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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 6:52 pm CDT
alertLevel3

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

Tonight

Thunderstorms Thunderstorms
--/58°
Rain drop 99%
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Night

58°
Thunderstorms
Rain drop
99%
SSW 16 mph

Scattered thunderstorms early, then mainly cloudy overnight with thunderstorms likely. A few storms may be severe. Low 58F. Winds SSW at 10 to 20 mph. Chance of rain 100%.

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  • Humidity
    Humidity74%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise1:46 am
  • Moonset
    Moonset10:49 am
  • Moon Phase - Day 21 Waning Gibbous

Wed 11

Scattered Thunderstorms AM Thunderstorms
62°/30°
Rain drop 97%
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Day

62°
Scattered Thunderstorms
Rain drop
97%
WNW 19 mph

Thunderstorms in the morning will give way to cloudy skies late. Morning high of 62F with temps falling to near 45. Winds WNW at 15 to 25 mph. Chance of rain 100%.

  • Humidity
    Humidity78%
  • UV index
    UV Index2 of 11
  • Sunrise
    Sunrise7:19 am
  • Sunset
    Sunset7:05 pm

Night

30°
Partly Cloudy Night
Mixed precipitation
5%
NW 15 mph

Partly cloudy skies. Low around 30F. Winds NW at 10 to 20 mph.

  • Humidity
    Humidity69%
  • 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
57°/45°
Rain drop 6%
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Day

57°
Mostly Clear Day
Rain drop
6%
WSW 12 mph

Plentiful sunshine. High 57F. Winds WSW at 10 to 15 mph.

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

Night

45°
Partly Cloudy Night
SSW 19 mph

A few clouds from time to time. Low near 45F. Winds SSW at 15 to 25 mph. Higher wind gusts possible.

  • Humidity
    Humidity42%
  • 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 14 mph

Considerable clouds early. Some decrease in clouds later in the day. High 61F. Winds WNW at 10 to 20 mph.

  • Humidity
    Humidity36%
  • UV index
    UV Index4 of 11
  • Sunrise
    Sunrise7:16 am
  • Sunset
    Sunset7:07 pm

Night

35°
Partly Cloudy Night
Mixed precipitation
1%
NE 6 mph

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

  • Humidity
    Humidity50%
  • 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
64°/53°
Rain drop 0%
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Day

64°
Partly Cloudy Day
ESE 12 mph

Intervals of clouds and sunshine. High 64F. Winds ESE at 10 to 15 mph.

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

Night

53°
Cloudy
Rain drop
19%
SSE 10 mph

Overcast. Low 53F. Winds SSE at 10 to 15 mph.

  • Humidity
    Humidity59%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise5:00 am
  • Moonset
    Moonset2:35 pm
  • Moon Phase - Day 25 Waning Crescent

Sun 15

Rain Rain
58°/18°
Rain drop 85%
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Day

58°
Rain
Rain drop
85%
WSW 19 mph

Rain showers in the morning will evolve into a more steady rain in the afternoon. High 58F. Winds WSW at 15 to 25 mph. Chance of rain 90%. Rainfall near a quarter of an inch.

  • Humidity
    Humidity70%
  • UV index
    UV Index2 of 11
  • Sunrise
    Sunrise7:13 am
  • Sunset
    Sunset7:09 pm

Night

18°
Mostly Cloudy Night
Snowflake
24%
NW 19 mph

Considerable cloudiness. Low 18F. Winds NW at 15 to 25 mph.

  • 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 Partly Cloudy
33°/16°
Rain drop 5%
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Day

33°
Partly Cloudy Day
Mixed precipitation
5%
NW 16 mph

Partly cloudy skies. Cold. High 33F. Winds NW at 10 to 20 mph.

  • Humidity
    Humidity47%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:12 am
  • Sunset
    Sunset7:10 pm

Night

16°
Partly Cloudy Night
Snowflake
1%
NNW 10 mph

Partly cloudy skies. Low 16F. Winds NNW at 10 to 15 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
40°/30°
Rain drop 2%
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Day

40°
Partly Cloudy Day
Rain drop
2%
S 7 mph

Partly cloudy skies. Cool. High around 40F. Winds S at 5 to 10 mph.

  • Humidity
    Humidity48%
  • UV index
    UV Index4 of 11
  • Sunrise
    Sunrise7:10 am
  • Sunset
    Sunset7:11 pm

Night

30°
Partly Cloudy Night
Mixed precipitation
14%
SSE 8 mph

Partly cloudy early with increasing clouds overnight. Low around 30F. Winds SSE at 5 to 10 mph.

  • Humidity
    Humidity62%
  • 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
58°/35°
Rain drop 16%
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Day

58°
Partly Cloudy Day
Rain drop
16%
S 10 mph

Partly to mostly cloudy. High 58F. Winds S at 10 to 15 mph.

  • Humidity
    Humidity58%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:09 am
  • Sunset
    Sunset7:12 pm

Night

35°
Partly Cloudy Night
Mixed precipitation
8%
S 7 mph

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

  • Humidity
    Humidity69%
  • 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
70°/47°
Rain drop 8%
Add

Day

70°
Partly Cloudy Day
Rain drop
8%
SSW 9 mph

Partly cloudy. High around 70F. Winds SSW at 5 to 10 mph.

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

Night

47°
Partly Cloudy Night
Rain drop
24%
SSW 8 mph

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

  • Humidity
    Humidity66%
  • 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
74°/48°
Rain drop 13%
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Day

74°
Partly Cloudy Day
Rain drop
13%
WSW 10 mph

Intervals of clouds and sunshine. High 74F. Winds WSW at 5 to 10 mph.

  • Humidity
    Humidity54%
  • UV index
    UV Index4 of 11
  • Sunrise
    Sunrise7:06 am
  • Sunset
    Sunset7:14 pm

Night

48°
Partly Cloudy Night
Rain drop
22%
WNW 6 mph

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

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

Sat 21

Partly Cloudy Day Partly Cloudy
74°/49°
Rain drop 18%
Add

Day

74°
Partly Cloudy Day
Rain drop
18%
SW 10 mph

Intervals of clouds and sunshine. High 74F. Winds SW at 5 to 10 mph.

  • Humidity
    Humidity56%
  • UV index
    UV Index5 of 11
  • Sunrise
    Sunrise7:04 am
  • Sunset
    Sunset7:15 pm

Night

49°
Partly Cloudy Night
Rain drop
15%
SE 7 mph

A few clouds from time to time. Low 49F. Winds SE at 5 to 10 mph.

  • Humidity
    Humidity63%
  • 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°/49°
Rain drop 4%
Add

Day

74°
Partly Cloudy Day
Rain drop
4%
S 11 mph

Sunshine and clouds mixed. High 74F. Winds S at 10 to 15 mph.

  • Humidity
    Humidity53%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise7:02 am
  • Sunset
    Sunset7:16 pm

Night

49°
Scattered Showers Night
Rain drop
36%
SSE 8 mph

Partly cloudy skies early followed by increasing clouds with showers developing later at night. Low 49F. Winds SSE at 5 to 10 mph. Chance of rain 40%.

  • Humidity
    Humidity61%
  • 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
71°/50°
Rain drop 21%
Add

Day

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

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

  • Humidity
    Humidity56%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise7:01 am
  • Sunset
    Sunset7:17 pm

Night

50°
Partly Cloudy Night
Rain drop
23%
SE 8 mph

A few clouds. Low around 50F. Winds SE at 5 to 10 mph.

  • Humidity
    Humidity65%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise9:29 am
  • Moonset
    Moonset12:04 am
  • Moon Phase - Day 5 Waxing Crescent

Tue 24

Scattered Showers Day PM Showers
68°/47°
Rain drop 31%
Add

Day

68°
Scattered Showers Day
Rain drop
31%
SSE 12 mph

A mix of clouds and sun in the morning giving way to a few showers during the afternoon. High 68F. Winds SSE at 10 to 15 mph. Chance of rain 30%.

  • Humidity
    Humidity62%
  • UV index
    UV Index6 of 11
  • Sunrise
    Sunrise6:59 am
  • Sunset
    Sunset7:18 pm

Night

47°
Showers
Rain drop
40%
SW 8 mph

Showers early becoming less numerous late. Low 47F. Winds SW at 5 to 10 mph. Chance of rain 40%.

  • Humidity
    Humidity69%
  • UV index
    UV Index0 of 11
  • Moonrise
    Moonrise10:22 am
  • Moonset
    Moonset1:18 am
  • Moon Phase - Day 6 Waxing Crescent
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