Weather in St Louis in July 2025
Average weather
Average temperature in St Louis in July
Going from a maximum of +102°F during the day to a minimum of +63°F during the night, the temperature in July averages around +91°F.
The average maximum temperature goes down 18% by the end of the month, compared with the beginning of the month, from +95°F to +88°F.
Is St Louis warm or cold in July?
St Louis is typically hot in July.
Maximum temperatures go up compared to the previous month from +86°F to +88°F. The minimum temperature also goes up from +68°F to +72°F.
Make sure that you pack your summer linen and swimming costumes; it’s probably going to be hot.
July is one of the warmest months in St Louis, here is the comparison with other months:
Climate in St Louis in July
| June | July | August | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +86°F | +88°F | +88°F | ||||
| Min. temperature | ||||||
| +48°F | +52°F | +48°F | ||||
| Max. temperature | ||||||
| +106°F | +106°F | +104°F | ||||
| Rainfall | ||||||
| 108 mm | 101 mm | 88 mm | ||||
| Wind | ||||||
| 2 m/s | 2 m/s | 2 m/s | ||||
| Humidity | ||||||
| 69% | 70% | 71% | ||||
| Air pressure | ||||||
| 1013 HPa | 1014 HPa | 1015 HPa | ||||
| Sunny days | ||||||
| 8 | 10 | 10 | ||||
| Cloudy days | ||||||
| 5 | 5 | 6 | ||||
| Rainy days | ||||||
| 15 | 15 | 14 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
July weather is still as good as in June. It’s getting warmer as July arrives. The average maximum temperature goes up from +86°F to +88°F during the day. As July arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 108 mm to 101 mm. Humidity rises from 69% to 70%. The average wind speed doesn’t change much during July, staying around 2 m/s. The good news is there are likely to be more sunny days in July, from 8 to 10.
August brings much the same weather, it remains good.
Wind
The average wind speed is 2 m/s getting up to 3 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in St Louis is gradually increasing during July, going from 2 m/s to 2 m/s over the course of the month.
Rain
How was the weather last July in St Louis?
Climate Change Over the Years
The climate in St Louis in July has not changed that much over the last 43 years.
The average temperature was the lowest in 1979 (+64°F) and the highest in 2012 (+71°F). The driest year was 2007 with only 666 mm of rainfall, and the wettest year was 2020 with 1575 mm.
FAQ
Is July a good time to visit St Louis?
Can you sunbathe in St Louis in July?
Is St Louis rainy in July?
Is it sunny in St Louis in July?
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, 2023.
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.