Hill County Climate
Hill County, Montana
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
42.1°F
Annual Precip
11.5"
Annual Snowfall
30.3"
Extreme Heat Days
25
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
3b
Minimum winter temperature range for plant survival
1,829
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Hill County
Climate Verdict
Hill County has a cool, averaging 42.1°F annually, arid conditions receiving just 11.5 inches of precipitation annually, occasional hot days — 25.080000000000002 per year above 90°F, moderate snowfall of 30.3 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 16.6°F. summers are pleasantly cool with July averaging 67.9°F. Residents experience a substantial 51°F difference between winter and summer.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Hill County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Hill County closely matches the Montana statewide average temperature of 43.7°F, it is somewhat drier than average for Montana.
Climate Profile
About Hill County Weather
Cold and exceptionally dry northern plains
Hill County is one of the drier spots in the U.S., receiving just 11.5 inches of precipitation annually. Its average annual temperature of 42.1°F is significantly lower than the national median.
Cooler than the Montana state norm
At 42.1°F, Hill County sits below the state average of 43.7°F. Its location on the northern border subjects it to more frequent arctic blasts than the central or southern counties.
Warmer than Glacier, colder than Garfield
Hill County is warmer than Glacier County to its west (39.9°F) but significantly cooler than Garfield County (44.9°F). It experiences a more continental climate than its neighbors.
Frigid winters and 25 hot days
January is particularly harsh with an average temperature of just 16.6°F and 30.3 inches of snow. Conversely, summers bring 25 days of heat over 90°F, with July averaging 67.9°F.
Insulate for deep winter freezes
The 16.6°F January average requires high-performance home insulation and reliable heating sources. Residents should also plan for water conservation given the very low 11.5 inches of annual rainfall.
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.