Knox County Climate
Knox County, Maine
Avg Annual Temp
46.0°F
Annual Precip
51.9"
Annual Snowfall
60.9"
Extreme Heat Days
0.8
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Knox County Weather
Temperate maritime climate on the coast
Knox's 46.0°F annual average is well above the Maine average but remains cooler than the national median. The ocean keeps the air stable and prevents extreme temperature peaks.
Moderate temperatures by Maine standards
At 46.0°F, Knox is warmer than the state average of 43.8°F. It ranks among the warmer coastal counties, benefiting from the Atlantic's thermal mass.
Less snow than the inland interior
Knox receives 60.9 inches of snow, which is notably less than the 78.3 inches in neighboring Androscoggin. Its 46.0°F average keeps it in line with other coastal peers like Lincoln.
Very few hot days and steady winters
The county records only 1 day of extreme heat per year on average. Winters are relatively mild for Maine, with a December-February average of 26.5°F.
Plan for moisture over extreme heat
With 51.9 inches of annual precipitation and only 1 extreme heat day, dehumidification is more important than air conditioning. Durable winter tires are still needed for the 60.9 inches of snow.
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.