Maine Annual Rainfall see below for individual cities 


 

Maine city precipitation totals

City

Avg Annual Precip

Avg Snow Annual

 Avg. days of Precip

Avg # thunderstorm days

Avg # hail days
Augusta 41.23 78.1 130 30 1
Caribou 37.44 111.3 161 21 1
Portland 45.83 70.0 129 10 0
State Average - 42.28 inches, 23rd wettest in U.S. 

Maine Precipitation Records 

  • Driest location ranked by lowest annual precipitation: Presque Isle, northeastern Maine, 35.27"
  • Wettest location ranked by highest annual precipitation: Acadia National Park, southern Maine, 57.30"
  • Snowiest location ranked by highest annual average snowfall: Rangeley, western Maine, 118.0"
  • State precipitation maximum for 24 hours - Saco, southwestern Maine, 10/21-22/1996, 19.19"
  • State precipitation maximum for 1 year - Brunswick, southwestern Maine, 1945, 75.64"
  • State snow maximum for 24 hours - Orono, central Maine, 12/29-30/1962, 40.0" 
  • State snow maximum for 1 season - Long Falls Dam, western Maine, 1968-1969, 238.5"
  • Maine has the lowest average number of days per year with thunderstorms east of the Rocky Mountains
  • Average monthly precipitation in Maine is between three and four inches, with November being the wettest month and 
February the driest month.

Precipitation data for other U.S. states
Data source: National Data Climatic Center