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Dayton 14 Day Long Range Forecast

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

Nevada, United States Of America

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

The next 14 day outlook for Dayton shows the average daytime maximum temperature will be around 30°C, with a high for the two weeks of 36°C expected on the afternoon of Thursday 6th. The mean minimum temperature will be 11°C, dipping to its lowest on the morning of Sunday 2nd at 7°C. Expect the following 14 days ahead to remain predominantly dry. On the whole winds are likely to be moderate. Expect the strongest wind on the afternoon of Saturday 1st, coming from a westerly direction, and reaching around 29mph.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Tue 28
May		01:00

WSW
WSW

 6 / 13 mph 53 / 51°F 48% 1015 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
04:00

WSW
WSW

 6 / 13 mph 51 / 48°F 52% 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
07:00

WSW
WSW

 4 / 5 mph 69 / 67°F 42% 1015 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
10:00

WSW
WSW

 5 / 6 mph 80 / 76°F 24% 1013 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

W
W

 17 / 20 mph 84 / 79°F 20% 1011 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
16:00

W
W

 26 / 30 mph 80 / 76°F 20% 1011 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 7%
Most Significant Cloud Type: high
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SW
SW

 9 / 10 mph 67 / 65°F 29% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: high
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

WSW
WSW

 6 / 14 mph 52 / 50°F 41% 1016 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
Wed 29
May		19:00

N
N

 8 / 9 mph 70 / 68°F 25% 1014 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 7%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

N
N

 5 / 10 mph 56 / 56°F 22% 1017 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
Thu 30
May		01:00

N
N

 4 / 8 mph 52 / 51°F 25% 1018 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

NW
NW

 1 / 3 mph 49 / 49°F 31% 1019 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

NE
NE

 4 / 5 mph 64 / 62°F 24% 1019 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 6%
Most Significant Cloud Type: high
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

ENE
ENE

 6 / 7 mph 73 / 71°F 19% 1017 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
13:00

ENE
ENE

 8 / 9 mph 79 / 74°F 15% 1015 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 19%
Most Significant Cloud Type: high
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

ENE
ENE

 8 / 9 mph 79 / 76°F 15% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 96%
Most Significant Cloud Type: high
95%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

ENE
ENE

 6 / 13 mph 66 / 64°F 20% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 11%
Most Significant Cloud Type: high
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

ENE
ENE

 5 / 11 mph 56 / 55°F 24% 1015 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 11%
Most Significant Cloud Type: high
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 31
May		01:00

ESE
ESE

 3 / 6 mph 53 / 54°F 30% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 3%
Most Significant Cloud Type: high
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SE
SE

 2 / 4 mph 50 / 50°F 32% 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

ESE
ESE

 2 / 2 mph 69 / 67°F 22% 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
10:00

ESE
ESE

 2 / 3 mph 78 / 74°F 18% 1012 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
13:00

SW
SW

 6 / 7 mph 86 / 80°F 15% 1008 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
16:00

WSW
WSW

 23 / 27 mph 85 / 80°F 16% 1007 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 26%
Most Significant Cloud Type: high
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WSW
WSW

 9 / 13 mph 69 / 67°F 27% 1009 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
22:00

WSW
WSW

 7 / 15 mph 55 / 53°F 37% 1011 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
Sat 01
Jun		01:00

SW
SW

 8 / 17 mph 51 / 48°F 44% 1011 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

SW
SW

 8 / 16 mph 50 / 47°F 43% 1011 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 76%
Most Significant Cloud Type: high
75%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SW
SW

 10 / 11 mph 70 / 69°F 30% 1010 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
10:00

WSW
WSW

 23 / 26 mph 80 / 76°F 14% 1008 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 5%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WSW
WSW

 29 / 33 mph 82 / 77°F 14% 1006 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 41%
Most Significant Cloud Type: high
40%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WSW
WSW

 26 / 30 mph 74 / 74°F 27% 1008 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 99%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

W
W

 9 / 11 mph 64 / 63°F 39% 1009 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

W
W

 6 / 13 mph 50 / 47°F 53% 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
Sun 02
Jun		01:00

W
W

 5 / 10 mph 47 / 44°F 61% 1013 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
04:00

WSW
WSW

 4 / 7 mph 45 / 44°F 62% 1013 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
07:00

WSW
WSW

 2 / 2 mph 64 / 62°F 44% 1014 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

E
E

 1 / 1 mph 74 / 73°F 26% 1012 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 20%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NNE
NNE

 2 / 3 mph 82 / 76°F 19% 1010 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 15%
Most Significant Cloud Type: high
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NNE
NNE

 5 / 6 mph 85 / 78°F 18% 1008 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
19:00

NNE
NNE

 4 / 8 mph 74 / 73°F 25% 1009 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
22:00

SSW
SSW

 1 / 3 mph 64 / 64°F 33% 1011 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
Mon 03
Jun		01:00

SW
SW

 6 / 12 mph 57 / 56°F 43% 1012 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

SW
SW

 5 / 11 mph 54 / 53°F 49% 1012 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

SW
SW

 6 / 7 mph 75 / 75°F 35% 1011 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
10:00

WSW
WSW

 9 / 11 mph 85 / 80°F 22% 1009 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WSW
WSW

 24 / 27 mph 87 / 83°F 22% 1007 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WSW
WSW

 28 / 32 mph 83 / 79°F 27% 1007 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
19:00

WSW
WSW

 10 / 12 mph 71 / 70°F 40% 1009 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
22:00

WSW
WSW

 7 / 13 mph 58 / 57°F 54% 1011 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 33%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Tue 04
Jun		04:00

SW
SW

 7 / 14 mph 56 / 54°F 41% 1016 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
10:00

NNE
NNE

 4 / 4 mph 81 / 79°F 24% 1012 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
16:00

ENE
ENE

 4 / 4 mph 93 / 89°F 14% 1006 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
0.0 In
22:00

WSW
WSW

 6 / 13 mph 62 / 62°F 40% 1010 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
Wed 05
Jun		04:00

NE
NE

 1 / 2 mph 61 / 61°F 43% 1013 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 10%
Most Significant Cloud Type: medium
2%
0.0 In
10:00

S
S

 1 / 1 mph 87 / 83°F 22% 1008 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
16:00

ENE
ENE

 5 / 6 mph 91 / 87°F 17% 1007 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
22:00

SW
SW

 1 / 2 mph 64 / 64°F 24% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Thu 06
Jun		04:00

SW
SW

 6 / 13 mph 60 / 60°F 46% 1011 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
0.0 In
10:00

E
E

 3 / 4 mph 86 / 82°F 14% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
16:00

W
W

 15 / 17 mph 87 / 84°F 26% 1007 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 21%
Most Significant Cloud Type: medium
10%
0.0 In
22:00

SW
SW

 8 / 17 mph 66 / 66°F 40% 1012 mb
Low level cloud: 0%
Mid level cloud: 47%
High level cloud: 0%
Most Significant Cloud Type: medium
46%
0.0 In
Fri 07
Jun		04:00

SW
SW

 6 / 12 mph 57 / 56°F 54% 1013 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 17%
Most Significant Cloud Type: high
17%
0.1 In
10:00

E
E

 8 / 9 mph 89 / 85°F 19% 1007 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 1%
Most Significant Cloud Type: medium
3%
0.0 In
16:00

WNW
WNW

 17 / 25 mph 84 / 81°F 27% 1009 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: medium
15%
0.0 In
22:00

W
W

 4 / 9 mph 60 / 60°F 42% 1009 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 4%
Most Significant Cloud Type: medium
13%
0.0 In
Sat 08
Jun		04:00

WSW
WSW

 4 / 9 mph 56 / 56°F 53% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 6%
Most Significant Cloud Type: high
6%
0.0 In
10:00

ENE
ENE

 4 / 5 mph 82 / 79°F 24% 1005 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.0 In
16:00

ENE
ENE

 9 / 15 mph 91 / 87°F 15% 1008 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 9%
Most Significant Cloud Type: medium
2%
0.0 In
22:00

WSW
WSW

 6 / 8 mph 64 / 64°F 55% 1009 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 2%
Most Significant Cloud Type: medium
45%
0.0 In
Sun 09
Jun		04:00

W
W

 4 / 9 mph 58 / 58°F 47% 1014 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 95%
Most Significant Cloud Type: medium
46%
0.0 In
10:00

NE
NE

 4 / 5 mph 75 / 76°F 41% 1006 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 91%
Most Significant Cloud Type: medium
23%
0.0 In
16:00

SE
SE

 19 / 30 mph 95 / 92°F 9% 1006 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 100%
Most Significant Cloud Type: medium
14%
0.0 In
22:00

WSW
WSW

 7 / 13 mph 57 / 55°F 81% 1009 mb
Low level cloud: 1%
Mid level cloud: 22%
High level cloud: 18%
Most Significant Cloud Type: medium
24%
0.1 In
Mon 10
Jun		04:00

NW
NW

 3 / 6 mph 60 / 60°F 49% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
10:00

W
W

 8 / 14 mph 67 / 67°F 53% 1010 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 100%
Most Significant Cloud Type: medium
28%
0.1 In
16:00

E
E

 9 / 14 mph 93 / 89°F 11% 1005 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 100%
Most Significant Cloud Type: medium
24%
0.0 In
22:00

WSW
WSW

 7 / 14 mph 60 / 60°F 70% 1014 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 0%
Most Significant Cloud Type: medium
21%
0.0 In
Tue 11
Jun		04:00

SW
SW

 7 / 15 mph 52 / 50°F 74% 1013 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
0.1 In
10:00

NNE
NNE

 4 / 7 mph 70 / 71°F 45% 1013 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 15%
Most Significant Cloud Type: medium
47%
0.0 In
16:00

SSW
SSW

 17 / 33 mph 71 / 71°F 52% 1010 mb
Low level cloud: 0%
Mid level cloud: 50%
High level cloud: 22%
Most Significant Cloud Type: medium
50%
0.0 In
22:00

SW
SW

 7 / 13 mph 56 / 55°F 72% 1014 mb
Low level cloud: 0%
Mid level cloud: 29%
High level cloud: 47%
Most Significant Cloud Type: medium
30%
0.0 In
Wed 12
Jun		04:00

SW
SW

 5 / 11 mph 56 / 55°F 70% 1013 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 96%
Most Significant Cloud Type: medium
10%
0.6 In
10:00

NE
NE

 3 / 7 mph 73 / 76°F 44% 1011 mb
Low level cloud: 0%
Mid level cloud: 32%
High level cloud: 3%
Most Significant Cloud Type: medium
31%
0.0 In
16:00

SW
SW

 13 / 26 mph 73 / 76°F 49% 1012 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 12%
Most Significant Cloud Type: medium
14%
0.0 In
22:00

SW
SW

 3 / 5 mph 61 / 61°F 73% 1013 mb
Low level cloud: 0%
Mid level cloud: 31%
High level cloud: 58%
Most Significant Cloud Type: medium
32%
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