Mount Vernon, MO
Climate overview — based on NOAA 1991-2020 normals from MT VERNON UNIV MO - SW CTR, MO US.
Year-round temperatures (°F)
Climate summary
Mount Vernon has an annual average temperature of 56.4°F with about 45.5 inches of precipitation per year. The warmest month is July (average high 89.4°F), and the coldest is January (average low 22.2°F). May is typically the wettest month (5.86 in) and February the driest (2.28 in).
Best time to visit Mount Vernon
Full guide →Climate change signal
All-time records →0 of 366 (0%) of Mount Vernon'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.
| 1960s | 74 | |
| 1970s | 48 | |
| 1980s | 62 | |
| 1990s | 54 | |
| 2000s | 69 | |
| 2010s | 59 |
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 | 44.0°F | 22.2°F | 33.1°F | 2.38 in | — | 8 |
| February | 48.9°F | 26.0°F | 37.4°F | 2.28 in | — | 7 |
| March | 58.0°F | 35.3°F | 46.7°F | 3.67 in | — | 10 |
| April | 67.7°F | 44.4°F | 56.0°F | 4.55 in | — | 11 |
| May | 75.8°F | 54.3°F | 65.0°F | 5.86 in | — | 12 |
| June | 84.3°F | 63.6°F | 74.0°F | 5.25 in | — | 10 |
| July | 89.4°F | 67.1°F | 78.2°F | 4.01 in | — | 9 |
| August | 89.3°F | 64.9°F | 77.1°F | 3.03 in | — | 7 |
| September | 81.5°F | 56.8°F | 69.1°F | 4.70 in | — | 8 |
| October | 70.7°F | 44.7°F | 57.7°F | 2.95 in | — | 9 |
| November | 57.9°F | 34.5°F | 46.2°F | 3.93 in | — | 9 |
| December | 47.2°F | 26.4°F | 36.8°F | 2.84 in | — | 7 |
Climate twins of Mount Vernon
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).