Sirinet Weather Links

Wind Chill Factor Chart

To figure the wind chill factor, read right and down from the calm-air line. For example, a temperature of 20º F combined with a 20 mph wind has an equivalent cooling effect of 4º F.

Wind Chill Index
Wind (MPH)	Temperature (Degrees Fahrenheit)
Calm	35	30	25	20	15	10	5	0	-5	-10	-15	-20
5	31	25	19	13	7	1	-5	-11	-16	-22	-28	-34
10	27	21	15	9	3	-4	-10	-16	-22	-28	-35	-41
15	25	19	13	6	0	-7	-13	-19	-26	-32	-39	-45
20	24	17	11	4	-2	-9	-15	-22	-29	-35	-42	-48
25	23	16	9	3	-4	-11	-17	-24	-31	-37	-44	-51
30	22	15	8	1	-5	-12	-19	-26	-33	-39	-46	-53
35	21	14	7	0	-7	-14	-21	-27	-34	-41	-48	-55
40	20	13	6	-1	-8	-15	-22	-29	-36	-43	-50	-57

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