Chickasaw County Climate
Chickasaw County, Iowa
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
44.7°F
Annual Precip
38.8"
Annual Snowfall
37.1"
Extreme Heat Days
8
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5a
Minimum winter temperature range for plant survival
2,499
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Chickasaw County
Climate Verdict
Chickasaw County has a cool, averaging 44.7°F annually, moderate rainfall of 38.8 inches per year, rare extreme heat with only 8.4 days above 90°F annually, moderate snowfall of 37.1 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 14.4°F. summers are warm — July averages 70.5°F. Residents experience a substantial 56°F difference between winter and summer.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Chickasaw County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Chickasaw County is 3.3°F cooler than the Iowa statewide average of 48.0°F, it is somewhat wetter than average for Iowa.
Climate Profile
About Chickasaw County Weather
Chickasaw County ranks among the cooler U.S. regions
With an annual average temperature of 44.7°F, Chickasaw County is significantly colder than the national average. This humid continental area experiences deep seasonal shifts and consistent annual moisture.
One of Iowa's cooler northern counties
The county's 44.7°F average temperature is 3.3 degrees lower than the state average of 48.0°F. It is also wetter than the state norm, receiving 38.8 inches of precipitation compared to the 36.1-inch average.
Higher precipitation than western Iowa neighbors
Chickasaw receives 38.8 inches of annual precipitation, making it wetter than neighbors like Cherokee or Clay. Despite the moisture, it sees only 8 extreme heat days per year, reflecting a milder summer profile than other parts of the state.
Mild summers paired with frigid winter lows
The July average stays relatively cool at 70.5°F, and heat waves are rare. However, January is punishing with an average of 14.4°F, contributing to a total annual snowfall of 37.1 inches.
Heavy winter gear is a Chickasaw necessity
Winter weather dominates planning, as temperatures average only 18.0°F during the December-to-February stretch. Residents should invest in high-quality home insulation and reliable snow removal tools to handle the 37.1 inches of snow.
Frequently Asked Questions
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Data sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.