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Bedford 14 Day Long Range Forecast

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

Bedfordshire, United Kingdom

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

The outlook for Bedford in the two weeks ahead shows the average daytime maximum temperature will be around 20°C, with a high for the two weeks of 24°C expected on the afternoon of Sunday 7th. The average minimum temperature will be 13°C, dipping to its lowest on the morning of Thursday 4th at 12°C. Expect the following 14 days ahead to have some days seeing a little precipitation and some days with rain. The current forecast indicates Friday 5th will have the most precipitation with an accumulation of around 12.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Fri 29
Aug		18:00

SW
SW

 6 / 9 mph 69 / 67°F 56% 996 mb
Low level cloud: 0%
Mid level cloud: 31%
High level cloud: 0%
Most Significant Cloud Type: medium
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

W
W

 9 / 15 mph 62 / 62°F 66% 999 mb
Low level cloud: 3%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: medium
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 30
Aug		00:00

WSW
WSW

 8 / 15 mph 56 / 55°F 78% 1001 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 0%
Most Significant Cloud Type: medium
21%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SW
SW

 8 / 14 mph 54 / 52°F 89% 1002 mb
Low level cloud: 4%
Mid level cloud: 15%
High level cloud: 11%
Most Significant Cloud Type: medium
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SW
SW

 8 / 14 mph 54 / 51°F 91% 1002 mb
Low level cloud: 14%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SW
SW

 13 / 16 mph 65 / 64°F 62% 1003 mb
Low level cloud: 40%
Mid level cloud: 9%
High level cloud: 1%
Most Significant Cloud Type: low
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SW
SW

 18 / 21 mph 72 / 76°F 44% 1002 mb
Low level cloud: 13%
Mid level cloud: 43%
High level cloud: 8%
Most Significant Cloud Type: medium
80%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSW
SSW

 20 / 24 mph 70 / 70°F 55% 1001 mb
Low level cloud: 93%
Mid level cloud: 57%
High level cloud: 9%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

S
S

 19 / 28 mph 62 / 62°F 84% 1000 mb
Low level cloud: 95%
Mid level cloud: 75%
High level cloud: 17%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSW
SSW

 19 / 30 mph 63 / 64°F 87% 1000 mb
Low level cloud: 99%
Mid level cloud: 61%
High level cloud: 3%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 31
Aug		00:00

WSW
WSW

 14 / 20 mph 62 / 62°F 81% 1000 mb
Low level cloud: 78%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
79%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SW
SW

 11 / 17 mph 56 / 53°F 94% 1002 mb
Low level cloud: 49%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
50%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SSW
SSW

 12 / 18 mph 54 / 51°F 89% 1002 mb
Low level cloud: 22%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSW
SSW

 17 / 20 mph 64 / 63°F 64% 1003 mb
Low level cloud: 42%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSW
SSW

 18 / 20 mph 70 / 70°F 45% 1002 mb
Low level cloud: 14%
Mid level cloud: 95%
High level cloud: 1%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSW
SSW

 18 / 25 mph 68 / 67°F 51% 1002 mb
Low level cloud: 6%
Mid level cloud: 46%
High level cloud: 76%
Most Significant Cloud Type: medium
66%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSW
SSW

 17 / 25 mph 66 / 65°F 53% 1001 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 0%
Most Significant Cloud Type: medium
21%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

S
S

 15 / 23 mph 59 / 59°F 73% 1001 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 10%
Most Significant Cloud Type: medium
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 01
Sep		00:00

S
S

 14 / 22 mph 57 / 54°F 82% 1001 mb
Low level cloud: 11%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

S
S

 15 / 24 mph 57 / 53°F 83% 999 mb
Low level cloud: 28%
Mid level cloud: 52%
High level cloud: 37%
Most Significant Cloud Type: low
50%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

S
S

 17 / 25 mph 57 / 54°F 84% 999 mb
Low level cloud: 100%
Mid level cloud: 84%
High level cloud: 97%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSW
SSW

 21 / 26 mph 64 / 63°F 68% 998 mb
Low level cloud: 45%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: low
72%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSW
SSW

 20 / 26 mph 63 / 63°F 71% 998 mb
Low level cloud: 45%
Mid level cloud: 86%
High level cloud: 100%
Most Significant Cloud Type: low
86%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SW
SW

 18 / 25 mph 65 / 64°F 67% 998 mb
Low level cloud: 22%
Mid level cloud: 32%
High level cloud: 12%
Most Significant Cloud Type: low
34%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SW
SW

 16 / 23 mph 61 / 61°F 75% 999 mb
Low level cloud: 4%
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
21:00

SW
SW

 16 / 25 mph 58 / 55°F 84% 1000 mb
Low level cloud: 44%
Mid level cloud: 45%
High level cloud: 89%
Most Significant Cloud Type: low
70%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 02
Sep		00:00

SW
SW

 17 / 26 mph 57 / 54°F 83% 1001 mb
Low level cloud: 97%
Mid level cloud: 68%
High level cloud: 19%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SW
SW

 14 / 22 mph 54 / 50°F 92% 1002 mb
Low level cloud: 56%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
59%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SSW
SSW

 11 / 17 mph 54 / 51°F 91% 1003 mb
Low level cloud: 30%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
35%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SW
SW

 13 / 15 mph 64 / 62°F 65% 1003 mb
Low level cloud: 51%
Mid level cloud: 14%
High level cloud: 7%
Most Significant Cloud Type: low
56%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSW
SSW

 13 / 15 mph 71 / 69°F 43% 1002 mb
Low level cloud: 5%
Mid level cloud: 46%
High level cloud: 83%
Most Significant Cloud Type: medium
62%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSW
SSW

 14 / 18 mph 68 / 67°F 55% 1002 mb
Low level cloud: 19%
Mid level cloud: 42%
High level cloud: 100%
Most Significant Cloud Type: low
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

S
S

 9 / 13 mph 62 / 61°F 80% 1003 mb
Low level cloud: 3%
Mid level cloud: 27%
High level cloud: 72%
Most Significant Cloud Type: medium
38%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSW
SSW

 8 / 13 mph 57 / 55°F 94% 1004 mb
Low level cloud: 17%
Mid level cloud: 20%
High level cloud: 9%
Most Significant Cloud Type: low
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 03
Sep		00:00

SW
SW

 7 / 12 mph 56 / 54°F 88% 1004 mb
Low level cloud: 0%
Mid level cloud: 23%
High level cloud: 100%
Most Significant Cloud Type: medium
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SW
SW

 6 / 11 mph 54 / 52°F 87% 1004 mb
Low level cloud: 2%
Mid level cloud: 68%
High level cloud: 100%
Most Significant Cloud Type: medium
77%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SSW
SSW

 10 / 16 mph 55 / 52°F 86% 1003 mb
Low level cloud: 10%
Mid level cloud: 59%
High level cloud: 100%
Most Significant Cloud Type: medium
90%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

S
S

 13 / 20 mph 57 / 54°F 85% 1002 mb
Low level cloud: 61%
Mid level cloud: 100%
High level cloud: 21%
Most Significant Cloud Type: low
98%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

S
S

 17 / 25 mph 61 / 61°F 78% 999 mb
Low level cloud: 98%
Mid level cloud: 45%
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

SW
SW

 16 / 26 mph 62 / 61°F 65% 998 mb
Low level cloud: 8%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
9%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
18:00

SW
SW

 19 / 30 mph 61 / 60°F 69% 999 mb
Low level cloud: 28%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WSW
WSW

 16 / 26 mph 56 / 53°F 76% 1002 mb
Low level cloud: 4%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 04
Sep		00:00

WSW
WSW

 16 / 25 mph 55 / 51°F 81% 1004 mb
Low level cloud: 21%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
23%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

WSW
WSW

 13 / 22 mph 54 / 50°F 86% 1007 mb
Low level cloud: 27%
Mid level cloud: 8%
High level cloud: 87%
Most Significant Cloud Type: low
40%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SW
SW

 10 / 16 mph 54 / 50°F 87% 1009 mb
Low level cloud: 10%
Mid level cloud: 6%
High level cloud: 100%
Most Significant Cloud Type: medium
38%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WSW
WSW

 12 / 16 mph 61 / 60°F 65% 1010 mb
Low level cloud: 8%
Mid level cloud: 6%
High level cloud: 100%
Most Significant Cloud Type: medium
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SW
SW

 13 / 15 mph 70 / 68°F 48% 1010 mb
Low level cloud: 52%
Mid level cloud: 14%
High level cloud: 22%
Most Significant Cloud Type: low
59%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SW
SW

 13 / 17 mph 70 / 70°F 44% 1010 mb
Low level cloud: 6%
Mid level cloud: 72%
High level cloud: 11%
Most Significant Cloud Type: medium
90%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSW
SSW

 12 / 18 mph 66 / 65°F 64% 1010 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: medium
23%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

S
S

 10 / 14 mph 60 / 60°F 76% 1010 mb
Low level cloud: 0%
Mid level cloud: 48%
High level cloud: 100%
Most Significant Cloud Type: medium
52%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Fri 05
Sep		00:00

WSW
WSW

 10 / 20 mph 52 / 48°F 94% 1005 mb
Low level cloud: 30%
Mid level cloud: 29%
High level cloud: 33%
Most Significant Cloud Type: low
44%
0.0 In
06:00

SSW
SSW

 23 / 48 mph 58 / 54°F 93% 995 mb
Low level cloud: 99%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
12:00

W
W

 13 / 27 mph 57 / 54°F 90% 1006 mb
Low level cloud: 55%
Mid level cloud: 84%
High level cloud: 100%
Most Significant Cloud Type: low
96%
0.0 In
18:00

WNW
WNW

 13 / 27 mph 65 / 65°F 65% 1003 mb
Low level cloud: 8%
Mid level cloud: 44%
High level cloud: 5%
Most Significant Cloud Type: medium
66%
0.0 In
Sat 06
Sep		00:00

SW
SW

 11 / 24 mph 56 / 53°F 80% 1012 mb
Low level cloud: 16%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
18%
0.0 In
06:00

NW
NW

 6 / 11 mph 56 / 55°F 82% 1016 mb
Low level cloud: 0%
Mid level cloud: 26%
High level cloud: 1%
Most Significant Cloud Type: medium
25%
0.0 In
12:00

SW
SW

 6 / 12 mph 63 / 63°F 72% 1012 mb
Low level cloud: 9%
Mid level cloud: 68%
High level cloud: 100%
Most Significant Cloud Type: medium
97%
0.0 In
18:00

SW
SW

 9 / 19 mph 69 / 69°F 52% 1016 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 100%
Most Significant Cloud Type: medium
27%
0.0 In
Sun 07
Sep		00:00

W
W

 5 / 11 mph 58 / 57°F 76% 1015 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
46%
0.0 In
06:00

SSE
SSE

 5 / 11 mph 57 / 56°F 86% 1019 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 5%
Most Significant Cloud Type: medium
4%
0.0 In
12:00

SSW
SSW

 1 / 2 mph 68 / 68°F 48% 1018 mb
Low level cloud: 9%
Mid level cloud: 87%
High level cloud: 9%
Most Significant Cloud Type: medium
100%
0.0 In
18:00

ESE
ESE

 11 / 23 mph 67 / 67°F 55% 1016 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
0.0 In
Mon 08
Sep		00:00

E
E

 1 / 2 mph 65 / 65°F 69% 1020 mb
Low level cloud: 21%
Mid level cloud: 65%
High level cloud: 9%
Most Significant Cloud Type: medium
100%
0.0 In
06:00

SE
SE

 6 / 12 mph 64 / 64°F 92% 1012 mb
Low level cloud: 15%
Mid level cloud: 4%
High level cloud: 32%
Most Significant Cloud Type: low
20%
0.0 In
12:00

ESE
ESE

 2 / 5 mph 75 / 77°F 53% 1023 mb
Low level cloud: 26%
Mid level cloud: 13%
High level cloud: 42%
Most Significant Cloud Type: low
35%
0.0 In
18:00

SSW
SSW

 9 / 18 mph 72 / 76°F 62% 1012 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 100%
Most Significant Cloud Type: medium
11%
0.0 In
Tue 09
Sep		00:00

ESE
ESE

 5 / 11 mph 65 / 65°F 78% 1024 mb
Low level cloud: 29%
Mid level cloud: 24%
High level cloud: 91%
Most Significant Cloud Type: low
47%
0.0 In
06:00

WSW
WSW

 8 / 17 mph 59 / 59°F 95% 1014 mb
Low level cloud: 52%
Mid level cloud: 7%
High level cloud: 70%
Most Significant Cloud Type: low
62%
0.0 In
12:00

ESE
ESE

 11 / 22 mph 74 / 77°F 58% 1023 mb
Low level cloud: 35%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: low
43%
0.0 In
18:00

SSW
SSW

 12 / 26 mph 69 / 69°F 49% 1015 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
46%
0.0 In
Wed 10
Sep		00:00

S
S

 5 / 11 mph 67 / 67°F 92% 1020 mb
Low level cloud: 7%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
9%
0.0 In
06:00

SSW
SSW

 8 / 18 mph 55 / 53°F 94% 1019 mb
Low level cloud: 16%
Mid level cloud: 4%
High level cloud: 16%
Most Significant Cloud Type: low
18%
0.0 In
12:00

SSW
SSW

 17 / 35 mph 77 / 78°F 47% 1017 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: medium
16%
0.0 In
18:00

SSW
SSW

 15 / 31 mph 67 / 67°F 69% 1019 mb
Low level cloud: 63%
Mid level cloud: 19%
High level cloud: 78%
Most Significant Cloud Type: low
79%
0.0 In
Thu 11
Sep		00:00

SW
SW

 13 / 28 mph 59 / 56°F 87% 1015 mb
Low level cloud: 68%
Mid level cloud: 1%
High level cloud: 5%
Most Significant Cloud Type: low
68%
0.0 In
06:00

SW
SW

 14 / 30 mph 64 / 64°F 88% 1019 mb
Low level cloud: 79%
Mid level cloud: 11%
High level cloud: 3%
Most Significant Cloud Type: low
83%
0.1 In
12:00

WNW
WNW

 16 / 34 mph 66 / 66°F 65% 1018 mb
Low level cloud: 92%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
95%
0.0 In
18:00

SW
SW

 9 / 19 mph 70 / 70°F 51% 1023 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 2%
Most Significant Cloud Type: medium
4%
0.0 In
Fri 12
Sep		00:00

WNW
WNW

 6 / 13 mph 57 / 56°F 87% 1023 mb
Low level cloud: 56%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
58%
0.0 In
06:00

W
W

 6 / 12 mph 59 / 58°F 79% 1028 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 46%
Most Significant Cloud Type: medium
16%
0.0 In
12:00

SSE
SSE

 3 / 6 mph 73 / 76°F 52% 1024 mb
Low level cloud: 28%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
28%
0.0 In
18:00

SE
SE

 2 / 4 mph 78 / 79°F 45% 1029 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 16%
Most Significant Cloud Type: medium
14%
0.0 In
Sat 13
Sep		00:00

SSE
SSE

 6 / 13 mph 64 / 64°F 83% 1023 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 8%
Most Significant Cloud Type: high
8%
0.0 In
06:00

SSE
SSE

 6 / 13 mph 61 / 61°F 76% 1029 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 36%
Most Significant Cloud Type: medium
10%
0.0 In
12:00

SSE
SSE

 4 / 9 mph 76 / 78°F 49% 1023 mb
Low level cloud: 3%
Mid level cloud: 4%
High level cloud: 7%
Most Significant Cloud Type: low
5%
0.0 In
18:00

SE
SE

 10 / 21 mph 72 / 72°F 45% 1024 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 6%
Most Significant Cloud Type: medium
2%
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