| National Weather Service Forecast for:
Florissant MO Issued by: National Weather Service Saint Louis, MO |
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| Updated: 8:21 pm CST Dec 22, 2025 | ||||||||||||||||||
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| Tonight |
Partly cloudy, with a low around 45. South wind 6 to 9 mph. |
| Tuesday |
Partly sunny, with a high near 61. Southwest wind 5 to 7 mph becoming light and variable in the afternoon. |
| Tuesday Night |
Patchy fog between 10pm and 4am. Otherwise, mostly cloudy, with a low around 43. Calm wind becoming east around 6 mph after midnight. |
| Wednesday |
Mostly cloudy, with a high near 66. Southeast wind 6 to 9 mph. |
| Wednesday Night |
Mostly cloudy, with a low around 55. South wind 5 to 7 mph becoming west after midnight. |
| Christmas Day |
Mostly cloudy, with a high near 69. |
| Thursday Night |
Mostly cloudy, with a low around 60. |
| Friday |
Sunny, with a high near 70. |
| Friday Night |
Partly cloudy, with a low around 49. |
| Saturday |
Mostly cloudy, with a high near 70. |
| Saturday Night |
A 20 percent chance of rain. Mostly cloudy, with a low around 37. |
| Sunday |
Mostly sunny, with a high near 45. |
| Sunday Night |
Partly cloudy, with a low around 23. |
| Monday |
Mostly sunny, with a high near 36. |
Forecast from NOAA-NWS for Florissant MO.
