Putnam County Climate
Putnam County, Missouri
Avg Annual Temp
50.9°F
Annual Precip
41.9"
Annual Snowfall
28.7"
Extreme Heat Days
19.6
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Putnam County Weather
Cooler Northern Climate Below National Median
Putnam County averages 50.9°F annually, making it one of the coolest counties in the region and below the national median. This northern location results in a significantly colder thermal profile than southern Missouri.
Missouri's Northern Cold Spot
Putnam is much colder than the state average of 54.9°F and receives 28.7 inches of snow—more than double the state norm. It also sees far fewer extreme heat days, with only 20 per year compared to the 40+ seen in the south.
Snow Capital of the Region
Compared to Platte County, Putnam is significantly colder and experiences over 10 inches more snowfall annually. It is the coolest county in this group, defined by its 23.5°F January average.
Severe Winters and Mild Summers
Winter is the dominant season here, bringing 28.7 inches of snow and a frosty 26.7°F winter average. Summers are pleasant and mild, with only 20 days of 90°F+ temperatures.
Serious Winter Gear is Required
Heavy-duty snow removal equipment and high-quality winter insulation are critical for the 28.7 inches of annual snow. Residents enjoy lower cooling costs in summer but must budget for significant heating in the winter.
Frequently Asked Questions
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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.