Weather Forecast and Conditions for O'Fallon, Missouri 63366 - The Weather Channel | Weather.com
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83° Sunny
Sunny
Day 90° • Night 49°
Feels Like83°
Sunrise

7:06 am

Sunset

7:14 pm

Temperature
High / Low
90°/49°
Wind
9 mph
Humidity
Humidity
28%
Dew point
Dew Point
47°
Pressure
Pressure
29.90 in
UV index
UV Index
5 of 11
Visibility
Visibility
10 mi
Moon Phase - Day 2
Moon Phase
Waxing Crescent

Hourly Weather-

Now

Sunny Sunny
83°
Rain drop 0%
WSW 9 mph
Subtract

Sunny

  • Temperature feels like
    Feels Like83°
  • WindWSW 9 mph
  • Humidity
    Humidity28%
  • UV index
    UV Index5 of 11
  • Cloud
    Cloud Cover8%
  • Rain drop
    Rain Amount0 in

1 pm

Sunny Sunny
87°
Rain drop 0%
WSW 11 mph
Add

Sunny

  • Temperature feels like
    Feels Like87°
  • WindWSW 11 mph
  • Humidity
    Humidity24%
  • UV index
    UV Index5 of 11
  • Cloud
    Cloud Cover0%
  • Rain drop
    Rain Amount0 in

2 pm

Sunny Sunny
89°
Rain drop 0%
WSW 11 mph
Add

Sunny

  • Temperature feels like
    Feels Like89°
  • WindWSW 11 mph
  • Humidity
    Humidity23%
  • UV index
    UV Index5 of 11
  • Cloud
    Cloud Cover11%
  • Rain drop
    Rain Amount0 in

3 pm

Mostly Clear Day Mostly Sunny
86°
Rain drop 0%
W 12 mph
Add

Mostly Sunny

  • Temperature feels like
    Feels Like86°
  • WindW 12 mph
  • Humidity
    Humidity25%
  • UV index
    UV Index4 of 11
  • Cloud
    Cloud Cover20%
  • Rain drop
    Rain Amount0 in
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10 Day Weather-

Today

Mostly Clear Day Mostly Sunny
90°/49°
Rain drop 0%
Subtract

Day

90°
Mostly Clear Day
W 12 mph

Sunshine to start, then a few afternoon clouds. Very warm. High near 90F. Winds W at 10 to 15 mph.

  • Humidity
    Humidity26%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:06 am
  • Sunset
    Sunset7:14 pm

Night

49°
Partly Cloudy Night
Rain drop
7%
NNE 6 mph

Clear to partly cloudy. Low 49F. Winds NNE at 5 to 10 mph.

  • Humidity
    Humidity63%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise7:42 am
  • Moonset
    Moonset9:31 pm
  • Moon Phase - Day 2 Waxing Crescent

Sat 21

Sunny Sunny
87°/62°
Rain drop 8%
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Day

87°
Sunny
Rain drop
8%
SSE 7 mph

Mainly sunny. Near record high temperatures. High 87F. Winds SSE at 5 to 10 mph.

  • Humidity
    Humidity49%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise7:04 am
  • Sunset
    Sunset7:15 pm

Night

62°
Clear Night
Rain drop
4%
SSW 8 mph

A mostly clear sky. Low 62F. Winds SSW at 5 to 10 mph.

  • Humidity
    Humidity54%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise8:12 am
  • Moonset
    Moonset10:48 pm
  • Moon Phase - Day 3 Waxing Crescent

Sun 22

Partly Cloudy Day Partly Cloudy
87°/37°
Rain drop 4%
Add

Day

87°
Partly Cloudy Day
Rain drop
4%
WSW 19 mph

Mostly sunny skies during the morning hours will become overcast in the afternoon. High 87F. WSW winds at 5 to 10 mph, increasing to 15 to 25 mph. Higher wind gusts possible.

  • Humidity
    Humidity48%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise7:02 am
  • Sunset
    Sunset7:16 pm

Night

37°
Partly Cloudy Night
Mixed precipitation
3%
N 19 mph

A few clouds. Low 37F. Winds N at 15 to 25 mph.

  • Humidity
    Humidity59%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise8:47 am
  • Moonset
    Moonset--
  • Moon Phase - Day 4 Waxing Crescent

Mon 23

Partly Cloudy Day Partly Cloudy
58°/39°
Rain drop 3%
Add

Day

58°
Partly Cloudy Day
Rain drop
3%
NNE 9 mph

Partly cloudy skies. High 58F. Winds NNE at 5 to 10 mph.

  • Humidity
    Humidity47%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:01 am
  • Sunset
    Sunset7:17 pm

Night

39°
Mostly Cloudy Night
Mixed precipitation
1%
ESE 6 mph

Partly cloudy during the evening followed by cloudy skies overnight. Low 39F. Winds light and variable.

  • Humidity
    Humidity55%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise9:29 am
  • Moonset
    Moonset12:04 am
  • Moon Phase - Day 5 Waxing Crescent
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