Weather in Saint Louis: January
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Average day temperature: | 84.1°F |
| Average night temperature: | 69.5°F | |
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Sea water temperature: | 67.0°F |
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Number of sunny days: | 26 days |
| Day length: | 11.2 - 11.4 hours | |
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Number of rainy days: | 0 days |
| Precipitation totals: | 0.0 in. | |
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| Saint Louis |
temperature
| Saint Louis |
Air temperature in January, °F
| Day temperature | Night temperature |
The highest day temperature during January of 2025 was 86°F. At the same time the lowest night temperature was 61°F. Daily and nightly averages during January were 78.7°F and 67.0°F.
Sea water temperature in Saint Louis in January, °F
The average sea water temperature in January of 2025 was 65.1°F. The highest and lowest sea temperatures during the month were 69.4°F and 62.8°F.
| Sunny days | |
| Partly cloudy days | |
| Cloudy days |
Mostly all days in January are sunny but cloudy days are also possible.
Precipitation total in January, in.
Precipitation total value in Saint Louis in January is 0.0 in. Other months of the year show relatively similar values.
The average wind speed value in January is 13.5 mph
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 January is: 9.7.
Best time for vacation in Saint Louis
Saint Louis on a weather map
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