Perryville, MD
Climate overview — based on NOAA 1991-2020 normals from CONOWINGO DAM, MD US.
Year-round temperatures (°F)
Climate summary
Perryville has an annual average temperature of 55.4°F with about 48.3 inches of precipitation per year. The warmest month is July (average high 87.5°F), and the coldest is January (average low 24.9°F). September is typically the wettest month (5.05 in) and February the driest (2.64 in).
Best time to visit Perryville
Full guide →Climate change signal
All-time records →28 of 366 (7.7%) of Perryville's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1930s | 16 | |
| 1940s | 18 | |
| 1950s | 38 | |
| 1960s | 30 | |
| 1970s | 32 | |
| 1980s | 28 | |
| 1990s | 93 | |
| 2000s | 66 | |
| 2010s | 23 | |
| 2020s | 22 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 40.1°F | 24.9°F | 32.5°F | 3.63 in | — | 11 |
| February | 43.0°F | 26.3°F | 34.6°F | 2.64 in | — | 9 |
| March | 51.0°F | 33.6°F | 42.3°F | 4.18 in | — | 11 |
| April | 63.9°F | 43.8°F | 53.9°F | 3.44 in | — | 10 |
| May | 73.5°F | 54.0°F | 63.7°F | 3.86 in | — | 11 |
| June | 82.7°F | 64.0°F | 73.3°F | 4.46 in | — | 10 |
| July | 87.5°F | 68.5°F | 78.0°F | 4.69 in | — | 9 |
| August | 85.3°F | 67.0°F | 76.2°F | 4.54 in | — | 9 |
| September | 78.8°F | 60.0°F | 69.4°F | 5.05 in | — | 9 |
| October | 66.9°F | 47.9°F | 57.4°F | 4.50 in | — | 8 |
| November | 55.0°F | 36.6°F | 45.8°F | 3.23 in | — | 8 |
| December | 45.0°F | 30.6°F | 37.8°F | 4.04 in | — | 10 |
Climate twins of Perryville
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).