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Ralls County Climate

JanFebMarAprMayJunJulAugSepOctNovDec55.0°AVG °F

Avg Annual Temp

55.0°F

Annual Precip

40.1"

Annual Snowfall

Extreme Heat Days

37

days >= 90°F/yr

Monthly Temperature

54.4°F avgJFMAMJJASOND

Precipitation Calendar

Dry
Wet
1.9"
2.1"
2.7"
4.1"
4.9"
4.7"
4.2"
3.8"
3.9"
3.2"
2.6"
2.0"
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Growing Season & Gardening

USDA Hardiness Zone

6a

Minimum winter temperature range for plant survival

Growing Degree Days

4,121

Excellent for heat-loving crops

Last spring frost (32°F): 04/04
First fall frost (32°F): 11/04

Seasonal Overview

Comfort ZoneSpring43°65°11.7"Summer75°79°12.7"Fall45°69°9.7"Winter29°34°6.0"20°40°60°80°100°

National Comparison

Warmer than 51% of US counties
Wetter than 46% of US counties
More seasonal variation than 81% of US counties

7-Day Outlook

Forecast

Current Conditions

Air Quality

Safety

Weather Alerts

Climate Advisory: Ralls County

Climate Verdict

Ralls County has a mild, with an average annual temperature of 55.0°F, moderately wet with 40.1 inches of annual precipitation, occasional hot days — 36.5 per year above 90°F. This climate profile shapes everything from energy costs to outdoor recreation opportunities.

Seasonal Breakdown

Winters are cold, with January averaging 28.7°F. summers are warm — July averages 78.6°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

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

Climate Profile

About Ralls County Weather

Typical Heartfelt Midwestern Weather

Ralls County’s 55.0°F average annual temperature sits just above the national median. This indicates a climate with robust seasonal shifts and standard precipitation levels.

Aligning Closely with Missouri Norms

Ralls is nearly a perfect match for Missouri’s state average temperature of 54.9°F. Its annual precipitation of 40.1 inches is slightly below the state average, making it a relatively dry part of the state.

Stable Conditions in Northeast Missouri

Ralls is slightly warmer than its neighbor Pike County and experiences more extreme heat days. It shares the same humid continental patterns that define the Mississippi River valley region.

Intense Summer Heat Peaks

The county faces a hot summer with 37 days of temperatures over 90°F and a July average of 78.6°F. Winters are cold but manageable, with a December to February average of 31.8°F.

Prepare for Long Summer Stretches

With 37 extreme heat days, residents should ensure their cooling systems are serviced before June. While snowfall data is limited, winter temperatures frequently drop below freezing, requiring home winterization.

Frequently Asked Questions

What is the average temperature in Ralls County?
The average annual temperature in Ralls County, MO is 55.0°F, based on NOAA 30-year climate normals (1991-2020).
How much rain does Ralls County get?
Ralls County receives an average of 40.1 inches of precipitation per year, including both rain and meltwater from snow. This is based on NOAA 30-year climate normals.
How hot does Ralls County get in summer?
The average summer temperature (June-August) in Ralls County is 76.8°F. The county experiences an average of 37 days per year above 90°F.
How cold are winters in Ralls County?
The average winter temperature (December-February) in Ralls County is 31.8°F. January, typically the coldest month, averages 28.7°F.

Track your own weather in Ralls 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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