October weather in St. Marys, PA
The average temperature in St. Marys in October is 47.8°F (37.0°F–58.7°F). Average precipitation: 3.87 inches. Average snowfall is 0.5 inches.
October is a fall month in St. Marys, and is warmer than the annual average of 45.1°F. Daily temperatures swing about 21.7°F between overnight low and afternoon high. Expect about 15 days with precipitation. Daylight averages about 10h 51m. For travel, October is cool.
Avg High
58.7°F
Avg Low
37.0°F
Precipitation
3.87 in
Snow
0.5 in
October records in St. Marys
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 73.9°F (2023) | 32.0°F (2017) | 1.35 in (1981) |
| October 2 | 84.0°F (2019) | 30.9°F (2017) | 1.93 in (1945) |
| October 3 | 84.0°F (2019) | 26.1°F (2003) | 1.33 in (1969) |
| October 4 | 81.0°F (2023) | 26.1°F (2003) | 1.35 in (1986) |
| October 5 | 81.0°F (2007) | 27.0°F (2003) | 0.71 in (2018) |
| October 6 | 82.9°F (2007) | 28.9°F (2003) | 1.53 in (2000) |
| October 7 | 82.9°F (2007) | 28.0°F (2003) | 1.25 in (2019) |
| October 8 | 82.0°F (2007) | 28.9°F (2008) | 1.95 in (1998) |
| October 9 | 84.0°F (2007) | 28.9°F (1969) | 0.70 in (1959) |
| October 10 | 81.0°F (2018) | 30.0°F (1969) | 0.89 in (1946) |
| October 11 | 78.1°F (2018) | 30.0°F (2004) | 1.46 in (1970) |
| October 12 | 75.0°F (2010) | 28.0°F (2014) | 2.02 in (2006) |
| October 13 | 79.0°F (2008) | 24.1°F (2012) | 2.55 in (1970) |
| October 14 | 78.1°F (2008) | 26.1°F (2012) | 1.71 in (1983) |
| October 15 | 73.9°F (2014) | 26.1°F (1969) | 1.50 in (1955) |
| October 16 | 73.9°F (2014) | 26.1°F (1969) | 2.07 in (1954) |
| October 17 | 72.0°F (2012) | 24.1°F (2020) | 0.74 in (1942) |
| October 18 | 71.1°F (2016) | 19.9°F (2009) | 1.54 in (2006) |
| October 19 | 75.0°F (2016) | 23.0°F (2009) | 2.63 in (1996) |
| October 20 | 70.0°F (2006) | 21.9°F (2009) | 2.28 in (2006) |
| October 21 | 75.9°F (2016) | 26.1°F (2008) | 2.06 in (1995) |
| October 22 | 75.9°F (2007) | 30.0°F (2010) | 1.25 in (2016) |
| October 23 | 79.0°F (2024) | 18.0°F (1969) | 1.09 in (1965) |
| October 24 | 78.1°F (2020) | 14.0°F (1969) | 1.91 in (1959) |
| October 25 | 78.1°F (2020) | 15.1°F (1969) | 1.10 in (2015) |
| October 26 | 78.1°F (2012) | 25.0°F (1969) | 1.97 in (1980) |
| October 27 | 73.9°F (2023) | 26.1°F (2016) | 0.90 in (1978) |
| October 28 | 73.0°F (2023) | 26.1°F (2011) | 1.32 in (1981) |
| October 29 | 73.9°F (2014) | 19.0°F (1969) | 1.40 in (2017) |
| October 30 | 69.1°F (2019) | 19.9°F (1969) | 1.92 in (1973) |
| October 31 | 73.9°F (2024) | 19.9°F (1969) | 0.83 in (1996) |