Weather for Chatham, Illinois
Current Weather
Five Day Weather Forecast
Fri
H: 87°F
L: 69°F
Sat
H: 77°F
L: 70°F
Sun
H: 80°F
L: 65°F
Mon
H: 81°F
L: 63°F
Tue
H: 83°F
L: 68°F
Air Quality
Nitrogen Dioxide: 12.2 μg/m3
Sulphur Dioxide: 2.5 μg/m3
Ozone: 64 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 8:28 PM
Daylight: 14 hrs 48 mins
Moon Transit: 9:08 AM
Moonset: 4:58 PM
Moon Phase: Waning Crescent
Moon Illumination: 9.7%
Best Times for Fishing or Hunting
Major Periods
8:38 AM - 11:08 AM9:12 PM - 11:42 PM
Minor Periods
4:28 PM - 5:58 PM1:00 AM - 2:30 AM
Action Rating: 2 out of 5
Flood Warning issued July 9 at 11:02AM CDT by NWS Lincoln IL
Effective: Thu July 9, 2026, 11:02 AM
Expires: Fri July 10, 2026, 3:15 AM
...The Flood Warning continues for the following rivers in Illinois... Illinois River at Beardstown affecting Brown, Cass, Morgan and Schuyler 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 18.0 feet, Seepage problems begin in the Lost Creek Drainage and Levee District. * ADDITIONAL DETAILS... - At 10:45 AM CDT Thursday the stage was 17.3 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:45 AM CDT Thursday was 17.5 feet. - Forecast...The river is expected to fall to 15.5 feet Thursday, July 16. - 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. Additional information is available at www.weather.gov.
Flood Warning issued July 9 at 11:01AM CDT by NWS Lincoln IL
Effective: Thu July 9, 2026, 11:01 AM
Expires: Fri July 10, 2026, 3:15 AM
...The Flood Warning continues for the following rivers in Illinois... Illinois River near Havana affecting Cass, Mason and Fulton Counties. .The following forecasts are based on observed precipitation, soil moisture conditions, and forecast precipitation. * WHAT...Moderate flooding is occurring and moderate flooding is forecast. * WHERE...Illinois River near Havana. * WHEN...Until further notice. * ADDITIONAL DETAILS... - At 10:45 AM CDT Thursday the stage was 17.4 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:45 AM CDT Thursday was 17.4 feet. - Forecast...The river is expected to rise to a crest of 17.4 feet this afternoon. - 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. Additional information is available at www.weather.gov.
Flood Warning issued July 9 at 9:52PM CDT by NWS Lincoln IL
Effective: Thu July 9, 2026, 9:52 PM
Expires: Fri July 10, 2026, 2:00 PM
...The Flood Warning continues for the following rivers in Illinois... Illinois River at Peoria affecting Tazewell, Peoria and Woodford Counties. Illinois River at Beardstown affecting Cass, Brown, Schuyler and Morgan Counties. Illinois River near Havana affecting Mason, Fulton and Cass Counties. .The following forecasts are based on observed precipitation, soil moisture conditions, and forecast precipitation. * WHAT...Moderate flooding is occurring and moderate flooding is forecast. * WHERE...Illinois River near Havana. * WHEN...Until further notice. * ADDITIONAL DETAILS... - At 8:45 PM CDT Thursday the stage was 17.3 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:45 PM CDT Thursday was 17.4 feet. - Forecast...The river is expected to fall to 14.0 feet Thursday, July 16. - 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. Additional information is available at www.weather.gov.
Flood Warning issued July 9 at 9:52PM CDT by NWS Lincoln IL
Effective: Thu July 9, 2026, 9:52 PM
Expires: Fri July 10, 2026, 2:00 PM
...The Flood Warning continues for the following rivers in Illinois... Illinois River at Peoria affecting Tazewell, Peoria and Woodford Counties. Illinois River at Beardstown affecting Cass, Brown, Schuyler and Morgan Counties. Illinois River near Havana affecting Mason, Fulton and Cass 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 18.0 feet, Seepage problems begin in the Lost Creek Drainage and Levee District. * ADDITIONAL DETAILS... - At 8:45 PM CDT Thursday the stage was 17.3 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:45 PM CDT Thursday was 17.4 feet. - Forecast...The river is expected to fall to 15.3 feet Thursday, July 16. - 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. Additional information is available at www.weather.gov.
Weather Forecast
Air Quality
Nitrogen Dioxide: 6.87 μg/m3
Sulphur Dioxide: 2.16 μg/m3
Ozone: 86.25 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 8:28 PM
Daylight: 14 hrs 48 mins
Moon Transit: 9:08 AM
Moonset: 4:58 PM
Moon Phase: Waning Crescent
Moon Illumination: 9.7%
Best Times for Fishing or Hunting
Major Periods
8:38 AM - 11:08 AM9:12 PM - 11:42 PM
Minor Periods
4:28 PM - 5:58 PM1:00 AM - 2:30 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 6.85 μg/m3
Sulphur Dioxide: 1.34 μg/m3
Ozone: 67.25 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 8:28 PM
Daylight: 14 hrs 47 mins
Moon Transit: 10:11 AM
Moonset: 6:14 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.1%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM9:41 AM - 12:11 AM
Minor Periods
5:44 PM - 7:14 PM1:46 AM - 3:16 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 6.43 μg/m3
Sulphur Dioxide: 1.21 μg/m3
Ozone: 72.54 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 8:27 PM
Daylight: 14 hrs 46 mins
Moon Transit: 11:17 AM
Moonset: 7:22 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.8%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM10:47 AM - 1:17 PM
Minor Periods
6:52 PM - 8:22 PM2:43 AM - 4:13 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 8.95 μg/m3
Sulphur Dioxide: 1.11 μg/m3
Ozone: 75.38 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 8:27 PM
Daylight: 14 hrs 45 mins
Moon Transit: 12:24 AM
Moonset: 8:20 PM
Moon Phase: New
Moon Illumination: 0.1%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM11:54 AM - 2:24 PM
Minor Periods
7:50 PM - 9:20 PM3:53 AM - 5:23 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 26.7 μg/m3
Sulphur Dioxide: 1.26 μg/m3
Ozone: 35.63 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 8:26 PM
Daylight: 14 hrs 44 mins
Moon Transit: 1:28 PM
Moonset: 9:04 PM
Moon Phase: New
Moon Illumination: 1.9%
Best Times for Fishing or Hunting
Major Periods
12:30 AM - 3:00 AM12:58 AM - 3:28 PM
Minor Periods
8:34 PM - 10:04 PM5:10 AM - 6:40 AM
Action Rating: 4 out of 5