September weather in Elk River, MN
The average temperature in Elk River in September is 60.8°F (49.0°F–72.5°F). Average precipitation: 3.61 inches.
September is a fall month in Elk River, and is warmer than the annual average of 44°F. Daily temperatures swing about 23.5°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 18m. For travel, September is a comfortable month to visit.
Avg High
72.5°F
Avg Low
49.0°F
Precipitation
3.61 in
Daylight
12h 18m
September records in Elk River
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 91.0°F (2022) | 46.9°F (2009) | 2.10 in (1989) |
| September 2 | 91.0°F (2022) | 50.0°F (2009) | 2.09 in (1957) |
| September 3 | 96.1°F (2023) | 48.0°F (2022) | 1.91 in (1985) |
| September 4 | 96.1°F (2023) | 42.1°F (2025) | 1.20 in (1941) |
| September 5 | 96.1°F (2023) | 42.1°F (2025) | 1.55 in (2018) |
| September 6 | 88.0°F (2007) | 41.0°F (2025) | 3.17 in (2005) |
| September 7 | 90.0°F (2013) | 43.0°F (2025) | 3.29 in (2004) |
| September 8 | 91.0°F (2013) | 41.0°F (2025) | 5.04 in (1991) |
| September 9 | 88.0°F (2022) | 39.9°F (2020) | 2.10 in (1991) |
| September 10 | 89.1°F (2013) | 33.1°F (2020) | 2.95 in (1982) |
| September 11 | 84.0°F (2011) | 34.0°F (2020) | 1.80 in (1961) |
| September 12 | 93.9°F (2012) | 34.0°F (2007) | 2.60 in (1980) |
| September 13 | 86.0°F (2017) | 36.0°F (2014) | 4.92 in (2005) |
| September 14 | 87.1°F (2024) | 37.0°F (2007) | 1.32 in (1941) |
| September 15 | 86.0°F (2025) | 33.1°F (2007) | 1.20 in (1986) |
| September 16 | 91.0°F (2018) | 36.0°F (2011) | 1.60 in (2010) |
| September 17 | 90.0°F (2025) | 39.0°F (2020) | 1.90 in (1997) |
| September 18 | 88.0°F (2019) | 39.0°F (2020) | 1.10 in (1942) |
| September 19 | 82.9°F (2024) | 36.0°F (2020) | 1.55 in (2005) |
| September 20 | 91.0°F (2021) | 39.9°F (2020) | 1.30 in (1988) |
| September 21 | 86.0°F (2022) | 45.0°F (2017) | 2.25 in (2018) |
| September 22 | 90.0°F (2017) | 39.0°F (2012) | 2.45 in (2005) |
| September 23 | 84.9°F (2007) | 33.1°F (2012) | 1.68 in (1964) |
| September 24 | 87.1°F (2017) | 34.0°F (2012) | 1.46 in (1977) |
| September 25 | 78.1°F (2009) | 39.9°F (2021) | 0.85 in (1963) |
| September 26 | 81.0°F (2020) | 37.0°F (2018) | 0.98 in (1972) |
| September 27 | 82.9°F (2008) | 37.0°F (2012) | 0.43 in (1945) |
| September 28 | 84.0°F (2024) | 32.0°F (2022) | 0.23 in (2005) |
| September 29 | 87.1°F (2024) | 33.1°F (2022) | 0.67 in (1988) |
| September 30 | 86.0°F (2021) | 30.0°F (2018) | 2.13 in (1965) |