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Columbus 14 Day Long Range Forecast

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

Ohio, United States Of America

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

The forecast for Columbus in the coming two weeks is predicting the average daytime maximum temperature will be around 27°C, with a high for the two weeks of 30°C expected on the afternoon of Sunday 19th. The average minimum temperature will be 17°C, dipping to its lowest on the morning of Friday 24th at 13°C. Expect the next 14 days have some days seeing a little precipitation and some days with rain. The indicators are that Saturday 25th will have the most precipitation with an accumulation of around 11.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sun 19
May		16:00

NE
NE

 6 / 6 mph 86 / 83°F 44% 1014 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 0%
Most Significant Cloud Type: medium
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

E
E

 4 / 8 mph 80 / 80°F 64% 1014 mb
Low level cloud: 0%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: medium
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

ESE
ESE

 5 / 11 mph 71 / 71°F 71% 1015 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 20
May		01:00

SE
SE

 4 / 8 mph 68 / 68°F 71% 1015 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
04:00

SE
SE

 3 / 7 mph 66 / 66°F 74% 1015 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SSE
SSE

 3 / 4 mph 68 / 66°F 75% 1016 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
10:00

SSW
SSW

 4 / 4 mph 79 / 79°F 58% 1016 mb
Low level cloud: 0%
Mid level cloud: 4%
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

S
S

 6 / 6 mph 85 / 83°F 45% 1015 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
16:00

S
S

 6 / 7 mph 85 / 83°F 44% 1013 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
19:00

SSW
SSW

 5 / 6 mph 85 / 86°F 62% 1013 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

SW
SW

 4 / 9 mph 71 / 71°F 69% 1014 mb
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: medium
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 21
May		01:00

S
S

 3 / 7 mph 69 / 69°F 78% 1013 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 5%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SSW
SSW

 4 / 9 mph 66 / 66°F 86% 1014 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 32%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SSW
SSW

 5 / 8 mph 70 / 68°F 80% 1015 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 13%
Most Significant Cloud Type: medium
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SSW
SSW

 7 / 9 mph 81 / 80°F 64% 1015 mb
Low level cloud: 0%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: medium
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SSW
SSW

 10 / 11 mph 85 / 85°F 51% 1014 mb
Low level cloud: 0%
Mid level cloud: 31%
High level cloud: 0%
Most Significant Cloud Type: medium
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SSW
SSW

 11 / 13 mph 86 / 85°F 49% 1012 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
19:00

SSW
SSW

 8 / 12 mph 81 / 82°F 68% 1012 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 3%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SSW
SSW

 7 / 12 mph 74 / 78°F 81% 1012 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 22
May		01:00

S
S

 8 / 13 mph 71 / 71°F 88% 1012 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
04:00

SSW
SSW

 8 / 14 mph 67 / 67°F 89% 1013 mb
Low level cloud: 2%
Mid level cloud: 12%
High level cloud: 28%
Most Significant Cloud Type: medium
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SSW
SSW

 10 / 14 mph 71 / 69°F 81% 1013 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 32%
Most Significant Cloud Type: medium
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SW
SW

 14 / 17 mph 79 / 81°F 68% 1013 mb
Low level cloud: 11%
Mid level cloud: 47%
High level cloud: 18%
Most Significant Cloud Type: medium
78%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SSW
SSW

 14 / 19 mph 78 / 80°F 77% 1012 mb
Low level cloud: 3%
Mid level cloud: 14%
High level cloud: 17%
Most Significant Cloud Type: medium
24%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
16:00

SSW
SSW

 15 / 20 mph 82 / 84°F 70% 1010 mb
Low level cloud: 22%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
38%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SW
SW

 15 / 28 mph 76 / 78°F 80% 1010 mb
Low level cloud: 5%
Mid level cloud: 31%
High level cloud: 100%
Most Significant Cloud Type: medium
50%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
22:00

SW
SW

 15 / 26 mph 71 / 71°F 88% 1010 mb
Low level cloud: 23%
Mid level cloud: 28%
High level cloud: 26%
Most Significant Cloud Type: low
35%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Thu 23
May		01:00

W
W

 4 / 5 mph 68 / 68°F 86% 1011 mb
Low level cloud: 10%
Mid level cloud: 14%
High level cloud: 81%
Most Significant Cloud Type: low
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SW
SW

 6 / 8 mph 65 / 65°F 93% 1012 mb
Low level cloud: 94%
Mid level cloud: 43%
High level cloud: 1%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NNW
NNW

 9 / 12 mph 62 / 62°F 92% 1014 mb
Low level cloud: 71%
Mid level cloud: 54%
High level cloud: 39%
Most Significant Cloud Type: low
94%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NNW
NNW

 8 / 10 mph 69 / 67°F 65% 1015 mb
Low level cloud: 34%
Mid level cloud: 0%
High level cloud: 12%
Most Significant Cloud Type: low
35%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NW
NW

 7 / 8 mph 74 / 76°F 51% 1015 mb
Low level cloud: 3%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NNW
NNW

 8 / 10 mph 74 / 76°F 51% 1015 mb
Low level cloud: 3%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

N
N

 7 / 8 mph 75 / 76°F 63% 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
22:00

NE
NE

 5 / 6 mph 66 / 66°F 67% 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
Fri 24
May		01:00

ENE
ENE

 4 / 7 mph 59 / 59°F 67% 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
04:00

E
E

 4 / 7 mph 57 / 57°F 72% 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
07:00

E
E

 6 / 9 mph 60 / 58°F 71% 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
10:00

ESE
ESE

 8 / 9 mph 70 / 68°F 60% 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
13:00

ESE
ESE

 7 / 9 mph 76 / 77°F 48% 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
16:00

E
E

 7 / 8 mph 77 / 77°F 50% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 32%
Most Significant Cloud Type: high
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

E
E

 7 / 10 mph 75 / 76°F 64% 1012 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 100%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

E
E

 7 / 13 mph 66 / 65°F 76% 1012 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 13%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 25
May		01:00

E
E

 4 / 7 mph 62 / 62°F 73% 1010 mb
Low level cloud: 0%
Mid level cloud: 59%
High level cloud: 100%
Most Significant Cloud Type: medium
63%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

E
E

 2 / 3 mph 61 / 62°F 72% 1010 mb
Low level cloud: 0%
Mid level cloud: 69%
High level cloud: 100%
Most Significant Cloud Type: medium
73%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NNE
NNE

 2 / 4 mph 61 / 60°F 97% 1011 mb
Low level cloud: 71%
Mid level cloud: 96%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
10:00

S
S

 2 / 2 mph 66 / 65°F 89% 1011 mb
Low level cloud: 78%
Mid level cloud: 22%
High level cloud: 67%
Most Significant Cloud Type: low
93%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
13:00

SW
SW

 6 / 7 mph 73 / 77°F 74% 1010 mb
Low level cloud: 80%
Mid level cloud: 23%
High level cloud: 71%
Most Significant Cloud Type: low
96%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WNW
WNW

 7 / 11 mph 77 / 77°F 74% 1010 mb
Low level cloud: 55%
Mid level cloud: 42%
High level cloud: 7%
Most Significant Cloud Type: low
70%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
19:00

WNW
WNW

 4 / 6 mph 75 / 76°F 85% 1011 mb
Low level cloud: 15%
Mid level cloud: 17%
High level cloud: 11%
Most Significant Cloud Type: low
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NNW
NNW

 3 / 6 mph 67 / 67°F 92% 1012 mb
Low level cloud: 17%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sun 26
May		01:00

SSW
SSW

 10 / 21 mph 67 / 67°F 76% 1013 mb
Low level cloud: 0%
Mid level cloud: 28%
High level cloud: 100%
Most Significant Cloud Type: medium
32%
0.0 In
07:00

ENE
ENE

 2 / 4 mph 65 / 65°F 77% 1019 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 2%
Most Significant Cloud Type: medium
11%
0.0 In
13:00

SE
SE

 5 / 11 mph 77 / 78°F 46% 1015 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 100%
Most Significant Cloud Type: medium
11%
0.0 In
19:00

NW
NW

 2 / 4 mph 75 / 78°F 84% 1014 mb
Low level cloud: 4%
Mid level cloud: 73%
High level cloud: 100%
Most Significant Cloud Type: medium
87%
0.0 In
Mon 27
May		01:00

ENE
ENE

 6 / 13 mph 60 / 60°F 82% 1020 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: high
1%
0.0 In
07:00

W
W

 4 / 9 mph 67 / 67°F 96% 1012 mb
Low level cloud: 93%
Mid level cloud: 43%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
13:00

ESE
ESE

 4 / 9 mph 69 / 69°F 96% 1015 mb
Low level cloud: 99%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
19:00

SSW
SSW

 12 / 25 mph 80 / 85°F 82% 1013 mb
Low level cloud: 18%
Mid level cloud: 12%
High level cloud: 16%
Most Significant Cloud Type: low
23%
0.0 In
Tue 28
May		01:00

NNE
NNE

 6 / 13 mph 60 / 60°F 91% 1017 mb
Low level cloud: 7%
Mid level cloud: 32%
High level cloud: 0%
Most Significant Cloud Type: medium
50%
0.1 In
07:00

SSW
SSW

 11 / 22 mph 69 / 69°F 96% 1012 mb
Low level cloud: 99%
Mid level cloud: 13%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.3 In
13:00

N
N

 10 / 21 mph 72 / 76°F 49% 1019 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 89%
Most Significant Cloud Type: medium
6%
0.0 In
19:00

W
W

 7 / 14 mph 73 / 77°F 87% 1013 mb
Low level cloud: 36%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: low
44%
0.1 In
Wed 29
May		01:00

NNE
NNE

 6 / 14 mph 60 / 60°F 73% 1020 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 100%
Most Significant Cloud Type: medium
15%
0.0 In
07:00

NW
NW

 9 / 18 mph 62 / 62°F 84% 1017 mb
Low level cloud: 18%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
22%
0.0 In
13:00

NNE
NNE

 11 / 23 mph 72 / 76°F 49% 1019 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 5%
Most Significant Cloud Type: medium
46%
0.0 In
19:00

NNW
NNW

 10 / 21 mph 64 / 64°F 72% 1018 mb
Low level cloud: 18%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
33%
0.0 In
Thu 30
May		01:00

NNE
NNE

 9 / 18 mph 58 / 56°F 67% 1019 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 88%
Most Significant Cloud Type: medium
16%
0.0 In
07:00

NNW
NNW

 7 / 15 mph 56 / 55°F 80% 1021 mb
Low level cloud: 6%
Mid level cloud: 0%
High level cloud: 17%
Most Significant Cloud Type: low
7%
0.0 In
13:00

NE
NE

 9 / 18 mph 76 / 78°F 43% 1019 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: medium
24%
0.0 In
19:00

N
N

 6 / 13 mph 69 / 69°F 64% 1019 mb
Low level cloud: 5%
Mid level cloud: 7%
High level cloud: 100%
Most Significant Cloud Type: medium
24%
0.0 In
Fri 31
May		01:00

NNE
NNE

 6 / 12 mph 62 / 62°F 72% 1019 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
0.0 In
07:00

ESE
ESE

 3 / 6 mph 59 / 60°F 74% 1020 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
0.0 In
13:00

N
N

 7 / 15 mph 78 / 79°F 46% 1018 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: medium
44%
0.0 In
19:00

NW
NW

 5 / 10 mph 65 / 65°F 70% 1017 mb
Low level cloud: 0%
Mid level cloud: 72%
High level cloud: 100%
Most Significant Cloud Type: medium
76%
0.0 In
Sat 01
Jun		01:00

NW
NW

 5 / 11 mph 63 / 63°F 84% 1018 mb
Low level cloud: 0%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: medium
30%
0.1 In
07:00

NE
NE

 6 / 12 mph 57 / 56°F 92% 1018 mb
Low level cloud: 23%
Mid level cloud: 63%
High level cloud: 18%
Most Significant Cloud Type: low
47%
0.1 In
13:00

NNW
NNW

 9 / 19 mph 80 / 81°F 51% 1018 mb
Low level cloud: 8%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: low
13%
0.0 In
19:00

NE
NE

 3 / 6 mph 69 / 69°F 71% 1016 mb
Low level cloud: 7%
Mid level cloud: 31%
High level cloud: 7%
Most Significant Cloud Type: medium
51%
0.0 In
Sun 02
Jun		01:00

NW
NW

 5 / 10 mph 67 / 67°F 76% 1018 mb
Low level cloud: 0%
Mid level cloud: 30%
High level cloud: 100%
Most Significant Cloud Type: medium
34%
0.0 In
07:00

NW
NW

 2 / 3 mph 67 / 67°F 84% 1018 mb
Low level cloud: 10%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
15%
0.0 In
13:00

NW
NW

 4 / 9 mph 76 / 78°F 61% 1016 mb
Low level cloud: 0%
Mid level cloud: 31%
High level cloud: 7%
Most Significant Cloud Type: medium
31%
0.0 In
19:00

NNE
NNE

 6 / 12 mph 79 / 82°F 70% 1016 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
0.0 In
Mon 03
Jun		01:00

WSW
WSW

 5 / 10 mph 65 / 65°F 95% 1013 mb
Low level cloud: 3%
Mid level cloud: 28%
High level cloud: 100%
Most Significant Cloud Type: medium
40%
0.2 In
07:00

NNW
NNW

 2 / 4 mph 71 / 71°F 71% 1019 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 8%
Most Significant Cloud Type: medium
1%
0.0 In
13:00

SSW
SSW

 9 / 18 mph 74 / 77°F 72% 1011 mb
Low level cloud: 73%
Mid level cloud: 33%
High level cloud: 94%
Most Significant Cloud Type: low
95%
0.1 In
19:00

NE
NE

 3 / 7 mph 79 / 81°F 61% 1014 mb
Low level cloud: 0%
Mid level cloud: 58%
High level cloud: 32%
Most Significant Cloud Type: medium
59%
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