The effect that wind has on our perception of cold is called the wind chill factor. The greater the wind speed, the faster we lose body heat. Wind chill can make a fairly moderate winter day equivalent to a much colder one - sometimes dangerously so.
Wind chill does not affect objects and does not lower the actual temperature. It only describes how a human being would feel in the wind at the ambient temperature.
Wind
Speed
Temperature (in °F)
(MPH)
40
35
30
25
20
15
10
5
0
-5
-10
-15
-20
-25
-30
1 - 6
36
30
25
19
14
8
3
-2
-8
-13
-19
-24
-29
-35
-40
7 - 12
26
20
13
7
1
-6
-12
-18
-25
-31
-37
-44
-50
-56
-63
13 - 17
20
13
6
-1
-7
-14
-21
-28
-35
-42
-49
-56
-63
-70
-77
18 - 23
16
9
2
-6
-13
-20
-28
-35
-42
-50
-57
-64
-72
-79
-86
24 - 29
13
6
-2
-9
-17
-25
-32
-40
-47
-55
-63
-70
-78
-85
-93
30 - 35
11
4
-4
-12
-20
-28
-35
-43
-51
-59
-66
-74
-82
-90
-98
36 - 40
10
2
-6
-14
-22
-30
-37
-45
-53
-61
-69
-77
-85
-93
-101
> 40
9
1
-7
-15
-23
-31
-39
-47
-55
-63
-71
-79
-87
-95
-103
Unpleasant
Frostbite Possible
Dangerous Frostbite Likely
Extremely
Dangerous - Flesh will freeze in 30 seconds!
