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Summit, Illinois Weather

Summit, Illinois — live current conditions, hourly and 7-day forecasts, NWS alerts, aviation weather, radar and satellite imagery for Summit, St. Clair County.

🌡️ 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 Summit — 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 Summit 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 Summit, Illinois

Summit unfurls across a landscape of gentle, rolling terrain, where the rich, dark soil hints at centuries of cultivation and a subtle, persistent moisture in the air lends a verdant hue to the surrounding woodlands. It lies 2.4 miles north-north-west of Belleville, IL (from Belleville, IL: bearing 332°T), and is situated 5.8 miles west-south-west of O'Fallon. The sky here often stretches wide and luminous, particularly as twilight begins to descend, bathing the scattered farmsteads and the cluster of homes in a softened, almost ethereal glow. The trees, a mix of oak and maple, stand sentinel along the few roadways, their leaves rustling with a sound that is both a whisper and a sigh, a constant murmur against the quietude of the countryside. The very air seems to carry the scent of damp earth and distant woodsmoke, a comforting perfume that speaks of a life lived in close communion with the land. The story of Summit is one deeply entwined with the agricultural bounty of St. Clair County, a place where generations have worked the earth, coaxing sustenance from its fertile depths. While farming remains a bedrock of its economy, the proximity to larger urban centers has also shaped Summit’s character, drawing in those who seek a more peaceful existence without entirely severing ties to the broader currents of commerce and industry. Evidence of earlier lives, perhaps marked by the rise and fall of small businesses or the quiet growth of families, can be glimpsed in the enduring architecture and the enduring spirit of its residents. The local character is one of quiet resilience, a practical optimism forged in the face of changing times, where neighborly concern is as readily offered as a helping hand.

LocationSummit, St. Clair County, Illinois
Coordinates38.551161°N, 90.004827°W
TimezoneCentral Time (America/Chicago)
Area Code217, 224, 309, 312, 331, 447, 464, 618, 630, 708, 773, 779, 815, 847, 872
Page generatedJune 2026
Weather dataOpen-Meteo (open-source), NOAA National Weather Service