E

 13 / 15 mph 46 / 40°F 67% 1028 mb
Low level cloud: 83%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
83%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

E
E

 10 / 18 mph 39 / 32°F 81% 1028 mb
Low level cloud: 36%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
35%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ENE
ENE

 10 / 19 mph 33 / 26°F 93% 1029 mb
Low level cloud: 10%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 18
Mar		00:00

ENE
ENE

 9 / 18 mph 32 / 24°F 93% 1028 mb
Low level cloud: 1%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ENE
ENE

 10 / 21 mph 30 / 21°F 92% 1027 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
06:00

ENE
ENE

 9 / 19 mph 29 / 21°F 91% 1026 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 3%
Most Significant Cloud Type: high
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

E
E

 13 / 15 mph 43 / 35°F 67% 1026 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
12:00

ESE
ESE

 14 / 16 mph 49 / 44°F 53% 1025 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
15:00

E
E

 13 / 15 mph 50 / 45°F 53% 1023 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

ESE
ESE

 10 / 16 mph 42 / 36°F 73% 1024 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 / 16 mph 35 / 29°F 82% 1024 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
Wed 19
Mar		00:00

ENE
ENE

 7 / 15 mph 30 / 23°F 84% 1023 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 6%
Most Significant Cloud Type: high
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ENE
ENE

 6 / 13 mph 29 / 22°F 89% 1023 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 22%
Most Significant Cloud Type: high
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

E
E

 6 / 14 mph 29 / 22°F 91% 1023 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 79%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

E
E

 7 / 8 mph 45 / 41°F 73% 1023 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 100%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

ESE
ESE

 7 / 8 mph 53 / 50°F 66% 1022 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 100%
Most Significant Cloud Type: medium
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

ESE
ESE

 6 / 7 mph 55 / 53°F 65% 1021 mb
Low level cloud: 5%
Mid level cloud: 6%
High level cloud: 100%
Most Significant Cloud Type: medium
23%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

E
E

 5 / 11 mph 46 / 43°F 85% 1020 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 22%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ESE
ESE

 6 / 12 mph 40 / 35°F 92% 1021 mb
Low level cloud: 19%
Mid level cloud: 12%
High level cloud: 7%
Most Significant Cloud Type: low
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 20
Mar		00:00

E
E

 5 / 11 mph 38 / 34°F 93% 1020 mb
Low level cloud: 7%
Mid level cloud: 13%
High level cloud: 4%
Most Significant Cloud Type: low
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

E
E

 6 / 12 mph 36 / 31°F 94% 1019 mb
Low level cloud: 3%
Mid level cloud: 70%
High level cloud: 7%
Most Significant Cloud Type: medium
79%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ENE
ENE

 7 / 14 mph 36 / 30°F 95% 1018 mb
Low level cloud: 10%
Mid level cloud: 100%
High level cloud: 11%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ENE
ENE

 7 / 11 mph 45 / 41°F 88% 1017 mb
Low level cloud: 8%
Mid level cloud: 68%
High level cloud: 0%
Most Significant Cloud Type: medium
91%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

ENE
ENE

 10 / 11 mph 53 / 49°F 80% 1015 mb
Low level cloud: 3%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: medium
52%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

E
E

 12 / 14 mph 57 / 54°F 74% 1013 mb
Low level cloud: 73%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
88%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

E
E

 9 / 15 mph 50 / 46°F 87% 1011 mb
Low level cloud: 1%
Mid level cloud: 25%
High level cloud: 100%
Most Significant Cloud Type: medium
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ENE
ENE

 9 / 19 mph 44 / 40°F 94% 1010 mb
Low level cloud: 21%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: low
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 21
Mar		00:00

NE
NE

 10 / 20 mph 41 / 35°F 96% 1008 mb
Low level cloud: 18%
Mid level cloud: 87%
High level cloud: 13%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NE
NE

 11 / 23 mph 43 / 37°F 89% 1006 mb
Low level cloud: 42%
Mid level cloud: 45%
High level cloud: 12%
Most Significant Cloud Type: low
58%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ENE
ENE

 11 / 17 mph 45 / 39°F 97% 1004 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
09:00

E
E

 12 / 17 mph 48 / 42°F 98% 1003 mb
Low level cloud: 100%
Mid level cloud: 97%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
12:00

SE
SE

 11 / 13 mph 53 / 49°F 91% 1002 mb
Low level cloud: 88%
Mid level cloud: 100%
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

SSE
SSE

 13 / 15 mph 57 / 54°F 78% 1002 mb
Low level cloud: 59%
Mid level cloud: 12%
High level cloud: 48%
Most Significant Cloud Type: low
69%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSE
SSE

 8 / 15 mph 49 / 45°F 91% 1002 mb
Low level cloud: 16%
Mid level cloud: 37%
High level cloud: 11%
Most Significant Cloud Type: low
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSE
SSE

 7 / 15 mph 43 / 39°F 95% 1003 mb
Low level cloud: 24%
Mid level cloud: 45%
High level cloud: 21%
Most Significant Cloud Type: low
42%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sat 22
Mar		00:00

SE
SE

 5 / 9 mph 51 / 49°F 86% 1014 mb
Low level cloud: 37%
Mid level cloud: 65%
High level cloud: 33%
Most Significant Cloud Type: low
64%
0.0 In
06:00

S
S

 12 / 21 mph 48 / 42°F 94% 1002 mb
Low level cloud: 98%
Mid level cloud: 16%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
12:00

SSE
SSE

 17 / 24 mph 50 / 45°F 93% 1001 mb
Low level cloud: 85%
Mid level cloud: 99%
High level cloud: 84%
Most Significant Cloud Type: low
100%
0.0 In
18:00

S
S

 13 / 20 mph 58 / 56°F 87% 1011 mb
Low level cloud: 31%
Mid level cloud: 80%
High level cloud: 100%
Most Significant Cloud Type: low
71%
0.0 In
Sun 23
Mar		00:00

SSE
SSE

 21 / 33 mph 47 / 40°F 89% 998 mb
Low level cloud: 94%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
06:00

SSW
SSW

 6 / 11 mph 39 / 35°F 93% 1001 mb
Low level cloud: 1%
Mid level cloud: 48%
High level cloud: 39%
Most Significant Cloud Type: medium
51%
0.0 In
12:00

S
S

 14 / 27 mph 51 / 47°F 71% 991 mb
Low level cloud: 76%
Mid level cloud: 34%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
18:00

SSE
SSE

 10 / 17 mph 55 / 53°F 89% 1005 mb
Low level cloud: 66%
Mid level cloud: 100%
High level cloud: 83%
Most Significant Cloud Type: low
100%
0.0 In
Mon 24
Mar		00:00

SW
SW

 7 / 14 mph 43 / 38°F 97% 1002 mb
Low level cloud: 36%
Mid level cloud: 45%
High level cloud: 5%
Most Significant Cloud Type: low
53%
0.0 In
06:00

SSE
SSE

 8 / 13 mph 47 / 44°F 96% 1000 mb
Low level cloud: 34%
Mid level cloud: 64%
High level cloud: 100%
Most Significant Cloud Type: low
68%
0.0 In
12:00

WNW
WNW

 9 / 18 mph 55 / 52°F 72% 1003 mb
Low level cloud: 20%
Mid level cloud: 58%
High level cloud: 4%
Most Significant Cloud Type: medium
100%
0.0 In
18:00

S
S

 12 / 21 mph 52 / 47°F 86% 998 mb
Low level cloud: 15%
Mid level cloud: 46%
High level cloud: 6%
Most Significant Cloud Type: medium
89%
0.0 In
Tue 25
Mar		00:00

W
W

 8 / 15 mph 43 / 38°F 91% 1001 mb
Low level cloud: 11%
Mid level cloud: 11%
High level cloud: 8%
Most Significant Cloud Type: low
16%
0.0 In
06:00

S
S

 16 / 29 mph 49 / 43°F 91% 999 mb
Low level cloud: 98%
Mid level cloud: 29%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
12:00

NNW
NNW

 21 / 41 mph 38 / 27°F 97% 1001 mb
Low level cloud: 93%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.2 In
18:00

SSW
SSW

 9 / 16 mph 47 / 42°F 91% 1002 mb
Low level cloud: 56%
Mid level cloud: 21%
High level cloud: 1%
Most Significant Cloud Type: low
63%
0.1 In
Wed 26
Mar		00:00

W
W

 12 / 24 mph 31 / 22°F 88% 1010 mb
Low level cloud: 0%
Mid level cloud: 35%
High level cloud: 80%
Most Significant Cloud Type: medium
38%
0.0 In
06:00

SSW
SSW

 24 / 45 mph 45 / 37°F 86% 999 mb
Low level cloud: 93%
Mid level cloud: 7%
High level cloud: 1%
Most Significant Cloud Type: low
95%
0.0 In
12:00

NW
NW

 16 / 32 mph 41 / 33°F 87% 1006 mb
Low level cloud: 25%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
27%
0.1 In
18:00

WSW
WSW

 16 / 32 mph 46 / 39°F 86% 996 mb
Low level cloud: 19%
Mid level cloud: 43%
High level cloud: 11%
Most Significant Cloud Type: low
35%
0.1 In
Thu 27
Mar		00:00

WNW
WNW

 13 / 27 mph 38 / 30°F 92% 1013 mb
Low level cloud: 40%
Mid level cloud: 23%
High level cloud: 54%
Most Significant Cloud Type: low
54%
0.0 In
06:00

WSW
WSW

 13 / 25 mph 40 / 32°F 94% 996 mb
Low level cloud: 71%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: low
78%
0.4 In
12:00

NNW
NNW

 16 / 32 mph 50 / 44°F 64% 1016 mb
Low level cloud: 88%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
88%
0.0 In
18:00

NW
NW

 13 / 25 mph 43 / 36°F 86% 1000 mb
Low level cloud: 79%
Mid level cloud: 46%
High level cloud: 2%
Most Significant Cloud Type: low
95%
0.0 In
Fri 28
Mar		00:00

WNW
WNW

 6 / 11 mph 39 / 35°F 88% 1023 mb
Low level cloud: 7%
Mid level cloud: 0%
High level cloud: 18%
Most Significant Cloud Type: low
9%
0.0 In
06:00

WNW
WNW

 13 / 25 mph 33 / 24°F 91% 1005 mb
Low level cloud: 22%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: low
36%
0.0 In
12:00

WNW
WNW

 12 / 24 mph 53 / 49°F 73% 1023 mb
Low level cloud: 83%
Mid level cloud: 63%
High level cloud: 31%
Most Significant Cloud Type: low
100%
0.0 In
18:00

NW
NW

 15 / 30 mph 40 / 32°F 64% 1012 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: medium
14%
0.0 In
Sat 29
Mar		00:00

WSW
WSW

 9 / 17 mph 44 / 39°F 90% 1022 mb
Low level cloud: 2%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
06:00

WNW
WNW

 7 / 15 mph 30 / 23°F 85% 1021 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
0.0 In
12:00

SW
SW

 22 / 45 mph 49 / 41°F 93% 1008 mb
Low level cloud: 100%
Mid level cloud: 77%
High level cloud: 88%
Most Significant Cloud Type: low
100%
0.1 In
18:00

NW
NW

 9 / 18 mph 40 / 35°F 68% 1022 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 11%
Most Significant Cloud Type: medium
24%
0.0 In
Sun 30
Mar		00:00

WNW
WNW

 22 / 45 mph 44 / 36°F 89% 995 mb
Low level cloud: 100%
Mid level cloud: 24%
High level cloud: 5%
Most Significant Cloud Type: low
100%
0.3 In
06:00

WNW
WNW

 9 / 17 mph 40 / 35°F 94% 1017 mb
Low level cloud: 42%
Mid level cloud: 32%
High level cloud: 0%
Most Significant Cloud Type: low
52%
0.1 In
12:00

NNW
NNW

 22 / 47 mph 47 / 39°F 70% 1005 mb
Low level cloud: 35%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: low
40%
0.1 In
18:00

ENE
ENE

 2 / 5 mph 46 / 46°F 79% 1015 mb
Low level cloud: 26%
Mid level cloud: 13%
High level cloud: 6%
Most Significant Cloud Type: low
30%
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