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North Stifford 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for North Stifford

Essex, United Kingdom

Long range weather outlook for North Stifford includes 14 day forecast summary:

The outlook for North Stifford in the two weeks ahead shows the average daytime maximum temperature will be around 21°C, with a high for the two weeks of 23°C expected on the afternoon of Thursday 27th. The mean minimum temperature will be 12°C, dipping to its lowest on the morning of Thursday 20th at 9°C. Expect the next 14 days have mostly dry days although Friday 21st and Saturday 22nd are likely to see a significant amount of rain. It looks like Friday 21st will have the most precipitation with an accumulation of around 25.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Mon 17
Jun		18:00

SSW
SSW

 10 / 11 mph 69 / 67°F 63% 1011 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 100%
Most Significant Cloud Type: medium
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SW
SW

 4 / 7 mph 63 / 60°F 81% 1013 mb
Low level cloud: 2%
Mid level cloud: 4%
High level cloud: 89%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 18
Jun		00:00

NW
NW

 2 / 4 mph 58 / 59°F 86% 1013 mb
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 14%
Most Significant Cloud Type: medium
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

N
N

 4 / 7 mph 54 / 54°F 90% 1013 mb
Low level cloud: 7%
Mid level cloud: 77%
High level cloud: 32%
Most Significant Cloud Type: medium
98%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

N
N

 5 / 7 mph 58 / 55°F 79% 1014 mb
Low level cloud: 1%
Mid level cloud: 46%
High level cloud: 61%
Most Significant Cloud Type: medium
51%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

N
N

 5 / 6 mph 66 / 64°F 63% 1014 mb
Low level cloud: 1%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: medium
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NNE
NNE

 6 / 6 mph 72 / 68°F 56% 1014 mb
Low level cloud: 39%
Mid level cloud: 31%
High level cloud: 100%
Most Significant Cloud Type: low
61%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NE
NE

 7 / 9 mph 70 / 67°F 62% 1014 mb
Low level cloud: 39%
Mid level cloud: 24%
High level cloud: 60%
Most Significant Cloud Type: low
54%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NE
NE

 7 / 9 mph 68 / 66°F 69% 1014 mb
Low level cloud: 29%
Mid level cloud: 16%
High level cloud: 73%
Most Significant Cloud Type: low
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NE
NE

 6 / 9 mph 59 / 57°F 91% 1016 mb
Low level cloud: 71%
Mid level cloud: 19%
High level cloud: 47%
Most Significant Cloud Type: low
83%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 19
Jun		00:00

NNE
NNE

 9 / 13 mph 54 / 51°F 93% 1017 mb
Low level cloud: 52%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
54%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

N
N

 10 / 15 mph 51 / 47°F 93% 1018 mb
Low level cloud: 43%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NNE
NNE

 10 / 13 mph 55 / 51°F 87% 1020 mb
Low level cloud: 38%
Mid level cloud: 3%
High level cloud: 6%
Most Significant Cloud Type: low
39%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NE
NE

 12 / 14 mph 64 / 62°F 65% 1020 mb
Low level cloud: 47%
Mid level cloud: 0%
High level cloud: 33%
Most Significant Cloud Type: low
51%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

ENE
ENE

 12 / 14 mph 67 / 66°F 56% 1021 mb
Low level cloud: 36%
Mid level cloud: 0%
High level cloud: 32%
Most Significant Cloud Type: low
40%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

ENE
ENE

 11 / 13 mph 67 / 66°F 60% 1021 mb
Low level cloud: 3%
Mid level cloud: 0%
High level cloud: 10%
Most Significant Cloud Type: low
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

E
E

 10 / 11 mph 64 / 62°F 69% 1022 mb
Low level cloud: 7%
Mid level cloud: 0%
High level cloud: 2%
Most Significant Cloud Type: low
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ENE
ENE

 6 / 10 mph 56 / 53°F 81% 1023 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 49%
Most Significant Cloud Type: high
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 20
Jun		00:00

NE
NE

 5 / 7 mph 53 / 52°F 81% 1023 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 12%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NE
NE

 4 / 8 mph 50 / 48°F 84% 1022 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
06:00

NE
NE

 6 / 8 mph 56 / 53°F 78% 1021 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ENE
ENE

 10 / 11 mph 65 / 64°F 60% 1020 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 33%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

E
E

 11 / 13 mph 68 / 67°F 56% 1020 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 4%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

ENE
ENE

 11 / 12 mph 69 / 67°F 55% 1018 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 31%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

ENE
ENE

 10 / 11 mph 66 / 65°F 62% 1017 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 4%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NNE
NNE

 10 / 14 mph 61 / 59°F 64% 1015 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 16%
Most Significant Cloud Type: medium
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 21
Jun		00:00

NNE
NNE

 10 / 16 mph 57 / 55°F 68% 1013 mb
Low level cloud: 4%
Mid level cloud: 44%
High level cloud: 32%
Most Significant Cloud Type: medium
55%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NNE
NNE

 12 / 21 mph 55 / 51°F 81% 1009 mb
Low level cloud: 96%
Mid level cloud: 49%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

N
N

 14 / 25 mph 53 / 49°F 98% 1007 mb
Low level cloud: 99%
Mid level cloud: 93%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.6 In of precipitation over the past 3 hours.
0.6 In
09:00

NNW
NNW

 14 / 21 mph 57 / 53°F 98% 1006 mb
Low level cloud: 99%
Mid level cloud: 45%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.3 In of precipitation over the past 3 hours.
0.3 In
12:00

NNW
NNW

 14 / 17 mph 60 / 60°F 98% 1006 mb
Low level cloud: 100%
Mid level cloud: 45%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WNW
WNW

 14 / 17 mph 62 / 62°F 97% 1008 mb
Low level cloud: 100%
Mid level cloud: 91%
High level cloud: 15%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NW
NW

 10 / 11 mph 63 / 61°F 93% 1010 mb
Low level cloud: 40%
Mid level cloud: 41%
High level cloud: 7%
Most Significant Cloud Type: low
54%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WSW
WSW

 6 / 11 mph 60 / 58°F 94% 1011 mb
Low level cloud: 54%
Mid level cloud: 33%
High level cloud: 0%
Most Significant Cloud Type: low
65%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 22
Jun		00:00

W
W

 9 / 15 mph 55 / 53°F 85% 1012 mb
Low level cloud: 0%
Mid level cloud: 30%
High level cloud: 18%
Most Significant Cloud Type: medium
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

WSW
WSW

 10 / 16 mph 54 / 51°F 91% 1012 mb
Low level cloud: 21%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

WSW
WSW

 10 / 12 mph 57 / 54°F 89% 1013 mb
Low level cloud: 43%
Mid level cloud: 45%
High level cloud: 22%
Most Significant Cloud Type: low
61%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WSW
WSW

 11 / 12 mph 62 / 62°F 83% 1012 mb
Low level cloud: 98%
Mid level cloud: 17%
High level cloud: 33%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WSW
WSW

 10 / 13 mph 69 / 67°F 70% 1012 mb
Low level cloud: 62%
Mid level cloud: 25%
High level cloud: 17%
Most Significant Cloud Type: low
72%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

W
W

 11 / 14 mph 70 / 69°F 59% 1012 mb
Low level cloud: 94%
Mid level cloud: 19%
High level cloud: 3%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WNW
WNW

 8 / 10 mph 66 / 64°F 74% 1013 mb
Low level cloud: 31%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

W
W

 5 / 10 mph 60 / 58°F 80% 1015 mb
Low level cloud: 1%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: medium
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 23
Jun		00:00

W
W

 6 / 10 mph 56 / 55°F 87% 1015 mb
Low level cloud: 0%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: medium
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

WNW
WNW

 4 / 8 mph 53 / 52°F 90% 1015 mb
Low level cloud: 4%
Mid level cloud: 26%
High level cloud: 0%
Most Significant Cloud Type: medium
37%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

WNW
WNW

 5 / 6 mph 58 / 56°F 81% 1017 mb
Low level cloud: 11%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WNW
WNW

 6 / 6 mph 67 / 64°F 60% 1017 mb
Low level cloud: 28%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WNW
WNW

 6 / 7 mph 72 / 69°F 49% 1017 mb
Low level cloud: 60%
Mid level cloud: 46%
High level cloud: 19%
Most Significant Cloud Type: low
78%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SW
SW

 3 / 4 mph 69 / 67°F 63% 1017 mb
Low level cloud: 73%
Mid level cloud: 51%
High level cloud: 4%
Most Significant Cloud Type: low
91%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

W
W

 6 / 7 mph 72 / 68°F 61% 1017 mb
Low level cloud: 24%
Mid level cloud: 23%
High level cloud: 4%
Most Significant Cloud Type: low
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSW
SSW

 5 / 9 mph 64 / 61°F 84% 1019 mb
Low level cloud: 8%
Mid level cloud: 7%
High level cloud: 7%
Most Significant Cloud Type: low
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Mon 24
Jun		00:00

E
E

 3 / 5 mph 61 / 60°F 88% 1019 mb
Low level cloud: 88%
Mid level cloud: 34%
High level cloud: 2%
Most Significant Cloud Type: low
99%
0.0 In
06:00

NNW
NNW

 9 / 20 mph 53 / 50°F 87% 1015 mb
Low level cloud: 63%
Mid level cloud: 60%
High level cloud: 5%
Most Significant Cloud Type: low
83%
0.0 In
12:00

SW
SW

 12 / 26 mph 74 / 77°F 60% 1019 mb
Low level cloud: 46%
Mid level cloud: 5%
High level cloud: 4%
Most Significant Cloud Type: low
48%
0.0 In
18:00

SW
SW

 11 / 23 mph 72 / 76°F 68% 1016 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
Tue 25
Jun		00:00

E
E

 3 / 6 mph 65 / 65°F 93% 1023 mb
Low level cloud: 17%
Mid level cloud: 4%
High level cloud: 4%
Most Significant Cloud Type: low
19%
0.0 In
06:00

W
W

 4 / 7 mph 69 / 69°F 74% 1018 mb
Low level cloud: 9%
Mid level cloud: 2%
High level cloud: 12%
Most Significant Cloud Type: low
11%
0.0 In
12:00

E
E

 11 / 21 mph 73 / 76°F 56% 1016 mb
Low level cloud: 72%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
75%
0.0 In
18:00

E
E

 10 / 18 mph 70 / 70°F 70% 1022 mb
Low level cloud: 11%
Mid level cloud: 0%
High level cloud: 2%
Most Significant Cloud Type: low
11%
0.0 In
Wed 26
Jun		00:00

NE
NE

 5 / 11 mph 60 / 60°F 85% 1021 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
06:00

NE
NE

 6 / 10 mph 59 / 59°F 80% 1022 mb
Low level cloud: 4%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
4%
0.0 In
12:00

ENE
ENE

 11 / 22 mph 69 / 69°F 49% 1021 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
18:00

E
E

 9 / 16 mph 66 / 66°F 71% 1021 mb
Low level cloud: 11%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
11%
0.0 In
Thu 27
Jun		00:00

NE
NE

 5 / 11 mph 59 / 59°F 87% 1020 mb
Low level cloud: 2%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
2%
0.0 In
06:00

NNE
NNE

 6 / 11 mph 60 / 60°F 84% 1021 mb
Low level cloud: 19%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: low
19%
0.0 In
12:00

E
E

 11 / 23 mph 73 / 77°F 64% 1019 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
18:00

E
E

 9 / 16 mph 67 / 67°F 72% 1020 mb
Low level cloud: 6%
Mid level cloud: 0%
High level cloud: 13%
Most Significant Cloud Type: low
7%
0.0 In
Fri 28
Jun		00:00

NE
NE

 6 / 12 mph 65 / 65°F 88% 1017 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.0 In
06:00

NE
NE

 4 / 8 mph 63 / 63°F 71% 1019 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 11%
Most Significant Cloud Type: medium
7%
0.0 In
12:00

ENE
ENE

 11 / 22 mph 76 / 78°F 57% 1016 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 21%
Most Significant Cloud Type: high
20%
0.0 In
18:00

E
E

 8 / 15 mph 69 / 69°F 56% 1019 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: high
0%
0.0 In
Sat 29
Jun		00:00

NE
NE

 5 / 10 mph 66 / 66°F 81% 1016 mb
Low level cloud: 0%
Mid level cloud: 31%
High level cloud: 32%
Most Significant Cloud Type: medium
32%
0.0 In
06:00

ENE
ENE

 6 / 10 mph 65 / 65°F 75% 1018 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
12:00

ENE
ENE

 15 / 30 mph 75 / 78°F 56% 1017 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 33%
Most Significant Cloud Type: medium
25%
0.0 In
18:00

ENE
ENE

 10 / 18 mph 68 / 68°F 56% 1015 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Sun 30
Jun		00:00

NNE
NNE

 12 / 23 mph 60 / 60°F 75% 1018 mb
Low level cloud: 19%
Mid level cloud: 33%
High level cloud: 12%
Most Significant Cloud Type: low
31%
0.0 In
06:00

NE
NE

 7 / 13 mph 63 / 63°F 80% 1011 mb
Low level cloud: 5%
Mid level cloud: 0%
High level cloud: 32%
Most Significant Cloud Type: low
9%
0.0 In
12:00

NE
NE

 14 / 29 mph 72 / 76°F 54% 1018 mb
Low level cloud: 3%
Mid level cloud: 1%
High level cloud: 20%
Most Significant Cloud Type: low
6%
0.0 In
18:00

ENE
ENE

 9 / 16 mph 72 / 76°F 55% 1007 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 37%
Most Significant Cloud Type: medium
17%
0.0 In
Mon 01
Jul		00:00

NNE
NNE

 9 / 19 mph 53 / 51°F 88% 1018 mb
Low level cloud: 29%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
33%
0.0 In
06:00

NNE
NNE

 5 / 9 mph 62 / 62°F 97% 1004 mb
Low level cloud: 48%
Mid level cloud: 85%
High level cloud: 17%
Most Significant Cloud Type: low
79%
0.0 In
12:00

ENE
ENE

 9 / 19 mph 65 / 65°F 54% 1014 mb
Low level cloud: 61%
Mid level cloud: 20%
High level cloud: 10%
Most Significant Cloud Type: low
68%
0.0 In
18:00

ENE
ENE

 2 / 5 mph 68 / 68°F 93% 1002 mb
Low level cloud: 42%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: low
69%
0.2 In
Tue 02
Jul		00:00

NNE
NNE

 5 / 11 mph 57 / 57°F 80% 1013 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 98%
Most Significant Cloud Type: medium
8%
0.0 In
06:00

SSW
SSW

 6 / 12 mph 65 / 65°F 92% 1000 mb
Low level cloud: 41%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: low
46%
0.1 In
12:00

N
N

 4 / 9 mph 66 / 66°F 53% 1014 mb
Low level cloud: 3%
Mid level cloud: 32%
High level cloud: 18%
Most Significant Cloud Type: medium
41%
0.0 In
18:00

S
S

 15 / 31 mph 60 / 60°F 86% 998 mb
Low level cloud: 95%
Mid level cloud: 96%
High level cloud: 5%
Most Significant Cloud Type: low
100%
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