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Massena 14 Day Long Range Forecast

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

New York, United States Of America

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

The next 14 day outlook for Massena shows the average daytime maximum temperature will be around 22°C, with a high for the two weeks of 26°C expected on the afternoon of Sunday 2nd. The average minimum temperature will be 11°C, dipping to its lowest on the morning of Friday 31st at 6°C. The coming 14 days will have some days seeing a little precipitation and some days with rain. It looks like Monday 27th will have the most precipitation with an accumulation of around 19.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sun 26
May		01:00

E
E

 1 / 1 mph 56 / 56°F 93% 1012 mb
Low level cloud: 64%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: low
72%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NNE
NNE

 1 / 2 mph 52 / 52°F 96% 1013 mb
Low level cloud: 28%
Mid level cloud: 17%
High level cloud: 2%
Most Significant Cloud Type: low
34%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WNW
WNW

 1 / 1 mph 64 / 60°F 85% 1015 mb
Low level cloud: 47%
Mid level cloud: 21%
High level cloud: 55%
Most Significant Cloud Type: low
60%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NNE
NNE

 4 / 4 mph 71 / 68°F 66% 1014 mb
Low level cloud: 7%
Mid level cloud: 18%
High level cloud: 42%
Most Significant Cloud Type: low
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NNE
NNE

 5 / 6 mph 77 / 77°F 56% 1014 mb
Low level cloud: 21%
Mid level cloud: 13%
High level cloud: 2%
Most Significant Cloud Type: low
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NE
NE

 6 / 8 mph 75 / 76°F 61% 1013 mb
Low level cloud: 9%
Mid level cloud: 17%
High level cloud: 1%
Most Significant Cloud Type: low
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

ENE
ENE

 7 / 13 mph 67 / 65°F 82% 1013 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 30%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

E
E

 10 / 19 mph 62 / 62°F 81% 1012 mb
Low level cloud: 0%
Mid level cloud: 27%
High level cloud: 32%
Most Significant Cloud Type: medium
28%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 27
May		19:00

SSW
SSW

 9 / 17 mph 67 / 65°F 97% 1000 mb
Low level cloud: 18%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: low
45%
Expect 0.4 In of precipitation over the past 3 hours.
0.4 In
22:00

S
S

 6 / 10 mph 64 / 64°F 97% 999 mb
Low level cloud: 23%
Mid level cloud: 45%
High level cloud: 96%
Most Significant Cloud Type: low
50%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Tue 28
May		01:00

SW
SW

 14 / 25 mph 63 / 63°F 95% 999 mb
Low level cloud: 73%
Mid level cloud: 19%
High level cloud: 100%
Most Significant Cloud Type: low
91%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
04:00

SSW
SSW

 13 / 20 mph 60 / 60°F 94% 1000 mb
Low level cloud: 92%
Mid level cloud: 25%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SW
SW

 13 / 17 mph 60 / 60°F 90% 1001 mb
Low level cloud: 85%
Mid level cloud: 71%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SW
SW

 12 / 17 mph 61 / 61°F 89% 1001 mb
Low level cloud: 97%
Mid level cloud: 32%
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

SW
SW

 17 / 20 mph 71 / 70°F 58% 1000 mb
Low level cloud: 65%
Mid level cloud: 41%
High level cloud: 0%
Most Significant Cloud Type: low
79%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SW
SW

 17 / 19 mph 68 / 67°F 68% 1000 mb
Low level cloud: 25%
Mid level cloud: 14%
High level cloud: 7%
Most Significant Cloud Type: low
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SW
SW

 14 / 20 mph 59 / 56°F 80% 1001 mb
Low level cloud: 85%
Mid level cloud: 44%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SW
SW

 10 / 15 mph 55 / 53°F 94% 1001 mb
Low level cloud: 100%
Mid level cloud: 89%
High level cloud: 9%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 29
May		01:00

WNW
WNW

 12 / 18 mph 55 / 52°F 97% 1002 mb
Low level cloud: 100%
Mid level cloud: 60%
High level cloud: 9%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

WNW
WNW

 12 / 18 mph 51 / 46°F 96% 1005 mb
Low level cloud: 100%
Mid level cloud: 57%
High level cloud: 19%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WNW
WNW

 12 / 17 mph 49 / 44°F 94% 1008 mb
Low level cloud: 97%
Mid level cloud: 100%
High level cloud: 19%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WNW
WNW

 11 / 12 mph 55 / 52°F 75% 1010 mb
Low level cloud: 76%
Mid level cloud: 43%
High level cloud: 11%
Most Significant Cloud Type: low
92%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WNW
WNW

 11 / 12 mph 66 / 64°F 52% 1010 mb
Low level cloud: 35%
Mid level cloud: 46%
High level cloud: 48%
Most Significant Cloud Type: low
57%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NW
NW

 5 / 7 mph 65 / 62°F 66% 1011 mb
Low level cloud: 0%
Mid level cloud: 27%
High level cloud: 95%
Most Significant Cloud Type: medium
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

ENE
ENE

 4 / 7 mph 57 / 55°F 79% 1012 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 94%
Most Significant Cloud Type: medium
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SW
SW

 6 / 13 mph 51 / 49°F 80% 1013 mb
Low level cloud: 0%
Mid level cloud: 66%
High level cloud: 100%
Most Significant Cloud Type: medium
70%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 30
May		01:00

W
W

 7 / 13 mph 51 / 49°F 75% 1013 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 55%
Most Significant Cloud Type: medium
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

W
W

 5 / 9 mph 48 / 46°F 75% 1014 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 45%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WNW
WNW

 6 / 7 mph 54 / 51°F 64% 1016 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 10%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WNW
WNW

 10 / 12 mph 62 / 61°F 50% 1016 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 6%
Most Significant Cloud Type: medium
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NW
NW

 10 / 12 mph 67 / 65°F 42% 1014 mb
Low level cloud: 0%
Mid level cloud: 29%
High level cloud: 7%
Most Significant Cloud Type: medium
28%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WNW
WNW

 8 / 10 mph 69 / 67°F 44% 1014 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 13%
Most Significant Cloud Type: medium
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

E
E

 7 / 12 mph 56 / 53°F 77% 1016 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 22%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

ESE
ESE

 5 / 9 mph 49 / 47°F 87% 1017 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 32%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 31
May		01:00

SSE
SSE

 2 / 5 mph 46 / 46°F 92% 1017 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 79%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

W
W

 2 / 4 mph 44 / 44°F 94% 1018 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 5%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WNW
WNW

 4 / 4 mph 55 / 53°F 72% 1019 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
10:00

NNW
NNW

 7 / 8 mph 67 / 65°F 49% 1019 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
13:00

NNW
NNW

 8 / 10 mph 72 / 69°F 39% 1018 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 13%
Most Significant Cloud Type: medium
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WNW
WNW

 9 / 11 mph 72 / 70°F 46% 1017 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 3%
Most Significant Cloud Type: medium
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

W
W

 6 / 14 mph 63 / 60°F 75% 1018 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 14%
Most Significant Cloud Type: medium
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

WNW
WNW

 4 / 9 mph 53 / 52°F 70% 1018 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 7%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 01
Jun		01:00

SW
SW

 4 / 9 mph 48 / 47°F 82% 1019 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SW
SW

 4 / 9 mph 46 / 44°F 85% 1020 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

W
W

 4 / 5 mph 58 / 56°F 64% 1021 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 5%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NW
NW

 6 / 7 mph 70 / 67°F 50% 1021 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NNW
NNW

 7 / 8 mph 75 / 75°F 41% 1020 mb
Low level cloud: 0%
Mid level cloud: 27%
High level cloud: 2%
Most Significant Cloud Type: medium
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NW
NW

 6 / 7 mph 76 / 76°F 44% 1019 mb
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 32%
Most Significant Cloud Type: medium
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WSW
WSW

 6 / 12 mph 64 / 62°F 69% 1019 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
22:00

WSW
WSW

 5 / 10 mph 56 / 55°F 73% 1020 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 9%
Most Significant Cloud Type: medium
7%
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
Jun		01:00

WSW
WSW

 4 / 9 mph 46 / 44°F 70% 1018 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
0.0 In
07:00

SSE
SSE

 3 / 6 mph 64 / 64°F 62% 1022 mb
Low level cloud: 0%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: medium
27%
0.0 In
13:00

WSW
WSW

 3 / 6 mph 79 / 80°F 40% 1022 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
19:00

SW
SW

 6 / 13 mph 70 / 70°F 91% 1014 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 12%
Most Significant Cloud Type: medium
5%
0.0 In
Mon 03
Jun		01:00

SSW
SSW

 7 / 14 mph 55 / 53°F 72% 1013 mb
Low level cloud: 0%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: medium
30%
0.0 In
07:00

SSE
SSE

 7 / 15 mph 60 / 60°F 66% 1014 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 32%
Most Significant Cloud Type: medium
45%
0.0 In
13:00

NE
NE

 4 / 7 mph 69 / 69°F 82% 1009 mb
Low level cloud: 88%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
19:00

ENE
ENE

 4 / 9 mph 66 / 66°F 88% 1013 mb
Low level cloud: 5%
Mid level cloud: 47%
High level cloud: 32%
Most Significant Cloud Type: medium
62%
0.0 In
Tue 04
Jun		01:00

E
E

 3 / 6 mph 61 / 61°F 98% 1013 mb
Low level cloud: 67%
Mid level cloud: 25%
High level cloud: 14%
Most Significant Cloud Type: low
100%
0.0 In
07:00

SSE
SSE

 7 / 15 mph 62 / 62°F 97% 1007 mb
Low level cloud: 93%
Mid level cloud: 90%
High level cloud: 79%
Most Significant Cloud Type: low
100%
0.2 In
13:00

ENE
ENE

 7 / 14 mph 72 / 76°F 68% 1006 mb
Low level cloud: 35%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: low
62%
0.0 In
19:00

SW
SW

 9 / 18 mph 63 / 63°F 93% 1005 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 1%
Most Significant Cloud Type: medium
20%
0.7 In
Wed 05
Jun		01:00

NE
NE

 8 / 17 mph 56 / 54°F 98% 1001 mb
Low level cloud: 99%
Mid level cloud: 47%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.4 In
07:00

SW
SW

 8 / 16 mph 61 / 61°F 93% 1007 mb
Low level cloud: 35%
Mid level cloud: 19%
High level cloud: 10%
Most Significant Cloud Type: low
43%
0.0 In
13:00

NNE
NNE

 6 / 14 mph 60 / 60°F 95% 1006 mb
Low level cloud: 93%
Mid level cloud: 26%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
19:00

SW
SW

 11 / 22 mph 64 / 64°F 75% 1007 mb
Low level cloud: 1%
Mid level cloud: 27%
High level cloud: 1%
Most Significant Cloud Type: medium
30%
0.1 In
Thu 06
Jun		01:00

ENE
ENE

 6 / 12 mph 49 / 46°F 96% 1009 mb
Low level cloud: 13%
Mid level cloud: 44%
High level cloud: 98%
Most Significant Cloud Type: medium
83%
0.0 In
07:00

SW
SW

 7 / 15 mph 61 / 62°F 74% 1008 mb
Low level cloud: 23%
Mid level cloud: 9%
High level cloud: 9%
Most Significant Cloud Type: low
26%
0.0 In
13:00

ENE
ENE

 9 / 18 mph 67 / 67°F 71% 1006 mb
Low level cloud: 22%
Mid level cloud: 75%
High level cloud: 15%
Most Significant Cloud Type: medium
100%
0.0 In
19:00

ENE
ENE

 5 / 11 mph 65 / 65°F 81% 1004 mb
Low level cloud: 0%
Mid level cloud: 26%
High level cloud: 100%
Most Significant Cloud Type: medium
29%
0.0 In
Fri 07
Jun		01:00

ENE
ENE

 6 / 12 mph 58 / 58°F 99% 1002 mb
Low level cloud: 97%
Mid level cloud: 70%
High level cloud: 11%
Most Significant Cloud Type: low
100%
0.4 In
07:00

N
N

 2 / 4 mph 67 / 67°F 80% 1005 mb
Low level cloud: 4%
Mid level cloud: 6%
High level cloud: 100%
Most Significant Cloud Type: medium
21%
0.0 In
13:00

E
E

 6 / 12 mph 61 / 61°F 98% 995 mb
Low level cloud: 94%
Mid level cloud: 84%
High level cloud: 32%
Most Significant Cloud Type: low
100%
0.4 In
19:00

NE
NE

 4 / 9 mph 70 / 70°F 85% 1006 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 10%
Most Significant Cloud Type: medium
11%
0.0 In
Sat 08
Jun		01:00

WSW
WSW

 4 / 9 mph 55 / 55°F 99% 991 mb
Low level cloud: 87%
Mid level cloud: 44%
High level cloud: 13%
Most Significant Cloud Type: low
100%
0.1 In
07:00

NNW
NNW

 4 / 8 mph 63 / 63°F 93% 1008 mb
Low level cloud: 34%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
49%
0.1 In
13:00

N
N

 8 / 17 mph 58 / 56°F 96% 995 mb
Low level cloud: 100%
Mid level cloud: 94%
High level cloud: 55%
Most Significant Cloud Type: low
100%
0.0 In
19:00

NW
NW

 3 / 6 mph 67 / 67°F 88% 1010 mb
Low level cloud: 0%
Mid level cloud: 33%
High level cloud: 0%
Most Significant Cloud Type: medium
34%
0.2 In
Sun 09
Jun		01:00

WNW
WNW

 4 / 9 mph 48 / 47°F 98% 1005 mb
Low level cloud: 39%
Mid level cloud: 42%
High level cloud: 0%
Most Significant Cloud Type: low
53%
0.1 In
07:00

WSW
WSW

 4 / 8 mph 64 / 64°F 82% 1014 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 11%
Most Significant Cloud Type: medium
8%
0.0 In
13:00

WNW
WNW

 8 / 17 mph 71 / 71°F 54% 1008 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 9%
Most Significant Cloud Type: medium
8%
0.0 In
19:00

SW
SW

 9 / 20 mph 69 / 69°F 74% 1011 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
0.0 In
Mon 10
Jun		01:00

SW
SW

 6 / 12 mph 54 / 52°F 96% 1010 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: medium
18%
0.0 In
07:00

SSW
SSW

 9 / 19 mph 65 / 65°F 72% 1009 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 8%
Most Significant Cloud Type: medium
19%
0.0 In
13:00

WNW
WNW

 9 / 20 mph 70 / 70°F 48% 1013 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 8%
Most Significant Cloud Type: medium
15%
0.0 In
19:00

SW
SW

 10 / 21 mph 70 / 70°F 83% 1006 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 100%
Most Significant Cloud Type: medium
48%
0.1 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