St. Charles, MO Weather Forecast

Today's Weather

Mon, May 18

Mostly cloudy, showers and gusty t-storms, breezy and not as warm; humid in the p.m.; thunderstorms can bring flash flooding and localized damaging wind gusts Hi: 80°

Tonight: Breezy this evening; otherwise, cloudy, warm and humid with a strong thunderstorm late; thunderstorms can bring hail and damaging winds Lo: 70°

Current Weather

4:00 PM

MINUTECAST®

Heavy rain and a thunderstorm for at least 60 min

Now

5:00 PM

St. Charles Weather Radar

Static Radar Temporarily Unavailable

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Clouds

Temperature

Hourly Weather

10-Day Weather Forecast

Today

5/18

80° 70°

Heavy t-storms; not as warm

Night: A strong thunderstorm late

100%

Tue

5/19

80° 57°

A shower and thunderstorm

Overcast and cooler

88%

Wed

5/20

70° 51°

Partly sunny and not as warm

Mostly cloudy

25%

Thu

5/21

73° 59°

Times of clouds and sun

A shower and t-storm late

25%

Fri

5/22

70° 63°

Cloudy, a shower and t-storm

Cloudy

88%

Sat

5/23

76° 59°

Chance for a thunderstorm

Partly cloudy

30%

Sun

5/24

77° 60°

Chance for a thunderstorm

Becoming cloudy

30%

Mon

5/25

80° 63°

Intervals of clouds and sun

Cloudy with late-night rain

18%

Tue

5/26

81° 62°

Rain and a thunderstorm

Occasional rain and a t-storm

80%

Wed

5/27

82° 65°

An afternoon t-storm or two

Humid with rain at times

63%

Sun & Moon

14 hrs 23 mins

Rise 5:47 AM

Set 8:10 PM

Waxing Crescent

Rise 6:58 AM

Set 11:01 PM

Air Quality

Air Quality Fair

The air quality is generally acceptable for most individuals. However, sensitive groups may experience minor to moderate symptoms from long-term exposure.