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Hoover Dam 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Hoover Dam

Nevada, United States Of America

Long range weather outlook for Hoover Dam includes 14 day forecast summary:

The forecast for Hoover Dam in the coming two weeks is predicting the average daytime maximum temperature will be around 15°C, with a high for the two weeks of 25°C expected on the afternoon of Wednesday 12th. The mean minimum temperature will be 11°C, dipping to its lowest on the morning of Thursday 20th at 5°C. Expect the coming 14 days to have some days seeing a little precipitation and some days with rain. It looks like Saturday 15th will have the most precipitation with an accumulation of around 31.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Tue 11
Nov		01:00

NE
NE

 2 / 3 mph 65 / 65°F 24% 1019 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 5%
Most Significant Cloud Type: high
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NE
NE

 2 / 4 mph 63 / 63°F 26% 1018 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 85%
Most Significant Cloud Type: high
84%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

N
N

 2 / 4 mph 65 / 64°F 25% 1020 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 2%
Most Significant Cloud Type: high
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NNE
NNE

 2 / 4 mph 68 / 66°F 16% 1019 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 66%
Most Significant Cloud Type: high
65%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NNW
NNW

 2 / 4 mph 71 / 69°F 14% 1017 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 33%
Most Significant Cloud Type: high
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NE
NE

 0 / 0 mph 75 / 73°F 17% 1015 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
19:00

ENE
ENE

 2 / 4 mph 69 / 69°F 20% 1016 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 7%
Most Significant Cloud Type: high
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

ENE
ENE

 2 / 4 mph 68 / 68°F 21% 1016 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 44%
Most Significant Cloud Type: high
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 12
Nov		19:00

SSE
SSE

 6 / 9 mph 73 / 72°F 20% 1014 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 69%
Most Significant Cloud Type: medium
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SSE
SSE

 5 / 10 mph 69 / 69°F 23% 1015 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 16%
Most Significant Cloud Type: medium
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 13
Nov		01:00

SSE
SSE

 5 / 10 mph 66 / 66°F 27% 1015 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
04:00

SSE
SSE

 5 / 11 mph 64 / 64°F 29% 1014 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
07:00

SSE
SSE

 4 / 8 mph 66 / 65°F 28% 1016 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

S
S

 6 / 13 mph 70 / 69°F 18% 1015 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

S
S

 17 / 33 mph 76 / 74°F 15% 1012 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SSE
SSE

 16 / 31 mph 74 / 73°F 17% 1011 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

S
S

 11 / 16 mph 74 / 73°F 21% 1012 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 16%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SSE
SSE

 7 / 12 mph 70 / 70°F 26% 1012 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 14
Nov		01:00

SE
SE

 7 / 11 mph 67 / 67°F 28% 1012 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
04:00

SE
SE

 6 / 10 mph 67 / 67°F 31% 1011 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: medium
50%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SSE
SSE

 6 / 9 mph 67 / 66°F 33% 1012 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 74%
Most Significant Cloud Type: medium
27%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

S
S

 9 / 19 mph 66 / 65°F 26% 1012 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 96%
Most Significant Cloud Type: medium
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

S
S

 20 / 40 mph 66 / 65°F 36% 1011 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: medium
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SSE
SSE

 8 / 18 mph 63 / 63°F 43% 1012 mb
Low level cloud: 0%
Mid level cloud: 78%
High level cloud: 100%
Most Significant Cloud Type: medium
82%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

E
E

 4 / 6 mph 65 / 65°F 46% 1013 mb
Low level cloud: 0%
Mid level cloud: 68%
High level cloud: 96%
Most Significant Cloud Type: medium
71%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SW
SW

 1 / 2 mph 60 / 60°F 49% 1014 mb
Low level cloud: 0%
Mid level cloud: 92%
High level cloud: 69%
Most Significant Cloud Type: medium
95%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 15
Nov		01:00

NNE
NNE

 3 / 7 mph 52 / 52°F 75% 1014 mb
Low level cloud: 20%
Mid level cloud: 99%
High level cloud: 95%
Most Significant Cloud Type: medium
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
04:00

N
N

 5 / 10 mph 50 / 49°F 85% 1012 mb
Low level cloud: 49%
Mid level cloud: 85%
High level cloud: 76%
Most Significant Cloud Type: low
88%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
07:00

NNE
NNE

 4 / 9 mph 51 / 50°F 86% 1012 mb
Low level cloud: 69%
Mid level cloud: 99%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
10:00

NE
NE

 5 / 11 mph 54 / 51°F 78% 1011 mb
Low level cloud: 37%
Mid level cloud: 44%
High level cloud: 96%
Most Significant Cloud Type: low
64%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

ENE
ENE

 7 / 15 mph 52 / 49°F 83% 1008 mb
Low level cloud: 47%
Mid level cloud: 57%
High level cloud: 100%
Most Significant Cloud Type: low
79%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
16:00

SSW
SSW

 8 / 17 mph 51 / 47°F 91% 1007 mb
Low level cloud: 48%
Mid level cloud: 60%
High level cloud: 100%
Most Significant Cloud Type: low
80%
Expect 0.6 In of precipitation over the past 3 hours.
0.6 In
19:00

SSE
SSE

 11 / 22 mph 52 / 48°F 78% 1007 mb
Low level cloud: 1%
Mid level cloud: 19%
High level cloud: 20%
Most Significant Cloud Type: medium
24%
Expect 0.3 In of precipitation over the past 3 hours.
0.3 In
22:00

S
S

 10 / 17 mph 55 / 52°F 78% 1008 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 33%
Most Significant Cloud Type: medium
26%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Sun 16
Nov		01:00

S
S

 8 / 15 mph 53 / 50°F 72% 1008 mb
Low level cloud: 0%
Mid level cloud: 28%
High level cloud: 100%
Most Significant Cloud Type: medium
32%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
04:00

S
S

 9 / 16 mph 52 / 49°F 78% 1009 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 38%
Most Significant Cloud Type: medium
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SSW
SSW

 6 / 13 mph 45 / 42°F 77% 1011 mb
Low level cloud: 58%
Mid level cloud: 68%
High level cloud: 33%
Most Significant Cloud Type: low
85%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

S
S

 9 / 18 mph 47 / 42°F 77% 1012 mb
Low level cloud: 37%
Mid level cloud: 69%
High level cloud: 8%
Most Significant Cloud Type: low
62%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

S
S

 12 / 25 mph 50 / 45°F 62% 1011 mb
Low level cloud: 30%
Mid level cloud: 68%
High level cloud: 8%
Most Significant Cloud Type: low
55%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

S
S

 10 / 21 mph 53 / 49°F 57% 1010 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

S
S

 6 / 12 mph 53 / 52°F 65% 1011 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
22:00

S
S

 5 / 8 mph 54 / 53°F 66% 1012 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: medium
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 17
Nov		01:00

SE
SE

 4 / 10 mph 52 / 50°F 65% 1011 mb
Low level cloud: 0%
Mid level cloud: 95%
High level cloud: 1%
Most Significant Cloud Type: medium
95%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SSE
SSE

 5 / 10 mph 50 / 49°F 64% 1011 mb
Low level cloud: 0%
Mid level cloud: 77%
High level cloud: 2%
Most Significant Cloud Type: medium
76%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SSE
SSE

 6 / 13 mph 50 / 48°F 64% 1012 mb
Low level cloud: 0%
Mid level cloud: 97%
High level cloud: 38%
Most Significant Cloud Type: medium
98%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SSE
SSE

 13 / 26 mph 54 / 50°F 53% 1013 mb
Low level cloud: 0%
Mid level cloud: 54%
High level cloud: 100%
Most Significant Cloud Type: medium
57%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

S
S

 18 / 32 mph 57 / 53°F 50% 1011 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: medium
50%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

S
S

 10 / 17 mph 58 / 55°F 53% 1010 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 100%
Most Significant Cloud Type: medium
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

S
S

 6 / 11 mph 55 / 54°F 66% 1011 mb
Low level cloud: 1%
Mid level cloud: 50%
High level cloud: 3%
Most Significant Cloud Type: medium
53%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SSE
SSE

 5 / 10 mph 53 / 52°F 74% 1012 mb
Low level cloud: 0%
Mid level cloud: 47%
High level cloud: 0%
Most Significant Cloud Type: medium
47%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Tue 18
Nov		04:00

N
N

 1 / 2 mph 54 / 54°F 46% 1013 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
0.0 In
10:00

N
N

 4 / 7 mph 57 / 57°F 30% 1019 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 33%
Most Significant Cloud Type: medium
45%
0.0 In
16:00

NNW
NNW

 15 / 29 mph 54 / 50°F 35% 1009 mb
Low level cloud: 0%
Mid level cloud: 50%
High level cloud: 0%
Most Significant Cloud Type: medium
49%
0.0 In
22:00

NNW
NNW

 5 / 9 mph 61 / 61°F 49% 1017 mb
Low level cloud: 0%
Mid level cloud: 41%
High level cloud: 6%
Most Significant Cloud Type: medium
41%
0.0 In
Wed 19
Nov		04:00

N
N

 5 / 10 mph 59 / 59°F 55% 1019 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 10%
Most Significant Cloud Type: medium
3%
0.0 In
10:00

N
N

 2 / 4 mph 56 / 56°F 44% 1019 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 16%
Most Significant Cloud Type: medium
6%
0.0 In
16:00

SSE
SSE

 15 / 32 mph 56 / 52°F 68% 1006 mb
Low level cloud: 0%
Mid level cloud: 42%
High level cloud: 0%
Most Significant Cloud Type: medium
41%
0.0 In
22:00

S
S

 10 / 22 mph 46 / 40°F 76% 1007 mb
Low level cloud: 79%
Mid level cloud: 100%
High level cloud: 95%
Most Significant Cloud Type: low
100%
0.0 In
Thu 20
Nov		04:00

NNW
NNW

 5 / 10 mph 45 / 42°F 84% 1011 mb
Low level cloud: 72%
Mid level cloud: 64%
High level cloud: 9%
Most Significant Cloud Type: low
95%
0.4 In
10:00

NW
NW

 4 / 9 mph 44 / 42°F 75% 1013 mb
Low level cloud: 24%
Mid level cloud: 53%
High level cloud: 0%
Most Significant Cloud Type: low
42%
0.2 In
16:00

SSE
SSE

 7 / 14 mph 51 / 49°F 61% 1012 mb
Low level cloud: 23%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: low
32%
0.0 In
22:00

SSE
SSE

 2 / 4 mph 52 / 52°F 69% 1013 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
0.0 In
Fri 21
Nov		04:00

ESE
ESE

 2 / 4 mph 51 / 51°F 78% 1016 mb
Low level cloud: 0%
Mid level cloud: 27%
High level cloud: 0%
Most Significant Cloud Type: medium
27%
0.0 In
10:00

NW
NW

 4 / 9 mph 50 / 48°F 45% 1017 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 32%
Most Significant Cloud Type: medium
9%
0.0 In
16:00

SSE
SSE

 3 / 7 mph 54 / 54°F 52% 1014 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 7%
Most Significant Cloud Type: medium
7%
0.0 In
22:00

SW
SW

 2 / 5 mph 57 / 58°F 52% 1017 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 32%
Most Significant Cloud Type: medium
3%
0.0 In
Sat 22
Nov		04:00

SSE
SSE

 2 / 5 mph 53 / 54°F 76% 1014 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: medium
13%
0.0 In
10:00

NNE
NNE

 2 / 5 mph 51 / 51°F 39% 1019 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 32%
Most Significant Cloud Type: medium
4%
0.0 In
16:00

NE
NE

 1 / 2 mph 55 / 55°F 47% 1012 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
7%
0.0 In
22:00

SE
SE

 1 / 3 mph 58 / 58°F 42% 1016 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.0 In
Sun 23
Nov		04:00

SE
SE

 4 / 9 mph 55 / 54°F 65% 1012 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
0.0 In
10:00

NNW
NNW

 6 / 12 mph 51 / 49°F 33% 1019 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
16:00

S
S

 1 / 1 mph 58 / 58°F 38% 1014 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.0 In
22:00

N
N

 19 / 41 mph 49 / 43°F 31% 1025 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Mon 24
Nov		04:00

NNE
NNE

 8 / 17 mph 53 / 50°F 49% 1022 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
10:00

NNE
NNE

 17 / 36 mph 43 / 35°F 25% 1033 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 97%
Most Significant Cloud Type: high
97%
0.0 In
16:00

N
N

 6 / 13 mph 54 / 53°F 26% 1024 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
22:00

N
N

 6 / 12 mph 49 / 47°F 33% 1030 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 32%
Most Significant Cloud Type: high
31%
0.0 In
Tue 25
Nov		04:00

N
N

 6 / 12 mph 52 / 50°F 32% 1027 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
10:00

N
N

 4 / 7 mph 44 / 42°F 23% 1028 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 8%
Most Significant Cloud Type: high
8%
0.0 In
16:00

NNE
NNE

 4 / 8 mph 60 / 60°F 25% 1022 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
22:00

NNW
NNW

 1 / 3 mph 50 / 50°F 30% 1022 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 5%
Most Significant Cloud Type: high
4%
0.0 In
Wed 26
Nov		04:00

NNE
NNE

 4 / 9 mph 57 / 57°F 35% 1021 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 75%
Most Significant Cloud Type: high
75%
0.0 In
10:00

NNE
NNE

 4 / 8 mph 48 / 47°F 18% 1019 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
0.0 In
16:00

ESE
ESE

 1 / 1 mph 63 / 64°F 33% 1015 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 81%
Most Significant Cloud Type: high
81%
0.0 In
22:00

S
S

 4 / 9 mph 56 / 55°F 26% 1013 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 73%
Most Significant Cloud Type: medium
8%
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