October weather in Stonington, IL
The average temperature in Stonington in October is °F (°F–°F). Average precipitation: 3.85 inches.
October is a fall month in Stonington, and is cooler than the annual average of 0°F. Expect about 8 days with precipitation. Daylight averages about 10h 56m.
Avg High
°F
Avg Low
°F
Precipitation
3.85 in
Daylight
10h 56m
October records in Stonington
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 90.0°F (2021) | 39.0°F (2022) | 0.83 in (1945) |
| October 2 | 87.1°F (2025) | 37.0°F (2020) | 2.46 in (2014) |
| October 3 | 88.0°F (2023) | 36.0°F (2020) | 1.39 in (2014) |
| October 4 | 88.0°F (2023) | 39.0°F (2022) | 0.43 in (2013) |
| October 5 | 84.9°F (2025) | 30.0°F (2020) | 1.51 in (1955) |
| October 6 | 87.1°F (2024) | 30.0°F (2020) | 1.01 in (1967) |
| October 7 | 84.9°F (2025) | 41.0°F (2023) | 2.04 in (1955) |
| October 8 | 79.0°F (2020) | 32.0°F (2022) | 0.57 in (2009) |
| October 9 | 81.0°F (2020) | 32.0°F (2022) | 1.80 in (2009) |
| October 10 | 86.0°F (2021) | 34.0°F (2022) | 0.73 in (2001) |
| October 11 | 82.0°F (2024) | 36.0°F (2023) | 1.98 in (1959) |
| October 12 | 84.0°F (2020) | 46.9°F (2023) | 2.00 in (1969) |
| October 13 | 86.0°F (2024) | 36.0°F (2020) | 1.69 in (1969) |
| October 14 | 78.1°F (2025) | 37.0°F (2020) | 1.19 in (2009) |
| October 15 | 81.0°F (2025) | 36.0°F (2022) | 0.97 in (1966) |
| October 16 | 78.1°F (2025) | 26.1°F (2020) | 1.38 in (1957) |
| October 17 | 79.0°F (2025) | 28.0°F (2020) | 2.20 in (2006) |
| October 18 | 79.0°F (2025) | 27.0°F (2022) | 2.90 in (2004) |
| October 19 | 75.0°F (2021) | 27.0°F (2022) | 1.93 in (2025) |
| October 20 | 75.9°F (2021) | 27.0°F (2022) | 1.13 in (2016) |
| October 21 | 77.0°F (2024) | 33.1°F (2022) | 1.16 in (1941) |
| October 22 | 79.0°F (2024) | 37.0°F (2023) | 2.01 in (1971) |
| October 23 | 82.9°F (2020) | 36.0°F (2025) | 2.35 in (2009) |
| October 24 | 75.9°F (2022) | 32.0°F (2025) | 1.29 in (2008) |
| October 25 | 75.9°F (2022) | 32.0°F (2025) | 0.68 in (2001) |
| October 26 | 73.9°F (2023) | 37.0°F (2021) | 1.83 in (1947) |
| October 27 | 75.0°F (2023) | 32.0°F (2022) | 2.61 in (2019) |
| October 28 | 77.0°F (2023) | 34.0°F (2020) | 0.79 in (1953) |
| October 29 | 73.9°F (2024) | 34.0°F (2022) | 1.97 in (1961) |
| October 30 | 82.0°F (2024) | 30.0°F (2020) | 1.60 in (1942) |
| October 31 | 81.0°F (2024) | 27.0°F (2023) | 1.80 in (2013) |