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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 1:46 pm CDT

Today

Cloudy Cloudy
72°/58°
Rain drop 0%
Subtract

Day

72°
Cloudy
S 13 mph

Generally cloudy. Much warmer. High 72F. Winds S at 10 to 20 mph.

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  • Humidity
    Humidity31%
  • UV index
    UV Index2 of 11
  • Sunrise
    Sunrise6:52 am
  • Sunset
    Sunset7:23 pm

Night

58°
Partly Cloudy Night
Rain drop
3%
S 10 mph

Partly cloudy skies. Low 58F. Winds S at 10 to 15 mph.

  • Humidity
    Humidity49%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise4:08 pm
  • Moonset
    Moonset5:12 am
  • Moon Phase - Day 11 Waxing Gibbous

Mon 30

Mostly Clear Day Mostly Sunny
87°/64°
Rain drop 2%
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Day

87°
Mostly Clear Day
Rain drop
2%
SSW 16 mph

A few clouds early, otherwise mostly sunny. 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

64°
Partly Cloudy Night
Rain drop
3%
SSW 13 mph

A few clouds. Low 64F. Winds SSW at 10 to 15 mph.

  • Humidity
    Humidity53%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise5:14 pm
  • Moonset
    Moonset5:38 am
  • Moon Phase - Day 12 Waxing Gibbous

Tue 31

Mostly Cloudy Day Mostly Cloudy
85°/54°
Rain drop 24%
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Day

85°
Mostly Cloudy Day
Rain drop
24%
SSW 20 mph

A mix of clouds and sun early, then becoming cloudy later in the day. A stray afternoon thunderstorm is possible. High around 85F. Winds SSW at 15 to 25 mph.

  • Humidity
    Humidity48%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise6:49 am
  • Sunset
    Sunset7:25 pm

Night

54°
Rain
Rain drop
75%
NW 9 mph

Rain likely. Low 54F. Winds NW at 5 to 10 mph. Chance of rain 80%. Rainfall near a quarter of an inch.

  • Humidity
    Humidity68%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise6:19 pm
  • Moonset
    Moonset6:01 am
  • Moon Phase - Day 13 Waxing Gibbous

Wed 01

Rain Rain
64°/56°
Rain drop 83%
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Day

64°
Rain
Rain drop
83%
ENE 10 mph

Cloudy with periods of rain. Potential for heavy rainfall. High 64F. Winds ENE at 5 to 10 mph. Chance of rain 80%. Rainfall near a quarter of an inch.

  • Humidity
    Humidity79%
  • UV index
    UV Index3 of 11
  • Sunrise
    Sunrise6:47 am
  • Sunset
    Sunset7:26 pm

Night

56°
Rain
Rain drop
97%
SE 9 mph

Cloudy with periods of rain. Potential for heavy rainfall. Low 56F. Winds SE at 5 to 10 mph. Chance of rain 100%. Rainfall possibly over one inch.

  • Humidity
    Humidity84%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise7:22 pm
  • Moonset
    Moonset6:23 am
  • Moon Phase - Day 14 Full Moon

Thu 02

Rain Rain
68°/49°
Rain drop 90%
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Day

68°
Rain
Rain drop
90%
SSW 13 mph

Rain. Thunder possible. High 68F. Winds SSW at 10 to 20 mph. Chance of rain 90%.

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

Night

49°
Showers
Rain drop
51%
WNW 10 mph

Rain showers in the evening becoming more intermittent overnight. Low 49F. Winds WNW at 5 to 10 mph. Chance of rain 50%.

  • Humidity
    Humidity83%
  • 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
73°/58°
Rain drop 24%
Add

Day

73°
Partly Cloudy Day
Rain drop
24%
SE 10 mph

Cloudy early with partial sunshine expected late. High 73F. Winds SE at 5 to 10 mph.

  • Humidity
    Humidity74%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise6:44 am
  • Sunset
    Sunset7:28 pm

Night

58°
Showers
Rain drop
59%
SSE 8 mph

Overcast with rain showers at times. Low 58F. Winds SSE at 5 to 10 mph. Chance of rain 60%.

  • Humidity
    Humidity81%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise9:28 pm
  • Moonset
    Moonset7:10 am
  • Moon Phase - Day 16 Waning Gibbous

Sat 04

Thunderstorms Thunderstorms
68°/46°
Rain drop 76%
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Day

68°
Thunderstorms
Rain drop
76%
SW 14 mph

Rain. Thunderstorms possible...mainly in the afternoon. High 68F. Winds SW at 10 to 20 mph. Chance of rain 80%.

  • Humidity
    Humidity78%
  • UV index
    UV Index3 of 11
  • Sunrise
    Sunrise6:42 am
  • Sunset
    Sunset7:29 pm

Night

46°
Rain
Rain drop
70%
WNW 13 mph

Rain early...then remaining cloudy with showers late. Low 46F. Winds WNW at 10 to 15 mph. Chance of rain 70%. Rainfall around a quarter of an inch.

  • Humidity
    Humidity76%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise10:32 pm
  • Moonset
    Moonset7:36 am
  • Moon Phase - Day 17 Waning Gibbous

Sun 05

Scattered Showers Day AM Showers
59°/35°
Rain drop 32%
Add

Day

59°
Scattered Showers Day
Rain drop
32%
WNW 14 mph

Chance of a shower or two during the morning, followed by partly cloudy skies in the afternoon. High 59F. Winds WNW at 10 to 20 mph. Chance of rain 30%.

  • Humidity
    Humidity55%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise6:41 am
  • Sunset
    Sunset7:30 pm

Night

35°
Partly Cloudy Night
Mixed precipitation
13%
NW 10 mph

Partly cloudy. Low around 35F. Winds NW at 5 to 10 mph.

  • Humidity
    Humidity68%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise11:34 pm
  • Moonset
    Moonset8:08 am
  • Moon Phase - Day 18 Waning Gibbous

Mon 06

Partly Cloudy Day Partly Cloudy
62°/37°
Rain drop 5%
Add

Day

62°
Partly Cloudy Day
Rain drop
5%
NW 10 mph

Partly cloudy skies. High 62F. Winds NW at 5 to 10 mph.

  • Humidity
    Humidity52%
  • UV index
    UV Index7 of 11
  • Sunrise
    Sunrise6:39 am
  • Sunset
    Sunset7:31 pm

Night

37°
Clear Night
Mixed precipitation
12%
W 7 mph

Clear skies. Low 37F. Winds W at 5 to 10 mph.

  • Humidity
    Humidity61%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise--
  • Moonset
    Moonset8:45 am
  • Moon Phase - Day 19 Waning Gibbous

Tue 07

Mostly Clear Day Mostly Sunny
69°/43°
Rain drop 9%
Add

Day

69°
Mostly Clear Day
Rain drop
9%
S 10 mph

Mostly sunny skies. High 69F. Winds S at 10 to 15 mph.

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

Night

43°
Partly Cloudy Night
Rain drop
24%
SSE 7 mph

A few clouds from time to time. Low 43F. Winds SSE at 5 to 10 mph.

  • Humidity
    Humidity59%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise12:34 am
  • Moonset
    Moonset9:28 am
  • Moon Phase - Day 20 Waning Gibbous

Wed 08

Partly Cloudy Day Partly Cloudy
71°/45°
Rain drop 24%
Add

Day

71°
Partly Cloudy Day
Rain drop
24%
SSE 11 mph

Partly cloudy skies in the morning will give way to cloudy skies during the afternoon. High 71F. Winds SSE at 10 to 15 mph.

  • Humidity
    Humidity52%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise6:36 am
  • Sunset
    Sunset7:32 pm

Night

45°
Scattered Showers Night
Rain drop
32%
SE 9 mph

Mostly cloudy skies with a few showers late. Low around 45F. Winds SE at 5 to 10 mph. Chance of rain 30%.

  • Humidity
    Humidity64%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise1:27 am
  • Moonset
    Moonset10:20 am
  • Moon Phase - Day 21 Waning Gibbous

Thu 09

Mostly Cloudy Day Mostly Cloudy
75°/48°
Rain drop 24%
Add

Day

75°
Mostly Cloudy Day
Rain drop
24%
S 11 mph

Mainly cloudy. High near 75F. Winds S at 10 to 15 mph.

  • Humidity
    Humidity54%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise6:35 am
  • Sunset
    Sunset7:33 pm

Night

48°
Scattered Showers Night
Rain drop
32%
S 9 mph

Mostly cloudy during the evening. A few showers developing late. Low 48F. Winds S at 5 to 10 mph. Chance of rain 30%.

  • Humidity
    Humidity68%
  • 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
72°/49°
Rain drop 31%
Add

Day

72°
Scattered Showers Day
Rain drop
31%
SSW 11 mph

A few showers in the morning, then clouds lingering in the afternoon. High 72F. Winds SSW at 10 to 15 mph. Chance of rain 30%.

  • Humidity
    Humidity59%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise6:33 am
  • Sunset
    Sunset7:34 pm

Night

49°
Showers
Rain drop
58%
S 8 mph

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

  • Humidity
    Humidity70%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise2:56 am
  • Moonset
    Moonset12:19 pm
  • Moon Phase - Day 22 Last Quarter

Sat 11

Scattered Showers Day AM Showers
68°/49°
Rain drop 43%
Add

Day

68°
Scattered Showers Day
Rain drop
43%
SW 11 mph

Rain showers early with mostly cloudy conditions later in the day. High 68F. Winds SW at 10 to 15 mph. Chance of rain 40%.

  • Humidity
    Humidity63%
  • UV index
    UV Index4 of 11
  • Sunrise
    Sunrise6:32 am
  • Sunset
    Sunset7:35 pm

Night

49°
Scattered Showers Night
Rain drop
47%
SE 9 mph

Partly cloudy skies early will give way to occasional showers later during the night. Low 49F. Winds SE at 5 to 10 mph. Chance of rain 50%.

  • Humidity
    Humidity68%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise3:31 am
  • Moonset
    Moonset1:23 pm
  • Moon Phase - Day 23 Waning Crescent

Sun 12

Showers Showers
71°/51°
Rain drop 50%
Add

Day

71°
Showers
Rain drop
50%
SSW 11 mph

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

  • Humidity
    Humidity59%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise6:30 am
  • Sunset
    Sunset7:36 pm

Night

51°
Showers
Rain drop
54%
SE 8 mph

Cloudy with showers. Low 51F. Winds SE at 5 to 10 mph. Chance of rain 50%.

  • 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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