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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 4:39 pm CDT

Tonight

Partly Cloudy Night Partly Cloudy
--/35°
Rain drop 2%
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Night

35°
Partly Cloudy Night
Mixed precipitation
2%
NNE 11 mph

Partly cloudy skies. Low around 35F. Winds NNE at 10 to 15 mph.

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  • Humidity
    Humidity48%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise4:22 am
  • Moonset
    Moonset1:30 pm
  • Moon Phase - Day 24 Waning Crescent

Sat 14

Partly Cloudy Day AM Clouds/PM Sun
63°/54°
Rain drop 2%
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Day

63°
Partly Cloudy Day
Rain drop
2%
ESE 14 mph

Cloudy early, becoming mostly sunny in the afternoon. High 63F. Winds ESE at 10 to 20 mph.

  • Humidity
    Humidity45%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:15 am
  • Sunset
    Sunset7:08 pm

Night

54°
Partly Cloudy Night
Rain drop
4%
SSE 13 mph

A few clouds. Low 54F. Winds SSE at 10 to 15 mph.

  • Humidity
    Humidity61%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise5:00 am
  • Moonset
    Moonset2:35 pm
  • Moon Phase - Day 25 Waning Crescent

Sun 15

Scattered Thunderstorms PM Thunderstorms/Wind
66°/18°
Rain drop 92%
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Day

66°
Scattered Thunderstorms
Rain drop
92%
SSW 20 mph

Cloudy and windy during the morning. Thunderstorms likely in the afternoon. Potential for severe thunderstorms. High 66F. Winds SSW at 20 to 30 mph. Chance of rain 90%.

  • Humidity
    Humidity66%
  • UV index
    UV Index2 of 11
  • Sunrise
    Sunrise7:13 am
  • Sunset
    Sunset7:09 pm

Night

18°
Rain, Snow, Wintery Mix
Snowflake
93%
WNW 23 mph

Periods of rain and snow in the evening. Windy and remaining overcast late. Low 18F. Winds WNW at 20 to 30 mph. Chance of snow 90%. Winds could occasionally gust over 40 mph.

  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise5:33 am
  • Moonset
    Moonset3:41 pm
  • Moon Phase - Day 26 Waning Crescent

Mon 16

Cloudy Cloudy
28°/13°
Rain drop 14%
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Day

28°
Cloudy
Mixed precipitation
14%
WNW 21 mph

Cloudy skies. Windy during the morning. High 28F. Winds WNW at 20 to 30 mph. Winds could occasionally gust over 40 mph.

  • Humidity
    Humidity54%
  • UV index
    UV Index3 of 11
  • Sunrise
    Sunrise7:12 am
  • Sunset
    Sunset7:10 pm

Night

13°
Partly Cloudy Night
Snowflake
1%
NW 15 mph

A few clouds. Low 13F. Winds NW at 10 to 20 mph.

  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise6:02 am
  • Moonset
    Moonset4:49 pm
  • Moon Phase - Day 27 Waning Crescent

Tue 17

Mostly Clear Day Mostly Sunny
39°/33°
Rain drop 1%
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Day

39°
Mostly Clear Day
Mixed precipitation
1%
W 6 mph

Mostly sunny skies. Cool. High 39F. Winds light and variable.

  • Humidity
    Humidity37%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:10 am
  • Sunset
    Sunset7:11 pm

Night

33°
Cloudy
Mixed precipitation
10%
SSE 10 mph

Overcast. Low 33F. Winds SSE at 10 to 15 mph.

  • Humidity
    Humidity49%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise6:28 am
  • Moonset
    Moonset5:57 pm
  • Moon Phase - Day 28 Waning Crescent

Wed 18

Partly Cloudy Day Partly Cloudy
67°/37°
Rain drop 1%
Add

Day

67°
Partly Cloudy Day
Rain drop
1%
SW 12 mph

Partly cloudy. High 67F. Winds SW at 10 to 15 mph.

  • Humidity
    Humidity47%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:09 am
  • Sunset
    Sunset7:12 pm

Night

37°
Mostly Clear Night
Mixed precipitation
7%
W 5 mph

Mostly clear skies. Low 37F. Winds light and variable.

  • Humidity
    Humidity72%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise6:52 am
  • Moonset
    Moonset7:07 pm
  • Moon Phase - Day 29 New Moon

Thu 19

Mostly Clear Day Mostly Sunny
74°/46°
Rain drop 7%
Add

Day

74°
Mostly Clear Day
Rain drop
7%
SW 8 mph

Except for a few afternoon clouds, mainly sunny. High 74F. Winds SW at 5 to 10 mph.

  • Humidity
    Humidity54%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:07 am
  • Sunset
    Sunset7:13 pm

Night

46°
Partly Cloudy Night
Rain drop
6%
SW 6 mph

A few clouds. Low 46F. Winds light and variable.

  • Humidity
    Humidity66%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise7:16 am
  • Moonset
    Moonset8:18 pm
  • Moon Phase - Day 1 Waxing Crescent

Fri 20

Mostly Clear Day Mostly Sunny
71°/47°
Rain drop 6%
Add

Day

71°
Mostly Clear Day
Rain drop
6%
NW 9 mph

Sunny along with a few clouds. High 71F. Winds NW at 5 to 10 mph.

  • Humidity
    Humidity57%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:06 am
  • Sunset
    Sunset7:14 pm

Night

47°
Partly Cloudy Night
Rain drop
5%
S 5 mph

A few clouds from time to time. Low 47F. Winds light and variable.

  • Humidity
    Humidity65%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise7:42 am
  • Moonset
    Moonset9:31 pm
  • Moon Phase - Day 2 Waxing Crescent

Sat 21

Mostly Clear Day Mostly Sunny
76°/43°
Rain drop 4%
Add

Day

76°
Mostly Clear Day
Rain drop
4%
WNW 10 mph

Mostly sunny skies. High 76F. Winds WNW at 5 to 10 mph.

  • Humidity
    Humidity51%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise7:04 am
  • Sunset
    Sunset7:15 pm

Night

43°
Mostly Clear Night
Rain drop
5%
NNE 7 mph

Mostly clear skies. Low 43F. Winds NNE at 5 to 10 mph.

  • Humidity
    Humidity59%
  • 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
71°/49°
Rain drop 4%
Add

Day

71°
Partly Cloudy Day
Rain drop
4%
E 9 mph

Partly cloudy skies. High 71F. Winds E at 5 to 10 mph.

  • Humidity
    Humidity47%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise7:02 am
  • Sunset
    Sunset7:16 pm

Night

49°
Partly Cloudy Night
Rain drop
3%
SE 8 mph

Partly cloudy. Low 49F. Winds SE at 5 to 10 mph.

  • Humidity
    Humidity54%
  • 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
77°/48°
Rain drop 3%
Add

Day

77°
Partly Cloudy Day
Rain drop
3%
S 11 mph

Partly cloudy skies. High 77F. Winds S at 10 to 15 mph.

  • Humidity
    Humidity43%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise7:01 am
  • Sunset
    Sunset7:17 pm

Night

48°
Partly Cloudy Night
Rain drop
6%
E 10 mph

A few clouds. Low 48F. Winds E at 5 to 10 mph.

  • Humidity
    Humidity51%
  • 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
71°/46°
Rain drop 9%
Add

Day

71°
Partly Cloudy Day
Rain drop
9%
ENE 11 mph

Intervals of clouds and sunshine. High 71F. Winds ENE at 10 to 15 mph.

  • Humidity
    Humidity49%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise6:59 am
  • Sunset
    Sunset7:18 pm

Night

46°
Scattered Showers Night
Rain drop
33%
E 9 mph

Partly cloudy during the evening. A few showers developing later during the night. Low 46F. Winds E at 5 to 10 mph. Chance of rain 30%.

  • Humidity
    Humidity59%
  • 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
67°/46°
Rain drop 15%
Add

Day

67°
Partly Cloudy Day
Rain drop
15%
SSE 13 mph

Mostly cloudy skies early will become partly cloudy later in the day. High 67F. Winds SSE at 10 to 15 mph.

  • Humidity
    Humidity52%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise6:58 am
  • Sunset
    Sunset7:19 pm

Night

46°
Partly Cloudy Night
Rain drop
24%
SE 9 mph

Partly cloudy in the evening with more clouds for later at night. Low 46F. Winds SE at 5 to 10 mph.

  • Humidity
    Humidity61%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise11:24 am
  • Moonset
    Moonset2:26 am
  • Moon Phase - Day 7 First Quarter

Thu 26

Mostly Cloudy Day Mostly Cloudy
69°/49°
Rain drop 24%
Add

Day

69°
Mostly Cloudy Day
Rain drop
24%
S 14 mph

Mostly cloudy. High 69F. Winds S at 10 to 20 mph.

  • Humidity
    Humidity55%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise6:56 am
  • Sunset
    Sunset7:20 pm

Night

49°
Scattered Showers Night
Rain drop
46%
S 10 mph

Mostly cloudy in the evening then periods of showers after midnight. Low 49F. Winds S at 10 to 15 mph. Chance of rain 50%.

  • Humidity
    Humidity65%
  • 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
64°/42°
Rain drop 53%
Add

Day

64°
Scattered Showers Day
Rain drop
53%
W 13 mph

Showers in the morning with some clearing in the afternoon. High 64F. Winds W at 10 to 15 mph. Chance of rain 50%.

  • Humidity
    Humidity59%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise6:55 am
  • Sunset
    Sunset7:21 pm

Night

42°
Scattered Showers Night
Rain drop
33%
NNW 10 mph

Partly cloudy skies early followed by mostly cloudy skies and a few showers later at night. Low 42F. Winds NNW at 5 to 10 mph. Chance of rain 30%.

  • Humidity
    Humidity60%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise1:47 pm
  • Moonset
    Moonset4:07 am
  • Moon Phase - Day 9 Waxing Gibbous
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