see: GRAPH

& FORMULA

Wind Chill Temperature (WCT) is the temperature it "feels like" outdoors and is based on the rate of heat loss from exposed skin caused by the combined effects of wind and cold. As the wind increases, the body is cooled at a faster rate causing the skin temperature to drop; for example, a temperature of 0F and a wind speed of 15 mph will produce a wind chill temperature of -19F. In 2001, National Weather Service implemented an updated WCT index  [NH07] .

Note: Wind Chill Temperature is only defined for temperatures at or below 50F and wind speeds above 3 mph. Bright sunshine may increase the wind chill temperature by 10 to 18F. In the table below, WCT values are rounded to the nearest degree Fahrenheit.

 
 

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oC & km/h

  

  

  

  

COLD

  

COLDER

  

 VERY COLD

  

BITTER COLD

  

EXTREME COLD

  

FRIGIDLY COLD

  

  

 

wind chill temperatures  /  0F
wind speed  /  mph
3 4 5 6 8 10 12 14 15 16 18 20 25 30 35 40 45 50
air temperature / degF 40 38 37 36 36 35 34 33 32 32 32 31 30 29 28 28 27 26 26 40 air temperature / degF
38 36 35 34 33 32 31 30 30 29 29 28 28 27 26 25 24 23 23 38
36 34 33 32 31 30 29 28 27 27 26 26 25 24 23 22 21 21 20 36
34 32 30 29 29 27 26 25 25 24 24 23 23 21 20 19 19 18 17 34
32 29 28 27 26 25 24 23 22 22 21 21 20 19 18 17 16 15 14 32
30 27 26 25 24 22 21 20 19 19 19 18 17 16 15 14 13 12 12 30
28 25 23 22 21 20 19 18 17 16 16 15 15 13 12 11 10 9 9 28
26 23 21 20 19 18 16 15 14 14 14 13 12 11 9 8 7 7 6 26
24 20 19 18 17 15 14 13 12 11 11 10 9 8 7 6 5 4 3 24
22 18 17 15 14 13 11 10 9 9 8 8 7 5 4 3 2 1 0 22
20 16 14 13 12 10 9 8 7 6 6 5 4 3 1 0 -1 -2 -3 20
18 13 12 11 10 8 6 5 4 4 3 2 2 0 -1 -3 -4 -5 -6 18
16 11 10 8 7 5 4 3 2 1 1 0 -1 -3 -4 -5 -6 -7 -8 16
14 9 7 6 5 3 1 0 -1 -1 -2 -3 -4 -5 -7 -8 -9 -10 -11 14
12 7 5 4 2 0 -1 -2 -4 -4 -5 -5 -6 -8 -10 -11 -12 -13 -14 12
10 4 3 1 0 -2 -4 -5 -6 -7 -7 -8 -9 -11 -12 -14 -15 -16 -17 10
8 2 0 -1 -2 -4 -6 -7 -9 -9 -10 -11 -12 -13 -15 -16 -18 -19 -20 8
6 0 -2 -3 -5 -7 -8 -10 -11 -12 -12 -13 -14 -16 -18 -19 -20 -22 -23 6
4 -2 -4 -6 -7 -9 -11 -12 -14 -14 -15 -16 -17 -19 -20 -22 -23 -24 -25 4
2 -5 -7 -8 -9 -12 -13 -15 -16 -17 -17 -18 -19 -21 -23 -25 -26 -27 -28 2
0 -7 -9 -11 -12 -14 -16 -17 -19 -19 -20 -21 -22 -24 -26 -27 -29 -30 -31 0
-2 -9 -11 -13 -14 -17 -18 -20 -21 -22 -23 -24 -25 -27 -29 -30 -32 -33 -34 -2
-4 -11 -14 -15 -17 -19 -21 -22 -24 -25 -25 -26 -27 -29 -31 -33 -34 -36 -37 -4
-6 -14 -16 -18 -19 -21 -23 -25 -26 -27 -28 -29 -30 -32 -34 -36 -37 -38 -40 -6
-8 -16 -18 -20 -21 -24 -26 -28 -29 -30 -30 -31 -32 -35 -37 -38 -40 -41 -42 -8
-10 -18 -20 -22 -24 -26 -28 -30 -32 -32 -33 -34 -35 -37 -39 -41 -43 -44 -45 -10
-12 -20 -23 -25 -26 -29 -31 -33 -34 -35 -35 -37 -38 -40 -42 -44 -45 -47 -48 -12
-14 -23 -25 -27 -29 -31 -33 -35 -37 -37 -38 -39 -40 -43 -45 -47 -48 -50 -51 -14
-16 -25 -27 -29 -31 -34 -36 -38 -39 -40 -41 -42 -43 -45 -48 -49 -51 -53 -54 -16
-18 -27 -30 -32 -33 -36 -38 -40 -42 -42 -43 -44 -46 -48 -50 -52 -54 -55 -57 -18
-20 -30 -32 -34 -36 -38 -41 -43 -44 -45 -46 -47 -48 -51 -53 -55 -57 -58 -60 -20
-25 -35 -38 -40 -42 -45 -47 -49 -51 -51 -52 -54 -55 -58 -60 -62 -64 -65 -67 -25
-30 -41 -44 -46 -48 -51 -53 -55 -57 -58 -59 -60 -61 -64 -67 -69 -71 -72 -74 -30
-35 -46 -49 -52 -54 -57 -59 -61 -63 -64 -65 -67 -68 -71 -73 -76 -78 -79 -81 -35
-40 -52 -55 -57 -60 -63 -66 -68 -70 -71 -71 -73 -74 -78 -80 -82 -84 -86 -88 -40
3 4 5 6 8 10 12 14 15 16 18 20 25 30 35 40 45 50
wind speed  /  mph
 
   

COLD: generally unpleasant; COLDER: unpleasant; VERY COLD: very unpleasant, frostbite possible < 30 min, exposed skin can freeze within 5 min; BITTER COLD: frostbites times < 10 min, exposed skin can freeze within 3 min; EXTREMELY COLD: frostbites likely < 5 min, exposed skin can freeze within 1 min, outdoor activity becomes dangerous; FRIGIDLY COLD: exposed skin can freeze in 30 seconds.

 
   
UPDATED : 2005-04-16 WEBSITE  EDITOR : Krešimir J. Adamić