Kennebec County Climate
Kennebec County, Maine
Avg Annual Temp
45.7°F
Annual Precip
44.9"
Annual Snowfall
77.2"
Extreme Heat Days
5.233333333333333
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
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 source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.