Heavy Rain in the Southern Appalachians; Fire Weather and Heat in the West; Monitoring Tropical Storm Erin

Heavy to excessive rainfall over the southern Appalachians may bring areas of flooding today. Gusty winds and low relative humidity will bring critical fire weather conditions to parts of the Great Basin and northern Rockies today and Thursday. Hot to extremely hot temperatures are in place through today across parts of the western U.S. Read More >

McCook Thanksgiving Day Climatology

Period of Record 103 Years: 1909-2011

Missing: 1910, 1918, 1920, 1967, 1968, 1971 and 1978

Temperature Information

*Record High*	72°F (1932 & 1960)
*Record Low*	-6°F (1952)
*Coldest High Temperature*	5°F (1919)
*Warmest Low Temperature*	46°F (1963)
Average High (Period of Record)	49°F
Average Low (Period of Record)	22°F
30 year Normal High (1981-2010)	44°F
30 year Normal Low (1981-2010)	19°F
Running 30 year Normal High (1982-2011)	45°F
Running 30 year Normal Low (1982-2011)	19°F

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Distribution of High Temperatures in 10 Degree Fahrenheit Ranges

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Distribution of Low Temperatures in 10 Degree Fahrenheit Ranges

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Precipitation Information

*Greatest Precipitation*	0.85” (1928)
*Greatest Snowfall*	8.5” (1928)
*Precipitation*	16 of 96 years 16.7%
Measurable Precipitation (more than a Trace)	7 of 96 years 7.3%
*Snowfall*	8 of 96 years 8.3%
Measurable Snowfall (more than a Trace)	5 of 96 years 5.2%
*Greatest Snow Depth*	19” (1975)
“White” Thanksgiving (Snow Depth of 1” or more)	10 of 96 years 10.4%