Severe Thunderstorms Possible in the South Central U.S.; Wildfire Smoke Impacts in the North Central U.S.

Scattered severe thunderstorms may bring large hail and isolated damaging winds this weekend over parts of the south central U.S. Smoke from Canadian wildfires will bring air quality issues to parts of the north central U.S. this weekend. Air Quality Alerts have been issued. Read More >

McCook Halloween Climatology

Period of Record 112 Years: 1909-2023

Missing: 1910, 1917 and 1971

Temperature Information

*Record High*	88°F (1968)
*Record Low*	14°F (1991)
*Coldest High Temperature*	21°F (1991)
*Warmest Low Temperature*	50°F (1933)
Average High (Period of Record)	60°F
Average Low (Period of Record)	31.4°F
30 year Normal High (1992-2023)	61.6°F
30 year Normal Low (1992-2023)	32.3°F

(Click image for a larger version)

Distribution of High Temperatures in 10 Degree Fahrenheit Ranges

(Click image for a larger version)

Distribution of Low Temperatures in 10 Degree Fahrenheit Ranges

(Click image for a larger version)

Precipitation Information

*Greatest Precipitation*	1.30” (1920)
*Greatest Snowfall*	4.0” (1991)
*Precipitation*	17 of 112 years 13.3%
Measurable Precipitation (more than a Trace)	12 of 112 years 10.7%
*Snowfall*	6 of 112 years 5.3%
Measurable Snowfall (more than a Trace)	5 of 112 years 4.4%
*Greatest Snow Depth*	5” (2002)
“White” Halloween (Snow Depth of 1” or more)	5 of 112 years 4.4%