Live Weather & Forecast

Weather in Florissant

Missouri, United States · Real-time conditions & 3-day outlook

Flag of United States
Partly cloudy
19°C
Feels like 19°C
67°F / Feels 67°F
Partly cloudy
Florissant, Missouri
🌞 Daytime
Updated: 2026-04-12 08:45
💧
Humidity
66%
💨
Wind
18.4 km/h S
🌬️
Wind Gust
29.3 km/h
🌡️
Pressure
1019 mb
👁️
Visibility
16 km
☀️
UV Index
0.5 (Low)
🌧️
Precipitation
0 mm
☁️
Cloud Cover
75%
💦
Dew Point
13.2°C
🌐
Wind Degree
183°

Air Quality Index

US EPA: Good UK DEFRA: Low (1)
CO
160.9 μg/m³
NO₂
3.2 μg/m³
O₃
118 μg/m³
SO₂
2.9 μg/m³
PM 2.5
6.6 μg/m³
PM 10
7.1 μg/m³

Weather Alerts 2

Met · Severe · Immediate
Flood Warning issued April 11 at 11:35AM CDT by NWS St Louis MO

...The Flood Warning continues for the following river in Missouri and Illinois... Mississippi River at Clarksville. Mississippi River at Louisiana. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Mississippi River at Clarksville. * WHEN...Until further notice....

Motorists should not attempt to drive around barricades or drive cars through flooded areas. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx

Effective: 2026-04-11T11:35:00-05:00  ·  Expires: 2026-04-12T23:45:00-05:00
Met · Severe · Immediate
Flood Warning issued April 11 at 9:46PM CDT by NWS St Louis MO

...The Flood Warning continues for the following rivers in Missouri...Illinois... Mississippi River at Hannibal. Mississippi River at Clarksville. Mississippi River at Louisiana. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Mississippi River at Clarksville....

Motorists should not attempt to drive around barricades or drive cars through flooded areas. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx

Effective: 2026-04-11T21:46:00-05:00  ·  Expires: 2026-04-13T10:00:00-05:00

Today's Hourly Forecast

24-hour breakdown for Florissant, Missouri

12 AM
Clear
17°
Clear
💧 80% 💨 15.1 km/h
1 AM
Clear
17°
Clear
💧 82% 💨 15.8 km/h
2 AM
Clear
17°
Clear
💧 80% 💨 15.8 km/h
3 AM
Clear
17°
Clear
💧 79% 💨 14.4 km/h
4 AM
Clear
16°
Clear
💧 79% 💨 15.1 km/h
5 AM
Clear
16°
Clear
💧 82% 💨 14.4 km/h
6 AM
Clear
16°
Clear
💧 82% 💨 14 km/h
7 AM
Sunny
17°
Sunny
💧 82% 💨 15.1 km/h
8 AM
Partly cloudy
19°
Partly cloudy
💧 66% 💨 18.4 km/h
9 AM
Sunny
20°
Sunny
💧 67% 💨 22 km/h
10 AM
Sunny
24°
Sunny
💧 59% 💨 24.8 km/h
11 AM
Sunny
26°
Sunny
💧 51% 💨 26.3 km/h
12 PM
Sunny
28°
Sunny
💧 45% 💨 27 km/h
1 PM
Sunny
29°
Sunny
💧 43% 💨 28.8 km/h
2 PM
Sunny
29°
Sunny
💧 40% 💨 29.5 km/h
3 PM
Sunny
29°
Sunny
💧 35% 💨 28.1 km/h
4 PM
Sunny
28°
Sunny
💧 36% 💨 20.5 km/h
5 PM
Overcast
27°
Overcast
💧 41% 💨 24.5 km/h
6 PM
Overcast
25°
Overcast
💧 42% 💨 24.8 km/h
7 PM
Overcast
25°
Overcast
💧 49% 💨 27.4 km/h
8 PM
Overcast
24°
Overcast
💧 48% 💨 28.1 km/h
9 PM
Cloudy
23°
Cloudy
💧 49% 💨 27.7 km/h
10 PM
Overcast
23°
Overcast
💧 60% 💨 27.7 km/h
11 PM
Overcast
20°
Overcast
💧 51% 💨 27.7 km/h

3-Day Forecast

Daily overview for Florissant, Missouri

Today
Sunny
Sunny
30° / 15°
🌧️ 0% chance of rain
💧 Avg. humidity: 60%
💨 Max wind: 29.5 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.6
🌅 Sunrise: 06:29 AM
🌇 Sunset: 07:36 PM
🌙 Waning Crescent
🌑 Moon: 33% lit
Mon, Apr 13
Overcast
Overcast
29° / 17°
🌧️ 0% chance of rain
💧 Avg. humidity: 71%
💨 Max wind: 27 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 2
🌅 Sunrise: 06:27 AM
🌇 Sunset: 07:37 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Overcast
Overcast
27° / 21°
🌧️ 0% chance of rain
💧 Avg. humidity: 73%
💨 Max wind: 29.5 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.9
🌅 Sunrise: 06:26 AM
🌇 Sunset: 07:38 PM
🌙 Waning Crescent
🌑 Moon: 15% lit

Best Time to Visit Florissant

Plan your trip to Florissant, United States around the most favorable weather conditions.

Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
← Back to Florissant 🗓 View Holidays 2026

Frequently Asked Questions

What is the current weather in Florissant?
Current conditions in Florissant: Partly cloudy, temperature 19°C, humidity 66%.
What is the best time to visit Florissant?
The best time to visit Florissant is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Florissant?
Florissant is located at approximately 38.8° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Florissant?
The wettest period in Florissant is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Florissant?
For visits to Florissant during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Florissant in?
Florissant is located in United States, in the state of Missouri.
What are the public holidays in Florissant in 2026?
View the 2026 public holidays for Florissant on our Holidays page.
What are the GPS coordinates used for the weather forecast in Florissant?
The weather forecast for Florissant uses coordinates 38.792, -90.3228.