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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 2:34 am CDT

Tonight

Clear Night Clear
--/29°
Rain drop 2%
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Night

29°
Clear Night
Mixed precipitation
2%
NW 6 mph

Clear skies. Low 29F. Winds light and variable.

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  • Humidity
    Humidity78%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise2:44 am
  • Moonset
    Moonset11:35 am
  • Moon Phase - Day 22 Last Quarter

Thu 12

Mostly Clear Day Mostly Sunny
56°/46°
Rain drop 2%
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Day

56°
Mostly Clear Day
Rain drop
2%
WSW 13 mph

Generally sunny despite a few afternoon clouds. High 56F. Winds WSW at 10 to 15 mph.

  • Humidity
    Humidity50%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:18 am
  • Sunset
    Sunset7:06 pm

Night

46°
Partly Cloudy Night
SSW 17 mph

A few clouds from time to time. Low 46F. Winds SSW at 10 to 20 mph.

  • Humidity
    Humidity40%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise3:36 am
  • Moonset
    Moonset12:30 pm
  • Moon Phase - Day 23 Waning Crescent

Fri 13

Partly Cloudy Day Partly Cloudy
61°/35°
Rain drop 0%
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Day

61°
Partly Cloudy Day
WNW 16 mph

Sunshine and clouds mixed. High 61F. Winds WNW at 10 to 20 mph.

  • Humidity
    Humidity36%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:16 am
  • Sunset
    Sunset7:07 pm

Night

35°
Partly Cloudy Night
Mixed precipitation
3%
NE 6 mph

Partly cloudy skies. Low near 35F. Winds light and variable.

  • Humidity
    Humidity53%
  • 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 Partly Cloudy
67°/53°
Rain drop 4%
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Day

67°
Partly Cloudy Day
Rain drop
4%
ESE 13 mph

Sunshine and clouds mixed. High 67F. Winds ESE at 10 to 15 mph.

  • Humidity
    Humidity47%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:15 am
  • Sunset
    Sunset7:08 pm

Night

53°
Mostly Cloudy Night
Rain drop
19%
SSE 11 mph

Partly cloudy skies in the evening, then becoming cloudy overnight. Low 53F. Winds SSE at 10 to 15 mph.

  • Humidity
    Humidity60%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise5:00 am
  • Moonset
    Moonset2:35 pm
  • Moon Phase - Day 25 Waning Crescent

Sun 15

Thunderstorms Thunderstorms
62°/15°
Rain drop 94%
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Day

62°
Thunderstorms
Rain drop
94%
SSW 17 mph

Thunderstorms likely. High 62F. Winds SSW at 15 to 25 mph. Chance of rain 90%.

  • Humidity
    Humidity77%
  • UV index
    UV Index3 of 11
  • Sunrise
    Sunrise7:13 am
  • Sunset
    Sunset7:09 pm

Night

15°
Rain, Snow, Wintery Mix
Snowflake
63%
WNW 21 mph

Cloudy with rain and snow in the evening. Snow showers and windy late. Low near 15F. Winds WNW at 20 to 30 mph. Chance of snow 60%. Snow accumulations less than one inch.

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

Mon 16

Partly Cloudy Day AM Clouds/PM Sun
29°/12°
Rain drop 18%
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Day

29°
Partly Cloudy Day
Mixed precipitation
18%
WNW 19 mph

Cloudy skies early will become partly cloudy later in the day. Cold. High 29F. Winds WNW at 15 to 25 mph.

  • Humidity
    Humidity51%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:12 am
  • Sunset
    Sunset7:10 pm

Night

12°
Partly Cloudy Night
Snowflake
1%
NW 13 mph

Some clouds early will give way to generally clear conditions overnight. Low 12F. 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

Partly Cloudy Day Partly Cloudy
38°/29°
Rain drop 1%
Add

Day

38°
Partly Cloudy Day
Mixed precipitation
1%
WSW 6 mph

Partly cloudy skies. Cool. High 38F. Winds light and variable.

  • Humidity
    Humidity43%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:10 am
  • Sunset
    Sunset7:11 pm

Night

29°
Cloudy
Mixed precipitation
15%
SE 8 mph

Cloudy. Low 29F. Winds SE at 5 to 10 mph.

  • Humidity
    Humidity56%
  • 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
61°/38°
Rain drop 5%
Add

Day

61°
Partly Cloudy Day
Rain drop
5%
S 10 mph

Sunshine and clouds mixed. High 61F. Winds S at 10 to 15 mph.

  • Humidity
    Humidity50%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:09 am
  • Sunset
    Sunset7:12 pm

Night

38°
Partly Cloudy Night
Mixed precipitation
6%
S 6 mph

A few clouds from time to time. Low 38F. Winds light and variable.

  • Humidity
    Humidity67%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise6:52 am
  • Moonset
    Moonset7:07 pm
  • Moon Phase - Day 29 New Moon

Thu 19

Partly Cloudy Day Partly Cloudy
74°/48°
Rain drop 6%
Add

Day

74°
Partly Cloudy Day
Rain drop
6%
SSW 9 mph

Partly cloudy. High 74F. Winds SSW at 5 to 10 mph.

  • Humidity
    Humidity55%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:07 am
  • Sunset
    Sunset7:13 pm

Night

48°
Partly Cloudy Night
Rain drop
10%
SSW 7 mph

Partly cloudy skies. Low 48F. Winds SSW at 5 to 10 mph.

  • Humidity
    Humidity63%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise7:16 am
  • Moonset
    Moonset8:18 pm
  • Moon Phase - Day 1 Waxing Crescent

Fri 20

Partly Cloudy Day Partly Cloudy
78°/48°
Rain drop 6%
Add

Day

78°
Partly Cloudy Day
Rain drop
6%
W 8 mph

Partly cloudy skies. High 78F. Winds W at 5 to 10 mph.

  • Humidity
    Humidity52%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:06 am
  • Sunset
    Sunset7:14 pm

Night

48°
Partly Cloudy Night
Rain drop
7%
NNW 6 mph

Partly cloudy. Low 48F. Winds NNW at 5 to 10 mph.

  • Humidity
    Humidity61%
  • 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
73°/47°
Rain drop 3%
Add

Day

73°
Mostly Clear Day
Rain drop
3%
NE 10 mph

Mostly sunny skies. High 73F. Winds NE at 5 to 10 mph.

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

Night

47°
Partly Cloudy Night
Rain drop
12%
SE 8 mph

A few clouds from time to time. Low 47F. Winds SE at 5 to 10 mph.

  • Humidity
    Humidity58%
  • 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
74°/47°
Rain drop 8%
Add

Day

74°
Partly Cloudy Day
Rain drop
8%
S 12 mph

Partly cloudy. High 74F. Winds S at 10 to 15 mph.

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

Night

47°
Partly Cloudy Night
Rain drop
23%
SE 9 mph

A few clouds. Low 47F. Winds SE at 5 to 10 mph.

  • Humidity
    Humidity56%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise8:47 am
  • Moonset
    Moonset--
  • Moon Phase - Day 4 Waxing Crescent

Mon 23

Scattered Showers Day PM Showers
68°/47°
Rain drop 35%
Add

Day

68°
Scattered Showers Day
Rain drop
35%
S 12 mph

Partly cloudy in the morning. Increasing clouds with periods of showers later in the day. High 68F. Winds S at 10 to 15 mph. Chance of rain 40%.

  • Humidity
    Humidity54%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise7:01 am
  • Sunset
    Sunset7:17 pm

Night

47°
Scattered Showers Night
Rain drop
35%
SW 9 mph

Rain showers early with mostly cloudy conditions late. Low 47F. Winds SW at 5 to 10 mph. Chance of rain 40%.

  • Humidity
    Humidity62%
  • 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
68°/46°
Rain drop 19%
Add

Day

68°
Partly Cloudy Day
Rain drop
19%
WNW 13 mph

Partly cloudy. High 68F. N winds shifting to WSW at 10 to 15 mph.

  • Humidity
    Humidity55%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise6:59 am
  • Sunset
    Sunset7:18 pm

Night

46°
Scattered Showers Night
Rain drop
35%
NE 10 mph

Partly cloudy skies early followed by increasing clouds with showers developing later at night. Low 46F. Winds NE at 5 to 10 mph. Chance of rain 40%.

  • Humidity
    Humidity66%
  • 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°/45°
Rain drop 24%
Add

Day

67°
Partly Cloudy Day
Rain drop
24%
NE 9 mph

Intervals of clouds and sunshine. High 67F. Winds NE at 5 to 10 mph.

  • Humidity
    Humidity59%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise6:58 am
  • Sunset
    Sunset7:19 pm

Night

45°
Scattered Showers Night
Rain drop
35%
NE 7 mph

A few showers in the evening, then clouds lingering overnight. Low around 45F. Winds NE at 5 to 10 mph. Chance of rain 40%.

  • Humidity
    Humidity68%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise11:24 am
  • Moonset
    Moonset2:25 am
  • Moon Phase - Day 7 First Quarter
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