Wind Chill Chart

Wind (mph)	Temperature (Celcius)
Wind (mph)	10	5	0	-5	-10	-15	-20	-25
10	5	-1	-7	-13	-19	-25	-31	-37
20	0	-6	-13	-20	-27	-34	-41	-48
30	-1	-9	-16	-24	-31	-39	-46	-54
40	-2	-10	-18	-26	-34	-41	-49	-57
50	-3	-11	-19	-27	-35	-43	-50	-58
60	-3	-11	-19	-27	-35	-43	-50	-58
70	-3	-10	-18	-26	-34	-42	-50	-57
80	-2	-10	-17	-25	-33	-40	-48	-56
90	-1	-9	-16	-24	-31	-39	-46	-54

**Wind Chill Chart - °F, wind in knots**
Wind (knt)	Temperature (°F)
Wind (knt)	40	35	30	25	20	15	10	5	0	-5	-10	-15	-20	-25	-30
5	36	30	25	19	14	8	3	-2	-8	-13	-19	-24	-30	-35	-40
10	26	20	13	7	1	-6	-12	-18	-25	-31	-37	-44	-50	-56	-63
15	20	13	6	-1	-7	-14	-21	-28	-35	-42	-49	-56	-63	-70	-77
20	16	9	2	-6	-13	-20	-28	-35	-42	-50	-57	-64	-72	-79	-86
25	13	6	-2	-9	-17	-25	-32	-40	-47	-55	-63	-70	-78	-85	-93
30	11	4	-4	-12	-20	-28	-35	-43	-51	-59	-66	-74	-82	-90	-98
35	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

**Wind Chill Chart - F, wind in mph**
Wind (mph)	Temperature (° F)
Wind (mph)	35	30	25	20	15	10	5	0	-5	-10	-15	-20	-25
5	32	27	22	16	11	6	0	-5	-10	-15	-21	-26	-31
10	22	16	10	3	-3	-9	-15	-22	-27	-34	-40	-46	-52
15	16	9	2	-5	-11	-18	-25	-31	-38	-45	-51	-58	-65
20	12	4	-3	-10	-17	-24	-31	-39	-46	-53	-60	-67	-74
25	8	1	-7	-15	-22	-29	-36	-44	-51	-59	-66	-74	-81
30	6	-2	-10	-18	-25	-33	-41	-49	-56	-64	-71	-79	-86
35	4	-4	-12	-20	-27	-35	-43	-52	-58	-67	-74	-82	-92
40	3	-5	-13	-21	-29	-37	-45	-53	-60	-69	-76	-84	-92
Wind speeds above 40 mph have little additional chilling affect

In using the table above, values of wind chill below -10° F are considered bitterly cold. Values of wind chill below -20° F are extremely cold -- human flesh will begin to freeze within one minute!

If you would like to calculate the wind chill index for combinations of temperature and wind other than those given in the table above, you can use the formula:

WC = 91.4 - (0.474677 - 0.020425 * V + 0.303107 * SQRT(V)) * (91.4 - T)

where: WC = wind chill index
V = wind speed (mph)
T = temperature (° F)

WC = 91.4 - (0.474677 - 0.020425 * V + 0.303107 * SQRT(V)) * (91.4 - T)
where:		WC = wind chill index V = wind speed (mph) T = temperature (° F)

To use the chart, find the approximate temperature on the top of the chart. Read down until you are opposite the appropriate wind speed. The number which appears at the intersection of the temperature and wind speed is the wind chill index.

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