October weather in Grafton, WI
The average temperature in Grafton in October is 51.5°F (42.6°F–60.5°F). Average precipitation: 2.98 inches.
October is a fall month in Grafton, and is warmer than the annual average of 47.8°F. Daily temperatures swing about 17.9°F between overnight low and afternoon high. Daylight averages about 10h 47m. For travel, October is a comfortable month to visit.
Avg High
60.5°F
Avg Low
42.6°F
Precipitation
2.98 in
Daylight
10h 47m
October records in Grafton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 86.0°F (2019) | 37.9°F (2009) | 0.85 in (2018) |
| October 2 | 84.0°F (2023) | 35.1°F (2020) | 3.25 in (2019) |
| October 3 | 82.9°F (2023) | 32.0°F (2020) | 0.80 in (2014) |
| October 4 | 87.1°F (2025) | 37.0°F (2010) | 2.23 in (2013) |
| October 5 | 87.1°F (2025) | 32.0°F (2020) | 0.15 in (2013) |
| October 6 | 82.9°F (2025) | 35.1°F (2012) | 0.95 in (2018) |
| October 7 | 77.0°F (2010) | 35.1°F (2012) | 0.33 in (2009) |
| October 8 | 80.1°F (2011) | 28.9°F (2012) | 0.65 in (2021) |
| October 9 | 82.0°F (2018) | 36.0°F (2022) | 0.18 in (2015) |
| October 10 | 84.0°F (2018) | 32.0°F (2009) | 0.03 in (2021) |
| October 11 | 81.0°F (2010) | 26.1°F (2009) | 0.67 in (2017) |
| October 12 | 79.0°F (2015) | 30.9°F (2012) | 0.48 in (2019) |
| October 13 | 73.9°F (2015) | 30.0°F (2018) | 0.96 in (2012) |
| October 14 | 73.9°F (2015) | 30.0°F (2018) | 2.35 in (2023) |
| October 15 | 69.1°F (2021) | 30.0°F (2018) | 0.63 in (2025) |
| October 16 | 66.0°F (2015) | 32.0°F (2018) | 0.91 in (2016) |
| October 17 | 71.1°F (2010) | 30.9°F (2015) | 0.03 in (2013) |
| October 18 | 77.0°F (2016) | 28.9°F (2009) | 0.82 in (2012) |
| October 19 | 75.0°F (2025) | 28.9°F (2020) | 0.80 in (2025) |
| October 20 | 75.0°F (2021) | 28.9°F (2020) | 0.19 in (2011) |
| October 21 | 80.1°F (2024) | 28.9°F (2018) | 0.27 in (2015) |
| October 22 | 82.0°F (2024) | 30.0°F (2013) | 0.30 in (2019) |
| October 23 | 75.9°F (2022) | 30.0°F (2013) | 1.72 in (2009) |
| October 24 | 70.0°F (2016) | 30.0°F (2020) | 1.25 in (2010) |
| October 25 | 79.0°F (2023) | 26.1°F (2020) | 0.27 in (2021) |
| October 26 | 72.0°F (2012) | 26.1°F (2020) | 0.96 in (2016) |
| October 27 | 64.9°F (2023) | 28.9°F (2012) | 1.47 in (2016) |
| October 28 | 73.0°F (2014) | 28.0°F (2020) | 1.04 in (2015) |
| October 29 | 69.1°F (2024) | 28.0°F (2010) | 0.25 in (2021) |
| October 30 | 82.0°F (2024) | 28.0°F (2020) | 0.46 in (2009) |
| October 31 | 78.1°F (2024) | 25.0°F (2020) | 0.37 in (2018) |