Measurements:
°C
°F
St. Louis
28°F
N 6 mph
Feels like: 22°F
Precip: 0%
World Resorts USA St. Louis Weather September Weather in St. Louis

St. Louis Weather: September

Average Day Temperature: 83.7°F
Average Night Temperature: 67.5°F
Number of Sunny Days: 18 days
Sunshine Hours: 11.8 - 13.0 hours
Number of Rainy Days: 3 days
Precipitation Totals: 1.9 in

Air Temperature in September, °F

Select Year: 2024 2023 2022

The highest day temperature in September 2024 was 101°F. The lowest night temperature was 49°F. The average values for day and night temperatures during September were 84.8°F и 65.8°F respectivly.

Sunny, Cloudy and Gloomy days

Most of the days in September are sunny but you can also expect cloudy and gloomy days.

Precipitation Totals in September, in

Precipitation total in September for St. Louis is 1.9 in. It makes september one of the least rainy months of the year.

Wind Speed in September, mph

The average wind speed in September is 6.8 mph. It makes September one of the most windless months of the year for St. Louis.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for St. Louis in September is 8.7 hours.

Best Time to Visit St. Louis
The most sunny months:
June 19 days
September 18 days
July 17 days
The most warm months:
July 92.2 °F
August 90.6 °F
June 88.7 °F
The most cold months:
January 33.9 °F
February 39.3 °F
December 42.1 °F
The most rainy months:
June 7 days
May 7 days
July 6 days
The most windy months:
April 10 mph
March 10 mph
February 9 mph

St. Louis on the Weather Map

USA Resorts:
NAME
Boston +10
Chicago +20
Hawaii +78
Honolulu +78
Houston +46
Las Vegas +50
Los Angeles +54
Miami +62
New York +16
Orlando +50
San Diego +54
San Francisco +54
Sarasota +48
Tampa +46
Washington +20
24 Hours Weather Forecast
St. Louis
Local time: 04:06
22 dec, sunday
0600 28°F
NW
6 mph
0900 30°F
N
8 mph
1200 36°F
N
11 mph
1500 40°F
N
12 mph
1800 34°F
N
11 mph
2100 32°F
N
12 mph
23 dec, monday
0000 32°F
N
11 mph
0300 34°F
N
11 mph