October weather in Janesville, WI
The average temperature in Janesville in October is 50.6°F (39.5°F–61.7°F). Average precipitation: 2.99 inches. Average snowfall is 0.2 inches.
October is a fall month in Janesville, and is warmer than the annual average of 47.8°F. Daily temperatures swing about 22.2°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 10h 48m. For travel, October is a comfortable month to visit.
Avg High
61.7°F
Avg Low
39.5°F
Precipitation
2.99 in
Snow
0.2 in
October records in Janesville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 88.0°F (2021) | 28.9°F (2003) | 1.25 in (2018) |
| October 2 | 88.0°F (2021) | 24.1°F (2003) | 1.82 in (2019) |
| October 3 | 84.9°F (2006) | 25.0°F (2003) | 1.33 in (2021) |
| October 4 | 89.1°F (2025) | 27.0°F (1989) | 0.50 in (1999) |
| October 5 | 88.0°F (2005) | 27.0°F (2004) | 1.99 in (1991) |
| October 6 | 88.0°F (1997) | 27.0°F (2004) | 1.41 in (1995) |
| October 7 | 88.0°F (2007) | 24.1°F (1987) | 0.70 in (2021) |
| October 8 | 88.0°F (2007) | 24.1°F (1987) | 1.39 in (2021) |
| October 9 | 84.9°F (2007) | 26.1°F (2000) | 0.37 in (1994) |
| October 10 | 88.0°F (2010) | 27.0°F (1987) | 0.58 in (1990) |
| October 11 | 82.9°F (2010) | 24.1°F (1987) | 1.37 in (2017) |
| October 12 | 82.9°F (2010) | 21.9°F (1988) | 1.03 in (2021) |
| October 13 | 82.9°F (1995) | 21.9°F (1988) | 0.57 in (2011) |
| October 14 | 80.1°F (1995) | 27.0°F (1993) | 2.03 in (2023) |
| October 15 | 82.0°F (1989) | 26.1°F (2006) | 0.80 in (2017) |
| October 16 | 81.0°F (1999) | 26.1°F (2006) | 0.57 in (1992) |
| October 17 | 79.0°F (1998) | 28.0°F (1989) | 1.10 in (2006) |
| October 18 | 82.9°F (2016) | 24.1°F (1992) | 1.48 in (1998) |
| October 19 | 77.0°F (2025) | 19.0°F (1992) | 0.83 in (2025) |
| October 20 | 78.1°F (2000) | 19.9°F (1992) | 0.41 in (1995) |
| October 21 | 80.1°F (2003) | 23.0°F (2018) | 0.21 in (2008) |
| October 22 | 80.1°F (2024) | 24.1°F (1987) | 1.23 in (2020) |
| October 23 | 79.0°F (2022) | 26.1°F (2013) | 1.65 in (2001) |
| October 24 | 78.1°F (1991) | 21.9°F (1987) | 2.80 in (2001) |
| October 25 | 81.0°F (2023) | 21.9°F (1999) | 1.65 in (2021) |
| October 26 | 78.1°F (1989) | 24.1°F (2006) | 1.42 in (2016) |
| October 27 | 75.0°F (1998) | 26.1°F (1987) | 0.90 in (1995) |
| October 28 | 75.9°F (2014) | 23.0°F (1988) | 0.90 in (2015) |
| October 29 | 72.0°F (1989) | 14.0°F (1988) | 1.09 in (1996) |
| October 30 | 82.0°F (2024) | 18.0°F (1988) | 0.56 in (2009) |
| October 31 | 75.9°F (2024) | 24.1°F (1996) | 0.45 in (2018) |