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Thorpe in Balne 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Thorpe in Balne

South Yorkshire, United Kingdom

Long range weather outlook for Thorpe in Balne includes 14 day forecast summary:

The next 14 day outlook for Thorpe in Balne shows the average daytime maximum temperature will be around 17°C, with a high for the two weeks of 20°C expected on the afternoon of Sunday 19th. The mean minimum temperature will be 10°C, dipping to its lowest on the morning of Tuesday 21st at 7°C. Expect the next 14 days have some days seeing a little precipitation and some days with rain. The indicators are that Sunday 26th will have the most precipitation with an accumulation of around 9.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sun 19
May		18:00

ENE
ENE

 8 / 9 mph 66 / 64°F 66% 1016 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
21:00

NE
NE

 5 / 9 mph 54 / 51°F 88% 1018 mb
Low level cloud: 5%
Mid level cloud: 25%
High level cloud: 0%
Most Significant Cloud Type: medium
39%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 20
May		00:00

N
N

 6 / 9 mph 49 / 46°F 92% 1018 mb
Low level cloud: 47%
Mid level cloud: 23%
High level cloud: 4%
Most Significant Cloud Type: low
55%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

N
N

 6 / 9 mph 48 / 45°F 92% 1017 mb
Low level cloud: 97%
Mid level cloud: 29%
High level cloud: 17%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

N
N

 6 / 8 mph 51 / 49°F 86% 1017 mb
Low level cloud: 92%
Mid level cloud: 25%
High level cloud: 14%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NNE
NNE

 8 / 9 mph 58 / 56°F 70% 1017 mb
Low level cloud: 89%
Mid level cloud: 30%
High level cloud: 14%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NE
NE

 9 / 10 mph 64 / 63°F 61% 1016 mb
Low level cloud: 75%
Mid level cloud: 32%
High level cloud: 0%
Most Significant Cloud Type: low
85%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NE
NE

 9 / 10 mph 64 / 62°F 62% 1014 mb
Low level cloud: 40%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: low
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NE
NE

 9 / 10 mph 60 / 57°F 58% 1014 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 9%
Most Significant Cloud Type: medium
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NE
NE

 6 / 9 mph 51 / 48°F 71% 1014 mb
Low level cloud: 0%
Mid level cloud: 77%
High level cloud: 18%
Most Significant Cloud Type: medium
77%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 21
May		00:00

N
N

 5 / 9 mph 46 / 43°F 80% 1014 mb
Low level cloud: 0%
Mid level cloud: 42%
High level cloud: 10%
Most Significant Cloud Type: medium
42%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NNW
NNW

 6 / 10 mph 45 / 42°F 77% 1012 mb
Low level cloud: 2%
Mid level cloud: 94%
High level cloud: 4%
Most Significant Cloud Type: medium
98%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NNW
NNW

 6 / 9 mph 49 / 46°F 72% 1011 mb
Low level cloud: 2%
Mid level cloud: 86%
High level cloud: 100%
Most Significant Cloud Type: medium
96%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NNW
NNW

 7 / 9 mph 52 / 49°F 74% 1011 mb
Low level cloud: 2%
Mid level cloud: 99%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NNW
NNW

 6 / 7 mph 58 / 57°F 77% 1009 mb
Low level cloud: 87%
Mid level cloud: 86%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

W
W

 3 / 5 mph 57 / 57°F 93% 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
18:00

SW
SW

 0 / 0 mph 56 / 56°F 98% 1008 mb
Low level cloud: 100%
Mid level cloud: 94%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

WNW
WNW

 2 / 2 mph 55 / 55°F 98% 1008 mb
Low level cloud: 100%
Mid level cloud: 83%
High level cloud: 90%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 22
May		00:00

W
W

 2 / 3 mph 54 / 54°F 98% 1008 mb
Low level cloud: 100%
Mid level cloud: 83%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

W
W

 3 / 5 mph 54 / 54°F 97% 1007 mb
Low level cloud: 91%
Mid level cloud: 50%
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

W
W

 5 / 7 mph 54 / 52°F 96% 1007 mb
Low level cloud: 54%
Mid level cloud: 44%
High level cloud: 98%
Most Significant Cloud Type: low
81%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WNW
WNW

 8 / 10 mph 58 / 55°F 87% 1008 mb
Low level cloud: 36%
Mid level cloud: 17%
High level cloud: 32%
Most Significant Cloud Type: low
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WNW
WNW

 11 / 13 mph 65 / 63°F 66% 1008 mb
Low level cloud: 54%
Mid level cloud: 29%
High level cloud: 0%
Most Significant Cloud Type: low
63%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WNW
WNW

 11 / 13 mph 68 / 66°F 56% 1007 mb
Low level cloud: 64%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: low
70%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WNW
WNW

 11 / 14 mph 63 / 62°F 68% 1009 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 3%
Most Significant Cloud Type: medium
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

W
W

 9 / 13 mph 55 / 52°F 82% 1011 mb
Low level cloud: 1%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: medium
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 23
May		00:00

WNW
WNW

 9 / 14 mph 53 / 50°F 87% 1012 mb
Low level cloud: 6%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: medium
37%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

WNW
WNW

 8 / 13 mph 51 / 48°F 90% 1014 mb
Low level cloud: 20%
Mid level cloud: 13%
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

WNW
WNW

 9 / 12 mph 55 / 50°F 83% 1016 mb
Low level cloud: 35%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
37%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

N
N

 6 / 8 mph 55 / 54°F 85% 1018 mb
Low level cloud: 99%
Mid level cloud: 32%
High level cloud: 6%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NNE
NNE

 4 / 6 mph 56 / 55°F 86% 1019 mb
Low level cloud: 94%
Mid level cloud: 62%
High level cloud: 20%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NNE
NNE

 7 / 10 mph 56 / 54°F 86% 1020 mb
Low level cloud: 90%
Mid level cloud: 43%
High level cloud: 18%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NNE
NNE

 6 / 9 mph 56 / 54°F 77% 1021 mb
Low level cloud: 94%
Mid level cloud: 46%
High level cloud: 15%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NE
NE

 6 / 9 mph 53 / 49°F 83% 1023 mb
Low level cloud: 29%
Mid level cloud: 46%
High level cloud: 32%
Most Significant Cloud Type: low
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 24
May		00:00

NNE
NNE

 3 / 5 mph 47 / 46°F 85% 1023 mb
Low level cloud: 1%
Mid level cloud: 44%
High level cloud: 19%
Most Significant Cloud Type: medium
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NE
NE

 1 / 2 mph 46 / 46°F 83% 1023 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 9%
Most Significant Cloud Type: medium
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SE
SE

 2 / 2 mph 50 / 49°F 78% 1023 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 3%
Most Significant Cloud Type: medium
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSE
SSE

 6 / 7 mph 58 / 56°F 65% 1023 mb
Low level cloud: 3%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: medium
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSE
SSE

 9 / 10 mph 65 / 63°F 59% 1022 mb
Low level cloud: 56%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: low
62%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSE
SSE

 9 / 11 mph 63 / 62°F 68% 1022 mb
Low level cloud: 79%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: low
84%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSE
SSE

 9 / 12 mph 64 / 62°F 74% 1021 mb
Low level cloud: 42%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: low
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SE
SE

 8 / 14 mph 55 / 52°F 89% 1022 mb
Low level cloud: 86%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 25
May		00:00

SSE
SSE

 9 / 14 mph 54 / 52°F 91% 1021 mb
Low level cloud: 58%
Mid level cloud: 20%
High level cloud: 7%
Most Significant Cloud Type: low
65%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSE
SSE

 8 / 11 mph 53 / 50°F 83% 1021 mb
Low level cloud: 63%
Mid level cloud: 12%
High level cloud: 100%
Most Significant Cloud Type: low
79%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SSE
SSE

 8 / 11 mph 53 / 49°F 80% 1021 mb
Low level cloud: 0%
Mid level cloud: 30%
High level cloud: 81%
Most Significant Cloud Type: medium
33%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSE
SSE

 10 / 12 mph 61 / 59°F 68% 1019 mb
Low level cloud: 7%
Mid level cloud: 22%
High level cloud: 100%
Most Significant Cloud Type: medium
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSE
SSE

 13 / 15 mph 66 / 66°F 64% 1017 mb
Low level cloud: 76%
Mid level cloud: 23%
High level cloud: 100%
Most Significant Cloud Type: low
96%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSE
SSE

 13 / 17 mph 66 / 65°F 78% 1014 mb
Low level cloud: 13%
Mid level cloud: 48%
High level cloud: 100%
Most Significant Cloud Type: medium
87%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSE
SSE

 11 / 20 mph 62 / 60°F 89% 1013 mb
Low level cloud: 25%
Mid level cloud: 55%
High level cloud: 100%
Most Significant Cloud Type: low
55%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

SSW
SSW

 6 / 11 mph 58 / 57°F 93% 1013 mb
Low level cloud: 80%
Mid level cloud: 60%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sun 26
May		00:00

ESE
ESE

 7 / 15 mph 54 / 52°F 96% 1016 mb
Low level cloud: 33%
Mid level cloud: 56%
High level cloud: 46%
Most Significant Cloud Type: low
58%
0.0 In
06:00

SSE
SSE

 6 / 11 mph 56 / 55°F 83% 1020 mb
Low level cloud: 25%
Mid level cloud: 97%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
12:00

ESE
ESE

 8 / 17 mph 60 / 60°F 87% 1007 mb
Low level cloud: 75%
Mid level cloud: 16%
High level cloud: 100%
Most Significant Cloud Type: low
92%
0.0 In
18:00

E
E

 9 / 18 mph 67 / 67°F 85% 1014 mb
Low level cloud: 9%
Mid level cloud: 20%
High level cloud: 100%
Most Significant Cloud Type: medium
50%
0.0 In
Mon 27
May		00:00

S
S

 6 / 12 mph 54 / 53°F 96% 1014 mb
Low level cloud: 35%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
49%
0.0 In
06:00

N
N

 9 / 13 mph 54 / 51°F 87% 1022 mb
Low level cloud: 55%
Mid level cloud: 20%
High level cloud: 2%
Most Significant Cloud Type: low
62%
0.0 In
12:00

NE
NE

 11 / 22 mph 64 / 64°F 54% 1019 mb
Low level cloud: 0%
Mid level cloud: 32%
High level cloud: 21%
Most Significant Cloud Type: medium
33%
0.0 In
18:00

NNW
NNW

 6 / 12 mph 65 / 65°F 79% 1016 mb
Low level cloud: 53%
Mid level cloud: 39%
High level cloud: 9%
Most Significant Cloud Type: low
68%
0.0 In
Tue 28
May		00:00

N
N

 8 / 15 mph 50 / 46°F 86% 1022 mb
Low level cloud: 1%
Mid level cloud: 81%
High level cloud: 90%
Most Significant Cloud Type: medium
86%
0.0 In
06:00

NNW
NNW

 6 / 13 mph 53 / 51°F 95% 1018 mb
Low level cloud: 81%
Mid level cloud: 18%
High level cloud: 7%
Most Significant Cloud Type: low
87%
0.0 In
12:00

NNE
NNE

 14 / 28 mph 65 / 65°F 55% 1021 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 20%
Most Significant Cloud Type: medium
21%
0.0 In
18:00

ENE
ENE

 5 / 11 mph 62 / 62°F 86% 1018 mb
Low level cloud: 34%
Mid level cloud: 26%
High level cloud: 2%
Most Significant Cloud Type: low
43%
0.0 In
Wed 29
May		00:00

N
N

 11 / 21 mph 50 / 45°F 89% 1020 mb
Low level cloud: 13%
Mid level cloud: 2%
High level cloud: 4%
Most Significant Cloud Type: low
14%
0.0 In
06:00

NNW
NNW

 5 / 11 mph 53 / 52°F 92% 1018 mb
Low level cloud: 55%
Mid level cloud: 32%
High level cloud: 0%
Most Significant Cloud Type: low
66%
0.0 In
12:00

NNE
NNE

 15 / 30 mph 65 / 65°F 64% 1018 mb
Low level cloud: 51%
Mid level cloud: 15%
High level cloud: 100%
Most Significant Cloud Type: low
68%
0.0 In
18:00

E
E

 8 / 18 mph 63 / 63°F 80% 1015 mb
Low level cloud: 70%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
72%
0.0 In
Thu 30
May		00:00

NNE
NNE

 10 / 20 mph 53 / 50°F 83% 1018 mb
Low level cloud: 86%
Mid level cloud: 9%
High level cloud: 33%
Most Significant Cloud Type: low
93%
0.0 In
06:00

N
N

 6 / 12 mph 56 / 55°F 96% 1016 mb
Low level cloud: 91%
Mid level cloud: 21%
High level cloud: 6%
Most Significant Cloud Type: low
99%
0.0 In
12:00

NNE
NNE

 10 / 19 mph 60 / 60°F 80% 1017 mb
Low level cloud: 97%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
18:00

ENE
ENE

 11 / 23 mph 65 / 65°F 77% 1013 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
0.1 In
Fri 31
May		00:00

N
N

 7 / 14 mph 54 / 52°F 90% 1018 mb
Low level cloud: 91%
Mid level cloud: 7%
High level cloud: 9%
Most Significant Cloud Type: low
94%
0.0 In
06:00

NNE
NNE

 9 / 19 mph 57 / 55°F 95% 1010 mb
Low level cloud: 86%
Mid level cloud: 23%
High level cloud: 2%
Most Significant Cloud Type: low
93%
0.0 In
12:00

NE
NE

 6 / 12 mph 62 / 62°F 95% 1015 mb
Low level cloud: 84%
Mid level cloud: 87%
High level cloud: 9%
Most Significant Cloud Type: low
100%
0.0 In
18:00

ENE
ENE

 9 / 18 mph 61 / 61°F 93% 1010 mb
Low level cloud: 93%
Mid level cloud: 83%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.2 In
Sat 01
Jun		00:00

N
N

 6 / 11 mph 56 / 55°F 98% 1013 mb
Low level cloud: 93%
Mid level cloud: 24%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
06:00

NNE
NNE

 2 / 3 mph 59 / 59°F 99% 1010 mb
Low level cloud: 99%
Mid level cloud: 13%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.4 In
12:00

NE
NE

 4 / 9 mph 59 / 59°F 98% 1009 mb
Low level cloud: 100%
Mid level cloud: 85%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.2 In
18:00

SSE
SSE

 5 / 10 mph 69 / 69°F 79% 1011 mb
Low level cloud: 15%
Mid level cloud: 16%
High level cloud: 99%
Most Significant Cloud Type: low
32%
0.1 In
Sun 02
Jun		00:00

ENE
ENE

 2 / 4 mph 58 / 59°F 99% 1009 mb
Low level cloud: 94%
Mid level cloud: 22%
High level cloud: 2%
Most Significant Cloud Type: low
100%
0.1 In
06:00

NE
NE

 5 / 10 mph 56 / 55°F 96% 1011 mb
Low level cloud: 35%
Mid level cloud: 98%
High level cloud: 100%
Most Significant Cloud Type: low
81%
0.1 In
12:00

SSW
SSW

 2 / 5 mph 72 / 76°F 64% 1011 mb
Low level cloud: 63%
Mid level cloud: 19%
High level cloud: 54%
Most Significant Cloud Type: low
76%
0.0 In
18:00

WSW
WSW

 3 / 5 mph 61 / 61°F 96% 1010 mb
Low level cloud: 86%
Mid level cloud: 51%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.1 In
Mon 03
Jun		00:00

N
N

 3 / 6 mph 65 / 65°F 95% 1013 mb
Low level cloud: 20%
Mid level cloud: 4%
High level cloud: 9%
Most Significant Cloud Type: low
22%
0.0 In
06:00

SSE
SSE

 4 / 9 mph 56 / 56°F 92% 1011 mb
Low level cloud: 24%
Mid level cloud: 43%
High level cloud: 100%
Most Significant Cloud Type: low
51%
0.0 In
12:00

ENE
ENE

 10 / 21 mph 66 / 66°F 74% 1013 mb
Low level cloud: 92%
Mid level cloud: 5%
High level cloud: 7%
Most Significant Cloud Type: low
94%
0.0 In
18:00

SSE
SSE

 8 / 16 mph 65 / 65°F 73% 1011 mb
Low level cloud: 10%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
12%
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