Montgomery County Climate
Montgomery County, Iowa
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
50.8°F
Annual Precip
37.2"
Annual Snowfall
27.4"
Extreme Heat Days
26
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5b
Minimum winter temperature range for plant survival
3,441
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Montgomery County
Climate Verdict
Montgomery County has a mild, with an average annual temperature of 50.8°F, moderate rainfall of 37.2 inches per year, occasional hot days — 26.1 per year above 90°F, moderate snowfall of 27.4 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 22.7°F. summers are warm — July averages 75.9°F. Residents experience a substantial 53°F difference between winter and summer.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Montgomery County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Montgomery County closely matches the Iowa statewide average temperature of 48.0°F.
Climate Profile
About Montgomery County Weather
A Warmer Midwestern Pocket
Montgomery County averages 50.8°F annually, which is several degrees below the national median but warm for its latitude. It receives 37.2 inches of annual precipitation.
High Temperature Rank
This county is one of the warmest in Iowa, exceeding the state average of 48.0°F by 2.8 degrees. It typically experiences less severe winter cold than northern counties.
Matching the Neighbors
The climate here is nearly identical to Mills County but stays significantly warmer than Osceola. It receives more precipitation than western neighbor Monona.
Hot Summers, Moderate Snow
The county endures 26 days of extreme heat over 90°F each year. Winter brings 27.4 inches of snow and an average temperature of 25.8°F.
Prepare for the Heat
Plan for nearly a full month of extreme summer heat with high-capacity cooling systems. Snow shoveling is a regular but manageable task given the 27.4-inch annual average.
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.