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

As of 8:46 pm CDT
alertLevel3

There is a marginal risk of severe weather tonight. Wind, tornadoes and hail are possible. Look out for powerful tornadoes.

Tonight

Showers Thundershowers
--/54°
Rain drop 100%
Subtract

Night

54°
Showers
Rain drop
100%
SSW 12 mph

Rain showers early then thundershowers overnight. Gusty winds and small hail are possible. Low 54F. Winds SSW at 10 to 15 mph. Chance of rain 100%.

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  • Humidity
    Humidity77%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise9:28 pm
  • Moonset
    Moonset7:10 am
  • Moon Phase - Day 16 Waning Gibbous

Sat 04

Cloudy Cloudy
58°/38°
Rain drop 24%
Add

Day

58°
Cloudy
Rain drop
24%
WNW 15 mph

Cloudy. High 58F. Winds WNW at 10 to 20 mph.

  • Humidity
    Humidity72%
  • UV index
    UV Index3 of 11
  • Sunrise
    Sunrise6:42 am
  • Sunset
    Sunset7:29 pm

Night

38°
Clear Night
Mixed precipitation
4%
NW 13 mph

Clear skies. Low 38F. Winds NW at 10 to 20 mph.

  • Humidity
    Humidity64%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise10:32 pm
  • Moonset
    Moonset7:36 am
  • Moon Phase - Day 17 Waning Gibbous

Sun 05

Sunny Sunny
62°/39°
Rain drop 4%
Add

Day

62°
Sunny
Rain drop
4%
NW 12 mph

A mainly sunny sky. High 62F. Winds NW at 10 to 15 mph.

  • Humidity
    Humidity49%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise6:41 am
  • Sunset
    Sunset7:30 pm

Night

39°
Clear Night
Mixed precipitation
5%
WNW 6 mph

A mostly clear sky. Low 39F. Winds WNW at 5 to 10 mph.

  • Humidity
    Humidity65%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise11:34 pm
  • Moonset
    Moonset8:08 am
  • Moon Phase - Day 18 Waning Gibbous

Mon 06

Mostly Clear Day Mostly Sunny
65°/39°
Rain drop 5%
Add

Day

65°
Mostly Clear Day
Rain drop
5%
NW 11 mph

Generally sunny despite a few afternoon clouds. High around 65F. Winds NW at 10 to 15 mph.

  • Humidity
    Humidity48%
  • UV index
    UV Index7 of 11
  • Sunrise
    Sunrise6:39 am
  • Sunset
    Sunset7:31 pm

Night

39°
Mostly Cloudy Night
Mixed precipitation
23%
NNE 8 mph

Mostly cloudy skies. Low 39F. Winds NNE at 5 to 10 mph.

  • Humidity
    Humidity51%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise--
  • Moonset
    Moonset8:45 am
  • Moon Phase - Day 19 Waning Gibbous

Tue 07

Cloudy Cloudy
57°/41°
Rain drop 9%
Add

Day

57°
Cloudy
Rain drop
9%
E 10 mph

Cloudy skies. High 57F. Winds E at 10 to 15 mph.

  • Humidity
    Humidity49%
  • UV index
    UV Index4 of 11
  • Sunrise
    Sunrise6:38 am
  • Sunset
    Sunset7:32 pm

Night

41°
Mostly Cloudy Night
Rain drop
1%
SE 9 mph

Mainly cloudy. Low 41F. Winds SE at 5 to 10 mph.

  • Humidity
    Humidity54%
  • 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
78°/56°
Rain drop 1%
Add

Day

78°
Partly Cloudy Day
Rain drop
1%
S 14 mph

Mostly cloudy skies early, then partly cloudy in the afternoon. High 78F. Winds S at 10 to 20 mph.

  • Humidity
    Humidity43%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise6:36 am
  • Sunset
    Sunset7:32 pm

Night

56°
Partly Cloudy Night
Rain drop
3%
S 11 mph

Partly cloudy. Low 56F. Winds S at 10 to 15 mph.

  • Humidity
    Humidity50%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise1:27 am
  • Moonset
    Moonset10:20 am
  • Moon Phase - Day 21 Waning Gibbous

Thu 09

Partly Cloudy Day Partly Cloudy
81°/58°
Rain drop 20%
Add

Day

81°
Partly Cloudy Day
Rain drop
20%
SSW 15 mph

Partly cloudy skies. High 81F. Winds SSW at 10 to 20 mph.

  • Humidity
    Humidity47%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise6:35 am
  • Sunset
    Sunset7:33 pm

Night

58°
Partly Cloudy Night
Rain drop
21%
S 11 mph

A few clouds. Low 58F. Winds S at 10 to 15 mph.

  • Humidity
    Humidity59%
  • 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 PM Showers
81°/60°
Rain drop 31%
Add

Day

81°
Scattered Showers Day
Rain drop
31%
S 13 mph

A mix of clouds and sun in the morning giving way to a few showers during the afternoon. High 81F. Winds S at 10 to 15 mph. Chance of rain 30%.

  • Humidity
    Humidity55%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise6:33 am
  • Sunset
    Sunset7:34 pm

Night

60°
Showers
Rain drop
49%
S 9 mph

Overcast with showers at times. Low near 60F. Winds S at 5 to 10 mph. Chance of rain 50%.

  • Humidity
    Humidity65%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise2:56 am
  • Moonset
    Moonset12:19 pm
  • Moon Phase - Day 22 Last Quarter

Sat 11

Showers Showers
76°/58°
Rain drop 59%
Add

Day

76°
Showers
Rain drop
59%
S 12 mph

Considerable cloudiness with occasional rain showers. High 76F. Winds S at 10 to 15 mph. Chance of rain 60%.

  • Humidity
    Humidity69%
  • UV index
    UV Index3 of 11
  • Sunrise
    Sunrise6:32 am
  • Sunset
    Sunset7:35 pm

Night

58°
Showers
Rain drop
59%
S 8 mph

Cloudy with showers. Low 58F. Winds S at 5 to 10 mph. Chance of rain 60%.

  • Humidity
    Humidity77%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise3:31 am
  • Moonset
    Moonset1:23 pm
  • Moon Phase - Day 23 Waning Crescent

Sun 12

Showers Showers
73°/59°
Rain drop 59%
Add

Day

73°
Showers
Rain drop
59%
SSW 10 mph

Cloudy with showers. High 73F. Winds SSW at 5 to 10 mph. Chance of rain 60%.

  • Humidity
    Humidity72%
  • UV index
    UV Index3 of 11
  • Sunrise
    Sunrise6:30 am
  • Sunset
    Sunset7:36 pm

Night

59°
Scattered Thunderstorms Night
Rain drop
56%
SSE 7 mph

Showers early then scattered thunderstorms developing late. Low 59F. Winds SSE at 5 to 10 mph. Chance of rain 60%.

  • Humidity
    Humidity78%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise4:01 am
  • Moonset
    Moonset2:30 pm
  • Moon Phase - Day 24 Waning Crescent

Mon 13

Scattered Thunderstorms Scattered Thunderstorms
77°/58°
Rain drop 59%
Add

Day

77°
Scattered Thunderstorms
Rain drop
59%
SSW 10 mph

Showers early then scattered thunderstorms developing later in the day. High 77F. Winds SSW at 10 to 15 mph. Chance of rain 60%.

  • Humidity
    Humidity69%
  • UV index
    UV Index4 of 11
  • Sunrise
    Sunrise6:29 am
  • Sunset
    Sunset7:37 pm

Night

58°
Scattered Thunderstorms Night
Rain drop
59%
SSW 7 mph

Variable clouds with scattered thunderstorms. Low 58F. Winds SSW at 5 to 10 mph. Chance of rain 60%.

  • Humidity
    Humidity77%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise4:27 am
  • Moonset
    Moonset3:36 pm
  • Moon Phase - Day 25 Waning Crescent

Tue 14

Scattered Thunderstorms AM Thunderstorms
73°/51°
Rain drop 59%
Add

Day

73°
Scattered Thunderstorms
Rain drop
59%
WSW 12 mph

Scattered thunderstorms in the morning, then mainly cloudy late. High 73F. Winds WSW at 10 to 15 mph. Chance of rain 60%.

  • Humidity
    Humidity65%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise6:28 am
  • Sunset
    Sunset7:38 pm

Night

51°
Scattered Thunderstorms Night
Rain drop
51%
WNW 8 mph

Variable clouds with showers and scattered thunderstorms. Storms more numerous during the evening. Low 51F. Winds WNW at 5 to 10 mph. Chance of rain 50%.

  • Humidity
    Humidity72%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise4:52 am
  • Moonset
    Moonset4:45 pm
  • Moon Phase - Day 26 Waning Crescent

Wed 15

Showers Showers
72°/51°
Rain drop 47%
Add

Day

72°
Showers
Rain drop
47%
W 11 mph

Considerable cloudiness with occasional rain showers. High 72F. Winds W at 10 to 15 mph. Chance of rain 50%.

  • Humidity
    Humidity60%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise6:26 am
  • Sunset
    Sunset7:39 pm

Night

51°
Showers
Rain drop
41%
NNW 8 mph

Considerable cloudiness with occasional rain showers. Low 51F. Winds NNW at 5 to 10 mph. Chance of rain 40%.

  • Humidity
    Humidity70%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise5:16 am
  • Moonset
    Moonset5:55 pm
  • Moon Phase - Day 27 Waning Crescent

Thu 16

Scattered Showers Day AM Showers
73°/51°
Rain drop 44%
Add

Day

73°
Scattered Showers Day
Rain drop
44%
W 10 mph

Showers in the morning with some clearing in the afternoon. High 73F. Winds W at 5 to 10 mph. Chance of rain 40%.

  • Humidity
    Humidity57%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise6:25 am
  • Sunset
    Sunset7:40 pm

Night

51°
Partly Cloudy Night
Rain drop
24%
E 7 mph

A few clouds. Low 51F. Winds E at 5 to 10 mph.

  • Humidity
    Humidity68%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise5:41 am
  • Moonset
    Moonset7:08 pm
  • Moon Phase - Day 28 Waning Crescent

Fri 17

Partly Cloudy Day Partly Cloudy
75°/52°
Rain drop 24%
Add

Day

75°
Partly Cloudy Day
Rain drop
24%
S 10 mph

Partly cloudy skies. High around 75F. Winds S at 5 to 10 mph.

  • Humidity
    Humidity58%
  • UV index
    UV Index7 of 11
  • Sunrise
    Sunrise6:23 am
  • Sunset
    Sunset7:41 pm

Night

52°
Partly Cloudy Night
Rain drop
24%
SSE 7 mph

Partly cloudy skies. Low 52F. Winds SSE at 5 to 10 mph.

  • Humidity
    Humidity64%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise6:10 am
  • Moonset
    Moonset8:24 pm
  • Moon Phase - Day 0 New Moon
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