Weather for Chatham, Illinois
Current Weather
Five Day Weather Forecast
Wed
H: 83°F
L: 59°F
Thu
H: 81°F
L: 65°F
Fri
H: 74°F
L: 66°F
Sat
H: 83°F
L: 65°F
Sun
H: 89°F
L: 72°F
Air Quality
Nitrogen Dioxide: 2.3 μg/m3
Sulphur Dioxide: 2 μg/m3
Ozone: 94 μg/m3
Astronomical
Sun Transit: 1:01 PM
Sunset: 8:31 PM
Daylight: 14 hrs 59 mins
Moon Transit: 9:08 PM
Moonset: 1:40 AM
Moon Phase: First Quarter
Moon Illumination: 71.7%
Best Times for Fishing or Hunting
Major Periods
8:19 AM - 10:49 AM8:38 PM - 11:08 PM
Minor Periods
3:34 PM - 5:04 PM1:10 AM - 2:40 AM
Action Rating: 3 out of 5
Flood Watch issued June 24 at 11:58AM CDT until June 27 at 1:00PM CDT by NWS Lincoln IL
Effective: Wed June 24, 2026, 11:58 AM
Expires: Thu June 25, 2026, 5:30 AM
Wet antecedent conditions from recent active weather means that it will not take much additional rainfall for flooding to occur, especially in low lying areas. Current forecast guidance exhibits a high (greater than 70%) probability of exceeding 2 inches of rainfall within the watch area. * WHAT...Flooding caused by excessive rainfall is possible. * WHERE...Portions of central, east central, and southeast Illinois, including the following counties, in central Illinois, Christian and Shelby. In east central Illinois, Clark, Coles, Cumberland and Moultrie. In southeast Illinois, Clay, Crawford, Effingham, Jasper, Lawrence and Richland. * WHEN...From Thursday afternoon through Saturday afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - http://www.weather.gov/safety/flood
You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.
Weather Forecast
Air Quality
Nitrogen Dioxide: 7.75 μg/m3
Sulphur Dioxide: 1.49 μg/m3
Ozone: 62.92 μg/m3
Astronomical
Sun Transit: 1:01 PM
Sunset: 8:31 PM
Daylight: 14 hrs 59 mins
Moon Transit: 9:08 PM
Moonset: 1:40 AM
Moon Phase: First Quarter
Moon Illumination: 71.7%
Best Times for Fishing or Hunting
Major Periods
8:19 AM - 10:49 AM8:38 PM - 11:08 PM
Minor Periods
3:34 PM - 5:04 PM1:10 AM - 2:40 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 8.78 μg/m3
Sulphur Dioxide: 0.94 μg/m3
Ozone: 53.42 μg/m3
Astronomical
Sun Transit: 1:01 PM
Sunset: 8:31 PM
Daylight: 14 hrs 59 mins
Moon Transit: 9:54 PM
Moonset: 2:07 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 81.2%
Best Times for Fishing or Hunting
Major Periods
9:04 AM - 11:34 AM9:24 PM - 11:54 PM
Minor Periods
4:37 PM - 6:07 PM1:37 AM - 3:07 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 11.98 μg/m3
Sulphur Dioxide: 0.78 μg/m3
Ozone: 40.25 μg/m3
Astronomical
Sun Transit: 1:01 PM
Sunset: 8:31 PM
Daylight: 14 hrs 58 mins
Moon Transit: 10:43 PM
Moonset: 2:38 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 89.2%
Best Times for Fishing or Hunting
Major Periods
9:51 AM - 12:21 AM12:00 AM - 12:00 AM
Minor Periods
5:39 PM - 7:09 PM2:08 AM - 3:38 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 7.46 μg/m3
Sulphur Dioxide: 1.04 μg/m3
Ozone: 54.33 μg/m3
Astronomical
Sun Transit: 1:01 PM
Sunset: 8:31 PM
Daylight: 14 hrs 58 mins
Moon Transit: 11:33 PM
Moonset: 3:14 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 95.2%
Best Times for Fishing or Hunting
Major Periods
10:41 AM - 1:11 PM12:00 AM - 12:00 AM
Minor Periods
6:37 PM - 8:07 PM2:44 AM - 4:14 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 8.18 μg/m3
Sulphur Dioxide: 0.99 μg/m3
Ozone: 44 μg/m3
Astronomical
Sun Transit: 1:02 PM
Sunset: 8:31 PM
Daylight: 14 hrs 58 mins
Moon Transit: 12:00 AM
Moonset: 3:58 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 98.8%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM11:32 AM - 2:02 PM
Minor Periods
7:31 PM - 9:01 PM3:28 AM - 4:58 AM
Action Rating: 2 out of 5