PORTAGE DES SIOUX, MO 63373 Weather Forecast & Current Conditions

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63373 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
ST. CHARLES, MO Current Weather
3:54 AM CDT MAY 18, 2026
Clear 73°F
Feels Like:	73°F
Dewpoint:	66°F
Rel. Hum.:	79%
Visibility:	10 miles
Wind:	SSE at 10 mph
Pressure:	29.84 inches
Last 72 hours
Local Area Snow Depth
Missouri Current Weather
Missouri MOS Forecast Weather

Weather Map

(Automated weather data from NWS/FAA)

63373 WEATHER FORECAST
10-Day model forecast maps 2025 Hurricanes	PORTAGE DES SIOUX, MO 63373 Weather Forecast	Snowfall Forecast pages Snow Depth pages

TODAY
Showers with a chance of thunderstorms this morning, then showers with thunderstorms likely this afternoon. Highs around 80. South winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 90 percent.

TONIGHT
Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers. A chance of thunderstorms, mainly in the evening. Lows around 70. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50 percent.

TUESDAY
Showers likely with a chance of thunderstorms in the morning, then showers with thunderstorms likely in the afternoon. Highs in the mid 80s. Temperature falling to around 80 in the afternoon. Southwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain near 100 percent.

TUESDAY NIGHT
Showers with a slight chance of thunderstorms in the evening, then showers likely after midnight. Cooler with lows in the upper 50s. Northwest winds 5 to 10 mph. Chance of rain near 100 percent.

WEDNESDAY
Mostly cloudy. Much cooler with highs in the upper 60s. North winds 5 to 10 mph.

WEDNESDAY NIGHT AND THURSDAY
Mostly cloudy. Lows in the lower 50s. Highs in the lower 70s.

THURSDAY NIGHT
Mostly cloudy. A chance of showers after midnight. Lows in the upper 50s. Chance of rain 40 percent.

FRIDAY
Mostly cloudy with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 50 percent.

FRIDAY NIGHT
A slight chance of thunderstorms in the evening. Mostly cloudy with a chance of showers. Lows around 60. Chance of rain 50 percent.

SATURDAY
Partly sunny with a slight chance of thunderstorms. A chance of showers, mainly in the morning. Highs in the lower 80s. Chance of rain 40 percent.

SATURDAY NIGHT AND SUNDAY
Partly cloudy. Lows in the lower 60s. Highs in the mid 80s.

63373 WEATHER SATELLITE LOOPS

Visible Weather Satellite
PORTAGE DES SIOUX, MO 63373

Infrared Weather Satellite
PORTAGE DES SIOUX, MO 63373

63373 WEATHER RADAR LOOP

NEXRAD Weather Radar
PORTAGE DES SIOUX, MO 63373

MOS COMPUTER WEATHER FORECAST

ST. CHARLES, MO 3 hourly weather forecast

weather forecast created 7:00 PM CDT 5/17/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Monday
18 MAY 2026

1 AM

78°

80°

Partly Cloudy

10%
RAIN
<.01 in

0% Thunder
( 11% severe)

S 14

58%

62°

Low 73°

4 AM

74°

74°

Partly Cloudy

S 13

71%

64°

High 86°

7 AM

74°

74°

Mostly Cloudy

68%
RAIN
***

0% Thunder
( 40% severe)

S 14

74%

65°

Mostly Cloudy

Rain Likely

10 AM

80°

82°

Mostly Cloudy

SSW 16

65%

67°

1 PM

81°

84°

Mostly Cloudy

64%
RAIN
***

0% Thunder
( 55% severe)

S 16

63%

67°

4 PM

82°

85°

Mostly Cloudy

SSW 17

63%

68°

7 PM

81°

83°

Mostly Cloudy

21%
RAIN
.5–1 in

0% Thunder
( 27% severe)

SSE 16

60%

66°

10 PM

76°

78°

Mostly Cloudy

S 14

71%

66°

Tuesday
19 MAY 2026

1 AM

75°

75°

Partly Cloudy

33%
RAIN
<.01 in

0% Thunder
( 18% severe)

SSE 14

71%

65°

Low 66°

4 AM

72°

72°

Mostly Cloudy

S 14

76%

64°

High 84°

7 AM

72°

72°

Mostly Cloudy

66%
RAIN
.5–1 in

0% Thunder
( 30% severe)

S 13

79%

65°

Mostly Cloudy

Rain Likely

10 AM

79°

81°

Mostly Cloudy

SSW 16

64%

66°

1 PM

81°

84°

Mostly Cloudy

69%
RAIN
***

0% Thunder
( 58% severe)

SW 15

65%

68°

4 PM

78°

80°

Mostly Cloudy

WNW 13

69%

67°

7 PM

75°

75°

Mostly Cloudy

49%
RAIN
.01–.1 in

0% Thunder
( 30% severe)

NW 12

64%

62°

10 PM

68°

68°

Overcast

NNW 9

78%

61°


ST. CHARLES, MO extended weather forecast
Wednesday 20 MAY 2026	Thursday 21 MAY 2026	Friday 22 MAY 2026	Saturday 23 MAY 2026	Sunday 24 MAY 2026
Low 57°	Low 54°	Low 59°	Low 63°	Low 60°
High 69°	High 69°	High 71°	High 82°	High 81°

Overcast 54% Rain	Overcast 40% Rain	Overcast 71% Rain	Overcast 63% Rain	Overcast 56% Rain

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