Weather for Seneca, Illinois
Current Weather
Five Day Weather Forecast
Tue
H: 89°F
L: 67°F
Wed
H: 73°F
L: 66°F
Thu
H: 78°F
L: 56°F
Fri
H: 77°F
L: 53°F
Sat
H: 72°F
L: 48°F
Air Quality
Nitrogen Dioxide: 1.85 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 97 μg/m3
Astronomical
Sun Transit: 12:54 AM
Sunset: 7:34 PM
Daylight: 13 hrs 17 mins
Moon Transit: 10:34 AM
Moonset: 4:35 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.9%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM10:04 AM - 12:34 AM
Minor Periods
4:05 PM - 5:35 PM4:15 AM - 5:45 AM
Action Rating: 2 out of 5
Flood Warning issued April 13 at 10:13AM CDT until April 14 at 7:00PM CDT by NWS Chicago IL
Effective: Mon April 13, 2026, 10:13 AM
Expires: Tue April 14, 2026, 4:15 AM
...The Flood Warning continues for the following rivers in Illinois...Indiana... Fox River at Algonquin Lock & Dam tailwater affecting McHenry, Lake IL and Kane Counties. Kankakee River at Shelby affecting Newton and Lake IN Counties. For the Fox River (Illinois)...including Algonquin Lock & Dam tailwater...Minor flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Fox River from Johnsburg downstream to Red Gate Road in St. Charles, including the Algonquin Lock & Dam tailwater gauge. * WHEN...Until tomorrow evening. * IMPACTS...At 9.5 feet, Fox River Drive threatened in East Dundee. Boathouses threatened along the river in Cary. * ADDITIONAL DETAILS... - At 9:30 AM CDT Monday the stage was 9.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:30 AM CDT Monday was 9.6 feet. - Forecast...The river is expected to fall below flood stage just after midnight tonight and continue falling to 8.4 feet Monday, April 20. - Flood stage is 9.5 feet. - http://www.weather.gov/safety/flood
A Flood Warning means water levels above flood stage are imminent or may already be occurring. Persons along rivers and streams in the warned area should take immediate precautions to protect life and property. These forecasts are based on observed precipitation as well as forecast precipitation 24 hours into the future. Changes to the rainfall forecast, or any additional rainfall after 24 hours, may cause changes to these river forecasts. Additional information is available at www.weather.gov. The next statement will be issued by this evening.
Flood Warning issued April 13 at 8:50PM CDT until April 14 at 7:00PM CDT by NWS Chicago IL
Effective: Mon April 13, 2026, 8:50 PM
Expires: Tue April 14, 2026, 3:00 PM
...The Flood Warning continues for the following rivers in Illinois... Fox River at Algonquin Lock & Dam tailwater affecting Kane, Lake IL and McHenry Counties. For the Fox River (Illinois)...including Algonquin Lock & Dam tailwater...Minor flooding is occurring. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Fox River from Johnsburg downstream to Red Gate Road in St. Charles, including the Algonquin Lock & Dam tailwater gauge. * WHEN...Until tomorrow evening. * IMPACTS...At 9.5 feet, Fox River Drive threatened in East Dundee. Boathouses threatened along the river in Cary. * ADDITIONAL DETAILS... - At 8:30 PM CDT Monday the stage was 9.5 feet. - Forecast...The river is expected to remain near flood stage Monday night before settling below flood stage on Tuesday. - Flood stage is 9.5 feet. - http://www.weather.gov/safety/flood
A Flood Warning means water levels above flood stage are imminent or may already be occurring. Persons along rivers and streams in the warned area should take immediate precautions to protect life and property. These forecasts are based on observed precipitation as well as forecast precipitation 24 hours into the future. Changes to the rainfall forecast, or any additional rainfall after 24 hours, may cause changes to these river forecasts. Additional information is available at www.weather.gov. The next statement will be issued by Tuesday afternoon.
Weather Forecast
Air Quality
Nitrogen Dioxide: 3.47 μg/m3
Sulphur Dioxide: 1.65 μg/m3
Ozone: 82.88 μg/m3
Astronomical
Sun Transit: 12:54 AM
Sunset: 7:34 PM
Daylight: 13 hrs 17 mins
Moon Transit: 10:34 AM
Moonset: 4:35 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.9%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM10:04 AM - 12:34 AM
Minor Periods
4:05 PM - 5:35 PM4:15 AM - 5:45 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 5.49 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 67.04 μg/m3
Astronomical
Sun Transit: 12:54 AM
Sunset: 7:35 PM
Daylight: 13 hrs 20 mins
Moon Transit: 10:33 AM
Moonset: 5:47 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.1%
Best Times for Fishing or Hunting
Major Periods
10:03 AM - 12:33 AM10:03 AM - 12:33 AM
Minor Periods
5:17 PM - 6:47 PM4:37 AM - 6:07 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 4.31 μg/m3
Sulphur Dioxide: 1.43 μg/m3
Ozone: 80 μg/m3
Astronomical
Sun Transit: 12:54 AM
Sunset: 7:36 PM
Daylight: 13 hrs 22 mins
Moon Transit: 12:09 AM
Moonset: 7:02 PM
Moon Phase: New
Moon Illumination: 0.8%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM11:39 AM - 2:09 PM
Minor Periods
6:32 PM - 8:02 PM5:00 AM - 6:30 AM
Action Rating: 5 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 7.44 μg/m3
Sulphur Dioxide: 1.48 μg/m3
Ozone: 78.64 μg/m3
Astronomical
Sun Transit: 12:53 AM
Sunset: 7:37 PM
Daylight: 13 hrs 25 mins
Moon Transit: 1:01 PM
Moonset: 8:22 PM
Moon Phase: New
Moon Illumination: 4.1%
Best Times for Fishing or Hunting
Major Periods
12:16 AM - 2:46 AM12:31 AM - 3:01 PM
Minor Periods
7:52 PM - 9:22 PM5:26 AM - 6:56 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 4.03 μg/m3
Sulphur Dioxide: 2.47 μg/m3
Ozone: 91 μg/m3
Astronomical
Sun Transit: 12:53 AM
Sunset: 7:38 PM
Daylight: 13 hrs 28 mins
Moon Transit: 1:58 PM
Moonset: 9:42 PM
Moon Phase: New
Moon Illumination: 1.2%
Best Times for Fishing or Hunting
Major Periods
1:10 AM - 3:40 AM1:28 PM - 3:58 PM
Minor Periods
9:12 PM - 10:42 PM5:58 AM - 7:28 AM
Action Rating: 4 out of 5