O'Fallon, Missouri Weather
O'Fallon, Missouri — live current conditions, hourly and 7-day forecasts, NWS alerts, radar and satellite imagery, soil and crop conditions for O'Fallon, St. Louis (city).
Full aviation weather for O'Fallon is published on the St Louis Downtown Airport (KCPS) page, 13 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: St. Louis Lambert International Airport (KSTL) 15 km · Creve Coeur Airport (K1H0) 25 km · St Louis Regional Airport (KALN) 29 km · St Charles County Regional Airport/Smartt Field (KSET) 34 km · Spirit of St Louis Airport (KSUS) 37 km
Conditions reported at KCPS describe the airfield itself. Weather 13 km away can differ, particularly in terrain or near the coast. For conditions at O'Fallon specifically, see the current conditions and forecast above.
Soil conditions, frost risk and crop weather for O'Fallon.
About O'Fallon, Missouri
O'Fallon rises from the gently rolling Missouri landscape, a place where the sky feels vast and the air, especially in the early morning, carries a hint of damp earth and distant fields. It lies 3.5 miles north-north-west of Saint Louis, MO (from Saint Louis, MO: bearing 331°T), and is situated 3.5 miles north-north-west of St. Louis. The terrain here, a softened echo of the broader Ozark foothills, presents itself in broad, sweeping vistas rather than sharp, dramatic peaks. Verdant lawns and mature trees, remnants of older homesteads, punctuate the newer developments, creating a comfortable, lived-in character. During the summer evenings, the light softens to a buttery glow, painting the western sky in hues of rose and lavender, a quiet beauty that settles over the neighborhoods like a warm breath. The roots of O'Fallon run deep into the agricultural past of St. Louis County, a history that still whispers in the names of its streets and the enduring presence of open spaces. Once a landscape of fertile farmland, its economy has steadily diversified, embracing a modern blend of retail, services, and light industry, yet the echo of its agrarian origins remains. The spirit of its founding fathers, who saw potential in this fertile ground, continues to shape O'Fallon's identity, fostering a sense of community that is both progressive and grounded. This enduring legacy is visible in the way families gather at local parks and community events, a quiet testament to a shared past and a hopeful future.
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. Louis (city), Missouri |
| Coordinates | 38.6722°N, 90.2295°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 38.672200°N, 90.229500°W, situated in St. Louis (city). 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.
