PORTAGE DES SIOUX, MO 63373 Weather Forecast & Current Conditions

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ST. CHARLES, MO
Current Weather

7:54 AM CDT JUN 15, 2026
Clear
64°F
Feels Like: 65°F
Dewpoint: 57°F
Rel. Hum.: 78%
Visibility: 10 miles
Wind: SW at 3 mph
Pressure: 30.03 inches
Last 72 hours

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PORTAGE DES SIOUX, MO 63373
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TODAY
Sunny. Highs in the upper 70s. Northwest winds around 5 mph.
TONIGHT
Mostly clear. Lows in the upper 50s. Southwest winds around 5 mph.
TUESDAY
Partly sunny with a chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs around 80. Southwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50 percent.
TUESDAY NIGHT
Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the upper 50s. West winds 5 to 10 mph, becoming south after midnight. Chance of rain 20 percent.
WEDNESDAY
Mostly sunny. A slight chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. Breezy with highs in the upper 80s. South winds 10 to 15 mph with gusts up to 25 mph, increasing to 15 to 25 mph with gusts up to 40 mph in the afternoon. Chance of rain 40 percent.
WEDNESDAY NIGHT
Showers with a chance of thunderstorms in the evening, then showers likely after midnight. Breezy and not as cool with lows in the upper 60s. Chance of rain near 100 percent.
THURSDAY
Partly sunny with a chance of showers. A slight chance of thunderstorms in the afternoon. Cooler with highs in the upper 70s. Chance of rain 50 percent.
THURSDAY NIGHT
Partly cloudy with a slight chance of showers in the evening, then mostly clear after midnight. Cooler with lows in the upper 50s. Chance of rain 20 percent.
JUNETEENTH AND FRIDAY NIGHT
Mostly clear. Highs in the lower 80s. Lows in the lower 60s.
SATURDAY
Mostly sunny. Highs in the mid 80s.
SATURDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the mid 60s. Chance of rain 40 percent.
SUNDAY
Partly sunny in the morning, then becoming mostly cloudy. A chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 50 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 PM CDT  6/14/2026
Monday
15 JUN 2026
PORTAGE DES SIOUX, MO 63373 weather forecast Day 1, 0 hours 1 AM 62° 63° Partly Cloudy 0%

0% Thunder
( 1% severe)
NW   3 78% 55°
Low 58° PORTAGE DES SIOUX, MO 63373 weather forecast Day 1, 3 hours 4 AM 59° 60° Partly Cloudy NW   2 80% 53°
High 78° PORTAGE DES SIOUX, MO 63373 weather forecast Day 1, 6 hours 7 AM 60° 61° Clear 0%

0% Thunder
( 1% severe)
  CALM 81% 54°

Partly Cloudy



PORTAGE DES SIOUX, MO 63373 weather forecast Day 1, 9 hours 10 AM 70° 70° Clear   CALM 49% 50°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 1, 12 hours 1 PM 75° 75° Partly Cloudy 0%

0% Thunder
( 3% severe)
NW   6 38% 48°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 1, 15 hours 4 PM 77° 78° Partly Cloudy W   6 35% 47°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 1, 18 hours 7 PM 77° 78° Partly Cloudy 0%

0% Thunder
( 2% severe)
W   5 39% 50°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 1, 21 hours 10 PM 67° 67° Clear SW   3 63% 54°
Tuesday
16 JUN 2026
PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 0 hours 1 AM 64° 65° Clear 5%

0% Thunder
( 4% severe)
SSW   5 70% 54°
Low 58° PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 3 hours 4 AM 61° 61° Clear S   6 75% 53°
High 81° PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 6 hours 7 AM 63° 63° Partly Cloudy 18%
RAIN
<.01 in
0% Thunder
( 17% severe)
SSW   8 72% 54°

Mostly Cloudy

Rain Likely

PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 9 hours 10 AM 73° 73° Mostly Cloudy SW   12 55% 56°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 12 hours 1 PM 77° 79° Mostly Cloudy 51%
RAIN
.5–1 in
0% Thunder
( 42% severe)
SW   16 50% 57°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 15 hours 4 PM 79° 80° Partly Cloudy WSW   17 50% 59°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 18 hours 7 PM 77° 79° Partly Cloudy 9%

0% Thunder
( 12% severe)
W   13 56% 60°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 21 hours 10 PM 68° 68° Clear W   6 78% 61°

ST. CHARLES, MO extended weather forecast

Wednesday
17 JUN 2026
Thursday
18 JUN 2026
Friday
19 JUN 2026
Saturday
20 JUN 2026
Sunday
21 JUN 2026
Low 66° Low 70° Low 59° Low 60° Low 66°
High 94° High 79° High 80° High 82° High 80°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 3 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
Partly Cloudy
35% Rain
Partly Cloudy
75% Rain
Partly Cloudy
29% Rain
Partly Cloudy
21% Rain
Overcast
54% Rain
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