PORTAGE DES SIOUX, MO 63373 Weather Forecast & Current Conditions

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ST. CHARLES, MO
Current Weather

1:54 AM CDT MAR 21, 2026
Clear
54°F
Feels Like: 54°F
Dewpoint: 46°F
Rel. Hum.: 74%
Visibility: 10 miles
Wind: N at 3 mph
Pressure: 29.90 inches
Last 72 hours

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PORTAGE DES SIOUX, MO 63373
Weather Forecast

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Snow Depth pages
REST OF TONIGHT
Mostly clear. Lows in the lower 50s. Northeast winds around 5 mph.
SATURDAY
Sunny. Highs in the upper 80s. Southeast winds around 5 mph, becoming south around 5 mph in the afternoon.
SATURDAY NIGHT
Mostly clear. Not as cool with lows in the lower 60s. South winds 5 to 10 mph.
SUNDAY
Sunny in the morning, then becoming partly sunny. Highs in the upper 80s. Southwest winds 10 to 15 mph, becoming west 15 to 20 mph with gusts up to 30 mph in the afternoon.
SUNDAY NIGHT
Mostly cloudy with a slight chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Breezy and much cooler with lows in the upper 30s. North winds 15 to 25 mph, diminishing to 10 to 15 mph after midnight. Chance of rain 20 percent.
MONDAY
Sunny. Much cooler with highs in the upper 50s.
MONDAY NIGHT
Mostly clear in the evening, then becoming mostly cloudy. Lows in the lower 40s.
TUESDAY
Mostly cloudy in the morning, then becoming mostly sunny. Highs in the lower 60s.
TUESDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. A 20 percent chance of rain. Lows in the mid 40s.
WEDNESDAY
Mostly cloudy with a slight chance of rain and thunderstorms in the morning, then partly sunny in the afternoon. Not as cool with highs in the lower 70s. Chance of rain 20 percent.
WEDNESDAY NIGHT
Mostly cloudy in the evening, then becoming partly cloudy. A 20 percent chance of rain. Not as cool with lows in the mid 50s.
THURSDAY
Sunny with a 20 percent chance of rain. Highs in the lower 80s.
THURSDAY NIGHT
Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of thunderstorms in the evening. A chance of rain. Cooler with lows in the mid 40s. Chance of rain 40 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  6:00 PM CST  3/20/2026
Saturday
21 MAR 2026
PORTAGE DES SIOUX, MO 63373 weather forecast Day 1, 0 hours 12 AM 59° 60° Partly Cloudy 3%

0% Thunder
( 6% severe)
ENE   2 62% 46°
Low 50° PORTAGE DES SIOUX, MO 63373 weather forecast Day 1, 3 hours 3 AM 54° 54° Clear ENE   1 71% 45°
High 85° PORTAGE DES SIOUX, MO 63373 weather forecast Day 1, 6 hours 6 AM 51° 51° Clear 2%

0% Thunder
( 4% severe)
E   2 80% 45°

Clear



PORTAGE DES SIOUX, MO 63373 weather forecast Day 1, 9 hours 9 AM 64° 66° Clear SE   2 60% 50°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 1, 12 hours 12 PM 79° 79° Clear 1%

0% Thunder
( 3% severe)
S   5 38% 51°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 1, 15 hours 3 PM 85° 83° Clear SW   6 31% 51°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 1, 18 hours 6 PM 77° 78° Clear 1%

0% Thunder
( 3% severe)
S   6 42% 52°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 1, 21 hours 9 PM 68° 68° Clear SSE   7 57% 52°
Sunday
22 MAR 2026
PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 0 hours 12 AM 65° 65° Clear 0%

0% Thunder
( 2% severe)
SSW   8 63% 52°
Low 60° PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 3 hours 3 AM 62° 61° Partly Cloudy SSW   9 70% 52°
High 84° PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 6 hours 6 AM 62° 61° Partly Cloudy 1%

0% Thunder
( 5% severe)
SSW   9 70% 52°

Mostly Cloudy



PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 9 hours 9 AM 74° 74° Partly Cloudy SW   10 53% 56°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 12 hours 12 PM 82° 81° Mostly Cloudy 9%

0% Thunder
( 15% severe)
W   12 38% 54°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 15 hours 3 PM 77° 78° Mostly Cloudy NNW   17 39% 50°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 18 hours 6 PM 64° 62° Mostly Cloudy 11%
RAIN
<.01 in
0% Thunder
( 2% severe)
N   20 48% 44°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 21 hours 9 PM 54° 49° Partly Cloudy N   17 55% 38°

ST. CHARLES, MO extended weather forecast

Monday
23 MAR 2026
Tuesday
24 MAR 2026
Wednesday
25 MAR 2026
Thursday
26 MAR 2026
Friday
27 MAR 2026
Low 42° Low 39° Low 43° Low 55° Low 48°
High 57° High 63° High 74° High 80° High 56°
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
Clear
14% Rain
Mostly Cloudy
11% Rain
Partly Cloudy
20% Rain
Mostly Cloudy
33% Rain
Overcast
66% Rain
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