Kennebec County Climate
Kennebec County, Maine
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
45.7°F
Annual Precip
44.9"
Annual Snowfall
77.2"
Extreme Heat Days
5
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5b
Minimum winter temperature range for plant survival
2,253
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Kennebec County
Climate Verdict
Kennebec County has a cool, averaging 45.7°F annually, moderately wet with 44.9 inches of annual precipitation, rare extreme heat with only 5.233333333333333 days above 90°F annually, heavy winter snowfall averaging 77.2 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 19.6°F. summers are pleasantly cool with July averaging 69.9°F. Residents experience a substantial 50°F difference between winter and summer.
Outdoor & Gardening Guidance
Winter sports enthusiasts benefit from reliable snow cover for 3-4 months annually.
Regional Context
Kennebec County closely matches the Maine statewide average temperature of 43.8°F, it is somewhat drier than average for Maine.
Climate Profile
About Kennebec County Weather
Classic Maine climate in the heartland
Kennebec’s 45.7°F average annual temperature is cooler than the national median but typical for the Northeast. It experiences a traditional four-season cycle with distinct, cold winters.
Warmer than the state baseline
The county's 45.7°F average is nearly 2 degrees warmer than the 43.8°F Maine baseline. It ranks in the warmer half of Maine's 16 counties.
Mirrors the southern coastal counties
Its climate closely matches Cumberland County, though it sits slightly further from immediate ocean influence. It is significantly milder than the 40.7°F average found in Franklin to the northwest.
Predictable snow and warmer summer peaks
Residents manage 77.2 inches of snowfall and 5 days of extreme heat over 90°F. The July average of 69.9°F is one of the warmest in the state.
Balanced HVAC is the best investment
A heat pump is ideal for the 5 days of extreme heat and the 22.8°F average winter lows. Expect to use your snow shovel frequently given the 77.2 inches of annual accumulation.
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.