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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 3°C, with a high for the two weeks of 7°C expected on the morning of Thursday 27th. The average minimum temperature will be -6°C, dipping to its lowest on the morning of Saturday 1st at -11°C. The coming 14 days will have some days seeing a little precipitation and some days with rain or snow. The indicators are that Thursday 27th will have the most precipitation with an accumulation of around 5.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sun 23
Feb		01:00

SSW
SSW

 4 / 9 mph 20 / 13°F 93% 1019 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SSW
SSW

 3 / 6 mph 21 / 18°F 95% 1018 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SW
SW

 2 / 5 mph 22 / 20°F 95% 1018 mb
Low level cloud: 12%
Mid level cloud: 90%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WNW
WNW

 9 / 10 mph 34 / 26°F 79% 1019 mb
Low level cloud: 66%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
71%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WNW
WNW

 9 / 11 mph 36 / 29°F 82% 1018 mb
Low level cloud: 73%
Mid level cloud: 14%
High level cloud: 12%
Most Significant Cloud Type: low
79%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WNW
WNW

 6 / 8 mph 36 / 30°F 85% 1017 mb
Low level cloud: 36%
Mid level cloud: 20%
High level cloud: 70%
Most Significant Cloud Type: low
51%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

W
W

 1 / 3 mph 26 / 26°F 96% 1019 mb
Low level cloud: 3%
Mid level cloud: 44%
High level cloud: 92%
Most Significant Cloud Type: medium
56%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NW
NW

 0 / 0 mph 23 / 23°F 97% 1020 mb
Low level cloud: 1%
Mid level cloud: 56%
High level cloud: 100%
Most Significant Cloud Type: medium
61%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 24
Feb		19:00

S
S

 10 / 17 mph 34 / 26°F 82% 1014 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 100%
Most Significant Cloud Type: medium
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SSW
SSW

 10 / 17 mph 34 / 26°F 81% 1013 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: medium
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 25
Feb		01:00

SSW
SSW

 9 / 16 mph 35 / 28°F 86% 1012 mb
Low level cloud: 0%
Mid level cloud: 64%
High level cloud: 100%
Most Significant Cloud Type: medium
67%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SSW
SSW

 6 / 11 mph 33 / 28°F 94% 1010 mb
Low level cloud: 13%
Mid level cloud: 58%
High level cloud: 100%
Most Significant Cloud Type: medium
98%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

S
S

 5 / 9 mph 34 / 29°F 96% 1010 mb
Low level cloud: 19%
Mid level cloud: 51%
High level cloud: 51%
Most Significant Cloud Type: low
42%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

S
S

 5 / 7 mph 39 / 35°F 92% 1009 mb
Low level cloud: 17%
Mid level cloud: 65%
High level cloud: 95%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SSW
SSW

 5 / 6 mph 43 / 41°F 86% 1007 mb
Low level cloud: 5%
Mid level cloud: 88%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SSW
SSW

 4 / 7 mph 42 / 39°F 93% 1005 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
19:00

SSW
SSW

 4 / 8 mph 36 / 33°F 97% 1005 mb
Low level cloud: 94%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

WNW
WNW

 6 / 11 mph 36 / 31°F 97% 1005 mb
Low level cloud: 91%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: low
97%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 26
Feb		01:00

WNW
WNW

 9 / 13 mph 36 / 30°F 91% 1005 mb
Low level cloud: 98%
Mid level cloud: 11%
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

NW
NW

 10 / 15 mph 36 / 29°F 88% 1006 mb
Low level cloud: 96%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
98%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WNW
WNW

 10 / 15 mph 36 / 28°F 85% 1008 mb
Low level cloud: 60%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
62%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WNW
WNW

 11 / 12 mph 40 / 33°F 79% 1010 mb
Low level cloud: 70%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
71%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NW
NW

 10 / 12 mph 43 / 37°F 71% 1011 mb
Low level cloud: 50%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WNW
WNW

 7 / 9 mph 42 / 37°F 78% 1012 mb
Low level cloud: 2%
Mid level cloud: 8%
High level cloud: 11%
Most Significant Cloud Type: medium
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NNW
NNW

 3 / 6 mph 31 / 28°F 93% 1015 mb
Low level cloud: 2%
Mid level cloud: 46%
High level cloud: 15%
Most Significant Cloud Type: medium
52%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

S
S

 2 / 4 mph 29 / 28°F 94% 1015 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 17%
Most Significant Cloud Type: medium
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 27
Feb		01:00

SSE
SSE

 3 / 6 mph 32 / 29°F 92% 1014 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 62%
Most Significant Cloud Type: medium
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SE
SE

 3 / 7 mph 32 / 29°F 91% 1012 mb
Low level cloud: 96%
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
07:00

S
S

 10 / 16 mph 40 / 33°F 94% 1008 mb
Low level cloud: 96%
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
10:00

SSW
SSW

 13 / 20 mph 45 / 39°F 91% 1004 mb
Low level cloud: 97%
Mid level cloud: 73%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SSW
SSW

 9 / 13 mph 44 / 39°F 96% 1003 mb
Low level cloud: 100%
Mid level cloud: 81%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

S
S

 7 / 11 mph 44 / 40°F 98% 1001 mb
Low level cloud: 100%
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
19:00

S
S

 5 / 10 mph 42 / 39°F 99% 999 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 81%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
22:00

S
S

 2 / 4 mph 41 / 41°F 100% 997 mb
Low level cloud: 94%
Mid level cloud: 94%
High level cloud: 73%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Fri 28
Feb		01:00

SW
SW

 3 / 5 mph 40 / 39°F 99% 995 mb
Low level cloud: 93%
Mid level cloud: 88%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
04:00

WNW
WNW

 8 / 11 mph 38 / 32°F 97% 994 mb
Low level cloud: 100%
Mid level cloud: 57%
High level cloud: 68%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NW
NW

 12 / 17 mph 33 / 24°F 84% 994 mb
Low level cloud: 95%
Mid level cloud: 17%
High level cloud: 5%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WNW
WNW

 14 / 16 mph 38 / 29°F 73% 996 mb
Low level cloud: 29%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WNW
WNW

 18 / 20 mph 31 / 20°F 64% 999 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

WNW
WNW

 17 / 19 mph 24 / 11°F 62% 1004 mb
Low level cloud: 3%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: low
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WNW
WNW

 14 / 18 mph 16 / 2°F 62% 1010 mb
Low level cloud: 1%
Mid level cloud: 11%
High level cloud: 59%
Most Significant Cloud Type: medium
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NW
NW

 11 / 13 mph 14 / 0°F 57% 1014 mb
Low level cloud: 0%
Mid level cloud: 58%
High level cloud: 87%
Most Significant Cloud Type: medium
61%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 01
Mar		01:00

NW
NW

 9 / 10 mph 13 / 2°F 45% 1018 mb
Low level cloud: 0%
Mid level cloud: 99%
High level cloud: 12%
Most Significant Cloud Type: medium
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NNW
NNW

 4 / 5 mph 14 / 7°F 41% 1018 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 32%
Most Significant Cloud Type: medium
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NNE
NNE

 3 / 4 mph 15 / 10°F 41% 1019 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 32%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

ENE
ENE

 2 / 2 mph 20 / 18°F 55% 1020 mb
Low level cloud: 78%
Mid level cloud: 64%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

ENE
ENE

 6 / 7 mph 23 / 16°F 75% 1018 mb
Low level cloud: 90%
Mid level cloud: 55%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

ENE
ENE

 8 / 9 mph 24 / 15°F 82% 1017 mb
Low level cloud: 76%
Mid level cloud: 53%
High level cloud: 0%
Most Significant Cloud Type: low
94%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

ENE
ENE

 6 / 8 mph 21 / 13°F 86% 1019 mb
Low level cloud: 68%
Mid level cloud: 92%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NNE
NNE

 5 / 6 mph 20 / 13°F 87% 1020 mb
Low level cloud: 58%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
73%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sun 02
Mar		01:00

SSW
SSW

 11 / 17 mph 39 / 31°F 90% 1008 mb
Low level cloud: 99%
Mid level cloud: 97%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
07:00

W
W

 12 / 20 mph 33 / 24°F 79% 1005 mb
Low level cloud: 6%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
6%
0.0 In
13:00

WNW
WNW

 15 / 19 mph 31 / 21°F 51% 1009 mb
Low level cloud: 79%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
83%
0.0 In
19:00

WNW
WNW

 14 / 19 mph 23 / 10°F 62% 1015 mb
Low level cloud: 9%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
11%
0.0 In
Mon 03
Mar		01:00

NW
NW

 10 / 14 mph 18 / 6°F 66% 1020 mb
Low level cloud: 24%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
24%
0.0 In
07:00

NW
NW

 9 / 12 mph 13 / 1°F 53% 1020 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
0.0 In
13:00

WNW
WNW

 10 / 12 mph 31 / 22°F 34% 1018 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: medium
8%
0.0 In
19:00

NW
NW

 2 / 3 mph 28 / 26°F 71% 1023 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 19%
Most Significant Cloud Type: high
18%
0.0 In
Tue 04
Mar		01:00

SW
SW

 10 / 20 mph 32 / 23°F 90% 1009 mb
Low level cloud: 99%
Mid level cloud: 32%
High level cloud: 31%
Most Significant Cloud Type: low
100%
0.0 In
07:00

SSW
SSW

 7 / 10 mph 27 / 19°F 55% 1018 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: medium
50%
0.0 In
13:00

NW
NW

 11 / 14 mph 37 / 30°F 44% 1012 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 43%
Most Significant Cloud Type: medium
5%
0.0 In
19:00

SW
SW

 4 / 9 mph 34 / 30°F 74% 1013 mb
Low level cloud: 39%
Mid level cloud: 96%
High level cloud: 100%
Most Significant Cloud Type: low
84%
0.0 In
Wed 05
Mar		01:00

NE
NE

 3 / 4 mph 28 / 25°F 60% 1021 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 100%
Most Significant Cloud Type: medium
23%
0.0 In
07:00

S
S

 4 / 6 mph 36 / 33°F 94% 1010 mb
Low level cloud: 14%
Mid level cloud: 45%
High level cloud: 3%
Most Significant Cloud Type: medium
84%
0.0 In
13:00

S
S

 6 / 7 mph 32 / 27°F 82% 1017 mb
Low level cloud: 81%
Mid level cloud: 99%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
19:00

E
E

 1 / 2 mph 40 / 40°F 94% 1010 mb
Low level cloud: 96%
Mid level cloud: 99%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
Thu 06
Mar		01:00

WNW
WNW

 1 / 1 mph 37 / 37°F 100% 998 mb
Low level cloud: 100%
Mid level cloud: 44%
High level cloud: 51%
Most Significant Cloud Type: low
100%
0.7 In
07:00

E
E

 5 / 8 mph 37 / 33°F 98% 1000 mb
Low level cloud: 100%
Mid level cloud: 76%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.7 In
13:00

SW
SW

 9 / 16 mph 46 / 41°F 100% 981 mb
Low level cloud: 98%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.4 In
19:00

WNW
WNW

 12 / 17 mph 41 / 34°F 96% 982 mb
Low level cloud: 95%
Mid level cloud: 97%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.8 In
Fri 07
Mar		01:00

WNW
WNW

 15 / 22 mph 24 / 11°F 75% 997 mb
Low level cloud: 65%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
66%
0.1 In
07:00

WNW
WNW

 15 / 20 mph 23 / 10°F 61% 1007 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.1 In
13:00

WNW
WNW

 17 / 25 mph 21 / 7°F 47% 1005 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
0.0 In
19:00

W
W

 10 / 17 mph 35 / 27°F 67% 1011 mb
Low level cloud: 26%
Mid level cloud: 75%
High level cloud: 11%
Most Significant Cloud Type: medium
100%
0.0 In
Sat 08
Mar		01:00

WNW
WNW

 10 / 14 mph 13 / 0°F 69% 1010 mb
Low level cloud: 57%
Mid level cloud: 60%
High level cloud: 0%
Most Significant Cloud Type: low
77%
0.0 In
07:00

W
W

 5 / 7 mph 31 / 26°F 81% 1011 mb
Low level cloud: 77%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: low
83%
0.0 In
13:00

WNW
WNW

 13 / 19 mph 21 / 8°F 45% 1016 mb
Low level cloud: 84%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
86%
0.0 In
19:00

NW
NW

 9 / 14 mph 26 / 17°F 66% 1016 mb
Low level cloud: 15%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: low
25%
0.0 In
Sun 09
Mar		01:00

E
E

 2 / 2 mph 20 / 20°F 66% 1018 mb
Low level cloud: 7%
Mid level cloud: 100%
High level cloud: 92%
Most Significant Cloud Type: medium
100%
0.0 In
07:00

WNW
WNW

 9 / 12 mph 19 / 8°F 52% 1024 mb
Low level cloud: 15%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
14%
0.0 In
13:00

NNE
NNE

 12 / 17 mph 22 / 10°F 83% 1013 mb
Low level cloud: 88%
Mid level cloud: 58%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.2 In
19:00

NNE
NNE

 5 / 7 mph 25 / 19°F 58% 1026 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
0.0 In
Mon 10
Mar		01:00

NW
NW

 4 / 7 mph 15 / 8°F 91% 1022 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
07:00

NE
NE

 7 / 10 mph 20 / 11°F 76% 1024 mb
Low level cloud: 44%
Mid level cloud: 76%
High level cloud: 100%
Most Significant Cloud Type: low
82%
0.0 In
13:00

W
W

 2 / 4 mph 37 / 35°F 55% 1030 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

 5 / 7 mph 27 / 21°F 89% 1023 mb
Low level cloud: 86%
Mid level cloud: 75%
High level cloud: 27%
Most Significant Cloud Type: low
100%
0.2 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