Seneca, Illinois Weather
Seneca, Illinois — live current conditions, hourly and 7-day forecasts, NWS alerts, aviation weather, radar and satellite imagery, soil and crop conditions for Seneca, LaSalle County.
Flight conditions near Seneca. Data source: locating…
Soil conditions, frost risk and crop weather for Seneca.
About Seneca, Illinois
Seneca rests on a broad, flat plain where the Illinois River, a wide and languid artery, bends its course, reflecting the endless, pale blue sky. It lies 29.0 miles south-south-west of Oswego, IL (from Oswego, IL: bearing 208°T), and is situated 5.3 miles east-south-east of Marseilles. The land around Seneca is a rich, dark loam, stretching out in vast agricultural fields that give way to stands of mature trees lining the riverbanks. Here, the air often carries the scent of damp earth and ripening crops, a subtle perfume that mingles with the occasional whiff of diesel from passing barges. The character of Seneca is one of quiet perseverance, a place where the land dictates the rhythm of life, and the river offers both sustenance and a constant, murmuring presence. The history of Seneca is deeply entwined with the Illinois River, a vital transportation corridor since the days of early explorers and fur traders. For generations, the fertile soil has supported a thriving agricultural economy, with corn and soybeans dominating the landscape, their emerald and gold hues shifting with the seasons. The arrival of industry, particularly related to the chemical and manufacturing sectors, has added another layer to Seneca's economic fabric, bringing a different kind of hum to the town. While not a grand metropolis, Seneca holds a quiet dignity, a place where the echoes of its past as a river port and agricultural hub can still be felt, a subtle undercurrent beneath the steady pulse of contemporary life.
Live animated radar for Seneca 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 | Seneca, LaSalle County, Illinois |
| Coordinates | 41.311144°N, 88.609794°W |
| Timezone | Central Time (America/Chicago) |
| ZIP Code(s) | 61360, 60450 |
| Area Code | 815, 708 |
| Page generated | July 2026 |
| Weather data | Open-Meteo (open-source), NOAA National Weather Service |
About This Seneca, Illinois Weather Page
This page provides live weather conditions and forecasts for Seneca, Illinois, including current conditions, a 24-hour hourly forecast, 7-day outlook, NWS extended text forecast, real-time aviation weather (live METAR and TAF reports from the nearest reporting airport, with a modeled estimate shown when no station is in range), precipitation radar and NOAA GOES-16 satellite imagery. 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 Seneca includes coordinates 41.311144°N, 88.609794°W, situated in LaSalle County. ZIP code 61360, 60450. Telephone area code: 815, 708. Timezone: Central Time (America/Chicago).
Weather data is sourced from the NOAA National Weather Service (NWS) and the open-source Open-Meteo API. Aviation data is sourced from aviationweather.gov (NOAA), with a modeled estimate used where no nearby reporting station is available. 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.
