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Grenoble 14 Day Long Range Forecast

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

France

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

For Grenoble in the coming two weeks the average daytime maximum temperature will be around 8°C, with a high for the two weeks of 11°C expected on the afternoon of Thursday 15th. The average minimum temperature will be 2°C, dipping to its lowest on the evening of Sunday 11th at -3°C. Expect the following 14 days ahead to have some days seeing a little precipitation and some days with rain or snow. The indicators are that Saturday 17th will have the most precipitation with an accumulation of around 26.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sun 11
Jan		19:00

E
E

 3 / 6 mph 28 / 25°F 92% 1025 mb
Low level cloud: 2%
Mid level cloud: 16%
High level cloud: 17%
Most Significant Cloud Type: medium
21%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

ESE
ESE

 4 / 9 mph 27 / 22°F 91% 1025 mb
Low level cloud: 0%
Mid level cloud: 52%
High level cloud: 33%
Most Significant Cloud Type: medium
53%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 12
Jan		01:00

SSE
SSE

 5 / 10 mph 27 / 21°F 86% 1024 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 84%
Most Significant Cloud Type: medium
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SSE
SSE

 3 / 6 mph 32 / 29°F 76% 1024 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

SSE
SSE

 3 / 5 mph 34 / 32°F 83% 1023 mb
Low level cloud: 50%
Mid level cloud: 82%
High level cloud: 6%
Most Significant Cloud Type: low
78%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SSE
SSE

 4 / 8 mph 37 / 34°F 78% 1023 mb
Low level cloud: 2%
Mid level cloud: 44%
High level cloud: 7%
Most Significant Cloud Type: medium
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

S
S

 5 / 6 mph 46 / 43°F 71% 1021 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 29%
Most Significant Cloud Type: medium
21%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

S
S

 6 / 11 mph 42 / 38°F 81% 1020 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 100%
Most Significant Cloud Type: medium
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

S
S

 8 / 16 mph 36 / 29°F 84% 1020 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 43%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

S
S

 8 / 17 mph 35 / 28°F 82% 1020 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 33%
Most Significant Cloud Type: medium
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 13
Jan		01:00

SSE
SSE

 7 / 15 mph 35 / 28°F 83% 1020 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 100%
Most Significant Cloud Type: medium
28%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SSE
SSE

 6 / 13 mph 34 / 29°F 83% 1019 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 76%
Most Significant Cloud Type: medium
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SSE
SSE

 6 / 13 mph 34 / 29°F 84% 1017 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 13%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

S
S

 4 / 9 mph 41 / 38°F 83% 1017 mb
Low level cloud: 0%
Mid level cloud: 84%
High level cloud: 32%
Most Significant Cloud Type: medium
85%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SSW
SSW

 9 / 10 mph 52 / 48°F 76% 1015 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: medium
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SSW
SSW

 10 / 17 mph 51 / 47°F 76% 1014 mb
Low level cloud: 0%
Mid level cloud: 5%
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

S
S

 6 / 13 mph 41 / 37°F 89% 1015 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 30%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

S
S

 5 / 11 mph 39 / 36°F 88% 1016 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 100%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 14
Jan		01:00

SSE
SSE

 4 / 7 mph 38 / 36°F 89% 1017 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 75%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

ESE
ESE

 4 / 9 mph 37 / 33°F 86% 1018 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 100%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

ESE
ESE

 4 / 8 mph 38 / 35°F 81% 1018 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 61%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

ESE
ESE

 4 / 7 mph 42 / 40°F 78% 1020 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 98%
Most Significant Cloud Type: medium
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

S
S

 3 / 4 mph 51 / 50°F 67% 1019 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 100%
Most Significant Cloud Type: medium
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SSE
SSE

 2 / 4 mph 49 / 48°F 76% 1018 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 100%
Most Significant Cloud Type: medium
23%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SE
SE

 4 / 9 mph 42 / 39°F 82% 1019 mb
Low level cloud: 1%
Mid level cloud: 89%
High level cloud: 100%
Most Significant Cloud Type: medium
95%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SE
SE

 4 / 9 mph 42 / 40°F 86% 1019 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
Thu 15
Jan		01:00

SSE
SSE

 3 / 6 mph 43 / 41°F 85% 1019 mb
Low level cloud: 7%
Mid level cloud: 93%
High level cloud: 98%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SE
SE

 2 / 4 mph 43 / 43°F 89% 1019 mb
Low level cloud: 70%
Mid level cloud: 90%
High level cloud: 5%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
07:00

E
E

 2 / 4 mph 43 / 43°F 89% 1018 mb
Low level cloud: 30%
Mid level cloud: 60%
High level cloud: 0%
Most Significant Cloud Type: low
50%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
10:00

ESE
ESE

 3 / 5 mph 45 / 44°F 83% 1017 mb
Low level cloud: 4%
Mid level cloud: 29%
High level cloud: 0%
Most Significant Cloud Type: medium
40%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SSW
SSW

 8 / 9 mph 52 / 49°F 70% 1014 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SSW
SSW

 10 / 13 mph 50 / 46°F 79% 1012 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

S
S

 8 / 15 mph 44 / 40°F 85% 1013 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
22:00

S
S

 5 / 10 mph 41 / 38°F 88% 1014 mb
Low level cloud: 1%
Mid level cloud: 13%
High level cloud: 100%
Most Significant Cloud Type: medium
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 16
Jan		01:00

SE
SE

 3 / 7 mph 40 / 37°F 86% 1015 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 80%
Most Significant Cloud Type: medium
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SE
SE

 2 / 5 mph 41 / 40°F 82% 1015 mb
Low level cloud: 10%
Mid level cloud: 58%
High level cloud: 100%
Most Significant Cloud Type: medium
89%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SE
SE

 4 / 7 mph 41 / 39°F 85% 1014 mb
Low level cloud: 81%
Mid level cloud: 86%
High level cloud: 97%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

ESE
ESE

 2 / 3 mph 44 / 44°F 85% 1014 mb
Low level cloud: 32%
Mid level cloud: 46%
High level cloud: 43%
Most Significant Cloud Type: low
53%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

E
E

 1 / 1 mph 51 / 50°F 72% 1013 mb
Low level cloud: 17%
Mid level cloud: 46%
High level cloud: 3%
Most Significant Cloud Type: low
33%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

ESE
ESE

 3 / 4 mph 48 / 47°F 84% 1012 mb
Low level cloud: 56%
Mid level cloud: 44%
High level cloud: 9%
Most Significant Cloud Type: low
72%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SE
SE

 4 / 6 mph 44 / 42°F 89% 1012 mb
Low level cloud: 70%
Mid level cloud: 54%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

S
S

 2 / 4 mph 42 / 41°F 92% 1013 mb
Low level cloud: 63%
Mid level cloud: 67%
High level cloud: 39%
Most Significant Cloud Type: low
91%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 17
Jan		01:00

WSW
WSW

 3 / 5 mph 40 / 39°F 98% 1012 mb
Low level cloud: 99%
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
04:00

N
N

 1 / 2 mph 38 / 38°F 96% 1012 mb
Low level cloud: 99%
Mid level cloud: 94%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.3 In of precipitation over the past 3 hours.
0.3 In
07:00

SE
SE

 2 / 2 mph 38 / 38°F 97% 1013 mb
Low level cloud: 97%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.4 In of precipitation over the past 3 hours.
0.4 In
10:00

WSW
WSW

 0 / 0 mph 41 / 41°F 97% 1013 mb
Low level cloud: 93%
Mid level cloud: 100%
High level cloud: 88%
Most Significant Cloud Type: low
100%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
13:00

NNW
NNW

 2 / 2 mph 44 / 44°F 95% 1013 mb
Low level cloud: 93%
Mid level cloud: 52%
High level cloud: 33%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

N
N

 3 / 3 mph 45 / 44°F 95% 1012 mb
Low level cloud: 92%
Mid level cloud: 45%
High level cloud: 19%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NNW
NNW

 3 / 3 mph 43 / 42°F 97% 1013 mb
Low level cloud: 90%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NNW
NNW

 3 / 4 mph 41 / 39°F 98% 1013 mb
Low level cloud: 92%
Mid level cloud: 100%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sun 18
Jan		01:00

SE
SE

 3 / 6 mph 38 / 36°F 90% 1000 mb
Low level cloud: 7%
Mid level cloud: 10%
High level cloud: 33%
Most Significant Cloud Type: low
13%
0.0 In
07:00

SE
SE

 4 / 9 mph 34 / 31°F 85% 1014 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: medium
10%
0.0 In
13:00

NE
NE

 4 / 7 mph 49 / 47°F 55% 1021 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 20%
Most Significant Cloud Type: high
20%
0.0 In
19:00

ENE
ENE

 3 / 5 mph 44 / 42°F 79% 1018 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 38%
Most Significant Cloud Type: medium
47%
0.0 In
Mon 19
Jan		01:00

SSW
SSW

 7 / 11 mph 39 / 34°F 94% 1000 mb
Low level cloud: 83%
Mid level cloud: 49%
High level cloud: 19%
Most Significant Cloud Type: low
100%
0.0 In
07:00

SSE
SSE

 9 / 13 mph 39 / 33°F 93% 1016 mb
Low level cloud: 68%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
13:00

SSW
SSW

 8 / 11 mph 42 / 37°F 75% 1011 mb
Low level cloud: 0%
Mid level cloud: 97%
High level cloud: 0%
Most Significant Cloud Type: medium
97%
0.0 In
19:00

E
E

 5 / 9 mph 46 / 44°F 88% 1015 mb
Low level cloud: 1%
Mid level cloud: 17%
High level cloud: 30%
Most Significant Cloud Type: medium
20%
0.0 In
Tue 20
Jan		01:00

S
S

 3 / 5 mph 42 / 40°F 86% 1018 mb
Low level cloud: 19%
Mid level cloud: 72%
High level cloud: 33%
Most Significant Cloud Type: medium
100%
0.0 In
07:00

ESE
ESE

 4 / 9 mph 39 / 36°F 76% 1017 mb
Low level cloud: 0%
Mid level cloud: 31%
High level cloud: 100%
Most Significant Cloud Type: medium
34%
0.0 In
13:00

SSW
SSW

 3 / 4 mph 50 / 49°F 74% 1019 mb
Low level cloud: 10%
Mid level cloud: 76%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
19:00

SSE
SSE

 4 / 9 mph 45 / 42°F 85% 1015 mb
Low level cloud: 0%
Mid level cloud: 65%
High level cloud: 95%
Most Significant Cloud Type: medium
68%
0.0 In
Wed 21
Jan		01:00

ESE
ESE

 2 / 4 mph 41 / 40°F 86% 1021 mb
Low level cloud: 84%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
07:00

SSE
SSE

 3 / 7 mph 43 / 41°F 86% 1013 mb
Low level cloud: 0%
Mid level cloud: 56%
High level cloud: 100%
Most Significant Cloud Type: medium
59%
0.0 In
13:00

N
N

 2 / 2 mph 44 / 44°F 97% 1024 mb
Low level cloud: 99%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.6 In
19:00

SSW
SSW

 5 / 8 mph 49 / 47°F 88% 1010 mb
Low level cloud: 13%
Mid level cloud: 43%
High level cloud: 100%
Most Significant Cloud Type: medium
83%
0.0 In
Thu 22
Jan		01:00

NNE
NNE

 4 / 6 mph 40 / 37°F 95% 1026 mb
Low level cloud: 56%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
57%
0.1 In
07:00

ENE
ENE

 5 / 8 mph 45 / 43°F 97% 1009 mb
Low level cloud: 62%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.1 In
13:00

N
N

 8 / 11 mph 43 / 38°F 78% 1028 mb
Low level cloud: 30%
Mid level cloud: 16%
High level cloud: 16%
Most Significant Cloud Type: low
37%
0.0 In
19:00

NE
NE

 3 / 4 mph 50 / 50°F 95% 1015 mb
Low level cloud: 94%
Mid level cloud: 81%
High level cloud: 11%
Most Significant Cloud Type: low
100%
0.7 In
Fri 23
Jan		01:00

E
E

 4 / 6 mph 39 / 37°F 90% 1030 mb
Low level cloud: 95%
Mid level cloud: 87%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
07:00

N
N

 3 / 5 mph 42 / 40°F 98% 1018 mb
Low level cloud: 91%
Mid level cloud: 22%
High level cloud: 2%
Most Significant Cloud Type: low
98%
0.0 In
13:00

N
N

 7 / 10 mph 43 / 39°F 93% 1033 mb
Low level cloud: 84%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: low
84%
0.1 In
19:00

E
E

 3 / 4 mph 51 / 51°F 91% 1019 mb
Low level cloud: 2%
Mid level cloud: 3%
High level cloud: 2%
Most Significant Cloud Type: low
3%
0.0 In
Sat 24
Jan		01:00

NNE
NNE

 4 / 7 mph 39 / 36°F 94% 1037 mb
Low level cloud: 12%
Mid level cloud: 5%
High level cloud: 94%
Most Significant Cloud Type: low
25%
0.0 In
07:00

SSE
SSE

 5 / 11 mph 40 / 36°F 83% 1021 mb
Low level cloud: 0%
Mid level cloud: 30%
High level cloud: 100%
Most Significant Cloud Type: medium
34%
0.0 In
13:00

NNE
NNE

 5 / 6 mph 49 / 47°F 69% 1034 mb
Low level cloud: 0%
Mid level cloud: 27%
High level cloud: 1%
Most Significant Cloud Type: medium
27%
0.0 In
19:00

S
S

 9 / 17 mph 44 / 39°F 87% 1019 mb
Low level cloud: 6%
Mid level cloud: 12%
High level cloud: 28%
Most Significant Cloud Type: low
13%
0.0 In
Sun 25
Jan		01:00

NNE
NNE

 3 / 6 mph 37 / 35°F 91% 1033 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 43%
Most Significant Cloud Type: high
43%
0.0 In
07:00

S
S

 3 / 5 mph 44 / 43°F 85% 1018 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 100%
Most Significant Cloud Type: medium
24%
0.0 In
13:00

N
N

 7 / 10 mph 45 / 41°F 78% 1032 mb
Low level cloud: 22%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
22%
0.0 In
19:00

W
W

 2 / 2 mph 47 / 47°F 91% 1019 mb
Low level cloud: 87%
Mid level cloud: 66%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.1 In
Mon 26
Jan		01:00

ENE
ENE

 3 / 7 mph 36 / 33°F 91% 1031 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 38%
Most Significant Cloud Type: high
37%
0.0 In
07:00

SE
SE

 3 / 6 mph 44 / 42°F 88% 1019 mb
Low level cloud: 62%
Mid level cloud: 98%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.1 In
13:00

N
N

 2 / 2 mph 56 / 56°F 50% 1027 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 22%
Most Significant Cloud Type: high
21%
0.0 In
19:00

ENE
ENE

 5 / 9 mph 43 / 41°F 92% 1024 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 9%
Most Significant Cloud Type: medium
8%
0.2 In

Other Locations Near to Grenoble

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