St. Louis, MI Weather & Climate Normals
St. Louis's real weather, in one number
St. Louis, MI scores 44/100 on this site's reading of NOAA's own 30-year normals: strongly seasonal. Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. 5 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
St. Louis's hottest and coldest months
St. Louis's hottest month is Jul, averaging 71°F; its coldest is Jan, averaging 22°F, a 48.7°F swing across the year, one of the widest gaps in this dataset.
St. Louis's weather across the year
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 29°F | 15°F | 2.17in | 10.7in |
| Feb | 32°F | 15°F | 1.76in | 9.9in |
| Mar | 43°F | 23°F | 2.1in | 5.4in |
| Apr | 56°F | 35°F | 3.46in | 2.1in |
| May | 69°F | 46°F | 3.73in | 0in |
| Jun | 78°F | 56°F | 3.64in | 0in |
| Jul | 82°F | 59°F | 3.26in | 0in |
| Aug | 80°F | 58°F | 3.71in | 0in |
| Sep | 73°F | 50°F | 2.73in | 0in |
| Oct | 60°F | 39°F | 3.24in | 0.3in |
| Nov | 46°F | 30°F | 2.66in | 2.7in |
| Dec | 35°F | 22°F | 2.04in | 8.2in |
May, Jun, Jul, Aug, and Sep are the best time to see St. Louis at its mildest; the rest of the year, plan around Jan's cold.
Rain and snow in St. Louis
St. Louis averages 34.5in of precipitation a year across roughly 131 days with measurable rain or snow, and 39.3in of snow a year.
Where St. Louis ranks
St. Louis ranks 3888 of 4876 US cities in this dataset for comfort score, and 109 of 153 within MI. About 7,465 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from Alma, MI US, 2.4 miles from St. Louis, not a prediction for any specific day.
More on how this is worked out
What a 30-year climate normal actually is · Why this uses the nearest NOAA station