Weather

Conditions: Light Rain
Temp: 49°
Wind: North 17
Pressure: 0
Dewpoint: 46°
Relative Humidity: 90

Seven Day Forecast

Cloudy with showers today. High near 58* with a northeast wind at 10-25 mph. Tonight showers ending. Low around 48* the wind north at 10-25 mph. Turning partly cloudy tomorrow with a high near 70* the wind north at 10-20 mph. Scattered Thunderstorms expected this weekend.

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Weather Key:

–  indicates negative numbers
R  indicates record was set or tied
MM  indicates data missing
T  indicates trace amount

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December 20, 2012

Temperature

	Observed	Time	Record	Year	Normal	Normal Departure	Last Year
High	19°	1224 AM	46°	1890	21°	-2°	42°
Low	-4°	1115 PM	-28°	1916	4°	-8°	14°
Average	8°				12°	-4°	28°

Precipitation

	Observed	Record	Year	Normal	Normal Departure	Last Year
Precipitation	T	0.57	1967	0.02	-0.02	0.00
Month to Date	0.19	0.52			-0.33	0.03
SINCE DEC 1	0.19	0.52			-0.33	0.03
Since Jan. 1	14.34	22.30			-7.96	23.62

Snow

	Observed	Record	Year	Normal	Normal Departure	Last Year
Snowfall		5.5	2010	0.4	0.4
Month to Date	2.5			6.9	4.4
SINCE DEC 1	2.5			6.9	4.4
SINCE JUL 1	10.9			5.5	4.6
Snow Depth

Degree Days Heating

	Observed	Normal	Normal Departure	Last Year
Heating	57	53	4	37
Month to Date	882	985	-103	830
SINCE DEC 1	882	985	-103	830
SINCE JUL 1	2791	2947	-156	2376

Degree Days Cooling

	Observed	Normal	Normal Departure	Last Year
Cooling	0	0	0	0
Month to Date	0	0	0	0
SINCE DEC 1	0	0	0	0
SINCE JAN 1	795	551	244	694

Wind

	Observed
Highest Speed	3
Highest Direction	3
Highest Gust Speed	3
Highest Guest Direction	3

Relative Humidity

	Observed	Time
Highest	3	3
Lowest	3	3
Average	3

Forecast

Skycover	POSSIBLE SUNSHINE: MM AVERAGE SKY COVER: 0.6
Conditions	LIGHT SNOW HAZE

Climate Normals for Today

	Average	Record	Year
Temperature High	20°	42°	1979
Temperature Low	4°	-31°	1916

December 21 2012
Sunrise	810 AM CST
Sunset	441 PM CST
December 22 2012
Sunrise	810 AM CST
Sunset	442 PM CST

Source: National Weather Service Climate Report

Wind (mph)	Temperature (Fahrenheit)
0	35°	30°	25°	20°	15°	10°	5°	0°	-5°	-10°	-15°	-20°	-25°	-30°	-35°	-40°	-45°
5	31	25	9	13	7	-1	-5	-11	-16	-22	-28	-34	-40	-46	-52	-57	-72
10	27	21	15	9	3	-4	-10	-16	-22	-28	-35	-41	-47	-53	-59	-66	-77
15	25	19	13	6	0	-7	-13	-19	-26	-35	-39	-45	-51	-58	-64	-71	-81
20	24	17	11	4	-2	-9	-15	-22	-29	-35	-37	-44	-55	-61	-68	-74	-84
25	23	16	9	3	-4	-11	-17	-24	-31	-37	-44	-51	-58	-64	-71	-78	-87
30	22	15	8	1	-5	-12	-19	-26	-33	-39	-46	-53	-60	-67	-73	-80	-89
35	21	14	7	0	-7	-14	-21	-28	-34	-41	-48	-55	-62	-69	-76	-82	-91
40	20	13	6	-1	-8	-15	-22	-29	-36	-43	-50	-57	-64	-71	-78	-84	-93
45	19	12	5	-2	-9	-16	-23	-30	-37	-44	-51	-58	-65	-72	-79	-86	-93
50	19	12	4	-3	-10	-17	-24	-31	-38	-45	-52	-60	-67	-74	-81	-89	-95
55	18	11	4	-3	-11	-18	-25	-32	-39	-46	-54	-61	-68	-75	-82	-89	-97
60	17	10	3	-4	-11	-19	-26	-33	-40	-48	-55	-62	-69	-76	-84	-91	-98

	Increasing Danger (Frostbite in 30 min.)
	Heightened Danger (Frostbite in 10 min.)
	Great Danger (Frostbite in 5 min.)

Differences Between the new and old systems

Wind speed is now calculated for 5 feet off the ground. Wind speed was previously based on observations at 33 feet.
The calm wind threshold was lowered to 3mph.
A consistent standard for skin tissue resistance is now in use.
Measurements are based on how wind affects the human face, typically the most exposed portion of the body.
The table incorporates the theory that heat is lost from the body depending on its surroundings
The sun's impact is not factored into the wind chill temperature formula.