Current Weather
4:31 PM
64°F
Rain
RealFeel® 66°
Pleasant
RealFeel Shade™ 64°
Pleasant
RealFeel®
66°
RealFeel Shade™
64°
Max UV Index
0.8 (Low)
Wind
E 2 mph
Wind Gusts
3 mph
Humidity
95%
Indoor Humidity
84% (Humid)
Dew Point
63° F
Pressure
↑ 29.99 in
Cloud Cover
100%
Visibility
9 mi
Cloud Ceiling
12900 ft
Day
5/18
72°Hi
RealFeel®
72°
Pleasant
RealFeel Shade™
71°
Pleasant
Mostly cloudy with showers and gusty t-storms; breezy in the a.m., then turning humid; thunderstorms can bring flash flooding and localized damaging wind gusts
Max UV Index2.0 (Low)
AccuLumen Brightness Index™1 (Dark)
WindSSW 10 mph
Wind Gusts23 mph
Probability of Precipitation100%
Probability of Thunderstorms60%
Precipitation0.79 in
Rain0.79 in
Hours of Precipitation6
Hours of Rain6
Cloud Cover95%
Night
5/18
68°Lo
RealFeel®
64°
Pleasant
Cloudy, warm and humid; a strong late-night thunderstorm; thunderstorms can bring hail and damaging winds
WindS 9 mph
Wind Gusts18 mph
Probability of Precipitation55%
Probability of Thunderstorms50%
Precipitation0.15 in
Rain0.15 in
Hours of Precipitation1
Hours of Rain1
Cloud Cover95%
Sun & Moon
14 hrs 23 mins
Rise
5:48 AM
Set
8:11 PM
Waxing Crescent
Rise
6:58 AM
Set
11:01 PM
Temperature History
5/18High
Low
Forecast
72°
68°
Average
77°
55°
Last Year
78°
56°
Current Weather Conditions in O'Fallon
O'Fallon, Missouri is currently Rain with a temperature of 64°. The current RealFeel® Temperature is 66° (Pleasant) based on observed conditions including 95% humidity, 100% cloud cover, a UV index of 1, and winds of 2 mph. In shade, the RealFeel Shade™ is 64°. AccuWeather's MinuteCast® provides minute-by-minute precipitation forecasts for O'Fallon, powered by forecasting systems and proprietary technology developed by AccuWeather meteorologists since 1962.
