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10-Day Weather Forecast for O'Fallon, Missouri 63366 - The Weather Channel | weather.com
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10 Day Weather-

As of 3:31 pm CDT

Tonight

Partly Cloudy Night Partly Cloudy
--/60°
Rain drop 3%
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Night

60°
Partly Cloudy Night
Rain drop
3%
S 14 mph

Partly cloudy. Low near 60F. Winds S at 10 to 20 mph.

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  • Humidity
    Humidity45%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise4:09 pm
  • Moonset
    Moonset5:13 am
  • Moon Phase - Day 11 Waxing Gibbous

Mon 30

Partly Cloudy Day Partly Cloudy
87°/65°
Rain drop 2%
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Day

87°
Partly Cloudy Day
Rain drop
2%
SSW 16 mph

Partly cloudy skies. High 87F. Winds SSW at 10 to 20 mph.

  • Humidity
    Humidity47%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise6:50 am
  • Sunset
    Sunset7:24 pm

Night

65°
Partly Cloudy Night
Rain drop
3%
SSW 13 mph

A few clouds. Low around 65F. Winds SSW at 10 to 15 mph.

  • Humidity
    Humidity52%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise5:15 pm
  • Moonset
    Moonset5:38 am
  • Moon Phase - Day 12 Waxing Gibbous

Tue 31

Mostly Cloudy Day Mostly Cloudy
85°/54°
Rain drop 20%
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Day

85°
Mostly Cloudy Day
Rain drop
20%
SSW 20 mph

Partly cloudy skies during the morning hours will become overcast in the afternoon. A stray afternoon thunderstorm is possible. High around 85F. Winds SSW at 15 to 25 mph.

  • Humidity
    Humidity49%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise6:49 am
  • Sunset
    Sunset7:25 pm

Night

54°
Thunderstorms
Rain drop
65%
NW 9 mph

Thunderstorms in the evening, overcast overnight with occasional rain. Low 54F. Winds NW at 5 to 10 mph. Chance of rain 70%.

  • Humidity
    Humidity68%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise6:20 pm
  • Moonset
    Moonset6:01 am
  • Moon Phase - Day 13 Waxing Gibbous

Wed 01

Showers Showers
65°/60°
Rain drop 87%
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Day

65°
Showers
Rain drop
87%
ENE 9 mph

Light rain early...then remaining cloudy with showers in the afternoon. Thunder possible. High near 65F. Winds ENE at 5 to 10 mph. Chance of rain 90%.

  • Humidity
    Humidity84%
  • UV index
    UV Index3 of 11
  • Sunrise
    Sunrise6:47 am
  • Sunset
    Sunset7:26 pm

Night

60°
Rain
Rain drop
83%
SSE 8 mph

Cloudy with periods of rain. Potential for heavy rainfall. Low around 60F. Winds SSE at 5 to 10 mph. Chance of rain 80%. Rainfall near a half an inch.

  • Humidity
    Humidity81%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise7:22 pm
  • Moonset
    Moonset6:24 am
  • Moon Phase - Day 14 Full Moon

Thu 02

Thunderstorms Thunderstorms
71°/54°
Rain drop 82%
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Day

71°
Thunderstorms
Rain drop
82%
SSW 15 mph

Rain early with thunderstorms developing in the afternoon. High 71F. Winds SSW at 10 to 20 mph. Chance of rain 80%.

  • Humidity
    Humidity78%
  • UV index
    UV Index3 of 11
  • Sunrise
    Sunrise6:46 am
  • Sunset
    Sunset7:27 pm

Night

54°
Scattered Showers Night
Rain drop
52%
W 9 mph

Rain showers early with mostly cloudy conditions late. Low 54F. Winds W at 5 to 10 mph. Chance of rain 50%.

  • Humidity
    Humidity82%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise8:26 pm
  • Moonset
    Moonset6:46 am
  • Moon Phase - Day 15 Full Moon

Fri 03

Partly Cloudy Day AM Clouds/PM Sun
77°/56°
Rain drop 24%
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Day

77°
Partly Cloudy Day
Rain drop
24%
SSE 11 mph

Cloudy skies early, followed by partial clearing. High 77F. Winds SSE at 10 to 15 mph.

  • Humidity
    Humidity69%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise6:44 am
  • Sunset
    Sunset7:28 pm

Night

56°
Rain
Rain drop
78%
S 10 mph

Scattered thunderstorms in the evening, then mainly cloudy overnight with light rain possible. Low 56F. Winds S at 5 to 10 mph. Chance of rain 80%.

  • Humidity
    Humidity79%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise9:29 pm
  • Moonset
    Moonset7:10 am
  • Moon Phase - Day 16 Waning Gibbous

Sat 04

Rain Rain
59°/39°
Rain drop 68%
Add

Day

59°
Rain
Rain drop
68%
W 14 mph

A steady rain in the morning. Showers continuing in the afternoon. High 59F. Winds W at 10 to 20 mph. Chance of rain 70%. Rainfall around a quarter of an inch.

  • Humidity
    Humidity76%
  • UV index
    UV Index4 of 11
  • Sunrise
    Sunrise6:43 am
  • Sunset
    Sunset7:29 pm

Night

39°
Showers
Rain drop
34%
WNW 13 mph

Cloudy with a few showers. Low 39F. Winds WNW at 10 to 15 mph. Chance of rain 30%.

  • Humidity
    Humidity63%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise10:32 pm
  • Moonset
    Moonset7:37 am
  • Moon Phase - Day 17 Waning Gibbous

Sun 05

Partly Cloudy Day Partly Cloudy
61°/35°
Rain drop 13%
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Day

61°
Partly Cloudy Day
Rain drop
13%
NW 13 mph

Partly cloudy skies. High 61F. Winds NW at 10 to 15 mph.

  • Humidity
    Humidity50%
  • UV index
    UV Index7 of 11
  • Sunrise
    Sunrise6:41 am
  • Sunset
    Sunset7:30 pm

Night

35°
Clear Night
Mixed precipitation
6%
NW 8 mph

Clear skies. Low around 35F. Winds NW at 5 to 10 mph.

  • Humidity
    Humidity64%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise11:34 pm
  • Moonset
    Moonset8:08 am
  • Moon Phase - Day 18 Waning Gibbous

Mon 06

Sunny Sunny
67°/41°
Rain drop 6%
Add

Day

67°
Sunny
Rain drop
6%
SW 8 mph

Sunny. High 67F. Winds SW at 5 to 10 mph.

  • Humidity
    Humidity48%
  • UV index
    UV Index7 of 11
  • Sunrise
    Sunrise6:40 am
  • Sunset
    Sunset7:31 pm

Night

41°
Mostly Clear Night
Rain drop
4%
SSE 6 mph

Mostly clear skies. Low 41F. Winds light and variable.

  • Humidity
    Humidity58%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise--
  • Moonset
    Moonset8:45 am
  • Moon Phase - Day 19 Waning Gibbous

Tue 07

Partly Cloudy Day Partly Cloudy
71°/46°
Rain drop 6%
Add

Day

71°
Partly Cloudy Day
Rain drop
6%
S 9 mph

Sunshine and clouds mixed. High 71F. Winds S at 5 to 10 mph.

  • Humidity
    Humidity47%
  • UV index
    UV Index7 of 11
  • Sunrise
    Sunrise6:38 am
  • Sunset
    Sunset7:32 pm

Night

46°
Partly Cloudy Night
Rain drop
15%
SE 8 mph

A few clouds from time to time. Low 46F. Winds SE at 5 to 10 mph.

  • Humidity
    Humidity58%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise12:34 am
  • Moonset
    Moonset9:29 am
  • Moon Phase - Day 20 Waning Gibbous

Wed 08

Partly Cloudy Day Partly Cloudy
71°/48°
Rain drop 21%
Add

Day

71°
Partly Cloudy Day
Rain drop
21%
SSE 11 mph

Partly cloudy. High 71F. Winds SSE at 10 to 15 mph.

  • Humidity
    Humidity53%
  • UV index
    UV Index7 of 11
  • Sunrise
    Sunrise6:37 am
  • Sunset
    Sunset7:33 pm

Night

48°
Showers
Rain drop
47%
S 9 mph

Considerable cloudiness with occasional rain showers. Low 48F. Winds S at 5 to 10 mph. Chance of rain 50%.

  • Humidity
    Humidity65%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise1:28 am
  • Moonset
    Moonset10:20 am
  • Moon Phase - Day 21 Waning Gibbous

Thu 09

Showers Showers
73°/47°
Rain drop 42%
Add

Day

73°
Showers
Rain drop
42%
SSW 11 mph

Cloudy with occasional rain showers. High 73F. Winds SSW at 10 to 15 mph. Chance of rain 40%.

  • Humidity
    Humidity58%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise6:35 am
  • Sunset
    Sunset7:34 pm

Night

47°
Showers
Rain drop
50%
SSE 8 mph

Cloudy with showers. Low 47F. Winds SSE at 5 to 10 mph. Chance of rain 50%.

  • Humidity
    Humidity71%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise2:16 am
  • Moonset
    Moonset11:17 am
  • Moon Phase - Day 21 Waning Gibbous

Fri 10

Scattered Showers Day AM Showers
70°/48°
Rain drop 36%
Add

Day

70°
Scattered Showers Day
Rain drop
36%
S 11 mph

Rain showers early with some sunshine later in the day. High near 70F. Winds S at 10 to 15 mph. Chance of rain 40%.

  • Humidity
    Humidity59%
  • UV index
    UV Index7 of 11
  • Sunrise
    Sunrise6:34 am
  • Sunset
    Sunset7:35 pm

Night

48°
Showers
Rain drop
45%
SE 9 mph

Overcast with showers at times. Low 48F. Winds SE at 5 to 10 mph. Chance of rain 50%.

  • Humidity
    Humidity69%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise2:57 am
  • Moonset
    Moonset12:20 pm
  • Moon Phase - Day 22 Last Quarter

Sat 11

Showers Showers
70°/50°
Rain drop 52%
Add

Day

70°
Showers
Rain drop
52%
S 11 mph

Cloudy with occasional rain showers. High near 70F. Winds S at 10 to 15 mph. Chance of rain 50%.

  • Humidity
    Humidity60%
  • UV index
    UV Index4 of 11
  • Sunrise
    Sunrise6:32 am
  • Sunset
    Sunset7:36 pm

Night

50°
Showers
Rain drop
54%
SE 8 mph

Considerable cloudiness with occasional rain showers. Low around 50F. Winds SE at 5 to 10 mph. Chance of rain 50%.

  • Humidity
    Humidity66%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise3:31 am
  • Moonset
    Moonset1:24 pm
  • Moon Phase - Day 23 Waning Crescent

Sun 12

Showers Showers
70°/49°
Rain drop 50%
Add

Day

70°
Showers
Rain drop
50%
SSW 10 mph

Overcast with rain showers at times. High near 70F. Winds SSW at 10 to 15 mph. Chance of rain 50%.

  • Humidity
    Humidity60%
  • UV index
    UV Index4 of 11
  • Sunrise
    Sunrise6:31 am
  • Sunset
    Sunset7:37 pm

Night

49°
Showers
Rain drop
59%
SE 8 mph

Overcast with rain showers at times. Low 49F. Winds SE at 5 to 10 mph. Chance of rain 60%.

  • Humidity
    Humidity69%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise4:01 am
  • Moonset
    Moonset2:30 pm
  • Moon Phase - Day 24 Waning Crescent
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