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Wilbraham 14 Day Long Range Forecast

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

Massachusetts, United States Of America

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

The outlook for Wilbraham in the two weeks ahead shows the average daytime maximum temperature will be around 4°C, with a high for the two weeks of 13°C expected on the afternoon of Friday 19th. The mean minimum temperature will be -3°C, dipping to its lowest on the morning of Thursday 25th at -8°C. The fortnight ahead will have some days seeing a little precipitation and some days with rain or snow. Current predictions suggest Friday 19th will have the most precipitation with an accumulation of around 24.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Thu 18
Dec		16:00

SSE
SSE

 6 / 10 mph 39 / 34°F 89% 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
19:00

SSE
SSE

 6 / 13 mph 35 / 29°F 94% 1023 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
22:00

S
S

 5 / 10 mph 36 / 32°F 97% 1019 mb
Low level cloud: 79%
Mid level cloud: 69%
High level cloud: 98%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 19
Dec		01:00

SSE
SSE

 6 / 12 mph 41 / 37°F 98% 1015 mb
Low level cloud: 75%
Mid level cloud: 44%
High level cloud: 77%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

S
S

 11 / 21 mph 50 / 45°F 97% 1010 mb
Low level cloud: 100%
Mid level cloud: 43%
High level cloud: 69%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

S
S

 17 / 29 mph 54 / 49°F 90% 1004 mb
Low level cloud: 46%
Mid level cloud: 50%
High level cloud: 100%
Most Significant Cloud Type: low
75%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

S
S

 23 / 34 mph 56 / 51°F 92% 996 mb
Low level cloud: 100%
Mid level cloud: 95%
High level cloud: 42%
Most Significant Cloud Type: low
100%
Expect 0.5 In of precipitation over the past 3 hours.
0.5 In
13:00

SSW
SSW

 18 / 27 mph 56 / 51°F 95% 988 mb
Low level cloud: 100%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
16:00

W
W

 11 / 16 mph 41 / 35°F 89% 993 mb
Low level cloud: 92%
Mid level cloud: 51%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
19:00

W
W

 14 / 19 mph 34 / 25°F 90% 997 mb
Low level cloud: 68%
Mid level cloud: 63%
High level cloud: 0%
Most Significant Cloud Type: low
90%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

WSW
WSW

 14 / 22 mph 28 / 17°F 71% 1003 mb
Low level cloud: 58%
Mid level cloud: 32%
High level cloud: 0%
Most Significant Cloud Type: low
68%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 20
Dec		01:00

W
W

 14 / 21 mph 27 / 15°F 67% 1007 mb
Low level cloud: 76%
Mid level cloud: 32%
High level cloud: 0%
Most Significant Cloud Type: low
86%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

WNW
WNW

 16 / 23 mph 27 / 15°F 67% 1012 mb
Low level cloud: 52%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
52%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WNW
WNW

 14 / 20 mph 26 / 15°F 64% 1016 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 3%
Most Significant Cloud Type: high
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WNW
WNW

 10 / 11 mph 31 / 22°F 51% 1020 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
13:00

W
W

 8 / 9 mph 37 / 31°F 44% 1019 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 10%
Most Significant Cloud Type: high
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SSW
SSW

 4 / 7 mph 34 / 30°F 58% 1019 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
19:00

S
S

 7 / 12 mph 32 / 25°F 66% 1019 mb
Low level cloud: 0%
Mid level cloud: 31%
High level cloud: 100%
Most Significant Cloud Type: medium
35%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

S
S

 11 / 16 mph 33 / 25°F 62% 1016 mb
Low level cloud: 0%
Mid level cloud: 78%
High level cloud: 100%
Most Significant Cloud Type: medium
82%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 21
Dec		01:00

SSW
SSW

 12 / 19 mph 35 / 26°F 61% 1014 mb
Low level cloud: 0%
Mid level cloud: 98%
High level cloud: 96%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SSW
SSW

 13 / 19 mph 36 / 28°F 65% 1011 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 8%
Most Significant Cloud Type: medium
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SW
SW

 10 / 15 mph 34 / 27°F 71% 1010 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
10:00

SW
SW

 10 / 11 mph 40 / 34°F 66% 1010 mb
Low level cloud: 2%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WNW
WNW

 13 / 14 mph 40 / 32°F 62% 1010 mb
Low level cloud: 80%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
95%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WNW
WNW

 15 / 21 mph 31 / 20°F 56% 1014 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WNW
WNW

 12 / 17 mph 27 / 17°F 60% 1017 mb
Low level cloud: 5%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

WNW
WNW

 13 / 19 mph 26 / 15°F 66% 1019 mb
Low level cloud: 40%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
41%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 22
Dec		01:00

WNW
WNW

 14 / 20 mph 26 / 14°F 60% 1021 mb
Low level cloud: 12%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NW
NW

 13 / 18 mph 22 / 10°F 58% 1024 mb
Low level cloud: 35%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NW
NW

 13 / 17 mph 22 / 9°F 55% 1028 mb
Low level cloud: 25%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NW
NW

 14 / 16 mph 25 / 13°F 43% 1031 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
13:00

NW
NW

 13 / 15 mph 28 / 18°F 35% 1031 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
16:00

NW
NW

 9 / 11 mph 28 / 19°F 45% 1034 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
19:00

WNW
WNW

 5 / 6 mph 26 / 20°F 54% 1034 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 2%
Most Significant Cloud Type: high
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SW
SW

 3 / 5 mph 22 / 18°F 60% 1034 mb
Low level cloud: 0%
Mid level cloud: 30%
High level cloud: 59%
Most Significant Cloud Type: medium
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 23
Dec		01:00

SW
SW

 3 / 5 mph 22 / 18°F 58% 1033 mb
Low level cloud: 0%
Mid level cloud: 26%
High level cloud: 6%
Most Significant Cloud Type: medium
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SSW
SSW

 4 / 6 mph 23 / 18°F 52% 1031 mb
Low level cloud: 0%
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
07:00

SSW
SSW

 8 / 12 mph 26 / 18°F 50% 1028 mb
Low level cloud: 0%
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
10:00

SSW
SSW

 12 / 15 mph 32 / 22°F 48% 1024 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: medium
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SW
SW

 15 / 18 mph 30 / 20°F 91% 1019 mb
Low level cloud: 81%
Mid level cloud: 51%
High level cloud: 0%
Most Significant Cloud Type: low
98%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SW
SW

 11 / 17 mph 31 / 22°F 79% 1016 mb
Low level cloud: 78%
Mid level cloud: 26%
High level cloud: 0%
Most Significant Cloud Type: low
86%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WSW
WSW

 9 / 15 mph 30 / 22°F 86% 1016 mb
Low level cloud: 81%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
82%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

WNW
WNW

 12 / 19 mph 35 / 27°F 71% 1016 mb
Low level cloud: 61%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
62%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 24
Dec		01:00

WNW
WNW

 12 / 19 mph 35 / 27°F 70% 1016 mb
Low level cloud: 100%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

WNW
WNW

 13 / 20 mph 33 / 24°F 70% 1018 mb
Low level cloud: 86%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
86%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NW
NW

 14 / 21 mph 25 / 13°F 58% 1022 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
10:00

NW
NW

 13 / 15 mph 26 / 15°F 46% 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
13:00

NNW
NNW

 13 / 15 mph 30 / 20°F 37% 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
16:00

NW
NW

 7 / 9 mph 29 / 21°F 47% 1028 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
19:00

WNW
WNW

 2 / 3 mph 26 / 23°F 60% 1031 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
22:00

W
W

 1 / 2 mph 21 / 21°F 65% 1032 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 2%
Most Significant Cloud Type: high
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Thu 25
Dec		01:00

WNW
WNW

 4 / 6 mph 27 / 22°F 58% 1020 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 10%
Most Significant Cloud Type: high
10%
0.0 In
07:00

E
E

 4 / 6 mph 25 / 20°F 42% 1021 mb
Low level cloud: 0%
Mid level cloud: 72%
High level cloud: 100%
Most Significant Cloud Type: medium
76%
0.0 In
13:00

E
E

 2 / 2 mph 30 / 30°F 83% 1012 mb
Low level cloud: 82%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
19:00

N
N

 4 / 5 mph 30 / 27°F 80% 1022 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 2%
Most Significant Cloud Type: high
2%
0.0 In
Fri 26
Dec		01:00

N
N

 4 / 5 mph 32 / 29°F 91% 1015 mb
Low level cloud: 11%
Mid level cloud: 100%
High level cloud: 85%
Most Significant Cloud Type: medium
100%
0.0 In
07:00

E
E

 5 / 7 mph 29 / 24°F 79% 1014 mb
Low level cloud: 79%
Mid level cloud: 87%
High level cloud: 98%
Most Significant Cloud Type: low
100%
0.0 In
13:00

ENE
ENE

 2 / 4 mph 35 / 33°F 99% 1008 mb
Low level cloud: 100%
Mid level cloud: 97%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
19:00

WNW
WNW

 11 / 18 mph 41 / 34°F 89% 1011 mb
Low level cloud: 98%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
98%
0.0 In
Sat 27
Dec		01:00

WNW
WNW

 15 / 23 mph 39 / 30°F 86% 1005 mb
Low level cloud: 100%
Mid level cloud: 1%
High level cloud: 3%
Most Significant Cloud Type: low
100%
0.1 In
07:00

N
N

 3 / 4 mph 33 / 31°F 93% 1020 mb
Low level cloud: 31%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: low
42%
0.0 In
13:00

N
N

 9 / 13 mph 34 / 27°F 58% 1021 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
19:00

E
E

 1 / 1 mph 35 / 35°F 93% 1021 mb
Low level cloud: 23%
Mid level cloud: 5%
High level cloud: 99%
Most Significant Cloud Type: low
36%
0.0 In
Sun 28
Dec		01:00

NNW
NNW

 3 / 4 mph 29 / 25°F 77% 1030 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
07:00

NNE
NNE

 0 / 1 mph 33 / 33°F 92% 1022 mb
Low level cloud: 9%
Mid level cloud: 30%
High level cloud: 86%
Most Significant Cloud Type: medium
58%
0.0 In
13:00

WNW
WNW

 3 / 4 mph 36 / 34°F 47% 1029 mb
Low level cloud: 0%
Mid level cloud: 32%
High level cloud: 15%
Most Significant Cloud Type: medium
32%
0.0 In
19:00

SE
SE

 2 / 3 mph 39 / 39°F 92% 1018 mb
Low level cloud: 100%
Mid level cloud: 86%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
Mon 29
Dec		01:00

NW
NW

 2 / 2 mph 32 / 32°F 88% 1023 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 1%
Most Significant Cloud Type: medium
6%
0.0 In
07:00

N
N

 3 / 6 mph 34 / 31°F 98% 1016 mb
Low level cloud: 75%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
77%
0.1 In
13:00

NNW
NNW

 4 / 6 mph 41 / 38°F 47% 1019 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
0.0 In
19:00

NNW
NNW

 10 / 16 mph 30 / 22°F 76% 1020 mb
Low level cloud: 23%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
23%
0.0 In
Tue 30
Dec		01:00

W
W

 4 / 6 mph 28 / 24°F 80% 1016 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
0.0 In
07:00

NNW
NNW

 6 / 8 mph 27 / 21°F 76% 1028 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 15%
Most Significant Cloud Type: high
14%
0.0 In
13:00

NW
NW

 11 / 16 mph 32 / 23°F 46% 1016 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 22%
Most Significant Cloud Type: high
21%
0.0 In
19:00

NNE
NNE

 3 / 5 mph 33 / 29°F 69% 1033 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
Wed 31
Dec		01:00

NW
NW

 4 / 6 mph 28 / 24°F 66% 1021 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 43%
Most Significant Cloud Type: medium
11%
0.0 In
07:00

S
S

 1 / 2 mph 29 / 29°F 70% 1035 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 15%
Most Significant Cloud Type: high
14%
0.0 In
13:00

N
N

 7 / 10 mph 29 / 21°F 41% 1022 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 92%
Most Significant Cloud Type: high
91%
0.0 In
19:00

SSW
SSW

 5 / 10 mph 32 / 26°F 66% 1032 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Thu 01
Jan		01:00

NNE
NNE

 6 / 8 mph 24 / 17°F 53% 1021 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 39%
Most Significant Cloud Type: medium
100%
0.0 In
07:00

S
S

 4 / 8 mph 32 / 28°F 71% 1028 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 11%
Most Significant Cloud Type: medium
7%
0.0 In
13:00

N
N

 10 / 13 mph 29 / 20°F 37% 1018 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: high
1%
0.0 In
19:00

SSW
SSW

 5 / 10 mph 37 / 33°F 87% 1025 mb
Low level cloud: 0%
Mid level cloud: 66%
High level cloud: 0%
Most Significant Cloud Type: medium
65%
0.0 In
Fri 02
Jan		01:00

NNW
NNW

 5 / 7 mph 22 / 15°F 65% 1015 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
07:00

SSW
SSW

 5 / 10 mph 37 / 33°F 95% 1022 mb
Low level cloud: 7%
Mid level cloud: 82%
High level cloud: 10%
Most Significant Cloud Type: medium
100%
0.0 In
13:00

NNW
NNW

 11 / 15 mph 34 / 26°F 37% 1010 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 2%
Most Significant Cloud Type: medium
5%
0.0 In
19:00

SSW
SSW

 8 / 14 mph 48 / 44°F 93% 1017 mb
Low level cloud: 31%
Mid level cloud: 54%
High level cloud: 21%
Most Significant Cloud Type: low
52%
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