St. Louis May Weather

Averages and records for weather in St. Louis, Missouri in the month of May.
Typical St. Louis May Weather
1991–2020
Average daily high 77.0 °F
Average daily low 58.3 °F
Average monthly precipitation 4.8 inches
Average monthly snow 0.0 inches
Daily chance of precipitation 40.8%
Daily chance of snow 0.11%
St. Louis May Weather Records
1893–2024
Highest temperature 98 °F May 26, 1953
Lowest temperature 31 °F May 3, 1976
Highest daily low 76 °F May 28, 2012
Lowest daily high 43 °F May 1, 1940
Hottest average high temperature 85.1 °F 2018
Coldest average high temperature 67.7 °F 1924
Most daily precipitation 5.6 inches May 16, 1995
Most monthly precipitation 12.9 inches 1995
Most daily snow 4.0 inches May 2, 1929
Most monthly snow 4.0 inches 1929
Note: Daily averages are a moving average which includes 14 days before and after
Day Average (°F) Record (°F)
High Low High Low
May 1 72.4 52.9 88 34
May 2 72.6 53.3 91 32
May 3 72.7 53.6 92 31
May 4 72.9 53.8 92 33
May 5 73.2 54.1 93 38
May 6 73.5 54.4 92 34
May 7 73.8 54.7 93 35
May 8 74.1 55.1 90 36
May 9 74.5 55.5 92 35
May 10 74.9 55.9 91 31
May 11 75.2 56.3 94 35
May 12 75.6 56.7 93 39
May 13 76.0 57.1 91 40
May 14 76.4 57.5 93 37
May 15 76.7 57.9 94 39
May 16 77.1 58.3 93 40
May 17 77.4 58.6 94 40
May 18 77.9 59.0 94 39
May 19 78.2 59.4 94 40
May 20 78.3 59.7 93 41
May 21 78.5 59.9 93 43
May 22 78.7 60.1 94 40
May 23 78.9 60.3 92 40
May 24 79.2 60.6 92 40
May 25 79.4 60.9 93 38
May 26 79.7 61.2 98 38
May 27 80.1 61.5 96 38
May 28 80.5 62.0 94 42
May 29 80.9 62.4 94 41
May 30 81.2 62.8 96 43
May 31 81.5 63.1 96 43
Weather Station Details
Years Station Coordinates
1939–2024 St. Louis International Airport location
1893–1938 St. Louis location