Average Rainfall for Maine in September
The tables below give monthly averages for rainfall during September at cities, towns and lakes in Maine.
Each place has a total for the amount of precipitation it usually receives this month 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 rainfall 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 |
|---|---|---|---|
| 11 | Acadia National Park | 4.2 | 107 |
| 7 | Belfast | 4.1 | 104 |
| 9 | Brunswick | 4.2 | 107 |
| 11 | Eastport | 4.3 | 110 |
| 9 | Jonesboro | 3.5 | 89 |
| 10 | Kennebunkport | 3.9 | 100 |
| 10 | Newcastle | 4.2 | 106 |
| 9 | Portland | 3.8 | 96 |
| 10 | Tenants Harbor | 4.0 | 102 |
Central Maine
| Days | Place | Inches | Millimetres |
|---|---|---|---|
| 10 | Augusta | 3.9 | 99 |
| 9 | Bangor | 3.8 | 96 |
| 10 | Dover-Foxcroft | 3.7 | 94 |
| 11 | Flagstaff Lake, Long Falls Dam | 3.2 | 82 |
| 9 | Grand Lake Stream | 3.5 | 90 |
| 9 | Lewiston | 3.7 | 95 |
| 13 | Lower Richardson Lake, Middle Dam | 3.2 | 82 |
| 11 | Rangeley | 3.5 | 88 |
| 9 | Rumford | 3.7 | 94 |
| 10 | Waterville | 3.8 | 97 |
Northern Maine
| Days | Place | Inches | Millimetres |
|---|---|---|---|
| 12 | Fort Kent | 3.7 | 94 |
| 11 | Millinocket | 3.9 | 99 |
| 11 | Moosehead Lake, Brassua Dam | 3.4 | 87 |
| 10 | Presque Isle | 3.5 | 89 |
Reference
NOAA National Centers for Environmental Information (NCEI). Climate Normals.