PORTAGE DES SIOUX, MO 63373 Weather Forecast & Current Conditions

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ST. CHARLES, MO
Current Weather

9:54 PM CDT MAR 20, 2026
Clear
70°F
Feels Like: 70°F
Dewpoint: 45°F
Rel. Hum.: 41%
Visibility: 10 miles
Wind: NE at 8 mph
Pressure: 29.87 inches
Last 72 hours

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PORTAGE DES SIOUX, MO 63373
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
OVERNIGHT
Mostly cloudy late this evening, then clearing. Lows in the lower 50s. Northeast winds around 5 mph.
SATURDAY
Sunny. Highs in the mid 80s. East winds around 5 mph, becoming south 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 mid 80s. Southwest winds 5 to 10 mph, increasing to west 15 to 20 mph in the afternoon.
SUNDAY NIGHT
Mostly cloudy in the evening, then clearing. Much cooler with lows around 40. North winds 15 to 20 mph with gusts up to 30 mph.
MONDAY
Sunny. Much cooler with highs in the upper 50s.
MONDAY NIGHT
Mostly clear in the evening, then becoming mostly cloudy. Lows around 40.
TUESDAY
Mostly cloudy in the morning, then becoming mostly sunny. Highs around 60.
TUESDAY NIGHT
Partly cloudy in the evening, then mostly cloudy with a slight chance of rain and thunderstorms after midnight. Lows in the lower 40s. Chance of rain 20 percent.
WEDNESDAY
Mostly cloudy in the morning, then becoming partly sunny. Highs in the upper 60s.
WEDNESDAY NIGHT
Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 50s.
THURSDAY
Sunny. A slight chance of rain in the afternoon. Not as cool with highs in the upper 70s. Chance of rain 20 percent.
THURSDAY NIGHT AND FRIDAY
Mostly cloudy. A 50 percent chance of rain. Lows in the lower 40s. Highs in the lower 50s.

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 AM CST  3/20/2026
Friday
20 MAR 2026
PORTAGE DES SIOUX, MO 63373 weather forecast Day 1, 12 hours 12 PM 81° 80° Clear 1%

0% Thunder
( 2% severe)
W   13 32% 48°
High 86° PORTAGE DES SIOUX, MO 63373 weather forecast Day 1, 15 hours 3 PM 85° 82° Clear W   13 26% 46°
Partly Cloudy



PORTAGE DES SIOUX, MO 63373 weather forecast Day 1, 18 hours 6 PM 76° 78° Partly Cloudy 3%

0% Thunder
( 2% severe)
NW   7 37% 48°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 1, 21 hours 9 PM 65° 65° Partly Cloudy NNE   5 52% 47°
Saturday
21 MAR 2026
PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 0 hours 12 AM 59° 60° Partly Cloudy 4%

0% Thunder
( 4% severe)
NE   3 64% 47°
Low 50° PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 3 hours 3 AM 54° 54° Partly Cloudy ENE   1 77% 47°
High 83° PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 6 hours 6 AM 51° 51° Clear 4%

0% Thunder
( 3% severe)
E   2 83% 46°

Clear



PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 9 hours 9 AM 63° 64° Clear SE   3 62% 50°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 12 hours 12 PM 76° 78° Clear 1%

0% Thunder
( 1% severe)
SSW   6 42% 51°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 15 hours 3 PM 82° 81° Clear WSW   7 33% 50°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 18 hours 6 PM 76° 78° Clear 0%

0% Thunder
( 2% severe)
SSW   6 42% 51°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 2, 21 hours 9 PM 67° 67° Clear S   7 56% 51°
Sunday
22 MAR 2026
PORTAGE DES SIOUX, MO 63373 weather forecast Day 3, 0 hours 12 AM 65° 65° Clear 0%

0% Thunder
( 3% severe)
SSW   9 60% 51°
Low 59° PORTAGE DES SIOUX, MO 63373 weather forecast Day 3, 3 hours 3 AM 62° 61° Clear SSW   10 67% 51°
High 85° PORTAGE DES SIOUX, MO 63373 weather forecast Day 3, 6 hours 6 AM 61° 60° Partly Cloudy 0%

0% Thunder
( 5% severe)
SSW   9 70% 51°

Partly Cloudy



PORTAGE DES SIOUX, MO 63373 weather forecast Day 3, 9 hours 9 AM 73° 73° Partly Cloudy SSW   12 53% 55°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 3, 15 hours 12 PM 82° 81° Partly Cloudy 2%

0% Thunder
( 7% severe)
W   13 38% 54°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 3, 18 hours 3 PM 80° 80° Mostly Cloudy NNW   17 36% 51°
PORTAGE DES SIOUX, MO 63373 weather forecast Day 3, 21 hours 6 PM 69° 69° Mostly Cloudy     N   20 44% 46°

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 45° Low 39° Low 44° Low 56° Low 45°
High 57° High 54° High 73° High 80° High 58°
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
Partly Cloudy
18% Rain
Mostly Cloudy
44% Rain
Overcast
32% Rain
Partly Cloudy
19% Rain
Partly Cloudy
30% Rain
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