PORTAGE DES SIOUX, MO 63373 Weather Forecast & Current Conditions

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ST. CHARLES, MO
Current Weather

5:54 PM CDT AUG 31, 2026
Clear
97°F
Feels Like: 100°F
Dewpoint: 66°F
Rel. Hum.: 36%
Visibility: 10 miles
Wind: SSW at 12 mph
Pressure: 29.95 inches
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PORTAGE DES SIOUX, MO 63373
Weather Forecast

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TONIGHT
Clear. Lows in the mid 70s. South winds 5 to 10 mph. Heat index values up to 101 early this evening.
TUESDAY
Sunny, hot with highs in the upper 90s. Southwest winds around 5 mph.
TUESDAY NIGHT
Mostly clear. Lows in the upper 70s. South winds around 5 mph. Heat index values up to 101 early in the evening.
WEDNESDAY
Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph.
WEDNESDAY NIGHT
Mostly clear. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 102 early in the evening.
THURSDAY THROUGH FRIDAY NIGHT
Mostly clear. Hot. Highs in the upper 90s. Lows in the upper 70s. Heat index values up to 105.
SATURDAY
Mostly sunny with a slight chance of showers and thunderstorms. Hot with highs in the mid 90s. Chance of rain 20 percent. Heat index values up to 105.
SATURDAY NIGHT AND SUNDAY
Partly cloudy. Lows in the lower 70s. Highs in the lower 90s. Heat index values up to 100.
SUNDAY NIGHT
Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 60s.
LABOR DAY
Mostly sunny. Highs in the lower 90s.

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  8/31/2026
Monday
31 AUG 2026
PORTAGE DES SIOUX, MO 63373 weather forecast Day 1, 12 hours 1 PM 95° 99° Clear 0%

0% Thunder
( 4% severe)
SSW   10 40% 67°
High 99° PORTAGE DES SIOUX, MO 63373 weather forecast Day 1, 15 hours 4 PM 98° 101° Clear SSW   9 34% 65°
Clear



PORTAGE DES SIOUX, MO 63373 weather forecast Day 1, 18 hours 7 PM 94° 99° Clear 0%

0% Thunder
( 5% severe)
S   7 43% 68°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 1, 21 hours 10 PM 84° 87° Clear S   8 57% 67°
Tuesday
1 SEP 2026
PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 0 hours 1 AM 81° 83° Clear 0%

0% Thunder
( 2% severe)
S   7 60% 66°
Low 75° PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 3 hours 4 AM 78° 80° Clear SW   6 64% 65°
High 99° PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 6 hours 7 AM 77° 79° Clear 1%

0% Thunder
( 2% severe)
SSW   6 67% 65°

Clear



PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 9 hours 10 AM 89° 93° Clear WSW   8 50% 68°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 12 hours 1 PM 97° 102° Clear 1%

0% Thunder
( 5% severe)
WSW   7 39% 68°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 15 hours 4 PM 99° 102° Clear SSW   7 33% 65°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 18 hours 7 PM 95° 100° Clear 0%

0% Thunder
( 6% severe)
S   5 42% 68°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 21 hours 10 PM 86° 89° Clear S   7 55% 68°
Wednesday
2 SEP 2026
PORTAGE DES SIOUX, MO 63373 weather forecast Day 3, 0 hours 1 AM 83° 86° Partly Cloudy 0%

0% Thunder
( 5% severe)
S   8 59% 67°
Low 77° PORTAGE DES SIOUX, MO 63373 weather forecast Day 3, 3 hours 4 AM 81° 84° Partly Cloudy SSW   7 65% 68°
High 99° PORTAGE DES SIOUX, MO 63373 weather forecast Day 3, 6 hours 7 AM 80° 83° Partly Cloudy 0%

0% Thunder
( 3% severe)
SSW   6 67% 68°

Clear



PORTAGE DES SIOUX, MO 63373 weather forecast Day 3, 9 hours 10 AM 91° 96° Clear SW   10 49% 69°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 3, 15 hours 1 PM 97° 103° Clear 0%

0% Thunder
( 11% severe)
SW   10 40% 69°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 3, 18 hours 4 PM 99° 104° Clear SW   9 36% 67°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 3, 21 hours 7 PM 95° 100° Clear     SSW   5 42% 68°

ST. CHARLES, MO extended weather forecast

Thursday
3 SEP 2026
Friday
4 SEP 2026
Saturday
5 SEP 2026
Sunday
6 SEP 2026
Monday
7 SEP 2026
Low 69° Low 71° Low 67° Low 66° Low 64°
High 103° High 101° High 99° High 92° High 90°
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
Clear
12% Rain
Clear
15% Rain
Partly Cloudy
30% Rain
Partly Cloudy
28% Rain
Clear
11% Rain
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