October weather in Marietta, IL
The average temperature in Marietta in October is 54.5°F (43.0°F–66.0°F). Average precipitation: 2.99 inches.
October is a fall month in Marietta, and is warmer than the annual average of 51.5°F. Daily temperatures swing about 23°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 10h 54m. For travel, October is a comfortable month to visit.
Avg High
66.0°F
Avg Low
43.0°F
Precipitation
2.99 in
Daylight
10h 54m
October records in Marietta
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 90.0°F (2007) | 37.9°F (2003) | 0.29 in (2007) |
| October 2 | 89.1°F (2019) | 30.0°F (2003) | 0.71 in (2014) |
| October 3 | 90.0°F (2006) | 26.1°F (2003) | 1.75 in (2014) |
| October 4 | 93.9°F (2006) | 34.0°F (2014) | 0.90 in (2013) |
| October 5 | 88.0°F (2005) | 34.0°F (2004) | 1.15 in (2018) |
| October 6 | 89.1°F (2007) | 28.0°F (2012) | 0.80 in (2018) |
| October 7 | 90.0°F (2007) | 28.0°F (2012) | 1.07 in (2018) |
| October 8 | 91.9°F (2007) | 32.0°F (2012) | 1.01 in (2004) |
| October 9 | 84.9°F (2011) | 32.0°F (2012) | 0.60 in (2009) |
| October 10 | 89.1°F (2010) | 33.1°F (2009) | 0.22 in (2009) |
| October 11 | 84.0°F (2010) | 32.0°F (2009) | 1.92 in (2017) |
| October 12 | 82.9°F (2010) | 28.9°F (2006) | 1.67 in (2021) |
| October 13 | 86.0°F (2024) | 27.0°F (2006) | 0.25 in (2018) |
| October 14 | 77.0°F (2017) | 28.0°F (2006) | 1.87 in (2012) |
| October 15 | 81.0°F (2020) | 28.9°F (2006) | 2.04 in (2017) |
| October 16 | 80.1°F (2016) | 28.0°F (2018) | 0.66 in (2001) |
| October 17 | 81.0°F (2016) | 28.0°F (2004) | 0.65 in (2006) |
| October 18 | 90.0°F (2016) | 26.1°F (2022) | 0.47 in (2012) |
| October 19 | 78.1°F (2005) | 24.1°F (2022) | 0.57 in (2004) |
| October 20 | 79.0°F (2003) | 24.1°F (2022) | 0.05 in (2012) |
| October 21 | 84.0°F (2003) | 25.0°F (2018) | 0.69 in (2005) |
| October 22 | 84.0°F (2007) | 25.0°F (2018) | 0.56 in (2020) |
| October 23 | 82.0°F (2020) | 26.1°F (2006) | 2.86 in (2004) |
| October 24 | 77.0°F (2012) | 26.1°F (2006) | 0.65 in (2021) |
| October 25 | 82.9°F (2012) | 24.1°F (2013) | 2.61 in (2021) |
| October 26 | 82.0°F (2011) | 23.0°F (2013) | 1.52 in (2022) |
| October 27 | 73.9°F (2014) | 26.1°F (2013) | 0.97 in (2004) |
| October 28 | 79.0°F (2014) | 25.0°F (2008) | 0.62 in (2015) |
| October 29 | 75.0°F (2016) | 24.1°F (2008) | 0.41 in (2021) |
| October 30 | 84.9°F (2024) | 24.1°F (2017) | 1.35 in (2009) |
| October 31 | 82.0°F (2024) | 24.1°F (2023) | 1.44 in (2013) |