Polk County Climate
Polk County, Missouri
Avg Annual Temp
56.0°F
Annual Precip
45.5"
Annual Snowfall
—
Extreme Heat Days
41.1
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Polk County Weather
Southern Missouri Warmth Above Median
Polk County averages 56.0°F annually, making it warmer than the national median. This southern Missouri location brings extended summer conditions and more annual rainfall than the US average.
Warm and Wet Southwest Missouri Peaks
Polk is warmer and wetter than the average Missouri county, with 45.5 inches of rain per year. It experiences 41 days of extreme heat, significantly higher than counties in the northern half of the state.
A Warm Foothold in the Southwest
Polk’s 41 extreme heat days align closely with the high-heat patterns seen in neighboring Phelps County. Its winters are milder than those in central counties like Pettis, with a winter average of 35.0°F.
Lengthy Summers and Mild Winters
The county faces 41 days of temperatures over 90°F and a July average of 78.0°F. While specific snowfall data is currently limited, winter averages remain relatively mild at 35.0°F.
Heavy Precipitation and Heat Readiness
Property owners should ensure basement waterproofing is sound to handle the 45.5 inches of annual rain. With 41 days of extreme heat, outdoor activities require careful planning during the peak afternoon hours.
Frequently Asked Questions
What is the average temperature in Polk County?
How much rain does Polk County get?
How hot does Polk County get in summer?
How cold are winters in Polk County?
Track your own weather in Polk County
Ambient Weather personal weather stations give you hyperlocal climate data.
Sponsored
Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.