Pottawattamie County Climate
Pottawattamie County, Iowa
Avg Annual Temp
49.4°F
Annual Precip
35.3"
Annual Snowfall
27.6"
Extreme Heat Days
19.7
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Pottawattamie County Weather
Mild Temperatures with Standard Precipitation
Pottawattamie County averages 49.4°F annually, slightly below the national median. The 35.3 inches of annual precipitation reflect a typical continental climate with moisture-rich summers.
Warming Above the Iowa State Average
At 49.4°F, this county is 1.4 degrees warmer than the Iowa state average of 48.0°F. Its annual precipitation of 35.3 inches sits just below the statewide average of 36.1 inches.
Snowier and Cooler Than Southern Page
Pottawattamie is cooler than Page County to its south, which averages 51.0°F. However, Pottawattamie receives 3 more inches of snow annually, making for a slightly more rigorous winter.
Steamy Summers and Moderate Winter Cold
The county experiences 20 days of extreme heat annually, with July temperatures averaging 74.4°F. Winter is characterized by 27.6 inches of snow and a 20.9°F January average.
Expect Variable Winter and Summer Peaks
HVAC systems must be prepared for both the 20 days of extreme heat and the 24.1°F winter average. Proper attic ventilation is recommended to manage the consistent summer humidity.
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.