September weather in Ellsworth, ME
The average temperature in Ellsworth in September is 59.3°F (49.2°F–69.3°F). Average precipitation: 3.92 inches.
September is a fall month in Ellsworth, and is warmer than the annual average of 44.5°F. Daily temperatures swing about 20.1°F between overnight low and afternoon high. Daylight averages about 12h 17m. For travel, September is a comfortable month to visit.
Avg High
69.3°F
Avg Low
49.2°F
Precipitation
3.92 in
Daylight
12h 17m
September records in Ellsworth
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 82.0°F (2025) | 43.0°F (2018) | 0.19 in (2024) |
| September 2 | 79.0°F (2015) | 41.0°F (2017) | 2.96 in (2013) |
| September 3 | 87.1°F (2015) | 42.1°F (2024) | 0.55 in (2017) |
| September 4 | 81.0°F (2018) | 46.0°F (2024) | 0.08 in (2012) |
| September 5 | 89.1°F (2023) | 44.1°F (2013) | 1.88 in (2012) |
| September 6 | 84.9°F (2023) | 39.9°F (2013) | 1.09 in (2017) |
| September 7 | 81.0°F (2023) | 45.0°F (2020) | 0.99 in (2019) |
| September 8 | 88.0°F (2015) | 43.0°F (2013) | 0.45 in (2013) |
| September 9 | 88.0°F (2016) | 39.0°F (2013) | 2.00 in (2021) |
| September 10 | 81.0°F (2022) | 37.9°F (2018) | 1.29 in (2021) |
| September 11 | 82.0°F (2022) | 39.0°F (2011) | 2.71 in (2018) |
| September 12 | 82.0°F (2022) | 39.0°F (2020) | 0.14 in (2013) |
| September 13 | 82.0°F (2017) | 39.0°F (2025) | 0.95 in (2013) |
| September 14 | 80.1°F (2018) | 37.9°F (2019) | 0.80 in (2015) |
| September 15 | 81.0°F (2015) | 36.0°F (2020) | 0.20 in (2011) |
| September 16 | 82.9°F (2015) | 39.9°F (2012) | 2.54 in (2023) |
| September 17 | 84.0°F (2024) | 36.0°F (2013) | 0.00 in (2011) |
| September 18 | 82.0°F (2015) | 37.9°F (2019) | 0.67 in (2023) |
| September 19 | 77.0°F (2024) | 32.0°F (2014) | 0.71 in (2022) |
| September 20 | 78.1°F (2013) | 32.0°F (2020) | 1.32 in (2022) |
| September 21 | 79.0°F (2016) | 30.0°F (2020) | 0.12 in (2014) |
| September 22 | 79.0°F (2016) | 32.0°F (2020) | 1.78 in (2022) |
| September 23 | 81.0°F (2017) | 37.0°F (2018) | 0.34 in (2016) |
| September 24 | 80.1°F (2017) | 34.0°F (2018) | 0.85 in (2019) |
| September 25 | 82.0°F (2011) | 30.9°F (2018) | 1.76 in (2025) |
| September 26 | 80.1°F (2011) | 36.0°F (2016) | 2.06 in (2021) |
| September 27 | 81.0°F (2014) | 37.0°F (2015) | 0.31 in (2018) |
| September 28 | 75.9°F (2014) | 37.0°F (2012) | 0.74 in (2020) |
| September 29 | 79.0°F (2025) | 37.9°F (2013) | 0.44 in (2012) |
| September 30 | 75.0°F (2024) | 34.0°F (2022) | 4.91 in (2015) |