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  • Tonight

    Aug 25

    Mostly cloudy with a t-storm Lo 72°
  • Fri

    Aug 26

    A heavy thunderstorm 87°Lo 71°
    more
  • Sat

    Aug 27

    Variable clouds, a t-storm 85°Lo 71°
    more
  • Sun

    Aug 28

    Partly sunny with a t-storm 90°Lo 72°
    more
  • Mon

    Aug 29

    Couple of thunderstorms 90°Lo 70°
    more
Hi 90° RealFeel® 105° Precipitation 50%

Day

N

E

S

W

  • SW 6 mph
  • Gusts: 13 mph

Humid with intervals of clouds and sunshine; a shower or thunderstorm in spots late this afternoon

  • Max UV Index: 6 (High)
  • Thunderstorms: 60%
  • Precipitation: 0.25 in
  • Rain: 0.25 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1 hrs
  • Hours of Rain: 1 hrs
Lo 72° RealFeel® 72° Precipitation 59%

Night

N

E

S

W

  • SE 4 mph
  • Gusts: 6 mph

Mostly cloudy with a shower or thunderstorm

  • Max UV Index: N/A
  • Thunderstorms: 60%
  • Precipitation: 0.28 in
  • Rain: 0.28 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1.5 hrs
  • Hours of Rain: 1.5 hrs

Temperature History - Aug 25

more Historical Weather Data >
  Today Normal Record 8/25/2015
High 90° 89° N/A 78°
Low 72° 64° N/A 52°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:23 AM with 13:16 of sunlight, then sets at 7:39 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 12:02 AM with 14:18 of moolight, then sets at 2:20 PM

O'Fallon Weather Report

Locally severe thunderstorms to target New York to Kansas into Thursday night

August 25, 2016; 4:50 PM ET

Thunderstorms with the risk of locally severe weather will extend from the central Plains to the eastern Great Lakes into Thursday night. more >