Weather for Chatham, Illinois
Current Weather
Five Day Weather Forecast
Tue
H: 90°F
L: 67°F
Wed
H: 78°F
L: 64°F
Thu
H: 83°F
L: 65°F
Fri
H: 87°F
L: 63°F
Sat
H: 71°F
L: 45°F
Air Quality
Nitrogen Dioxide: 2.55 μg/m3
Sulphur Dioxide: 1.65 μg/m3
Ozone: 107 μg/m3
Astronomical
Sun Transit: 12:58 AM
Sunset: 7:36 PM
Daylight: 13 hrs 13 mins
Moon Transit: 10:38 AM
Moonset: 4:40 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.9%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM10:08 AM - 12:38 AM
Minor Periods
4:10 PM - 5:40 PM4:18 AM - 5:48 AM
Action Rating: 2 out of 5
Flood Warning issued April 13 at 8:37PM CDT by NWS Lincoln IL
Effective: Mon April 13, 2026, 8:37 PM
Expires: Tue April 14, 2026, 12:45 PM
...The Flood Warning is extended for the following rivers in Illinois... Illinois River near Havana affecting Cass, Fulton and Mason Counties. Illinois River at Beardstown affecting Cass, Brown, Schuyler and Morgan Counties. .The following forecasts are based on observed precipitation, soil moisture conditions, and forecast precipitation. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Illinois River at Beardstown. * WHEN...Until further notice. * IMPACTS...At 14.4 feet, Seepage problems begin in the Coal Creek Drainage and Levee District. * ADDITIONAL DETAILS... - At 7:45 PM CDT Monday the stage was 15.1 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 7:45 PM CDT Monday was 15.2 feet. - Forecast...The river is expected to fall to 14.0 feet Monday, April 20. - Flood stage is 14.0 feet. - http://www.weather.gov/safety/flood
Persons with interests along this river need to remain aware of the latest forecasts and associated flood risk for their area. Stay tuned for further updates on this flooding situation. Caution is urged when walking near riverbanks. Additional information is available at www.weather.gov.
Flood Warning issued April 13 at 8:37PM CDT by NWS Lincoln IL
Effective: Mon April 13, 2026, 8:37 PM
Expires: Tue April 14, 2026, 12:45 PM
...The Flood Warning is extended for the following rivers in Illinois... Illinois River near Havana affecting Cass, Fulton and Mason Counties. Illinois River at Beardstown affecting Cass, Brown, Schuyler and Morgan Counties. .The following forecasts are based on observed precipitation, soil moisture conditions, and forecast precipitation. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Illinois River near Havana. * WHEN...Until further notice. * IMPACTS...At 14.0 feet, Minor flooding begins to agricultural areas not protected by levees. * ADDITIONAL DETAILS... - At 7:45 PM CDT Monday the stage was 15.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 7:45 PM CDT Monday was 15.7 feet. - Forecast...The river is expected to fall to 14.4 feet Monday, April 20. - Flood stage is 14.0 feet. - http://www.weather.gov/safety/flood
Persons with interests along this river need to remain aware of the latest forecasts and associated flood risk for their area. Stay tuned for further updates on this flooding situation. Caution is urged when walking near riverbanks. Additional information is available at www.weather.gov.
Weather Forecast
Air Quality
Nitrogen Dioxide: 3.43 μg/m3
Sulphur Dioxide: 1.73 μg/m3
Ozone: 84.84 μg/m3
Astronomical
Sun Transit: 12:58 AM
Sunset: 7:36 PM
Daylight: 13 hrs 13 mins
Moon Transit: 10:38 AM
Moonset: 4:40 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.9%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM10:08 AM - 12:38 AM
Minor Periods
4:10 PM - 5:40 PM4:18 AM - 5:48 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 4.06 μg/m3
Sulphur Dioxide: 1.65 μg/m3
Ozone: 78.56 μg/m3
Astronomical
Sun Transit: 12:58 AM
Sunset: 7:37 PM
Daylight: 13 hrs 15 mins
Moon Transit: 10:33 AM
Moonset: 5:51 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
5:21 PM - 6:51 PM4:41 AM - 6:11 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 3.78 μg/m3
Sulphur Dioxide: 1.28 μg/m3
Ozone: 81.96 μg/m3
Astronomical
Sun Transit: 12:58 AM
Sunset: 7:38 PM
Daylight: 13 hrs 18 mins
Moon Transit: 12:13 AM
Moonset: 7:04 PM
Moon Phase: New
Moon Illumination: 0.8%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM11:43 AM - 2:13 PM
Minor Periods
6:34 PM - 8:04 PM5:06 AM - 6:36 AM
Action Rating: 5 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 6.43 μg/m3
Sulphur Dioxide: 1.97 μg/m3
Ozone: 79.28 μg/m3
Astronomical
Sun Transit: 12:58 AM
Sunset: 7:39 PM
Daylight: 13 hrs 20 mins
Moon Transit: 1:05 PM
Moonset: 8:22 PM
Moon Phase: New
Moon Illumination: 4.1%
Best Times for Fishing or Hunting
Major Periods
12:12 AM - 2:42 AM12:35 AM - 3:05 PM
Minor Periods
7:52 PM - 9:22 PM5:34 AM - 7:04 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 4.88 μg/m3
Sulphur Dioxide: 1.87 μg/m3
Ozone: 82.31 μg/m3
Astronomical
Sun Transit: 12:57 AM
Sunset: 7:40 PM
Daylight: 13 hrs 23 mins
Moon Transit: 2:02 PM
Moonset: 9:41 PM
Moon Phase: New
Moon Illumination: 1.2%
Best Times for Fishing or Hunting
Major Periods
1:06 AM - 3:36 AM1:32 PM - 4:02 PM
Minor Periods
9:11 PM - 10:41 PM6:06 AM - 7:36 AM
Action Rating: 4 out of 5