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When is the best time to visit St Louis?
In general the best time to visit St Louis is probably August, when the weather is usually great. The hottest months are June, July, August, while the coldest months are January, February, December.
Depending on the activities you want to experience, you may choose different months to visit:
- The best time for a sun tanning holiday is June, July, August. Average maximum temperatures are up to +88°F in August and it has 10 sunny days on average.
- In general, it’s pleasant to walk and do outdoor activities during April - October.
- If you want to avoid wet weather, then your choice is January, November, December with the lowest chance of rain.
Average weather in St Louis in different months
This is the average weather in St Louis for each month based on historic data:
April, May, June, July, August, September, October, November usually has good weather. Average maximum temperature reaches +88°F during July.
In January, February, March, December the weather is average. Expect around 31 rainy days, and the precipitation amounts to approximately 96 mm in March.
Climate in St Louis
Here is the detailed breakdown of the climate in St Louis for each month:
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum Temperature | |||||||||||
| +72°F | +77°F | +86°F | +91°F | +93°F | +106°F | +106°F | +104°F | +100°F | +93°F | +82°F | +75°F |
| Average Maximum Temperature | |||||||||||
| +41°F | +45°F | +57°F | +68°F | +77°F | +86°F | +88°F | +88°F | +81°F | +68°F | +55°F | +45°F |
| Minimum Temperature | |||||||||||
| -17°F | -11°F | -6°F | +23°F | +37°F | +48°F | +52°F | +48°F | +36°F | +25°F | 0°F | -17°F |
| Avg. water temperature | |||||||||||
| - | - | - | - | - | - | - | - | - | - | - | - |
| Humidity, % | |||||||||||
| 73 | 71 | 67 | 64 | 68 | 69 | 70 | 71 | 70 | 69 | 71 | 74 |
| Rain, mm | |||||||||||
| 43 | 51 | 96 | 113 | 130 | 108 | 101 | 88 | 81 | 89 | 86 | 57 |
| Snow, mm | |||||||||||
| 22 | 15 | 8 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 13 |
| Average wind speed, m/s | |||||||||||
| 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 |
| Sunny Days | |||||||||||
| 7 | 6 | 7 | 8 | 7 | 8 | 10 | 10 | 12 | 11 | 9 | 7 |
| Cloud Days | |||||||||||
| 12 | 10 | 9 | 6 | 6 | 5 | 5 | 6 | 6 | 7 | 9 | 12 |
| Rainy Days | |||||||||||
| 5 | 6 | 13 | 15 | 17 | 15 | 15 | 14 | 12 | 12 | 10 | 7 |
| Snowy Days | |||||||||||
| 7 | 6 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 |
Average Temperature
Here are the average maximum and minimum temperatures in St Louis during the whole year:
The hottest month in St Louis is August with average maximum temperature going up to +88°F. The coldest month is January with the lowest temperatures of +25°F.
Humidity
The temperature feels different depending on humidity. Here is how humidity in St Louis looks throughout the year, in %:
The most humid month in St Louis is December with average humidity going up to 74%. The least humid month is April with an average humidity of 64%.
Rain
Amount of rainfall in mm. in St Louis during the whole year based on historical data:
The sunniest and driest month is September with approximately 12 sunny days and a total precipitation of around 81 mm. The rainiest and wettest month is May with approximately 17 rainy days and 130 mm of total precipitation.
Snow
Amount of snow in mm. in St Louis during the whole year based on historical data:
The snowiest month is January with approximately 7 snowy days.
FAQ
Frequently asked questions about the weather in St Louis:
What is the hottest month in St Louis?
The hottest month in St Louis is August with average maximum temperature of +88°F.
What is the coldest month in St Louis?
The coldest month in St Louis is January with minimum temperatures of +25°F.
Is St Louis worth visiting in winter?
Winter in St Louis could be a good time to visit, as the weather is generally ok.
When does it rain the least in St Louis?
if you're looking to visit St Louis when it rains the least, you should plan your trip for May, April, June. During this time, rainfall is rare with the driest month being January with only 43 mm of rain.
Other cities in USA
Check out the weather for other cities in USA.
Monthly weather in St Louis
Source of the data
For this page, we’ve looked at the typical weather in St Louis, based on historical hourly weather data from January 1, 1979, to December 31, 2022.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.