Larimer County Climate
Larimer County, Colorado
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
44.8°F
Annual Precip
16.7"
Annual Snowfall
89.3"
Extreme Heat Days
14
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5b
Minimum winter temperature range for plant survival
1,785
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Larimer County
Climate Verdict
Larimer County has a cool, averaging 44.8°F annually, semi-arid conditions with only 16.7 inches of annual precipitation, rare extreme heat with only 14.420000000000002 days above 90°F annually, heavy winter snowfall averaging 89.3 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 27.0°F. summers are pleasantly cool with July averaging 66.8°F. The 40°F seasonal variation provides noticeable but manageable change. December is typically the coldest month and July the warmest.
Outdoor & Gardening Guidance
Winter sports enthusiasts benefit from reliable snow cover for 3-4 months annually.
Regional Context
Larimer County closely matches the Colorado statewide average temperature of 45.9°F.
Climate Profile
About Larimer County Weather
Larimer sits between temperate and cold
At 44.8°F annually, Larimer County runs 5.7 degrees cooler than the U.S. median of 50.5°F, reflecting its northern Colorado location and higher elevation. The county receives 16.7 inches of precipitation annually, matching national averages.
Slightly cooler than Colorado average
Larimer County's 44.8°F average is 1.2 degrees below Colorado's state average of 46.0°F, placing it in the cooler half of Colorado counties. This moderate position reflects the county's mix of mountain, foothill, and plains terrain.
Warmer than high peaks, cooler than plains
Larimer averages 44.8°F—roughly 10 degrees warmer than alpine Lake County but cooler than Logan County's 50.4°F. The county's 89.3 inches of annual snowfall positions it between high-elevation neighbors and lower-lying eastern plains counties.
Mild summers, moderate winters, 14 hot days
July averages 66.8°F with just 14 days reaching 90°F annually, making summers relatively mild. Winters are cold but not extreme—January averages 27.0°F with 89.3 inches of annual snowfall distributed across a longer season.
Standard Colorado HVAC and snow readiness
Year-round HVAC maintenance is essential given the 39.8-degree swing between July and January temperatures. Plan for moderate to heavy snowfall (89.3 inches annually) and prepare for occasional summer heat with standard air conditioning.
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.