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O'Fallon, Missouri Weather

O'Fallon, Missouri — live current conditions, hourly and 7-day forecasts, NWS alerts, aviation weather, radar and satellite imagery for O'Fallon, St. Louis (city).

🌡️ Current Conditions
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24-Hour Forecast
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Current Conditions Detail
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7-Day Forecast
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✈️ Aviation Weather

Flight conditions near O'Fallon — sourced from the FAA Aviation Weather Center. Nearest reporting station: locating…

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NWS Extended Forecast
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📡 Precipitation Radar

Live animated radar for O'Fallon and surroundings — RainViewer.

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🛰️ Satellite Imagery

NOAA GOES-16 GEOCOLOR — live animated loop updated every 10 minutes. Shows cloud cover, storm systems and weather patterns across the continental US.

NOAA GOES-16 CONUS GEOCOLOR satellite animated loop
🛰️ GEOCOLOR loop 🌡️ Infrared (IR) 🌀 NHC Hurricane Satellite 🔗 NOAA Full Viewer

Source: NOAA/NESDIS GOES-East · Public domain · Auto-updates on page reload

🌙 Astronomy
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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.

LocationO'Fallon, St. Louis (city), Missouri
Coordinates38.6722°N, 90.2295°W
TimezoneCentral Time (America/Chicago)
Area Code314, 417, 557, 573, 636, 660, 816, 975
Page generatedJune 2026
Weather dataOpen-Meteo (open-source), NOAA National Weather Service