Current Weather
1:53 PM
83°F
Partly sunny
RealFeel® 96°
Hot
RealFeel Shade™ 86°
Very Warm
RealFeel®
96°
RealFeel Shade™
86°
Heat Index
87°
Max UV Index
8.7 (Very High)
Wind
S 6 mph
Wind Gusts
12 mph
Humidity
64%
Indoor Humidity
64% (Very Humid)
Dew Point
70° F
Pressure
↓ 29.83 in
Cloud Cover
47%
Visibility
15 mi
Cloud Ceiling
20000 ft
Day
5/17
88°Hi
RealFeel®
96°
Hot
RealFeel Shade™
86°
Very Warm
Breezy this morning; otherwise, partly sunny and very warm; possible danger of dehydration and heatstroke while doing strenuous activities
Max UV Index10.0 (Very High)
AccuLumen Brightness Index™8 (Bright)
WindS 13 mph
Wind Gusts35 mph
Probability of Precipitation2%
Probability of Thunderstorms0%
Precipitation0.00 in
Cloud Cover30%
Night
5/17
73°Lo
RealFeel®
72°
Pleasant
Partly cloudy, very warm and humid
WindS 10 mph
Wind Gusts25 mph
Probability of Precipitation13%
Probability of Thunderstorms3%
Precipitation0.00 in
Cloud Cover59%
Sun & Moon
14 hrs 21 mins
Rise
5:49 AM
Set
8:10 PM
Waxing Crescent
Rise
6:00 AM
Set
9:53 PM
Temperature History
5/17High
Low
Forecast
88°
73°
Average
77°
55°
Last Year
74°
56°
Current Weather Conditions in O'Fallon
O'Fallon, Missouri is currently Partly sunny with a temperature of 83°. The current RealFeel® Temperature is 96° (Hot) based on observed conditions including 64% humidity, 47% cloud cover, a UV index of 9, and winds of 6 mph. In shade, the RealFeel Shade™ is 86°. 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.
