Weather for Chatham, Illinois
Current Weather
Five Day Weather Forecast
Thu
H: 96°F
L: 69°F
Fri
H: 83°F
L: 73°F
Sat
H: 89°F
L: 71°F
Sun
H: 83°F
L: 71°F
Mon
H: 87°F
L: 70°F
Air Quality
Nitrogen Dioxide: 10.3 μg/m3
Sulphur Dioxide: 2.9 μg/m3
Ozone: 90 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 8:25 PM
Daylight: 14 hrs 41 mins
Moon Transit: 3:19 PM
Moonset: 10:09 PM
Moon Phase: New
Moon Illumination: 2.4%
Best Times for Fishing or Hunting
Major Periods
2:26 AM - 4:56 AM2:49 PM - 5:19 PM
Minor Periods
9:39 PM - 11:09 PM7:48 AM - 9:18 AM
Action Rating: 3 out of 5
Flood Warning issued July 15 at 8:37PM CDT until July 19 at 4:00PM CDT by NWS Lincoln IL
Effective: Wed July 15, 2026, 8:37 PM
Expires: Thu July 16, 2026, 12:45 PM
...The Flood Warning is extended for the following rivers in Illinois... Illinois River at Beardstown affecting Schuyler, Brown, Cass and Morgan Counties. ...The Flood Warning continues for the following rivers in Illinois... Illinois River near Havana affecting Fulton, Cass and Mason 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 Sunday afternoon. * IMPACTS...At 14.4 feet, Seepage problems begin in the Coal Creek Drainage and Levee District. * ADDITIONAL DETAILS... - At 2:45 PM CDT Wednesday the stage was 15.9 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 2:45 PM CDT Wednesday was 16.2 feet. - Forecast...The river is expected to fall below flood stage late Sunday morning and continue falling to 12.2 feet Wednesday, July 22. - 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 15 at 8:37PM CDT until July 18 at 4:00PM CDT by NWS Lincoln IL
Effective: Wed July 15, 2026, 8:37 PM
Expires: Thu July 16, 2026, 12:45 PM
...The Flood Warning is extended for the following rivers in Illinois... Illinois River at Beardstown affecting Schuyler, Brown, Cass and Morgan Counties. ...The Flood Warning continues for the following rivers in Illinois... Illinois River near Havana affecting Fulton, Cass and Mason 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 Saturday afternoon. * IMPACTS...At 14.0 feet, Minor flooding begins to agricultural areas not protected by levees. * ADDITIONAL DETAILS... - At 2:45 PM CDT Wednesday the stage was 15.4 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 2:45 PM CDT Wednesday was 15.8 feet. - Forecast...The river is expected to fall below flood stage late Saturday morning and continue falling to 12.0 feet Wednesday, July 22. - 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: 14.88 μg/m3
Sulphur Dioxide: 2.26 μg/m3
Ozone: 81.13 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 8:25 PM
Daylight: 14 hrs 41 mins
Moon Transit: 3:19 PM
Moonset: 10:09 PM
Moon Phase: New
Moon Illumination: 2.4%
Best Times for Fishing or Hunting
Major Periods
2:26 AM - 4:56 AM2:49 PM - 5:19 PM
Minor Periods
9:39 PM - 11:09 PM7:48 AM - 9:18 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 8.88 μg/m3
Sulphur Dioxide: 1.67 μg/m3
Ozone: 74.71 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 8:24 PM
Daylight: 14 hrs 40 mins
Moon Transit: 4:08 PM
Moonset: 10:34 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.0%
Best Times for Fishing or Hunting
Major Periods
3:17 AM - 5:47 AM3:38 PM - 6:08 PM
Minor Periods
10:04 PM - 11:34 PM9:00 AM - 10:30 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 5.89 μg/m3
Sulphur Dioxide: 0.94 μg/m3
Ozone: 67.13 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 8:24 PM
Daylight: 14 hrs 38 mins
Moon Transit: 4:53 PM
Moonset: 10:57 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%
Best Times for Fishing or Hunting
Major Periods
4:04 AM - 6:34 AM4:23 PM - 6:53 PM
Minor Periods
10:27 PM - 11:57 PM10:10 AM - 11:40 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 6.88 μg/m3
Sulphur Dioxide: 1.17 μg/m3
Ozone: 77.25 μg/m3
Astronomical
Sun Transit: 1:05 PM
Sunset: 8:23 PM
Daylight: 14 hrs 37 mins
Moon Transit: 5:37 PM
Moonset: 11:19 PM
Moon Phase: Waxing Crescent
Moon Illumination: 22.6%
Best Times for Fishing or Hunting
Major Periods
4:48 AM - 7:18 AM5:07 PM - 7:37 PM
Minor Periods
12:00 AM - 12:00 AM11:16 AM - 12:46 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 15.98 μg/m3
Sulphur Dioxide: 1.14 μg/m3
Ozone: 48.38 μg/m3
Astronomical
Sun Transit: 1:05 PM
Sunset: 8:22 PM
Daylight: 14 hrs 35 mins
Moon Transit: 6:20 PM
Moonset: 12:19 AM
Moon Phase: Waxing Crescent
Moon Illumination: 32.7%
Best Times for Fishing or Hunting
Major Periods
5:32 AM - 8:02 AM5:50 PM - 8:20 PM
Minor Periods
12:21 AM - 1:51 PM12:00 AM - 12:00 AM
Action Rating: 4 out of 5