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Cooper County Climate

JanFebMarAprMayJunJulAugSepOctNovDec55.7°AVG °F

Avg Annual Temp

55.7°F

Annual Precip

41.0"

Annual Snowfall

13.3"

Extreme Heat Days

50

days >= 90°F/yr

Monthly Temperature

54.4°F avgJFMAMJJASOND

Precipitation Calendar

Dry
Wet= snowfall
1.8"
2.1"
3.2"
4.3"
5.0"
4.5"
4.4"
4.2"
3.9"
3.1"
2.8"
1.6"
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Growing Season & Gardening

USDA Hardiness Zone

6b

Minimum winter temperature range for plant survival

Growing Degree Days

4,238

Excellent for heat-loving crops

Last spring frost (32°F): 04/05
First fall frost (32°F): 10/29

Seasonal Overview

Comfort ZoneSpring45°66°12.6"Summer75°79°13.1"Fall45°69°9.8"Winter30°35°5.5"20°40°60°80°100°

National Comparison

Warmer than 55% of US counties
Wetter than 48% of US counties
More seasonal variation than 81% of US counties

7-Day Outlook

Forecast

Current Conditions

Air Quality

Safety

Weather Alerts

Climate Advisory: Cooper County

Climate Verdict

Cooper County has a mild, with an average annual temperature of 55.7°F, moderately wet with 41.0 inches of annual precipitation, occasional hot days — 49.5 per year above 90°F, light snow averaging 13.3 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.

Seasonal Breakdown

Winters are cold, with January averaging 29.6°F. summers are warm — July averages 79.3°F. The 50°F seasonal variation provides noticeable but manageable change.

Outdoor & Gardening Guidance

The moderate temperatures support hiking, cycling, and camping comfortably in spring, summer, and fall.

Regional Context

Cooper County closely matches the Missouri statewide average temperature of 54.9°F, it is somewhat drier than average for Missouri.

Climate Profile

About Cooper County Weather

Warm summers and snowy winters

Cooper County’s 55.7°F annual average sits comfortably above the national median. This climate is characterized by intense summers and snowy, distinct winters.

Above the Missouri average

At 55.7°F, Cooper is roughly one degree warmer than the Missouri state average of 54.9°F. It ranks as one of the warmer counties in the central part of the state.

More extreme heat than neighbors

Cooper faces more extreme heat than its neighbors, with 50 days reaching 90°F or higher. It also sees 13.3 inches of snow, which is higher than nearby Cole County.

A summer of intense heat

Summers are intense, featuring a July average of 79.3°F and frequent heat spikes. Winters average 32.8°F, creating conditions for the 13.3 inches of annual snowfall.

Plan for 50 hot days

Prepare for a long cooling season with 50 days of extreme heat impacting energy bills. Residents also need reliable snow removal equipment to manage the double-digit winter snowfall.

Frequently Asked Questions

What is the average temperature in Cooper County?
The average annual temperature in Cooper County, MO is 55.7°F, based on NOAA 30-year climate normals (1991-2020).
How much rain does Cooper County get?
Cooper County receives an average of 41.0 inches of precipitation per year, including both rain and meltwater from snow. This is based on NOAA 30-year climate normals.
Does it snow in Cooper County?
Yes, Cooper County receives an average of 13.3 inches of snowfall per year according to NOAA climate normals.
How hot does Cooper County get in summer?
The average summer temperature (June-August) in Cooper County is 77.3°F. The county experiences an average of 50 days per year above 90°F.
How cold are winters in Cooper County?
The average winter temperature (December-February) in Cooper County is 32.8°F. January, typically the coldest month, averages 29.6°F.

Track your own weather in Cooper County

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Data sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.

Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.

By Evan Brooks, Data EditorUpdated Reviewed by Evan Brooks, Data Editor
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