St. Louis, MO 14-Day Forecast
Missouri, United States 🇺🇸
The 14-day forecast for St. Louis is temporarily unavailable - please check back shortly. Meanwhile, the monthly averages below give a reliable picture of what to expect.
St. Louis 14-day outlook: the story
Aim for September to November and April if you get the choice: warm days, manageable rainfall and plenty of daylight line up, and highs average 68°F (20°C) against roughly 9 wet days a month. For the same question asked the other way round, see where else is warm in September.
For typical conditions month by month, see the St. Louis climate & average temperatures guide.
Average temperatures in St. Louis by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 41° | 25° | 9 | 3.2 in | 5.7 h/day | 9.7 h | 28% | 69% |
| February | 46° | 27° | 8 | 2.7 in | 7.1 h/day | 10.7 h | 30% | 66% |
| March | 57° | 38° | 13 | 5.5 in | 7.5 h/day | 11.8 h | 41% | 67% |
| April | 66° | 46° | 11 | 5.0 in | 9.0 h/day | 13.2 h | 38% | 65% |
| May | 76° | 58° | 14 | 5.4 in | 10.2 h/day | 14.3 h | 46% | 71% |
| June | 86° | 67° | 11 | 4.5 in | 11.6 h/day | 14.8 h | 36% | 68% |
| July | 88° | 71° | 13 | 6.9 in | 11.8 h/day | 14.6 h | 43% | 73% |
| August | 85° | 69° | 13 | 5.4 in | 11.0 h/day | 13.7 h | 41% | 74% |
| September | 82° | 63° | 8 | 4.7 in | 10.2 h/day | 12.4 h | 27% | 69% |
| October | 69° | 51° | 9 | 3.6 in | 8.1 h/day | 11.1 h | 28% | 67% |
| November | 55° | 38° | 9 | 3.3 in | 7.0 h/day | 10.0 h | 30% | 69% |
| December | 47° | 31° | 8 | 3.2 in | 6.0 h/day | 9.5 h | 25% | 71% |
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