Average Annual Precipitation for Maine
The tables below give yearly averages for rainfall plus snowfall at cities, towns and lakes in Maine.
Each place has a total for the amount of precipitation it usually receives in a year along with information on the number of days with wet weather. The count of days includes those when precipitation amounts to 0.01 inches (0.25 millimetres) or more.
The annual precipitation totals are averages based on weather data collected from 1991 to 2020 for the US National Centers for Environmental Information.
You can jump to a separate table for Maine's Coast, Central Maine and Northern Maine.
Maine Coast
| Days | Place | Inches | Millimetres |
|---|---|---|---|
| 139 | Acadia National Park | 55.5 | 1411 |
| 105 | Belfast | 48.8 | 1239 |
| 128 | Brunswick | 50.0 | 1270 |
| 140 | Eastport | 47.7 | 1210 |
| 118 | Jonesboro | 50.8 | 1291 |
| 134 | Kennebunkport | 52.0 | 1321 |
| 142 | Newcastle | 49.3 | 1251 |
| 131 | Portland | 48.1 | 1222 |
| 136 | Tenants Harbor | 47.6 | 1209 |
Central Maine
| Days | Place | Inches | Millimetres |
|---|---|---|---|
| 137 | Augusta | 41.8 | 1063 |
| 134 | Bangor | 41.7 | 1059 |
| 138 | Dover-Foxcroft | 44.7 | 1135 |
| 150 | Flagstaff Lake, Long Falls Dam | 43.0 | 1093 |
| 129 | Grand Lake Stream | 45.7 | 1160 |
| 120 | Lewiston | 45.2 | 1148 |
| 178 | Lower Richardson Lake, Middle Dam | 40.8 | 1037 |
| 167 | Rangeley | 42.6 | 1083 |
| 121 | Rumford | 48.9 | 1242 |
| 135 | Waterville | 43.4 | 1101 |
Northern Maine
| Days | Place | Inches | Millimetres |
|---|---|---|---|
| 156 | Fort Kent | 41.6 | 1057 |
| 134 | Millinocket | 45.4 | 1152 |
| 152 | Moosehead Lake, Brassua Dam | 43.3 | 1099 |
| 137 | Presque Isle | 38.1 | 966 |
Reference
NOAA National Centers for Environmental Information (NCEI). Climate Normals.