Weather in Saint Louis: May
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Average day temperature: | 84.4°F |
| Average night temperature: | 70.9°F | |
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Sea water temperature: | 69.1°F |
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Number of sunny days: | 30 days |
| Day length: | 12.7 - 13.0 hours | |
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Number of rainy days: | 0 days |
| Precipitation totals: | 0.0 in. | |
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forecast
| Saint Louis |
temperature
| Saint Louis |
Air temperature in May, °F
The highest day temperature during May of 2025 was 81°F. At the same time the lowest night temperature was 65°F. Daily and nightly averages during May were 73.6°F and 68.5°F.
Sea water temperature in Saint Louis in May, °F
The average sea water temperature in May of 2025 was 69.8°F. The highest and lowest sea temperatures during the month were 73.6°F and 66.4°F.
Almost all days of May in Saint Louis are sunny. Cloudy days are rare.
Precipitation total in May, in.
Precipitation total value in Saint Louis in May is 0.0 in. Other months of the year show relatively similar values.
The average wind speed value in May is 15.0 mph It makes May one of the most windy months of the year.
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 May is: 11.6.
Best time for vacation in Saint Louis
Saint Louis on a weather map
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