Live Weather & Forecast

Weather in Affton

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

Flag of United States
Partly cloudy
25°C
Feels like 25°C
78°F / Feels 78°F
Partly cloudy
Affton, Missouri
🌞 Daytime
Updated: 2026-04-12 15:30
💧
Humidity
42%
💨
Wind
22.3 km/h SSW
🌬️
Wind Gust
32 km/h
🌡️
Pressure
1015 mb
👁️
Visibility
16 km
☀️
UV Index
4.4 (Moderate)
🌧️
Precipitation
0 mm
☁️
Cloud Cover
75%
💦
Dew Point
11.8°C
🌐
Wind Degree
199°

Air Quality Index

US EPA: Good UK DEFRA: Low (1)
CO
164.9 μg/m³
NO₂
6.2 μg/m³
O₃
109 μg/m³
SO₂
2.3 μg/m³
PM 2.5
6.6 μg/m³
PM 10
7 μg/m³

Weather Alerts 2

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
Met · Severe · Immediate
Flood Warning issued April 12 at 11:41AM CDT until April 20 at 7:00AM CDT by NWS St Louis MO

...The Flood Warning continues for the following river in Missouri and Illinois... Mississippi River at Hannibal Clarksville 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 Monday, April 20. * ADDITI...

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: 2026-04-12T11:41:00-05:00  ·  Expires: 2026-04-13T23:45:00-05:00

Today's Hourly Forecast

24-hour breakdown for Affton, Missouri

12 AM
Clear
17°
Clear
💧 82% 💨 16.2 km/h
1 AM
Clear
16°
Clear
💧 84% 💨 14.8 km/h
2 AM
Clear
16°
Clear
💧 83% 💨 16.6 km/h
3 AM
Clear
16°
Clear
💧 83% 💨 13.3 km/h
4 AM
Clear
15°
Clear
💧 83% 💨 12.6 km/h
5 AM
Clear
15°
Clear
💧 83% 💨 13 km/h
6 AM
Clear
15°
Clear
💧 83% 💨 13 km/h
7 AM
Sunny
16°
Sunny
💧 82% 💨 13.3 km/h
8 AM
Sunny
18°
Sunny
💧 80% 💨 17.3 km/h
9 AM
Sunny
20°
Sunny
💧 73% 💨 21.6 km/h
10 AM
Sunny
23°
Sunny
💧 65% 💨 24.5 km/h
11 AM
Sunny
26°
Sunny
💧 56% 💨 26.6 km/h
12 PM
Sunny
27°
Sunny
💧 49% 💨 29.2 km/h
1 PM
Sunny
29°
Sunny
💧 43% 💨 30.2 km/h
2 PM
Sunny
29°
Sunny
💧 38% 💨 27.4 km/h
3 PM
Partly cloudy
25°
Partly cloudy
💧 42% 💨 22.3 km/h
4 PM
Sunny
28°
Sunny
💧 38% 💨 24.1 km/h
5 PM
Overcast
27°
Overcast
💧 44% 💨 24.1 km/h
6 PM
Cloudy
25°
Cloudy
💧 47% 💨 25.6 km/h
7 PM
Overcast
24°
Overcast
💧 53% 💨 27.4 km/h
8 PM
Overcast
23°
Overcast
💧 51% 💨 28.8 km/h
9 PM
Cloudy
23°
Cloudy
💧 50% 💨 29.9 km/h
10 PM
Overcast
22°
Overcast
💧 60% 💨 29.2 km/h
11 PM
Overcast
20°
Overcast
💧 53% 💨 29.9 km/h

3-Day Forecast

Daily overview for Affton, Missouri

Today
Sunny
Sunny
30° / 15°
🌧️ 0% chance of rain
💧 Avg. humidity: 62%
💨 Max wind: 30.2 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.6
🌅 Sunrise: 06:29 AM
🌇 Sunset: 07:35 PM
🌙 Waning Crescent
🌑 Moon: 33% lit
Mon, Apr 13
Thundery outbreaks in nearby
Thundery outbreaks in nearby
30° / 18°
🌧️ 0% chance of rain
💧 Avg. humidity: 73%
💨 Max wind: 29.5 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 2
🌅 Sunrise: 06:28 AM
🌇 Sunset: 07:36 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Thundery outbreaks in nearby
Thundery outbreaks in nearby
27° / 20°
🌧️ 0% chance of rain
💧 Avg. humidity: 75%
💨 Max wind: 29.9 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 2
🌅 Sunrise: 06:26 AM
🌇 Sunset: 07:37 PM
🌙 Waning Crescent
🌑 Moon: 15% lit

Best Time to Visit Affton

Plan your trip to Affton, 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 Affton 🗓 View Holidays 2026

Frequently Asked Questions

What is the current weather in Affton?
Current conditions in Affton: Partly cloudy, temperature 25°C, humidity 42%.
What is the best time to visit Affton?
The best time to visit Affton is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Affton?
Affton is located at approximately 38.6° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Affton?
The wettest period in Affton is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Affton?
For visits to Affton during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Affton in?
Affton is located in United States, in the state of Missouri.
What are the public holidays in Affton in 2026?
View the 2026 public holidays for Affton on our Holidays page.
What are the GPS coordinates used for the weather forecast in Affton?
The weather forecast for Affton uses coordinates 38.5522, -90.3264.