Humboldt County Climate
Humboldt County, Iowa
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
46.2°F
Annual Precip
35.0"
Annual Snowfall
—
Extreme Heat Days
6
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5a
Minimum winter temperature range for plant survival
2,705
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Humboldt County
Climate Verdict
Humboldt County has a cool, averaging 46.2°F annually, moderate rainfall of 35.0 inches per year, rare extreme heat with only 6 days above 90°F annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 16.4°F. summers are warm — July averages 72.1°F. Residents experience a substantial 56°F difference between winter and summer.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Humboldt County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Humboldt County closely matches the Iowa statewide average temperature of 48.0°F.
Climate Profile
About Humboldt County Weather
Cool Temps and Low Extremes
Humboldt County maintains a cool 46.2°F annual average temperature, placing it well below the national median. This region experiences a traditional continental climate with distinct seasons but few days of extreme summer heat.
Lower Precipitation than State Norms
The county is slightly drier than the Iowa average, seeing 35.0 inches of precipitation compared to the state's 36.1 inches. Its annual temperature of 46.2°F also trails the statewide average by nearly two degrees.
A Middle Ground in Temperature
Humboldt is slightly warmer than Hancock County to the north (45.5°F) but cooler than Hardin County (46.8°F). It enjoys very few extreme heat days, recording only 6 per year compared to Hardin's 13.
Frigid Winters and Gentle Summers
Winter temperatures average a cold 19.8°F, dipping to a January low of 16.4°F. Summers are temperate with a July average of 72.1°F and only 6 days reaching the 90°F mark.
Focus on Winter Efficiency
While local snowfall data is limited, the cold 16.4°F January average suggests a strong need for furnace maintenance. Minimal extreme heat days mean cooling costs are lower here than in much of southern Iowa.
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.