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Saline County Climate

JanFebMarAprMayJunJulAugSepOctNovDec54.1°AVG °F

Avg Annual Temp

54.1°F

Annual Precip

42.2"

Annual Snowfall

10.1"

Extreme Heat Days

36

days >= 90°F/yr

Monthly Temperature

54.4°F avgJFMAMJJASOND

Precipitation Calendar

Dry
Wet= snowfall
1.5"
1.9"
3.0"
4.4"
5.5"
4.8"
5.1"
4.1"
4.0"
3.3"
2.6"
2.1"
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

3,906

Supports most vegetables & fruits

Last spring frost (32°F): 04/17
First fall frost (32°F): 10/24

Seasonal Overview

Comfort ZoneSpring43°65°12.8"Summer74°78°14.0"Fall43°68°9.9"Winter28°33°5.5"20°40°60°80°100°

National Comparison

Warmer than 48% of US counties
Wetter than 51% of US counties
More seasonal variation than 81% of US counties

7-Day Outlook

Forecast

Current Conditions

Air Quality

Safety

Weather Alerts

Climate Advisory: Saline County

Climate Verdict

Saline County has a mild, with an average annual temperature of 54.1°F, moderately wet with 42.2 inches of annual precipitation, occasional hot days — 35.65 per year above 90°F, light snow averaging 10.1 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.

Seasonal Breakdown

Winters are cold, with January averaging 27.9°F. summers are warm — July averages 77.6°F. The 50°F seasonal variation provides noticeable but manageable change.

Outdoor & Gardening Guidance

Growing season and gardening data is currently limited for Saline County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.

Regional Context

Saline County closely matches the Missouri statewide average temperature of 54.9°F.

Climate Profile

About Saline County Weather

Saline County mirrors the US climate average

The annual average temperature of 54.1°F is almost exactly in line with the national median. This reflects a balanced continental climate with four distinct and predictable seasons.

Positioned right at the Missouri state average

Saline County’s 54.1°F average is very close to the state mean of 54.9°F. Its 42.2 inches of annual precipitation is also within a few points of the 43.8-inch statewide average.

Consistent weather across the central plains

The county's climate data is nearly identical to Randolph County, which sits just to its northeast. Both regions deal with approximately 10 to 15 inches of snow and similar summer humidity levels.

Strong summer heat with moderate winter snow

The county sees 36 days above 90°F annually, typically concentrated in a hot July where averages hit 77.6°F. Winter brings a manageable 10.1 inches of snow and a January average of 27.9°F.

Prepare for significant seasonal transitions

The ten inches of annual snow requires basic winter gear, while the 36 heat days necessitate a reliable cooling system. Residents should plan for a wide range of outdoor activities given the temperate 54.1°F annual average.

Frequently Asked Questions

What is the average temperature in Saline County?
The average annual temperature in Saline County, MO is 54.1°F, based on NOAA 30-year climate normals (1991-2020).
How much rain does Saline County get?
Saline County receives an average of 42.2 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 Saline County?
Yes, Saline County receives an average of 10.1 inches of snowfall per year according to NOAA climate normals.
How hot does Saline County get in summer?
The average summer temperature (June-August) in Saline County is 75.6°F. The county experiences an average of 36 days per year above 90°F.
How cold are winters in Saline County?
The average winter temperature (December-February) in Saline County is 31.2°F. January, typically the coldest month, averages 27.9°F.

Track your own weather in Saline 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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