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Seneca, IL Weather
Tonight: Rain Showers Likely, low 51°F. Hourly and 7-day forecast from the National Weather Service. Times are local (CDT).
Seneca, IL current weather
54°F
Chance Rain Showers
Forecast for this hour. No recent report from a nearby station.
H -- / L 51°
No recent station report. NWS hourly forecast updated 10/30/2026, 7:51 PM PT
Hourly forecast
NWS, updated 10/30/2026, 7:51 PM PT
7-day forecast
Tap a day for details
Today10/3057% chance of precipitationLow 51°High
Tonight: Rain showers likely. Cloudy, with a low around 51. East wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Rain Showers LikelySat10/3160% chance of precipitationLow 54°High 67°
Saturday: Rain showers likely. Cloudy, with a high near 67. East southeast wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night: A slight chance of rain showers before 1am. Cloudy, with a low around 54. East southeast wind 0 to 5 mph, with gusts as high as 10 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Rain Showers LikelySun11/119% chance of precipitationLow 54°High 68°
Sunday: A slight chance of rain showers after noon. Partly sunny, with a high near 68. Southeast wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.
Sunday Night: Mostly cloudy, with a low around 54. Southeast wind around 5 mph, with gusts as high as 15 mph.
Partly Sunny then Slight Chance Rain ShowersMon11/255% chance of precipitationLow 59°High 68°
Monday: A chance of rain showers. Mostly cloudy, with a high near 68. Chance of precipitation is 50%.
Monday Night: Rain showers likely. Mostly cloudy, with a low around 59.
Chance Rain ShowersTue11/373% chance of precipitationLow 57°High 72°
Tuesday: Rain showers likely. Mostly cloudy, with a high near 72.
Tuesday Night: Rain showers likely. Mostly cloudy, with a low around 57.
Rain Showers LikelyWed11/454% chance of precipitationLow 51°High 68°
Wednesday: A chance of rain showers. Partly sunny, with a high near 68.
Wednesday Night: A chance of rain showers. Mostly cloudy, with a low around 51.
Chance Rain ShowersThu11/538% chance of precipitationLow 46°High 64°
Thursday: A chance of rain showers. Mostly cloudy, with a high near 64.
Thursday Night: A slight chance of rain showers before midnight. Mostly cloudy, with a low around 46.
Chance Rain ShowersFri11/620% chance of precipitationLow High 61°
Friday: A slight chance of rain showers. Partly sunny, with a high near 61.
Slight Chance Rain Showers
Forecast for 41.323, -88.610 from the NWS LOT office, updated 10/30/2026, 7:51 PM PT · Official forecast on weather.gov
From the National Weather Service; may be delayed. Not for life-safety decisions. In an emergency, call 911.
Next 6 hours
NWS hourly forecast
- Now54°Chance Rain Showers26%10 mph
- 11 PM53°Chance Rain Showers31%5 mph
- 12 AM53°Chance Rain Showers37%5 mph
- 1 AM53°Chance Rain Showers40%5 mph
- 2 AM52°Chance Rain Showers44%5 mph
- 3 AM52°Chance Rain Showers48%5 mph
Hourly details
Next 7 days: temperature chart, feels like, rain and snow amounts, sky cover, wind and gustsShowHide
Radar and satellite
National radarNEXRAD (up to 24 hours) and GOES
Frequently asked questions
- Will it rain in Seneca, IL in the next 24 hours?
- The hourly forecast shows a 52% chance of precipitation around 10/31/2026, 4:00 AM CDT.
- What time is sunrise and sunset in Seneca, IL today?
- Sunrise is about 7:23 AM CDT and sunset is about 5:52 PM CDT (calculated for the center of the area, within a few minutes).
- What is the normal October weather in Seneca, IL?
- At Marseilles Lock, the 1991 to 2020 normal high in October is 64°F and the normal low is 41°F.
Rain and snow totals
Next 3 days, NWS forecast grid
- Rain (liquid)
- 0.44 in
- Snow
- 0.00 in
- Ice
- 0.00 in
Nearby hazards
Illinois hazardsSevere storm and flash flood outlooks, expected rain, river flooding and wildfires near this area
- Severe storm outlook today:No thunderstorm risk area over this locationOutlook map
- Excessive rainfall outlook (flash flood risk):Could not check the Weather Prediction Center outlook right now.
- River gauges within 40 miles at or above flood stage: None reported
- Active wildfires within 50 miles: None reported
UV and air quality forecast
EPA and AirNow
- AQI forecast tomorrow (Joliet and Will County)
- ModeratePM2.5
- AQI forecast tomorrow (Joliet and Will County)
- ModeratePM2.5
Drought
By countyLaSalle County, week of 10/27/2026
No drought or abnormal dryness in this county.
Sun and moon
Local time, center of the area
- Sunrise
- 7:23 AM
- Sunset
- 5:52 PM
- Daylight
- 10 hr 28 min
- Moon
- Waning Gibbous 74% lit
- First light (civil dawn)
- 6:55 AM
- Last light (civil dusk)
- 6:20 PM
- Moonrise
- 9:29 PM
- Moonset
- 12:41 PM
Normal October weather
ClimateNormal October high 64°, low 41°, precipitation 3.20 in for the month. 1991 to 2020 normals at Marseilles Lock, 7 mi away.
Other places nearby
Data sources
- National Weather Service APINOAA · Official site
- Convective Outlooks and Storm ReportsNOAA Storm Prediction Center · Official site
- Excessive Rainfall Outlook and Quantitative Precipitation ForecastsNOAA Weather Prediction Center · Official site
- National Water Prediction ServiceNOAA National Weather Service · Official site
- WFIGS Current Wildland Fire IncidentsNational Interagency Fire Center · Official site
- UV Index Forecast (Envirofacts)U.S. Environmental Protection Agency and NOAA · Official site
- AirNowU.S. Environmental Protection Agency · Official site
- NWS HeatRisk (experimental)NOAA National Weather Service · Official site
- U.S. Drought MonitorNational Drought Mitigation Center, USDA and NOAA · Official site
- BEACON 2.0 Beach Advisory and Closing On-line NotificationU.S. Environmental Protection Agency · Official site
- U.S. Climate Normals 1991-2020NOAA National Centers for Environmental Information · Official site
- Tides & Currents (CO-OPS API)NOAA Center for Operational Oceanographic Products and Services · Official site
- NEXRAD radar tilesIowa Environmental Mesonet, Iowa State University · Official site
- GOES-East and GOES-West GeoColor imageryNOAA NESDIS Center for Satellite Applications and Research · Official site
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About this data
Weather and emergencies: Weather, air quality and hazard information on this page is delayed and may be incomplete. It is not a substitute for official warnings. Always follow the National Weather Service, local emergency management and public safety officials. In an emergency, call 911. For evacuation orders, use your local official alert system.
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