PORTAGE DES SIOUX, MO 63373 Weather Forecast & Current Conditions

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ST. CHARLES, MO
Current Weather

8:54 PM CDT SEP 7, 2026
Clear
73°F
Feels Like: 73°F
Dewpoint: 57°F
Rel. Hum.: 57%
Visibility: 10 miles
Wind: E at 7 mph
Pressure: 30.06 inches
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PORTAGE DES SIOUX, MO 63373
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TONIGHT
Mostly clear. Lows in the mid 60s. East winds around 5 mph.
TUESDAY
Mostly sunny. Highs in the mid 90s. Southeast winds around 5 mph.
TUESDAY NIGHT
Mostly clear. Lows in the lower 70s. South winds 5 to 10 mph.
WEDNESDAY
Sunny. A slight chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. Hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Chance of rain 50 percent. Heat index values up to 108.
WEDNESDAY NIGHT
Showers likely with a chance of thunderstorms in the evening, then showers with a slight chance of thunderstorms after midnight. Humid with lows in the upper 60s. West winds around 5 mph. Chance of rain near 100 percent. Heat index values up to 103 early in the evening.
THURSDAY
Showers likely with a slight chance of thunderstorms in the morning, then partly sunny with a chance of showers and thunderstorms in the afternoon. Cooler with highs in the lower 80s. Chance of rain 70 percent.
THURSDAY NIGHT
Partly cloudy. Lows in the lower 60s.
FRIDAY
Mostly sunny. A slight chance of showers in the afternoon. Highs in the mid 80s. Chance of rain 20 percent.
FRIDAY NIGHT
Partly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Lows in the upper 60s. Chance of rain 40 percent.
SATURDAY
Mostly sunny. A chance of showers in the morning, then a slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 40 percent.
SATURDAY NIGHT AND SUNDAY
Mostly clear. A 20 percent chance of showers. Lows in the upper 60s. Highs in the upper 80s.
SUNDAY NIGHT
Mostly clear. Lows in the mid 60s.
MONDAY
Sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 20 percent.

Visible Weather Satellite
PORTAGE DES SIOUX, MO 63373
Infrared Weather Satellite
PORTAGE DES SIOUX, MO 63373
NEXRAD Weather Radar
PORTAGE DES SIOUX, MO 63373

ST. CHARLES, MO 3 hourly weather forecast

weather forecast created  7:00 AM CDT  9/ 7/2026
Monday
7 SEP 2026
PORTAGE DES SIOUX, MO 63373 weather forecast Day 1, 12 hours 1 PM 84° 83° Clear 1%

0% Thunder
( 1% severe)
E   8 40% 57°
High 88° PORTAGE DES SIOUX, MO 63373 weather forecast Day 1, 15 hours 4 PM 87° 86° Clear E   8 35% 56°
Clear



PORTAGE DES SIOUX, MO 63373 weather forecast Day 1, 18 hours 7 PM 81° 81° Clear 1%

0% Thunder
( 1% severe)
E   7 47% 59°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 1, 21 hours 10 PM 72° 72° Clear E   6 64% 59°
Tuesday
8 SEP 2026
PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 0 hours 1 AM 68° 68° Clear 1%

0% Thunder
( 2% severe)
E   6 73% 59°
Low 62° PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 3 hours 4 AM 66° 66° Partly Cloudy E   5 78% 59°
High 94° PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 6 hours 7 AM 64° 65° Partly Cloudy 1%

0% Thunder
( 1% severe)
E   3 81% 58°

Partly Cloudy



PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 9 hours 10 AM 79° 80° Partly Cloudy SSE   6 52% 60°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 12 hours 1 PM 90° 90° Partly Cloudy 1%

0% Thunder
( 2% severe)
S   8 37% 60°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 15 hours 4 PM 94° 93° Partly Cloudy SSE   8 31% 59°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 18 hours 7 PM 88° 88° Partly Cloudy 0%

0% Thunder
( 1% severe)
SE   7 42% 62°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 21 hours 10 PM 80° 81° Partly Cloudy SSE   7 56% 63°
Wednesday
9 SEP 2026
PORTAGE DES SIOUX, MO 63373 weather forecast Day 3, 0 hours 1 AM 78° 80° Clear 0%

0% Thunder
( 5% severe)
S   8 62% 64°
Low 71° PORTAGE DES SIOUX, MO 63373 weather forecast Day 3, 3 hours 4 AM 76° 78° Clear S   8 66% 64°
High 95° PORTAGE DES SIOUX, MO 63373 weather forecast Day 3, 6 hours 7 AM 75° 75° Clear 4%

0% Thunder
( 14% severe)
S   8 69% 64°

Partly Cloudy

Chance of Rain

PORTAGE DES SIOUX, MO 63373 weather forecast Day 3, 9 hours 10 AM 86° 88° Partly Cloudy SW   10 51% 66°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 3, 15 hours 1 PM 93° 97° Partly Cloudy 41%
RAIN
.1–.25 in
0% Thunder
( 33% severe)
W   9 44% 68°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 3, 18 hours 4 PM 93° 98° Partly Cloudy W   9 46% 69°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 3, 21 hours 7 PM 86° 91° Mostly Cloudy     WNW   7 61% 71°

ST. CHARLES, MO extended weather forecast

Thursday
10 SEP 2026
Friday
11 SEP 2026
Saturday
12 SEP 2026
Sunday
13 SEP 2026
Monday
14 SEP 2026
Low 68° Low 66° Low 66° Low 69° Low 63°
High 88° High 91° High 93° High 93° High 89°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 4 PORTAGE DES SIOUX, MO 63373 weather forecast Day 5 PORTAGE DES SIOUX, MO 63373 weather forecast Day 6 PORTAGE DES SIOUX, MO 63373 weather forecast Day 7 <!--SEARCHED_TOWN_NAME--> weather forecast Day 8
Mostly Cloudy
49% Rain
Clear
9% Rain
Partly Cloudy
26% Rain
Partly Cloudy
23% Rain
Partly Cloudy
30% Rain
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