Weather · Saint Louis, United States
Saint Louis Weather in May
May in Saint Louis averages 21°C by day and 9°C at night, with about 41mm of rain. That makes it one of the best months to visit.
Avg high
21°C
70°F
Avg low
9°C
48°F
Rainfall
41mm
#10 wettest of 12
What to pack
Layers, plus a jacket for mornings and nights. Rain is unlikely to interrupt your plans.
Timing a trip around the weather? A Local Friend in Saint Louis builds it around the season for you.