Washington County Climate
Washington County, Maine
Avg Annual Temp
43.8°F
Annual Precip
49.2"
Annual Snowfall
86.1"
Extreme Heat Days
3.311111111111111
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Washington County Weather
The brisk edge of Down East
Washington County averages 43.8°F, which is roughly 10 degrees cooler than the median U.S. county. This humid continental climate is heavily influenced by the cold waters of the Gulf of Maine.
Defining the Maine average
The county’s 43.8°F average perfectly matches the statewide annual temperature for Maine. It serves as the benchmark for the state’s weather patterns, balancing coastal and northern influences.
Maine's wettest eastern corner
Washington County receives 49.2 inches of precipitation, making it wetter than Waldo (48.8) and Penobscot (43.8). It also sees significantly more snow than Waldo, averaging 86.1 inches.
Foggy summers and snowy winters
July averages 67.2°F, but the county only sees about 3 days of extreme heat per year. Winters bring 86.1 inches of snow and January temperatures that average a cold 18.2°F.
Gear up for heavy precipitation
High-quality rain gear and waterproof home sealing are essential for the 49.2 inches of annual rainfall. Winter prep should account for the 21.5°F seasonal average and nearly 90 inches of snow.
Frequently Asked Questions
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Track your own weather in Washington County
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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.