Allen County Climate
Allen County, Ohio
Avg Annual Temp
51.2°F
Annual Precip
38.5"
Annual Snowfall
18.5"
Extreme Heat Days
13.3
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Allen County Weather
Standard Midwestern Climate Trends
Allen County maintains an average annual temperature of 51.2°F, placing it just below the national median for temperate zones. The area experiences a classic four-season humid continental climate.
Mirroring the Ohio Average
At 51.2°F, Allen County sits remarkably close to the Ohio state average of 51.5°F. It represents the typical thermal experience for residents in the western part of the state.
Drier Than the Southern Border
The county records 38.5 inches of annual precipitation, which is drier than the 41.2-inch state average. It receives less snow (18.5 inches) than its neighbors closer to the Lake Erie snowbelt.
Hot Summers and Brisk Winters
Summers reach an average of 71.8°F, including 13 days where temperatures climb above 90°F. Winters drop to a 29.3°F average, accompanied by 18.5 inches of snow.
Balance Cooling and Heating Needs
Homeowners should service their AC units early to handle the 13 extreme heat days each year. Reliable insulation is equally important for the 26.6°F January average.
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.