O'Fallon, Missouri Weather
O'Fallon, Missouri — live current conditions, hourly and 7-day forecasts, NWS alerts, radar and satellite imagery for O'Fallon, St. Charles County.
Full aviation weather for O'Fallon is published on the Spirit of St Louis Airport (KSUS) page, 17 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 O'Fallon 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 O'Fallon: Creve Coeur Airport (K1H0) 19 km · Greensfield Airport (KM71) 25 km · St Charles County Regional Airport/Smartt Field (KSET) 27 km · St. Louis Lambert International Airport (KSTL) 29 km · Washington Regional Airport (KFYG) 36 km
Conditions reported at KSUS describe the airfield itself. Weather 17 km away can differ, particularly in terrain or near the coast. For conditions at O'Fallon specifically, see the current conditions and forecast above.
About O'Fallon, Missouri
O'Fallon unfolds across a landscape of gentle, rolling terrain, where the fertile earth, once a verdant carpet of prairie grasses, now yields to a carefully cultivated suburban sprawl. The air here, especially after a summer rain, carries a clean, sweet scent, a subtle perfume of mown lawns and distant cornfields. Sunlight, often mellow and diffused through the humid Missouri air, casts a soft glow on the rows of homes and the spreading branches of oak and maple trees that line its streets. The horizon, though softened by development, still hints at the vastness of the American heartland, a subtle reminder of the open skies that once dominated this vista. This corner of St. Charles County owes its character to a history intertwined with agricultural roots and a forward-looking embrace of modern growth. Early settlers, drawn by the rich soil and proximity to vital waterways, laid the groundwork for a community that has steadily expanded, becoming a vibrant economic hub. The legacy of farming is still discernible in the occasional weathered barn or the names of streets that echo bygone fields, yet O'Fallon's present thrives on a diverse economy, attracting businesses and families alike. Its accessibility, a key advantage, has fostered a dynamic spirit, a place where the quiet hum of daily life is punctuated by the energetic pulse of a community looking towards the future, a place that cherishes its past while building its tomorrow.
Live animated radar for O'Fallon 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 | O'Fallon, St. Charles County, Missouri |
| Coordinates | 38.810608°N, 90.699848°W |
| Timezone | Central Time (America/Chicago) |
| ZIP Code(s) | 63115, 63367 |
| Area Code | 314 |
| Page generated | September 2026 |
| Weather data | Open-Meteo (open-source), NOAA National Weather Service |
About This O'Fallon, Missouri Weather Page
This page provides live weather conditions and forecasts for O'Fallon, 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 O'Fallon includes coordinates 38.810608°N, 90.699848°W, situated in St. Charles County. ZIP code 63115, 63367. 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.
