| National Weather Service Forecast for:
Florissant MO Issued by: National Weather Service Saint Louis, MO |
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| Updated: 5:26 pm CST Dec 16, 2025 | ||||||||||||||||||
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| Tonight |
Mostly cloudy, with a low around 37. South wind 6 to 9 mph becoming west after midnight. |
| Wednesday |
Sunny, with a high near 54. Calm wind becoming southeast 5 to 7 mph in the afternoon. |
| Wednesday Night |
A 20 percent chance of showers after midnight. Increasing clouds, with a temperature falling to near 44 by 9pm, then rising to around 53 during the remainder of the night. South wind 8 to 15 mph, with gusts as high as 24 mph. |
| Thursday |
Showers and possibly a thunderstorm before noon, then a chance of showers between noon and 3pm. Temperature falling to around 44 by 5pm. South wind 15 to 17 mph becoming west in the morning. Winds could gust as high as 30 mph. Chance of precipitation is 90%. |
| Thursday Night |
Partly cloudy, with a low around 23. West wind 11 to 18 mph, with gusts as high as 28 mph. |
| Friday |
Sunny, with a high near 38. |
| Friday Night |
Partly cloudy, with a low around 34. |
| Saturday |
Mostly sunny, with a high near 55. |
| Saturday Night |
Partly cloudy, with a low around 31. |
| Sunday |
Mostly sunny, with a high near 45. |
| Sunday Night |
Mostly cloudy, with a low around 32. |
| Monday |
Partly sunny, with a high near 46. |
| Monday Night |
Mostly cloudy, with a low around 39. |
| Tuesday |
Partly sunny, with a high near 56. |
Forecast from NOAA-NWS for Florissant MO.
