April weather in St. Marys, PA
The average temperature in St. Marys in April is 43.7°F (31.0°F–56.4°F). Average precipitation: 3.95 inches. Average snowfall is 2.0 inches.
April is a spring month in St. Marys, and is cooler than the annual average of 45.1°F. Daily temperatures swing about 25.4°F between overnight low and afternoon high. Expect about 15 days with precipitation. Daylight averages about 13h 7m. For travel, April is cool.
Avg High
56.4°F
Avg Low
31.0°F
Precipitation
3.95 in
Snow
2.0 in
April records in St. Marys
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| April 1 | 73.9°F (2006) | 10.0°F (1969) | 1.12 in (2023) |
| April 2 | 79.0°F (2010) | 19.0°F (2013) | 1.30 in (1970) |
| April 3 | 84.0°F (2010) | 15.1°F (2013) | 1.47 in (1977) |
| April 4 | 82.0°F (2010) | 14.0°F (2013) | 1.87 in (2000) |
| April 5 | 69.1°F (1969) | 12.9°F (2016) | 1.90 in (2003) |
| April 6 | 82.9°F (2023) | 12.9°F (2016) | 1.10 in (1969) |
| April 7 | 81.0°F (2010) | 15.1°F (2007) | 0.79 in (2017) |
| April 8 | 80.1°F (2010) | 16.0°F (1979) | 0.75 in (2014) |
| April 9 | 75.9°F (2010) | 14.0°F (2025) | 0.94 in (1979) |
| April 10 | 73.9°F (1969) | 12.9°F (2016) | 1.35 in (1998) |
| April 11 | 77.0°F (2017) | 12.9°F (2016) | 1.53 in (1990) |
| April 12 | 77.0°F (2011) | 21.9°F (1969) | 1.81 in (2024) |
| April 13 | 77.0°F (2023) | 19.9°F (2009) | 1.09 in (1997) |
| April 14 | 82.0°F (2023) | 19.9°F (2009) | 1.27 in (2004) |
| April 15 | 86.0°F (2023) | 23.0°F (2016) | 1.20 in (2019) |
| April 16 | 75.9°F (2023) | 16.0°F (2014) | 1.42 in (2018) |
| April 17 | 82.0°F (2012) | 17.1°F (2014) | 1.35 in (1972) |
| April 18 | 78.1°F (2016) | 19.0°F (2025) | 0.81 in (1967) |
| April 19 | 81.0°F (2004) | 26.1°F (1979) | 0.74 in (1965) |
| April 20 | 82.0°F (2008) | 19.0°F (1969) | 1.16 in (1963) |
| April 21 | 82.0°F (1966) | 19.0°F (1969) | 1.27 in (2017) |
| April 22 | 82.0°F (2023) | 21.0°F (2020) | 0.83 in (2000) |
| April 23 | 78.1°F (2007) | 21.0°F (2024) | 1.04 in (2011) |
| April 24 | 78.1°F (2007) | 24.1°F (2014) | 0.78 in (1977) |
| April 25 | 84.0°F (2022) | 25.0°F (2015) | 1.00 in (1961) |
| April 26 | 84.9°F (2009) | 23.0°F (2006) | 1.41 in (2004) |
| April 27 | 84.9°F (2009) | 24.1°F (2006) | 1.30 in (1959) |
| April 28 | 87.1°F (2009) | 24.1°F (2012) | 1.32 in (1954) |
| April 29 | 81.0°F (2009) | 25.0°F (2012) | 2.58 in (1981) |
| April 30 | 84.0°F (2024) | 25.0°F (2008) | 1.49 in (1996) |