Maine (Bangor)
September
Weather in Maine for September 2026
Your guide to Maine weather in September - trends and predictions
In general, the average temperature in Maine at the beginning of September is 21.7 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 20 °F by the end of September.
With an average of 3 rainy days, Maine experiences minimal rainfall in September.
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Temperatures
Rain 🌧️
More
27
Dry days
3
Rainy days
0
Snow days
21°/12°
Temperatures
13 km/h
Avg max wind
73 %
Avg humidity
Maine Weather September
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What’s the Weather Like in Maine This September?
Discover the average temperatures and weather trends across Maine’s cities this September.
Temperatures trend during September in Maine
See the weather trend as well as the moving average line
September weather in Maine day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Heavy rain at times | 25° /14° | 3.7 mm | 6 | |
| Sept. 2 |  Cloudy | 22° /12° | 0 mm | 5 | |
| Sept. 3 |  Sunny | 22° /10° | 0 mm | 6 | |
| Sept. 4 | Cloudy | 20° /11° | 0 mm | 5 | |
| Sept. 5 | Sunny | 22° /13° | 0 mm | 6 | |
| Sept. 6 |  Patchy rain possible | 22° /13° | 0.1 mm | 5 | |
| Sept. 7 | Patchy rain possible | 19° /11° | 13 mm | 5 | |
| Sept. 8 |  Overcast | 21° /9° | 0.2 mm | 5 | |
| Sept. 9 |  Partly cloudy | 21° /7° | 0 mm | 6 | |
| Sept. 10 | Partly cloudy | 21° /9° | 0 mm | 5 | |
| Sept. 11 | Partly cloudy | 23° /7° | 0 mm | 6 | |
| Sept. 12 | Partly cloudy | 23° /9° | 0 mm | 7 | |
| Sept. 13 | Patchy rain possible | 24° /10° | 0.1 mm | 6 | |
| Sept. 14 | Overcast | 24° /12° | 0 mm | 5 | |
| Sept. 15 | Sunny | 24° /12° | 0 mm | 7 | |
| Sept. 16 | Sunny | 27° /13° | 0 mm | 7 | |
| Sept. 17 | Overcast | 26° /11° | 0 mm | 6 | |
| Sept. 18 | Overcast | 23° /12° | 0 mm | 6 | |
| Sept. 19 | Overcast | 22° /12° | 0 mm | 5 | |
| Sept. 20 | Overcast | 18° /10° | 0 mm | 5 | |
| Sept. 21 | Cloudy | 19° /9° | 0 mm | 5 | |
| Sept. 22 | Cloudy | 18° /10° | 0 mm | 4 | |
| Sept. 23 | Overcast | 20° /12° | 9.4 mm | 5 | |
| Sept. 24 | Overcast | 18° /12° | 0 mm | 4 | |
| Sept. 25 | Patchy rain possible | 18° /12° | 40.9 mm | 4 | |
| Sept. 26 |  Moderate or heavy rain shower | 20° /14° | 68.5 mm | 5 | |
| Sept. 27 | Patchy rain possible | 21° /11° | 1.9 mm | 6 | |
| Sept. 28 | Patchy rain possible | 21° /12° | 0.1 mm | 5 | |
| Sept. 29 | Overcast | 22° /12° | 0 mm | 6 | |
| Sept. 30 | Cloudy | 20° /13° | 0 mm | 5 | |
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Important Notice
Our weather forecast for Maine in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Maine forecast closer to your planned date for the most up-to-date weather information.
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Maine in September - FAQ
What are the expected maximum and minimum temperatures in Maine during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Maine during September?
Moderate rainfall is anticipated in Maine during September, with a total of 62.3 mm spread over approximately 3 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Maine during September?
The average wind speed in Maine during September is 13 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Maine
Explore the daily rainfall trends and prepare for Maines September weather 💧
Typically, Maine has 3 rainy days in September with a total of 62.3 mm of rainfall.
UV exposure in Maine during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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