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Portage Des Sioux, MO 63373 Weather
Today: Slight Chance Rain Showers, high 81°F, low 57°F. Hourly and 10-day forecast from the National Weather Service. Times are local (CDT).
Portage Des Sioux, MO 63373 current weather
79°F
Slight Chance Rain Showers
Forecast for this hour. No recent report from a nearby station.
H 81° / L 57°
- Wildfire smoke overhead: light
No rain expected in the next 12 hours
No recent station report. NWS hourly forecast updated 10/29/2026, 12:56 PM PT
Hourly forecast
NWS, updated 10/29/2026, 12:56 PM PT
10-day forecast
Tap a day for details
Today10/2921% chance of precipitationLow 57°High 81°
This Afternoon: A slight chance of rain showers. Mostly sunny, with a high near 81. West wind around 5 mph. Chance of precipitation is 20%.
Tonight: A slight chance of rain showers. Mostly cloudy, with a low around 57. Northeast wind around 5 mph. Chance of precipitation is 20%.
Slight Chance Rain ShowersFri10/3019% chance of precipitationLow 57°High 77°
Friday: A slight chance of rain showers before 1pm. Mostly cloudy, with a high near 77. East wind 6 to 10 mph. Chance of precipitation is 20%.
Friday Night: Mostly cloudy, with a low around 57. East wind 3 to 7 mph.
Slight Chance Rain ShowersSat10/3148% chance of precipitationLow 54°High 73°
Saturday: A chance of rain showers after 7am. Cloudy, with a high near 73. East wind 3 to 8 mph.
Saturday Night: A chance of rain showers. Cloudy, with a low around 54. Chance of precipitation is 50%.
Chance Rain ShowersSun11/133% chance of precipitationLow 55°High 73°
Sunday: A chance of rain showers before noon. Mostly cloudy, with a high near 73. Chance of precipitation is 30%.
Sunday Night: A slight chance of rain showers after midnight. Mostly cloudy, with a low around 55. Chance of precipitation is 20%.
Chance Rain Showers then Mostly CloudyMon11/254% chance of precipitationLow 59°High 73°
Monday: A chance of rain showers. Mostly cloudy, with a high near 73. Chance of precipitation is 40%.
Monday Night: A chance of rain showers. Mostly cloudy, with a low around 59. Chance of precipitation is 50%.
Chance Rain ShowersTue11/370% chance of precipitationLow 56°High 75°
Tuesday: Showers and thunderstorms likely. Mostly cloudy, with a high near 75. Chance of precipitation is 70%.
Tuesday Night: Rain showers likely. Mostly cloudy, with a low around 56. Chance of precipitation is 60%.
Showers And Thunderstorms LikelyWed11/458% chance of precipitationLow 48°High 71°
Wednesday: Rain showers likely. Partly sunny, with a high near 71. Chance of precipitation is 60%.
Wednesday Night: A chance of rain showers. Mostly cloudy, with a low around 48. Chance of precipitation is 30%.
Rain Showers LikelyThu11/5Model blend30% chance of precipitationLow 49°High 67°
Thursday: Chance of rain. High near 67°. Low that night near 49°. About 0.02 in of precipitation.
Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.
Fri11/6Model blend19% chance of precipitationLow 47°High 65°
Friday: Partly cloudy, slight chance of rain. High near 65°. Low that night near 47°.
Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.
Sat11/7Model blendLow 45°High 65°
Saturday: Partly cloudy. High near 65°. Low that night near 45°.
Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.
Forecast for 38.931, -90.380 from the NWS LSX office, updated 10/29/2026, 12:56 PM PT · Official forecast on weather.gov
Days 8 to 10: NOAA National Blend of Models, station KSTL (St Louis/Lambert Intl, 12 mi), model run 10/29/2026, 3:00 PM CDT
From the National Weather Service; may be delayed. Not for life-safety decisions. In an emergency, call 911.
Next 6 hours
NWS hourly forecast
- Now79°Slight Chance Rain Showers15%5 mph
- 6 PM76°Slight Chance Rain Showers21%3 mph
- 7 PM71°Slight Chance Rain Showers21%3 mph
- 8 PM67°Slight Chance Rain Showers15%3 mph
- 9 PM65°Partly Cloudy9%5 mph
- 10 PM64°Partly Cloudy4%5 mph
Hourly details
Next 7 days: temperature chart, feels like, rain and snow amounts, sky cover, wind and gustsShowHide
Radar and satellite
National radarNEXRAD (up to 24 hours) and GOES
Frequently asked questions
- What is the high temperature today in Portage Des Sioux, MO 63373?
- The National Weather Service forecast for this afternoon calls for a high near 81°F. Slight Chance Rain Showers.
- Will it rain in Portage Des Sioux, MO 63373 in the next 24 hours?
- The NWS hourly forecast does not show any hour with a 50% or higher chance of precipitation in the next 24 hours.
- What is the 10-day forecast for Portage Des Sioux, MO 63373?
- The first 7 days come from the National Weather Service forecast. Days 8 to 10 (Nov 5 to Nov 7) come from the NOAA National Blend of Models, with highs of 65°F to 67°F and up to a 30% chance of precipitation. Model guidance this far out often changes.
- What time is sunrise and sunset in Portage Des Sioux, MO 63373 today?
- Sunrise is about 7:25 AM CDT and sunset is about 6:04 PM CDT (calculated for the center of the area, within a few minutes).
- What is the normal October weather in Portage Des Sioux, MO 63373?
- At St Charles CO AP, the 1991 to 2020 normal high in October is 69°F and the normal low is 46°F.
Nearby hazards
Missouri hazardsSevere storm and flash flood outlooks, expected rain, river flooding and wildfires near this area
- Severe storm outlook today:General thunderstormsOutlook map
- Excessive rainfall outlook (flash flood risk):Could not check the Weather Prediction Center outlook right now.
- River gauges within 40 miles at or above flood stage: None reported
- Active wildfires within 50 miles: None reported
UV and air quality forecast
EPA and AirNow
- UV index today (Portage Des Sioux)
- 4Moderate
- 110a
- 211a
- 312p
- 41p
- 32p
- 23p
- 14p
- AQI forecast today (St. Louis (Metro-east))
- ModeratePM2.5
- AQI forecast tomorrow (St. Louis (Metro-east))
- GoodPM2.5
Drought
By countySt. Charles County, week of 10/27/2026
91% of the county is abnormally dry. No drought.
Sun and moon
Local time, center of the area
- Sunrise
- 7:25 AM
- Sunset
- 6:04 PM
- Daylight
- 10 hr 39 min
- Moon
- Waning Gibbous 85% lit
- First light (civil dawn)
- 6:58 AM
- Last light (civil dusk)
- 6:31 PM
- Moonrise
- 8:36 PM
- Moonset
- 11:37 AM
Normal October weather
ClimateNormal October high 69°, low 46°, precipitation 2.66 in for the month. 1991 to 2020 normals at St Charles CO AP, 3 mi away.
Other places nearby
Data sources
- National Weather Service APINOAA · Official site
- National Blend of Models (NBM) text guidanceNOAA National Weather Service · Official site
- Convective Outlooks and Storm ReportsNOAA Storm Prediction Center · Official site
- Excessive Rainfall Outlook and Quantitative Precipitation ForecastsNOAA Weather Prediction Center · Official site
- National Water Prediction ServiceNOAA National Weather Service · Official site
- WFIGS Current Wildland Fire IncidentsNational Interagency Fire Center · Official site
- Hazard Mapping System Smoke AnalysisNOAA NESDIS Office of Satellite and Product Operations · Official site
- UV Index Forecast (Envirofacts)U.S. Environmental Protection Agency and NOAA · Official site
- AirNowU.S. Environmental Protection Agency · Official site
- NWS HeatRisk (experimental)NOAA National Weather Service · Official site
- U.S. Drought MonitorNational Drought Mitigation Center, USDA and NOAA · Official site
- BEACON 2.0 Beach Advisory and Closing On-line NotificationU.S. Environmental Protection Agency · Official site
- U.S. Climate Normals 1991-2020NOAA National Centers for Environmental Information · Official site
- Tides & Currents (CO-OPS API)NOAA Center for Operational Oceanographic Products and Services · Official site
- NEXRAD radar tilesIowa Environmental Mesonet, Iowa State University · Official site
- GOES-East and GOES-West GeoColor imageryNOAA NESDIS Center for Satellite Applications and Research · Official site
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About this data
Weather and emergencies: Weather, air quality and hazard information on this page is delayed and may be incomplete. It is not a substitute for official warnings. Always follow the National Weather Service, local emergency management and public safety officials. In an emergency, call 911. For evacuation orders, use your local official alert system.
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