Weather By Day

May St Louis Weather 
May St Louis Weather
Record High: 98°F
Normal High: 76°F
Normal Low: 57°F
Record Low: 31°F
Avg Monthly Rain: 4.11"
Rec 1 Day Rain: 5.59"

St Louis Weather In May

The hottest day in St Louis Missouri in May for the past 53 years was 98 degrees Fahrenheit, most recently measured on May 25, 1953, and the regular high is 76. The lowest reported temperature in May for St Louis for the past 53 years was 31 most recently encountered on May 7, 1976, and the mean daily low in the month is 57.

According to National Weather Service historical St Louis May Weather data, on May 5, 1978, the high temperature did not exceed 47 degrees Fahrenheit, the lowest high measured in St Louis in the past 53 years. Weather Service records additionally show that on May 30, 1991, the recorded low temperature for the day did not drop below 76 degrees, the highest low measured in St Louis in the last 53 years.

NWS data indicates that the daily high temperature in St Louis on May First averages 72 degrees Fahrenheit and the high on the last day of May averages 81 degrees. The low measured temperature in St Louis on May First averages 51 degrees and the low on the last day of the month averages 61 degrees.

St Louis normally receives an average of 4.11 inches of rain during May. The most precipitation measured in a single day, as indicated by May St Louis Weather data, was 5.59 inches on May 17, 1995.