Black Hawk County Climate
Black Hawk County, Iowa
Avg Annual Temp
49.0°F
Annual Precip
36.3"
Annual Snowfall
39.1"
Extreme Heat Days
15.3
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Black Hawk County Weather
Higher Precipitation than National Median
Black Hawk County maintains a 49.0°F average, which is warmer than northern Iowa but below the national median. It receives a typical 36.3 inches of annual precipitation.
Warmer than the State Benchmark
It is one degree warmer than the Iowa state average of 48.0°F. This puts it in the warmer tier of the state's northern-central counties.
Heavy Snowfall Compared to the South
It is notably snowier than southern neighbors, recording 39.1 inches of snow. Its temperature profile is very similar to Adair County.
Significant Snow and Mid-Summer Heat
Snowfall is a major factor here, averaging nearly 40 inches per year. Summer includes 15 days of extreme heat, with July temperatures peaking at 74.5°F.
Invest in High-Capacity Snow Gear
High-capacity snow removal equipment is a necessity for the heavy 39.1-inch average snowfall. Expect significant heating bills during the 22.9°F winter months.
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.