Maine weather in September: Statewide normals and every place, NOAA 1991-2020
In September, Maine's statewide normal high is 68°F and normal low 46°F; normal highs run from 66°F in Limestone to 73°F in Sanford (NOAA 1991-2020 normals).
- Statewide normal high
- 68°FSeptember, 1991-2020
- Statewide normal low
- 46°FSeptember, 1991-2020
- Statewide normal precipitation
- 3.73 inSeptember
- Warmest place
- 73°Fnormal high, Sanford
- Coolest place
- 66°Fnormal high, Limestone
Where is Maine warmest and wettest in September?
Sanford has the warmest September afternoons (73°F) and Limestone the coolest (66°F). Eastport gets the most precipitation (4.32 in) and Madison the least (3.26 in).
Statewide, September averaged 59.0°F in 2021, 57.2°F in 2022, 60.9°F in 2023, 59.2°F in 2024, 58.1°F in 2025, against a 1991-2020 normal of 56.9°F.
| Place | High | Low | Precip. | Snow |
|---|---|---|---|---|
| Portland | 71°F | 52°F | 3.77 | 0.0 |
| Lewiston | 70°F | 52°F | 3.74 | 0.0 |
| Bangor | 71°F | 49°F | 3.76 | 0.0 |
| Sanford | 73°F | 47°F | 3.82 | – |
| Augusta | 71°F | 51°F | 3.90 | – |
| Waterville | 72°F | 50°F | 3.82 | – |
| Brunswick | 70°F | 50°F | 4.20 | 0.0 |
| Orono | 70°F | 48°F | – | – |
| Bath | 71°F | 48°F | 3.92 | 0.0 |
| Presque Isle | 69°F | 47°F | 3.51 | 0.2 |
| Old | 70°F | 46°F | 3.67 | – |
| Caribou | 67°F | 46°F | 3.44 | 0.1 |
| Belfast | 70°F | 48°F | 4.09 | 0.0 |
| Gardiner | 72°F | 50°F | 3.93 | 0.0 |
| Houlton | 68°F | 44°F | 3.40 | – |
| Farmington | 70°F | 45°F | 3.51 | 0.0 |
| Millinocket | 69°F | 47°F | 3.61 | – |
| Rumford | 71°F | 48°F | 3.70 | 0.0 |
| Dover-Foxcroft | 71°F | 45°F | 3.70 | 0.0 |
| Cape Neddick | 71°F | 51°F | 4.30 | 0.0 |
| Lincoln | 70°F | 48°F | 3.43 | – |
| Madison | 70°F | 47°F | 3.26 | 0.0 |
| Fort Kent | 66°F | 43°F | 3.72 | 0.0 |
| Bridgton | 69°F | 48°F | 3.90 | 0.0 |
| Fryeburg | 73°F | 46°F | 4.04 | – |
| Van Buren | 67°F | 44°F | 3.83 | 0.0 |
| Kennebunkport | 69°F | 49°F | 3.93 | 0.0 |
| Eastport | 67°F | 51°F | 4.32 | 0.0 |
| Wiscasset | 71°F | 49°F | 4.15 | – |
| Livermore Falls | 71°F | 45°F | 3.50 | 0.0 |
| Limestone | 66°F | 44°F | 3.78 | – |
| Woodland | 71°F | 52°F | 3.38 | – |
| Greenville | 66°F | 48°F | 3.44 | – |
| Gray | 70°F | 52°F | 4.32 | 0.0 |
| Corinna | 72°F | 48°F | 3.56 | 0.0 |
| Newcastle | 69°F | 52°F | 4.19 | 0.0 |
| Bethel | 71°F | 47°F | 3.82 | – |
| Turner | 71°F | 49°F | 3.93 | 0.0 |
| Rangeley | 68°F | 44°F | 3.45 | 0.0 |
| Danforth | 70°F | 43°F | 3.79 | 0.0 |
| Patten | 67°F | 45°F | – | – |
| Vanceboro | 71°F | 46°F | 3.71 | 0.0 |
| Acadia National Park | 71°F | 53°F | 4.22 | – |
| Allagash | 67°F | 41°F | 3.40 | 0.0 |
| Andover 2 | 69°F | 44°F | 4.02 | 0.0 |
| Barnard | 70°F | 46°F | 3.78 | 0.0 |
| Brassua Dam | 67°F | 45°F | 3.42 | 0.0 |
| Bridgewater | 68°F | 44°F | 3.51 | 0.1 |
| Clayton Lake | 66°F | 41°F | 3.22 | – |
| Durham | 70°F | 47°F | 4.15 | 0.0 |
| East Hiram | 70°F | 46°F | 4.12 | 0.0 |
| East Sangerville | 70°F | 48°F | 3.54 | – |
| East Surry | 69°F | 49°F | 3.92 | – |
| Eustis | 67°F | 42°F | 3.37 | 0.0 |
| Frenchville Aroostook Airport | 66°F | 47°F | 3.46 | – |
| Grand Lake Stream | 70°F | 49°F | 3.54 | 0.0 |
| Harmony | 73°F | 45°F | 3.62 | 0.0 |
| Hartford | 69°F | 47°F | 3.85 | 0.0 |
| Hollis | 71°F | 46°F | 4.02 | 0.0 |
| Jackman | 69°F | 43°F | 3.46 | 0.0 |
| Jonesboro | 69°F | 49°F | 3.50 | – |
| Long Falls Dam | 68°F | 46°F | 3.23 | 0.0 |
| Middle Dam | 68°F | 45°F | 3.22 | – |
| Moosehead | 68°F | 44°F | 3.42 | 0.0 |
| New Sharon | 72°F | 46°F | 3.51 | 0.0 |
| Pittston Farm | 67°F | 42°F | 3.76 | 0.0 |
| Poland | 69°F | 48°F | 3.96 | 0.0 |
| Robbinston | 69°F | 49°F | 4.23 | 0.0 |
| Sebec Lake | 69°F | 45°F | 4.03 | 0.0 |
| Tenants Harbor | 68°F | 52°F | 4.01 | 0.0 |
| Topsfield 2 | 69°F | 48°F | 4.01 | 0.0 |
| Wesley | 68°F | 50°F | 3.76 | – |
| West Buxton (2 mi NNW) | 73°F | 48°F | 3.92 | – |
| West Rockport (1 mi NNW) | 69°F | 52°F | 4.49 | 0.0 |
| Westport Island | 69°F | 51°F | 4.32 | – |
| Windham (2 mi NW) | 72°F | 52°F | 4.10 | – |
Source: NOAA NCEI nClimDiv statewide normals; NOAA NCEI 1991-2020 monthly normals for each station.