Climate normals · 1970–2000
St. Louis Climate
St. Louis is a city in United States (MO) with a population of about 279,695. Its average annual temperature is 13.4°C (56°F), with roughly 976 mm of rain per year.
13.4°C
Avg Temp
976
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
St. Louis Climate
St. Louis has an average annual temperature of 13.4°C (56°F) and receives about 976 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
13.4°C
Avg Temp
976
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -1° / 29° | 51 mm |
| February | 2° / 35° | 56 mm |
| March | 7° / 45° | 89 mm |
| April | 14° / 56° | 94 mm |
| May | 19° / 67° | 103 mm |
| June | 24° / 76° | 93 mm |
| July | 27° / 80° | 95 mm |
| August | 25° / 78° | 81 mm |
| September | 21° / 70° | 82 mm |
| October | 15° / 58° | 70 mm |
| November | 8° / 46° | 86 mm |
| December | 1° / 35° | 76 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit St. Louis
The most comfortable months to visit St. Louis are typically September, May and June, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 32°C high). The coldest is January (near -6°C low). May is usually the wettest month.
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Frequently Asked Questions
The most comfortable months to visit St. Louis are typically September, May and June, when temperatures are mildest and rainfall is relatively low (1970–2000 climate normals).
St. Louis, United States has an average annual temperature of 13.4°C and about 976 mm of precipitation per year. The warmest month is July and the coldest is January.
In July, the hottest month, daily highs in St. Louis average about 32°C (90°F).
Monthly climate normals (1970–2000) sampled from WorldClim 2.1 at ~9 km resolution. Humidity derived from vapor pressure. City coordinates and population from GeoNames.