Broadwater County Climate
Broadwater County, Montana
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
44.9°F
Annual Precip
10.6"
Annual Snowfall
23.7"
Extreme Heat Days
14
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5a
Minimum winter temperature range for plant survival
1,839
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Broadwater County
Climate Verdict
Broadwater County has a cool, averaging 44.9°F annually, arid conditions receiving just 10.6 inches of precipitation annually, rare extreme heat with only 14.2 days above 90°F annually, moderate snowfall of 23.7 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 23.8°F. summers are pleasantly cool with July averaging 67.5°F. The 44°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Broadwater County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Broadwater County closely matches the Montana statewide average temperature of 43.7°F, it is somewhat drier than average for Montana.
Climate Profile
About Broadwater County Weather
Cool and Arid Western Character
Broadwater County averages 44.9°F annually, which is cooler than the national median. Its climate is defined by dry air and moderate northern temperatures.
Slightly Warmer Than State Norms
The county's 44.9°F average is roughly 1.2 degrees warmer than the Montana state average. While still cool, it avoids some of the more extreme cold found in the high mountains.
One of Montana's Driest Counties
Broadwater receives only 10.6 inches of precipitation annually, far below the state average of 15.4 inches. This makes it significantly more arid than its neighbor, Cascade County.
Manageable Winters and Dry Summers
Summer averages 64.7°F with 14 extreme heat days over 90°F. Winter remains relatively mild for Montana, averaging 25.1°F with 23.7 inches of annual snow.
Focus on Water Storage and Moderate HVAC
Given the very low 10.6 inches of rainfall, irrigation and water conservation are top priorities. Heating systems should be reliable, though snowfall is lighter than in many surrounding areas.
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.