St. Marys, WV
Climate overview — based on NOAA 1991-2020 normals from NEWPORT, OH US.
Year-round temperatures (°F)
Climate summary
St. Marys has an annual average temperature of 53.1°F with about 45.4 inches of precipitation per year and 23.8 inches of snow. The warmest month is July (average high 84.3°F), and the coldest is January (average low 21.6°F). July is typically the wettest month (4.86 in) and November the driest (2.85 in). Snow typically falls from November through March.
Best time to visit St. Marys
Full guide →Climate change signal
All-time records →90 of 366 (24.6%) of St. Marys'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.
| 1980s | 33 | |
| 1990s | 107 | |
| 2000s | 85 | |
| 2010s | 106 | |
| 2020s | 35 |
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 | 39.4°F | 21.6°F | 30.5°F | 3.50 in | 8.9 in | 14 |
| February | 43.2°F | 23.1°F | 33.1°F | 3.21 in | 7.0 in | 12 |
| March | 52.8°F | 29.8°F | 41.3°F | 3.97 in | 3.9 in | 12 |
| April | 65.9°F | 39.5°F | 52.7°F | 3.70 in | 0.1 in | 12 |
| May | 74.0°F | 50.2°F | 62.1°F | 4.67 in | — | 14 |
| June | 81.2°F | 59.2°F | 70.2°F | 4.69 in | — | 11 |
| July | 84.3°F | 63.7°F | 74.0°F | 4.86 in | — | 12 |
| August | 83.5°F | 62.3°F | 72.9°F | 4.18 in | — | 9 |
| September | 77.9°F | 55.1°F | 66.5°F | 3.30 in | — | 8 |
| October | 66.6°F | 43.2°F | 54.9°F | 2.89 in | — | 8 |
| November | 54.2°F | 32.5°F | 43.4°F | 2.85 in | 0.3 in | 10 |
| December | 43.9°F | 26.5°F | 35.2°F | 3.58 in | 3.6 in | 13 |
Climate twins of St. Marys
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).