The temperatures in St. Louis in May are comfortable with low of 12°C and and high up to 21°C.
You can expect rain for roughly half of the month of May in St. Louis. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in St. Louis in May 2025.
If you’re planning to visit St. Louis in the near future, we highly recommend that you review the 14 day weather forecast for St. Louis before you arrive.
Temperatures
21° / 12°
Rainy Days
10
Snowy Days
0
Dry Days
21
Rainfall
179
mm
Sun Hours
9.5
Hrs
