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Hourly Weather Forecast for O'Fallon, Illinois - The Weather Channel | Weather.com
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Hourly Weather-

As of 4:34 am CDT

Rain

Thunderstorms likely around 4:45 AM.

Wednesday, March 11

5 am

Thunderstorms Heavy Thunderstorms
70°
Rain drop 97%
SSW 18 mph
Subtract

Heavy Thunderstorms

  • Temperature feels like
    Feels Like70°
  • WindSSW 18 mph
  • Humidity
    Humidity81%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover90%
  • Rain drop
    Rain Amount0.36 in

5:15 am

Thunderstorms Heavy Thunderstorms
69°
Rain drop 94%
SW 17 mph

6 am

Thunderstorms Thunderstorms
66°
Rain drop 89%
WSW 15 mph
Add

Thunderstorms

  • Temperature feels like
    Feels Like66°
  • WindWSW 15 mph
  • Humidity
    Humidity79%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover94%
  • Rain drop
    Rain Amount0.11 in

7 am

Cloudy Cloudy
65°
Rain drop 17%
SW 12 mph
Add

Cloudy

  • Temperature feels like
    Feels Like64°
  • WindSW 12 mph
  • Humidity
    Humidity82%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover94%
  • Rain drop
    Rain Amount0 in

8 am

Cloudy Cloudy
62°
Rain drop 17%
SW 9 mph
Add

Cloudy

  • Temperature feels like
    Feels Like62°
  • WindSW 9 mph
  • Humidity
    Humidity89%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover98%
  • Rain drop
    Rain Amount0 in

9 am

Cloudy Cloudy
62°
Rain drop 20%
WSW 10 mph
Add

Cloudy

  • Temperature feels like
    Feels Like61°
  • WindWSW 10 mph
  • Humidity
    Humidity88%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover94%
  • Rain drop
    Rain Amount0 in

10 am

Showers Showers
61°
Rain drop 36%
W 11 mph
Add

Showers

  • Temperature feels like
    Feels Like59°
  • WindW 11 mph
  • Humidity
    Humidity91%
  • UV index
    UV Index1 of 11
  • Cloud
    Cloud Cover93%
  • Rain drop
    Rain Amount0.01 in
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11 am

Rain Rain
58°
Rain drop 87%
WNW 13 mph
Add

Rain

  • Temperature feels like
    Feels Like55°
  • WindWNW 13 mph
  • Humidity
    Humidity96%
  • UV index
    UV Index1 of 11
  • Cloud
    Cloud Cover100%
  • Rain drop
    Rain Amount0.04 in

12 pm

Showers Showers/Wind
52°
Rain drop 39%
NW 20 mph
Add

Showers/Wind

  • Temperature feels like
    Feels Like47°
  • WindNW 20 mph
  • Humidity
    Humidity87%
  • UV index
    UV Index2 of 11
  • Cloud
    Cloud Cover90%
  • Rain drop
    Rain Amount0.01 in

1 pm

Showers Showers
50°
Rain drop 55%
NW 19 mph
Add

Showers

  • Temperature feels like
    Feels Like43°
  • WindNW 19 mph
  • Humidity
    Humidity84%
  • UV index
    UV Index2 of 11
  • Cloud
    Cloud Cover90%
  • Rain drop
    Rain Amount0.02 in

2 pm

Cloudy Cloudy
48°
Rain drop 13%
NW 19 mph
Add

Cloudy

  • Temperature feels like
    Feels Like41°
  • WindNW 19 mph
  • Humidity
    Humidity81%
  • UV index
    UV Index2 of 11
  • Cloud
    Cloud Cover99%
  • Rain drop
    Rain Amount0 in

3 pm

Windy Cloudy/Wind
47°
Rain drop 19%
NW 20 mph
Add

Cloudy/Wind

  • Temperature feels like
    Feels Like39°
  • WindNW 20 mph
  • Humidity
    Humidity79%
  • UV index
    UV Index2 of 11
  • Cloud
    Cloud Cover98%
  • Rain drop
    Rain Amount0 in

4 pm

Windy Cloudy/Wind
45°
Rain drop 11%
NW 21 mph
Add

Cloudy/Wind

  • Temperature feels like
    Feels Like37°
  • WindNW 21 mph
  • Humidity
    Humidity76%
  • UV index
    UV Index1 of 11
  • Cloud
    Cloud Cover92%
  • Rain drop
    Rain Amount0 in

5 pm

Cloudy Cloudy
45°
Rain drop 4%
NW 19 mph
Add

Cloudy

  • Temperature feels like
    Feels Like37°
  • WindNW 19 mph
  • Humidity
    Humidity72%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover94%
  • Rain drop
    Rain Amount0 in

6 pm

Cloudy Cloudy
45°
Rain drop 4%
NW 19 mph
Add

Cloudy

  • Temperature feels like
    Feels Like37°
  • WindNW 19 mph
  • Humidity
    Humidity68%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover85%
  • Rain drop
    Rain Amount0 in

7 pm

Mostly Cloudy Day Mostly Cloudy
43°
Rain drop 3%
NW 17 mph
Add

Mostly Cloudy

  • Temperature feels like
    Feels Like36°
  • WindNW 17 mph
  • Humidity
    Humidity70%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover64%
  • Rain drop
    Rain Amount0 in

8 pm

Partly Cloudy Night Partly Cloudy
42°
Rain drop 2%
NNW 16 mph
Add

Partly Cloudy

  • Temperature feels like
    Feels Like34°
  • WindNNW 16 mph
  • Humidity
    Humidity70%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover51%
  • Rain drop
    Rain Amount0 in

9 pm

Partly Cloudy Night Partly Cloudy
41°
Rain drop 3%
NNW 15 mph
Add

Partly Cloudy

  • Temperature feels like
    Feels Like34°
  • WindNNW 15 mph
  • Humidity
    Humidity68%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover45%
  • Rain drop
    Rain Amount0 in

10 pm

Partly Cloudy Night Partly Cloudy
41°
Rain drop 3%
NNW 14 mph
Add

Partly Cloudy

  • Temperature feels like
    Feels Like33°
  • WindNNW 14 mph
  • Humidity
    Humidity67%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover42%
  • Rain drop
    Rain Amount0 in
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11 pm

Partly Cloudy Night Partly Cloudy
40°
Rain drop 3%
NNW 14 mph
Add

Partly Cloudy

  • Temperature feels like
    Feels Like32°
  • WindNNW 14 mph
  • Humidity
    Humidity67%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover31%
  • Mixed precipitation
    Precip Amount0 in

Thursday, March 12

12 am

Mostly Clear Night Mostly Clear
39°
Rain drop 2%
NNW 13 mph
Add

Mostly Clear

  • Temperature feels like
    Feels Like31°
  • WindNNW 13 mph
  • Humidity
    Humidity68%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover21%
  • Mixed precipitation
    Precip Amount0 in

1 am

Clear Night Clear
37°
Rain drop 3%
NNW 10 mph
Add

Clear

  • Temperature feels like
    Feels Like30°
  • WindNNW 10 mph
  • Humidity
    Humidity69%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover13%
  • Mixed precipitation
    Precip Amount0 in

2 am

Clear Night Clear
36°
Rain drop 3%
NW 9 mph
Add

Clear

  • Temperature feels like
    Feels Like29°
  • WindNW 9 mph
  • Humidity
    Humidity70%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover14%
  • Mixed precipitation
    Precip Amount0 in

3 am

Clear Night Clear
35°
Rain drop 3%
NNW 7 mph
Add

Clear

  • Temperature feels like
    Feels Like29°
  • WindNNW 7 mph
  • Humidity
    Humidity72%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover6%
  • Mixed precipitation
    Precip Amount0 in

4 am

Clear Night Clear
33°
Rain drop 4%
NW 5 mph
Add

Clear

  • Temperature feels like
    Feels Like28°
  • WindNW 5 mph
  • Humidity
    Humidity76%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover4%
  • Mixed precipitation
    Precip Amount0 in

5 am

Clear Night Clear
32°
Rain drop 5%
NW 4 mph
Add

Clear

  • Temperature feels like
    Feels Like28°
  • WindNW 4 mph
  • Humidity
    Humidity79%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover0%
  • Mixed precipitation
    Precip Amount0 in

6 am

Clear Night Clear
31°
Rain drop 5%
WNW 3 mph
Add

Clear

  • Temperature feels like
    Feels Like28°
  • WindWNW 3 mph
  • Humidity
    Humidity84%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover0%
  • Mixed precipitation
    Precip Amount0 in

7 am

Clear Night Clear
31°
Rain drop 6%
WNW 3 mph
Add

Clear

  • Temperature feels like
    Feels Like31°
  • WindWNW 3 mph
  • Humidity
    Humidity85%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover1%
  • Mixed precipitation
    Precip Amount0 in

8 am

Sunny Sunny
32°
Rain drop 5%
W 3 mph
Add

Sunny

  • Temperature feels like
    Feels Like32°
  • WindW 3 mph
  • Humidity
    Humidity81%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover2%
  • Mixed precipitation
    Precip Amount0 in

9 am

Sunny Sunny
36°
Rain drop 2%
W 4 mph
Add

Sunny

  • Temperature feels like
    Feels Like33°
  • WindW 4 mph
  • Humidity
    Humidity74%
  • UV index
    UV Index1 of 11
  • Cloud
    Cloud Cover1%
  • Mixed precipitation
    Precip Amount0 in

10 am

Sunny Sunny
40°
Rain drop 1%
W 5 mph
Add

Sunny

  • Temperature feels like
    Feels Like36°
  • WindW 5 mph
  • Humidity
    Humidity63%
  • UV index
    UV Index2 of 11
  • Cloud
    Cloud Cover1%
  • Rain drop
    Rain Amount0 in
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11 am

Sunny Sunny
44°
Rain drop 0%
W 6 mph
Add

Sunny

  • Temperature feels like
    Feels Like40°
  • WindW 6 mph
  • Humidity
    Humidity54%
  • UV index
    UV Index3 of 11
  • Cloud
    Cloud Cover2%
  • Rain drop
    Rain Amount0 in

12 pm

Sunny Sunny
47°
Rain drop 0%
WSW 8 mph
Add

Sunny

  • Temperature feels like
    Feels Like43°
  • WindWSW 8 mph
  • Humidity
    Humidity47%
  • UV index
    UV Index4 of 11
  • Cloud
    Cloud Cover3%
  • Rain drop
    Rain Amount0 in

1 pm

Partly Cloudy Day Partly Cloudy
50°
Rain drop 0%
W 8 mph
Add

Partly Cloudy

  • Temperature feels like
    Feels Like47°
  • WindW 8 mph
  • Humidity
    Humidity39%
  • UV index
    UV Index5 of 11
  • Cloud
    Cloud Cover35%
  • Rain drop
    Rain Amount0 in

2 pm

Mostly Clear Day Mostly Sunny
52°
Rain drop 0%
WSW 9 mph
Add

Mostly Sunny

  • Temperature feels like
    Feels Like49°
  • WindWSW 9 mph
  • Humidity
    Humidity36%
  • UV index
    UV Index5 of 11
  • Cloud
    Cloud Cover22%
  • Rain drop
    Rain Amount0 in

3 pm

Sunny Sunny
53°
Rain drop 0%
WSW 9 mph
Add

Sunny

  • Temperature feels like
    Feels Like50°
  • WindWSW 9 mph
  • Humidity
    Humidity34%
  • UV index
    UV Index4 of 11
  • Cloud
    Cloud Cover19%
  • Rain drop
    Rain Amount0 in

4 pm

Sunny Sunny
53°
Rain drop 0%
SW 10 mph
Add

Sunny

  • Temperature feels like
    Feels Like50°
  • WindSW 10 mph
  • Humidity
    Humidity32%
  • UV index
    UV Index2 of 11
  • Cloud
    Cloud Cover14%
  • Rain drop
    Rain Amount0 in

5 pm

Mostly Clear Day Mostly Sunny
53°
Rain drop 0%
SSW 11 mph
Add

Mostly Sunny

  • Temperature feels like
    Feels Like50°
  • WindSSW 11 mph
  • Humidity
    Humidity32%
  • UV index
    UV Index1 of 11
  • Cloud
    Cloud Cover21%
  • Rain drop
    Rain Amount0 in

6 pm

Mostly Clear Day Mostly Sunny
53°
Rain drop 0%
S 12 mph
Add

Mostly Sunny

  • Temperature feels like
    Feels Like49°
  • WindS 12 mph
  • Humidity
    Humidity32%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover23%
  • Rain drop
    Rain Amount0 in

7 pm

Mostly Clear Day Mostly Sunny
50°
Rain drop 0%
S 10 mph
Add

Mostly Sunny

  • Temperature feels like
    Feels Like46°
  • WindS 10 mph
  • Humidity
    Humidity38%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover22%
  • Rain drop
    Rain Amount0 in

8 pm

Partly Cloudy Night Partly Cloudy
48°
Rain drop 0%
S 12 mph
Add

Partly Cloudy

  • Temperature feels like
    Feels Like43°
  • WindS 12 mph
  • Humidity
    Humidity43%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover47%
  • Rain drop
    Rain Amount0 in

9 pm

Partly Cloudy Night Partly Cloudy
47°
Rain drop 0%
S 14 mph
Add

Partly Cloudy

  • Temperature feels like
    Feels Like41°
  • WindS 14 mph
  • Humidity
    Humidity46%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover50%
  • Rain drop
    Rain Amount0 in

10 pm

Mostly Clear Night Mostly Clear
46°
Rain drop 0%
S 14 mph
Add

Mostly Clear

  • Temperature feels like
    Feels Like40°
  • WindS 14 mph
  • Humidity
    Humidity47%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover28%
  • Rain drop
    Rain Amount0 in
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11 pm

Clear Night Clear
46°
Rain drop 0%
SSW 16 mph
Add

Clear

  • Temperature feels like
    Feels Like39°
  • WindSSW 16 mph
  • Humidity
    Humidity47%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover9%
  • Rain drop
    Rain Amount0 in

Friday, March 13

12 am

Clear Night Clear
46°
Rain drop 0%
SSW 18 mph
Add

Clear

  • Temperature feels like
    Feels Like39°
  • WindSSW 18 mph
  • Humidity
    Humidity47%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover14%
  • Rain drop
    Rain Amount0 in

1 am

Partly Cloudy Night Partly Cloudy
45°
Rain drop 0%
SSW 17 mph
Add

Partly Cloudy

  • Temperature feels like
    Feels Like38°
  • WindSSW 17 mph
  • Humidity
    Humidity48%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover39%
  • Rain drop
    Rain Amount0 in

2 am

Clear Night Clear
46°
Rain drop 0%
SSW 17 mph
Add

Clear

  • Temperature feels like
    Feels Like38°
  • WindSSW 17 mph
  • Humidity
    Humidity48%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover10%
  • Rain drop
    Rain Amount0 in

3 am

Clear Night Clear
46°
Rain drop 0%
SSW 17 mph
Add

Clear

  • Temperature feels like
    Feels Like39°
  • WindSSW 17 mph
  • Humidity
    Humidity48%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover16%
  • Rain drop
    Rain Amount0 in

4 am

Mostly Clear Night Mostly Clear
46°
Rain drop 0%
SW 15 mph
Add

Mostly Clear

  • Temperature feels like
    Feels Like39°
  • WindSW 15 mph
  • Humidity
    Humidity49%
  • UV index
    UV Index0 of 11
  • Cloud
    Cloud Cover20%
  • Rain drop
    Rain Amount0 in
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