10-Day Weather Forecast for O'Fallon, Missouri - The Weather Channel | weather.com
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10 Day Weather-

As of 9:04 pm CDT

Tonight

Mostly Cloudy Night Mostly Cloudy
--/36°
Rain drop 17%
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Night

36°
Mostly Cloudy Night
Mixed precipitation
17%
E 7 mph

Partly cloudy skies early will give way to cloudy skies late. Low 36F. Winds E at 5 to 10 mph.

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  • Humidity
    Humidity53%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise9:29 am
  • Moonset
    Moonset12:04 am
  • Moon Phase - Day 5 Waxing Crescent

Tue 24

Partly Cloudy Day Partly Cloudy
64°/42°
Rain drop 1%
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Day

64°
Partly Cloudy Day
Rain drop
1%
SE 9 mph

Intervals of clouds and sunshine. High 64F. Winds SE at 5 to 10 mph.

  • Humidity
    Humidity40%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise6:59 am
  • Sunset
    Sunset7:18 pm

Night

42°
Partly Cloudy Night
Rain drop
2%
SE 7 mph

Cloudy early with partial clearing expected late. Low 42F. Winds SE at 5 to 10 mph.

  • Humidity
    Humidity48%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise10:22 am
  • Moonset
    Moonset1:18 am
  • Moon Phase - Day 6 Waxing Crescent

Wed 25

Partly Cloudy Day Partly Cloudy
81°/63°
Rain drop 2%
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Day

81°
Partly Cloudy Day
Rain drop
2%
S 11 mph

Intervals of clouds and sunshine. High 81F. Winds S at 10 to 15 mph.

  • Humidity
    Humidity45%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise6:58 am
  • Sunset
    Sunset7:19 pm

Night

63°
Mostly Clear Night
Rain drop
6%
SSW 9 mph

Mostly clear skies. Low 63F. Winds SSW at 5 to 10 mph.

  • Humidity
    Humidity58%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise11:24 am
  • Moonset
    Moonset2:25 am
  • Moon Phase - Day 7 First Quarter

Thu 26

Mostly Clear Day Mostly Sunny
91°/39°
Rain drop 6%
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Day

91°
Mostly Clear Day
Rain drop
6%
SW 14 mph

Generally sunny despite a few afternoon clouds. Near record high temperatures. High 91F. Winds SW at 10 to 20 mph.

  • Humidity
    Humidity50%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise6:56 am
  • Sunset
    Sunset7:20 pm

Night

39°
Thunderstorms
Rain drop
71%
N 13 mph

Showers and scattered thunderstorms. A few storms may be severe. Low 39F. Winds N at 10 to 20 mph. Chance of rain 70%.

  • Humidity
    Humidity75%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise12:35 pm
  • Moonset
    Moonset3:21 am
  • Moon Phase - Day 8 Waxing Gibbous

Fri 27

Scattered Showers Day AM Showers
52°/28°
Rain drop 53%
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Day

52°
Scattered Showers Day
Rain drop
53%
NNE 13 mph

Rain showers early with overcast skies later in the day. Much colder. High 52F. Winds NNE at 10 to 20 mph. Chance of rain 50%.

  • Humidity
    Humidity60%
  • UV index
    UV Index4 of 11
  • Sunrise
    Sunrise6:55 am
  • Sunset
    Sunset7:21 pm

Night

28°
Partly Cloudy Night
Mixed precipitation
3%
NNE 9 mph

Partly cloudy skies. Low 28F. Winds NNE at 5 to 10 mph.

  • Humidity
    Humidity63%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise1:47 pm
  • Moonset
    Moonset4:07 am
  • Moon Phase - Day 9 Waxing Gibbous

Sat 28

Sunny Sunny
57°/38°
Rain drop 3%
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Day

57°
Sunny
Rain drop
3%
ESE 7 mph

Mainly sunny. High 57F. Winds ESE at 5 to 10 mph.

  • Humidity
    Humidity46%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise6:53 am
  • Sunset
    Sunset7:22 pm

Night

38°
Partly Cloudy Night
Mixed precipitation
1%
SSE 5 mph

Partly cloudy skies. Low 38F. Winds light and variable.

  • Humidity
    Humidity52%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise2:59 pm
  • Moonset
    Moonset4:43 am
  • Moon Phase - Day 10 Waxing Gibbous

Sun 29

Partly Cloudy Day Partly Cloudy
69°/50°
Rain drop 1%
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Day

69°
Partly Cloudy Day
Rain drop
1%
S 9 mph

Partly cloudy skies in the morning will give way to cloudy skies during the afternoon. High 69F. Winds S at 5 to 10 mph.

  • Humidity
    Humidity40%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise6:52 am
  • Sunset
    Sunset7:23 pm

Night

50°
Partly Cloudy Night
Rain drop
8%
S 7 mph

Partly cloudy. Low around 50F. Winds S at 5 to 10 mph.

  • Humidity
    Humidity52%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise4:08 pm
  • Moonset
    Moonset5:12 am
  • Moon Phase - Day 11 Waxing Gibbous

Mon 30

Partly Cloudy Day Partly Cloudy
81°/59°
Rain drop 11%
Add

Day

81°
Partly Cloudy Day
Rain drop
11%
SSW 11 mph

Partly cloudy skies. High 81F. Winds SSW at 10 to 15 mph.

  • Humidity
    Humidity50%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise6:50 am
  • Sunset
    Sunset7:24 pm

Night

59°
Scattered Showers Night
Rain drop
31%
SSW 10 mph

Partly cloudy skies early followed by mostly cloudy skies and a few showers later at night. Low 59F. Winds SSW at 5 to 10 mph. Chance of rain 30%.

  • Humidity
    Humidity65%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise5:14 pm
  • Moonset
    Moonset5:38 am
  • Moon Phase - Day 12 Waxing Gibbous

Tue 31

Isolated Thunderstorms Isolated Thunderstorms
83°/61°
Rain drop 34%
Add

Day

83°
Isolated Thunderstorms
Rain drop
34%
SSW 14 mph

Scattered clouds with the possibility of an isolated thunderstorm developing during the afternoon. High 83F. Winds SSW at 10 to 20 mph. Chance of rain 30%.

  • Humidity
    Humidity56%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise6:49 am
  • Sunset
    Sunset7:25 pm

Night

61°
Showers
Rain drop
52%
SSW 12 mph

Overcast with showers at times. Low 61F. Winds SSW at 10 to 15 mph. Chance of rain 50%.

  • Humidity
    Humidity66%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise6:19 pm
  • Moonset
    Moonset6:01 am
  • Moon Phase - Day 13 Waxing Gibbous

Wed 01

Scattered Thunderstorms Scattered Thunderstorms
79°/57°
Rain drop 52%
Add

Day

79°
Scattered Thunderstorms
Rain drop
52%
SSW 14 mph

Scattered showers and thunderstorms. High 79F. Winds SSW at 10 to 20 mph. Chance of rain 50%.

  • Humidity
    Humidity60%
  • UV index
    UV Index4 of 11
  • Sunrise
    Sunrise6:47 am
  • Sunset
    Sunset7:26 pm

Night

57°
Scattered Thunderstorms Night
Rain drop
40%
SSW 12 mph

Mostly cloudy with showers and a few thunderstorms. Low 57F. Winds SSW at 10 to 15 mph. Chance of rain 40%.

  • Humidity
    Humidity66%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise7:22 pm
  • Moonset
    Moonset6:23 am
  • Moon Phase - Day 14 Full Moon

Thu 02

Scattered Thunderstorms Scattered Thunderstorms
75°/51°
Rain drop 49%
Add

Day

75°
Scattered Thunderstorms
Rain drop
49%
SW 12 mph

Showers early then scattered thunderstorms developing later in the day. High around 75F. Winds SW at 10 to 15 mph. Chance of rain 50%.

  • Humidity
    Humidity61%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise6:46 am
  • Sunset
    Sunset7:27 pm

Night

51°
Scattered Thunderstorms Night
Rain drop
46%
SW 10 mph

Scattered thunderstorms in the evening, then variable clouds overnight with more showers at times. Low 51F. Winds SW at 5 to 10 mph. Chance of rain 50%.

  • Humidity
    Humidity74%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise8:26 pm
  • Moonset
    Moonset6:46 am
  • Moon Phase - Day 15 Full Moon

Fri 03

Mostly Cloudy Day Mostly Cloudy
68°/54°
Rain drop 24%
Add

Day

68°
Mostly Cloudy Day
Rain drop
24%
S 12 mph

Mostly cloudy skies. High 68F. Winds S at 10 to 15 mph.

  • Humidity
    Humidity67%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise6:44 am
  • Sunset
    Sunset7:28 pm

Night

54°
Scattered Showers Night
Rain drop
38%
SSE 10 mph

Mostly cloudy in the evening then periods of showers after midnight. Low 54F. Winds SSE at 10 to 15 mph. Chance of rain 40%.

  • Humidity
    Humidity74%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise9:28 pm
  • Moonset
    Moonset7:10 am
  • Moon Phase - Day 16 Waning Gibbous

Sat 04

Scattered Thunderstorms Scattered Thunderstorms
74°/52°
Rain drop 59%
Add

Day

74°
Scattered Thunderstorms
Rain drop
59%
S 11 mph

Scattered showers and thunderstorms. High 74F. Winds S at 10 to 15 mph. Chance of rain 60%.

  • Humidity
    Humidity65%
  • UV index
    UV Index4 of 11
  • Sunrise
    Sunrise6:42 am
  • Sunset
    Sunset7:29 pm

Night

52°
Showers
Rain drop
53%
SSW 9 mph

Cloudy with showers. Low 52F. Winds SSW at 5 to 10 mph. Chance of rain 50%.

  • Humidity
    Humidity72%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise10:32 pm
  • Moonset
    Moonset7:36 am
  • Moon Phase - Day 17 Waning Gibbous

Sun 05

Showers Showers
71°/46°
Rain drop 52%
Add

Day

71°
Showers
Rain drop
52%
WSW 11 mph

Cloudy with showers. High 71F. Winds WSW at 10 to 15 mph. Chance of rain 50%.

  • Humidity
    Humidity61%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise6:41 am
  • Sunset
    Sunset7:30 pm

Night

46°
Showers
Rain drop
47%
NW 8 mph

Overcast with rain showers at times. Low 46F. Winds NW at 5 to 10 mph. Chance of rain 50%.

  • Humidity
    Humidity75%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise11:34 pm
  • Moonset
    Moonset8:08 am
  • Moon Phase - Day 18 Waning Gibbous

Mon 06

Scattered Showers Day AM Showers
68°/46°
Rain drop 34%
Add

Day

68°
Scattered Showers Day
Rain drop
34%
NW 9 mph

A few showers in the morning, then clouds lingering in the afternoon. High 68F. Winds NW at 5 to 10 mph. Chance of rain 30%.

  • Humidity
    Humidity61%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise6:39 am
  • Sunset
    Sunset7:31 pm

Night

46°
Showers
Rain drop
51%
NNE 7 mph

Overcast with rain showers at times. Low 46F. Winds NNE at 5 to 10 mph. Chance of rain 50%.

  • Humidity
    Humidity75%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise--
  • Moonset
    Moonset8:45 am
  • Moon Phase - Day 19 Waning Gibbous
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