Weather in St. Louis: September
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Average day temperature: | 80.3°F |
| Average night temperature: | 65.9°F | |
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Number of sunny days: | 18 days |
| Day length: | 11.8 - 13.0 hours | |
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Number of rainy days: | 3 days |
| Precipitation totals: | 2.0 in. | |
| more information | ||
14 days
forecast
forecast
| St. Louis |
weather in
October
October
| St. Louis |
Air temperature in September, °F
Show year:
2023
2022
2021
The highest day temperature during September of 2023 was 92°F. At the same time the lowest night temperature was 55°F. Day and night temperature averages during September were 82.7°F and 64.6°F.
Sunny, partly cloudy and cloudy days
Mostly all days in September are sunny but cloudy days are also possible.
Precipitation total in September, in.
Precipitation total value in St. Louis in September is 1.8 in. Other months of the year show relatively similar values.
Wind speed in September, mph
The average wind speed value in September is 6.8 mph It makes September one of the least windy months of the year.
Average sunny hours
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 9.0.
Best time for vacation in St. Louis
St. Louis on a weather map
Places in USA:
Name
°F
24 Hours Forecast
St. Louis
Local time: 01:02
April 29, monday
0300
63°F
N
11 mph
11 mph
0600
61°F
N
9 mph
9 mph
0900
63°F
N
8 mph
8 mph
1200
70°F
E
8 mph
8 mph
1500
75°F
E
6 mph
6 mph
1800
72°F
SE
6 mph
6 mph
2100
64°F
S
4 mph
4 mph
April 30, tuesday
0000
61°F
S
6 mph
6 mph
