Bangor (ME)
September
Weather in Bangor, Maine for September 2027
Your guide to Bangor weather in September - trends and predictions
In general, the average temperature in Bangor at the beginning of September is 21.7 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 19.1 °C by the end of September.
Bangor experiences moderate rainfall in September, with an average of 6 rainy days and a total precipitation of 189 mm.
Is September a good time to visit Bangor? check out the best time to travel to Bangor page.
✨ Is September a good time to visit Bangor? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
24
Dry days
6
Rainy days
0
Snow days
21°/11°
Temperatures
14 km/h
Avg max wind
73 %
Avg humidity
Bangor Weather September
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Temperatures trend during September in Bangor
See the weather trend as well as the moving average line
September weather in Bangor day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Light rain | 25° /12° | 2.5 mm | 6 | |
| Sept. 2 |  Overcast | 22° /12° | 0 mm | 5 | |
| Sept. 3 |  Heavy rain | 20° /11° | 53.4 mm | 4 | |
| Sept. 4 | Light rain | 21° /12° | 6.4 mm | 4 | |
| Sept. 5 |  Sunny | 21° /13° | 0.1 mm | 5 | |
| Sept. 6 |  Patchy rain possible | 21° /12° | 0.1 mm | 5 | |
| Sept. 7 | Light rain | 21° /10° | 8.7 mm | 5 | |
| Sept. 8 | Overcast | 22° /10° | 0.8 mm | 4 | |
| Sept. 9 |  Partly cloudy | 20° /7° | 0.5 mm | 4 | |
| Sept. 10 | Light rain | 23° /11° | 6 mm | 5 | |
| Sept. 11 | Partly cloudy | 23° /9° | 0 mm | 5 | |
| Sept. 12 | Sunny | 23° /9° | 0 mm | 6 | |
| Sept. 13 | Light rain | 21° /10° | 3.5 mm | 4 | |
| Sept. 14 | Overcast | 23° /11° | 0 mm | 5 | |
| Sept. 15 | Sunny | 23° /10° | 0 mm | 6 | |
| Sept. 16 | Sunny | 26° /12° | 0 mm | 5.9 | |
| Sept. 17 | Patchy rain possible | 24° /12° | 1.6 mm | 4 | |
| Sept. 18 | Patchy rain possible | 23° /12° | 1.6 mm | 5 | |
| Sept. 19 | Overcast | 20° /10° | 0 mm | 5 | |
| Sept. 20 | Overcast | 17° /8° | 0.5 mm | 3 | |
| Sept. 21 |  Cloudy | 19° /8° | 0 mm | 4 | |
| Sept. 22 | Cloudy | 18° /9° | 0 mm | 4 | |
| Sept. 23 | Light rain | 19° /9° | 6.2 mm | 4 | |
| Sept. 24 | Overcast | 19° /9° | 0 mm | 4 | |
| Sept. 25 | Heavy rain | 19° /10° | 27.3 mm | 3 | |
| Sept. 26 | Heavy rain | 20° /13° | 45.7 mm | 3 | |
| Sept. 27 | Light rain | 19° /11° | 3.6 mm | 4 | |
| Sept. 28 |  Moderate rain | 18° /11° | 16 mm | 3 | |
| Sept. 29 | Light rain | 19° /12° | 4.7 mm | 4 | |
| Sept. 30 | Cloudy | 20° /12° | 0 mm | 4 | |
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Important Notice
Our weather forecast for Bangor 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 Bangor forecast closer to your planned date for the most up-to-date weather information.
Change Month
Bangor in September - FAQ
What are the expected maximum and minimum temperatures in Bangor during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Bangor during September?
Significant rainfall exceeding 189 mm is expected in Bangor during September, occurring over more than 6 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Bangor during September?
The average wind speed in Bangor during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Bangor
Explore the daily rainfall trends and prepare for Bangors September weather 💧
Typically, Bangor has 6 rainy days in September with a total of 189 mm of rainfall.
UV exposure in Bangor during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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