Franklin County Climate
Franklin County, Iowa
Avg Annual Temp
46.6°F
Annual Precip
36.5"
Annual Snowfall
30.0"
Extreme Heat Days
12.2
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Franklin County Weather
A brisk northern interior climate
Franklin County averages 46.6°F annually, placing it firmly in the cooler half of the United States. Its 36.5 inches of precipitation closely aligns with the national median.
Cooler and drier than southern Iowa
The county's 46.6°F average temperature is 1.4 degrees lower than the Iowa state average. Its annual precipitation of 36.5 inches is nearly identical to the state's 36.1-inch norm.
Warmer than neighbors to the west
Franklin County’s 46.6°F average is slightly warmer than Hamilton County's 46.1°F. It also receives less snow than Floyd County, totaling 30.0 inches compared to Floyd's 37.5.
Balanced snowfall and moderate heat
Winters feature a January average of 16.7°F and roughly 30.0 inches of snow. Summer brings more warmth than eastern neighbors, with 12 days annually reaching 90°F or higher.
Insulate for sub-freezing winters
With a winter average of 20.2°F, proper home insulation is vital for energy savings. Residents should also prepare for a dozen days of extreme summer heat with serviced cooling systems.
Frequently Asked Questions
What is the average temperature in Franklin County?
How much rain does Franklin County get?
Does it snow in Franklin County?
How hot does Franklin County get in summer?
How cold are winters in Franklin County?
Track your own weather in Franklin 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.