Liberty County Climate
Liberty County, Montana
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
42.7°F
Annual Precip
11.1"
Annual Snowfall
35.9"
Extreme Heat Days
20
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
4a
Minimum winter temperature range for plant survival
1,847
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Liberty County
Climate Verdict
Liberty County has a cool, averaging 42.7°F annually, arid conditions receiving just 11.1 inches of precipitation annually, occasional hot days — 20.133333333333336 per year above 90°F, moderate snowfall of 35.9 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 18.0°F. summers are pleasantly cool with July averaging 67.9°F. The 50°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Liberty County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Liberty County closely matches the Montana statewide average temperature of 43.7°F, it is somewhat drier than average for Montana.
Climate Profile
About Liberty County Weather
Dry and Cold Northern Plains Weather
Liberty County's annual average of 42.7°F is nearly 12 degrees colder than the national median, reflecting its position on the windy northern plains. The region is exceptionally dry, receiving only 11.1 inches of precipitation annually.
Cooler and Drier Than the State Median
Liberty County is colder than the 43.7°F state average and is one of Montana's more arid regions. It receives about 4 inches less precipitation annually than the typical Montana county.
Harsher Winters Than Its Southern Neighbors
With a January average of 18.0°F, Liberty County is much colder in winter than Lewis and Clark County's 24.7°F. It also faces more extreme heat, recording 20 days over 90°F compared to its mountain-shielded neighbors.
Wide Swings Between Deep Freeze and Heat
Winter is intense here, with a seasonal average of 20.1°F and 35.9 inches of snow. Conversely, July averages a warm 67.9°F, frequently pushing into the high 90s during the peak of summer.
Winterize for Cold and Conserve Water
Residents need heavy-duty insulation to combat the sub-20-degree January lows and wind chill. Because annual precipitation is so low at 11.1 inches, rainwater catchment and drought-resistant crops are highly recommended.
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.