Portage Des Sioux, Missouri Weather
Portage Des Sioux, Missouri — live current conditions, hourly and 7-day forecasts, NWS alerts, radar and satellite imagery, soil and crop conditions for Portage Des Sioux, St. Charles County.
Full aviation weather for Portage Des Sioux is published on the St Charles County Regional Airport/Smartt Field (KSET) page, 8 km away. It carries the current METAR decoded into plain language — surface wind, visibility, cloud layers and ceiling, temperature and dewpoint, and altimeter setting — alongside the raw observation as transmitted. 6 airfields within reach of Portage Des Sioux have their own pages, listed below.
The Terminal Aerodrome Forecast (TAF) is shown across its full validity period, with each change group broken out so you can see when conditions are expected to shift. Flight category is derived automatically — VFR, MVFR, IFR or LIFR — from reported ceiling and visibility, with runway details and field elevation alongside. Observations update roughly hourly and forecasts several times a day.
Other airports near Portage Des Sioux: St. Louis Lambert International Airport (KSTL) 20 km · St Louis Regional Airport (KALN) 26 km · Creve Coeur Airport (K1H0) 26 km · Spirit of St Louis Airport (KSUS) 40 km · St Louis Downtown Airport (KCPS) 43 km
Conditions reported at KSET describe the airfield itself. Weather 8 km away can differ, particularly in terrain or near the coast. For conditions at Portage Des Sioux specifically, see the current conditions and forecast above.
Soil conditions, frost risk and crop weather for Portage Des Sioux.
About Portage Des Sioux, Missouri
Portage Des Sioux rests on a broad, fertile plain where the Missouri River, a colossal serpent of brown water, begins its eastward turn. It lies 8.8 miles west-north-west of Alton, IL (from Alton, IL: bearing 286°T), and is situated 9.4 miles north of Florissant. The land here slopes gently, a vast expanse of cultivated fields stretching towards the horizon, punctuated by stands of cottonwood and sycamore that line the riverbanks. The air carries a perpetual scent of damp earth and ripening crops, particularly potent in the humid embrace of late summer. Even on a windless day, a subtle current seems to flow, a whisper from the river that shapes the very character of Portage Des Sioux, a quietude that settles deep into the bones of the place. This sliver of land holds a history as old as the river itself, its name echoing French explorers who recognized the strategic portage here, a vital link between waterways. For generations, its economy has been tethered to the rich alluvial soil, yielding bountiful harvests of corn and soybeans, their emerald rows marching in orderly fashion under the vast Missouri sky. The river, though no longer the primary artery of commerce it once was, still dictates the pace of life, its seasonal moods reflected in the local rhythms. Remnants of earlier settlements, whispers of steamboat days, are etched not in grand monuments but in the weathered wood of old barns and the quiet deference of the land itself to the persistent flow of time and water.
Live animated radar for Portage Des Sioux and surroundings — RainViewer.
NOAA GOES-16 GEOCOLOR — live animated loop updated every 10 minutes. Shows cloud cover, storm systems and weather patterns across the continental US.
Source: NOAA/NESDIS GOES-East · Public domain · Auto-updates on page reload
| Location | Portage Des Sioux, St. Charles County, Missouri |
| Coordinates | 38.925049°N, 90.341781°W |
| Timezone | Central Time (America/Chicago) |
| ZIP Code(s) | 63373 |
| Area Code | 314 |
| Page generated | September 2026 |
| Weather data | Open-Meteo (open-source), NOAA National Weather Service |
About This Portage Des Sioux, Missouri Weather Page
This page provides live weather conditions and forecasts for Portage Des Sioux, Missouri, including current conditions, a 24-hour hourly forecast, 7-day outlook, NWS extended text forecast, precipitation radar and NOAA GOES-16 satellite imagery. Aviation weather — live METAR observations and TAF forecasts — is published separately on the pages for the nearest reporting airports, linked from the aviation section above. Additional sections may include tide predictions, wave height, wave direction and sea-surface temperature, a barometric pressure trend, and a solunar-based fishing forecast with a fishing-conditions rating for coastal localities, and soil temperature, crop weather and live USGS river gauge data for agricultural areas near a monitored waterway. All data updates automatically on every page visit.
Location data for Portage Des Sioux includes coordinates 38.925049°N, 90.341781°W, situated in St. Charles County. ZIP code 63373. Telephone area code: 314. Timezone: Central Time (America/Chicago).
Weather data is sourced from the NOAA National Weather Service (NWS) and the open-source Open-Meteo API. River and stream data is sourced from the USGS National Water Information System. Tide predictions are sourced from NOAA CO-OPS; marine and solunar data are modeled from Open-Meteo and public sunrise/moon calculations and should be treated as a general guide alongside on-the-water conditions. Radar is provided by RainViewer. Satellite imagery is sourced from NOAA/NESDIS GOES-East and is public domain.
