Florissant, Missouri Weather
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Weather Forecast for Florissant, Missouri : St. Louis County
Issued: 4:21 pm CDT Jul 3, 2025 Latitude: 38.789217 Longitude: -90.322614 View on Google Maps

MouseOver for Detail Forecast
Tonight Independence Day Saturday Sunday Monday Tuesday Wednesday Thursday
Cloudy on Tonight Mostly Sunny on Independence Day Sunny on Saturday 40% chance of thunderstorms on Sunday 40% chance of thunderstorms on Monday 30% chance of thunderstorms on Tuesday 50% chance of thunderstorms on Wednesday 40% chance of thunderstorms on Thursday
Low: 75°F High: 95°F High: 95°F High: 91°F High: 90°F High: 91°F High: 89°F High: 88°F
Low: 74°F Low: 75°F Low: 74°F Low: 72°F Low: 72°F Low: 71°F  
Cloudy Mostly Sunny Sunny Thunderstorms Thunderstorms Thunderstorms Thunderstorms Thunderstorms
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Current Conditions at
ST LOUIS - (KSTL)
91°
Feels like 93°F
Mostly Clear
as of 3:51 PM CDST
Rel. Humidity: 41%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 30.02 in.
Flight Rule: VFR
Wind Data
6 MPH
290° West
Cloud Level(s): Few at 6500ft
Current Conditions at
ST CHARLES - (KSET)
90°
Feels like 91°F
Clear
as of 3:54 PM CDST
Rel. Humidity: 43%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 30.00 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
ALTON - (KALN)
90°
Mostly Clear
as of 3:50 PM CDST
Rel. Humidity: 40%
Dew Point: 63°F
Visibility: 10 Miles
Pressure: 30.02 in.
Flight Rule: VFR
Wind Data
6 MPH
Cloud Level(s): Few at 5000ft
Current Conditions at
EAST ST LOUIS - (KCPS)
91°
Feels like 93°F
Partly Cloudy
as of 3:53 PM CDST
Rel. Humidity: 41%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 30.01 in.
Flight Rule: VFR
Wind Data
6 MPH
260° West
Cloud Level(s): Scattered at 6000ft
Cloudy on Tonight Tonight... Partly cloudy, with a low around 75. Light south wind.
Mostly Sunny on Independence Day Independence Day... Mostly sunny, with a high near 95. Calm wind becoming southeast 5 to 8 mph in the morning.
Mostly Clear on Friday Night Friday Night... Mostly clear, with a low around 74. Southeast wind 3 to 7 mph.
Sunny on Saturday Saturday... Sunny, with a high near 95. South wind 3 to 7 mph.
20% chance of thunderstorms Saturday Night Saturday Night... A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75. South wind 3 to 6 mph.
40% chance of thunderstorms Sunday Sunday... A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 91.
30% chance of thunderstorms Sunday Night Sunday Night... A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 74. Chance of precipitation is 30%.
40% chance of thunderstorms Monday Monday... A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
20% chance of thunderstorms Monday Night Monday Night... A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 72.
30% chance of thunderstorms Tuesday Tuesday... A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91.
40% chance of thunderstorms Tuesday Night Tuesday Night... A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.
50% chance of thunderstorms Wednesday Wednesday... A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 89.
40% chance of thunderstorms Wednesday Night Wednesday Night... A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
40% chance of thunderstorms Thursday Thursday... A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Current Radar Image


Sun Almanac for Florissant, Missouri
Sunrise: 05:41 AM
Sunset: 8:30 PM
Civil Sunrise:05:10 AM
Civil Sunset: 9:02 PM
Nautical Sunrise: 04:30 AM
Nautical Sunset: 9:42 PM
Astro Sunrise: 03:44 AM
Astro Sunset: 10:27 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.