Hancock County (Bar Harbor)
September
Weather in Hancock County, Maine for September 2027
Your guide to Hancock County weather in September - trends and predictions
In general, the average temperature in Hancock County at the beginning of September is 20.1 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 18.4 °C by the end of September.
Hancock County experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 253.8 mm.
Is September a good time to visit Hancock County? check out the best time to travel to Hancock County page.
✨ Is September a good time to visit Hancock County? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
23
Dry days
7
Rainy days
0
Snow days
20°/11°
Temperatures
16 km/h
Avg max wind
76 %
Avg humidity
Hancock County Weather September
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Temperatures trend during September in Hancock County
See the weather trend as well as the moving average line
September weather in Hancock County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Light rain | 23° /13° | 2.8 mm | 6 | |
| Sept. 2 |  Overcast | 20° /12° | 0 mm | 5 | |
| Sept. 3 |  Heavy rain | 18° /11° | 104.1 mm | 3 | |
| Sept. 4 |  Moderate rain | 20° /12° | 16.2 mm | 3 | |
| Sept. 5 |  Sunny | 20° /13° | 0 mm | 5 | |
| Sept. 6 |  Partly cloudy | 19° /13° | 0.7 mm | 5 | |
| Sept. 7 | Moderate rain | 21° /11° | 11.2 mm | 5 | |
| Sept. 8 |  Patchy rain possible | 21° /11° | 1.3 mm | 4 | |
| Sept. 9 | Sunny | 19° /10° | 0 mm | 4 | |
| Sept. 10 | Light rain | 23° /13° | 7.5 mm | 5 | |
| Sept. 11 | Sunny | 23° /9° | 0 mm | 6 | |
| Sept. 12 | Sunny | 22° /11° | 0 mm | 6 | |
| Sept. 13 | Light rain | 20° /11° | 2.6 mm | 3 | |
| Sept. 14 | Partly cloudy | 21° /12° | 0 mm | 5 | |
| Sept. 15 | Sunny | 22° /10° | 0 mm | 6 | |
| Sept. 16 | Sunny | 20° /10° | 0 mm | 5 | |
| Sept. 17 | Patchy rain possible | 21° /11° | 1.7 mm | 4 | |
| Sept. 18 | Light rain | 21° /12° | 3.5 mm | 5 | |
| Sept. 19 | Overcast | 20° /11° | 0 mm | 5 | |
| Sept. 20 | Overcast | 17° /9° | 0.5 mm | 3 | |
| Sept. 21 |  Cloudy | 18° /9° | 0 mm | 4 | |
| Sept. 22 | Cloudy | 17° /10° | 0 mm | 4 | |
| Sept. 23 | Patchy rain possible | 19° /11° | 2 mm | 4 | |
| Sept. 24 | Cloudy | 17° /11° | 0 mm | 4 | |
| Sept. 25 | Moderate rain | 18° /11° | 21.8 mm | 3 | |
| Sept. 26 | Heavy rain | 19° /13° | 45.4 mm | 3 | |
| Sept. 27 | Light rain | 19° /13° | 5.8 mm | 4 | |
| Sept. 28 | Moderate rain | 17° /11° | 16.7 mm | 3 | |
| Sept. 29 | Moderate rain | 19° /12° | 10.1 mm | 4 | |
| Sept. 30 | Cloudy | 20° /12° | 0 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Hancock County 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 Hancock County forecast closer to your planned date for the most up-to-date weather information.
Change Month
Hancock County in September - FAQ
What are the expected maximum and minimum temperatures in Hancock County during September?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Hancock County during September?
Significant rainfall exceeding 253.8 mm is expected in Hancock County during September, occurring over more than 7 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Hancock County during September?
The average wind speed in Hancock County during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Hancock County
Explore the daily rainfall trends and prepare for Hancock Countys September weather 💧
Typically, Hancock County has 7 rainy days in September with a total of 253.8 mm of rainfall.
UV exposure in Hancock County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Top locations in Hancock County
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