Weather Alert
Chatham Weather Warning NWS WEATHER ALERT FOR THE CHATHAM, IL AREA - Issued: 229 PM CDT Tue Sep 15 2026 Chatham Weather Warning

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Chatham, IL Weather - Hour by Hour Forecast

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Chatham, IL Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Clouds. Temperature is 77°F25°C, dew point 73°F23°C, humidity 87%. Wind direction is NW at 3 mph5 km/h with visibility of 10 mi16 km. Barometric pressure is 30.09 in1019 mb.
Tonight - Showers likely and a chance of thunderstorms. Lows in the mid 60s. North winds 5 to 10 mph. Chance of precipitation 70%... Full Forecast
Wednesday - Mostly cloudy. A slight chance of showers and thunderstorms. Highs in the lower 70s. Northeast winds 5 to 10 mph. Chance of precip.. Full Forecast

Chatham Hourly Weather

24 Hour Forecast Scroll
Tue, Sep 15
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Tue, Sep 15
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Chatham, IL Hourly Weather - Cloudy - 8:00 PM Chatham, IL Hourly Weather - Cloudy - 9:00 PM Chatham, IL Hourly Weather - Cloudy - 10:00 PM Chatham, IL Hourly Weather - Cloudy - 11:00 PM Chatham, IL Hourly Weather - Cloudy - 12:00 AM Chatham, IL Hourly Weather - Cloudy - 1:00 AM Chatham, IL Hourly Weather - Cloudy - 2:00 AM Chatham, IL Hourly Weather - Cloudy - 3:00 AM Chatham, IL Hourly Weather - Cloudy - 4:00 AM Chatham, IL Hourly Weather - Cloudy - 5:00 AM Chatham, IL Hourly Weather - Cloudy - 6:00 AM Chatham, IL Hourly Weather - Cloudy - 7:00 AM Chatham, IL Hourly Weather - Cloudy - 8:00 AM Chatham, IL Hourly Weather - Cloudy - 9:00 AM Chatham, IL Hourly Weather - Cloudy - 10:00 AM Chatham, IL Hourly Weather - Cloudy - 11:00 AM Chatham, IL Hourly Weather - Cloudy - 12:00 PM Chatham, IL Hourly Weather - Cloudy - 1:00 PM Chatham, IL Hourly Weather - Cloudy - 2:00 PM Chatham, IL Hourly Weather - Cloudy - 3:00 PM Chatham, IL Hourly Weather - Cloudy - 4:00 PM Chatham, IL Hourly Weather - Cloudy - 5:00 PM Chatham, IL Hourly Weather - Cloudy - 6:00 PM Chatham, IL Hourly Weather - Cloudy - 7:00 PM
Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy
67°F19°C 67°F19°C 66°F19°C 66°F19°C 66°F19°C 66°F19°C 66°F19°C 67°F19°C 67°F19°C 67°F19°C 67°F19°C 67°F19°C 68°F20°C 69°F21°C 70°F21°C 71°F22°C 71°F22°C 72°F22°C 73°F23°C 73°F23°C 74°F23°C 73°F23°C 72°F22°C 71°F22°C
Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain Rain
26% 26% 26% 26% 26% 26% 60% 60% 60% 60% 60% 60% 37% 37% 37% 37% 37% 37% 26% 26% 26% 26% 26% 26%
64°F18°C 63°F17°C 63°F17°C 63°F17°C 64°F18°C 64°F18°C 64°F18°C 65°F18°C 65°F18°C 65°F18°C 65°F18°C 65°F18°C 65°F18°C 66°F19°C 66°F19°C 66°F19°C 67°F19°C 67°F19°C 67°F19°C 67°F19°C 67°F19°C 67°F19°C 66°F19°C 66°F19°C
90% 87% 90% 90% 93% 93% 93% 93% 93% 93% 93% 93% 90% 90% 87% 84% 87% 84% 82% 82% 79% 82% 81% 84%
E E E E E E SSE SW NW NW WNW WNW NW NW NW NNW NNW N SSW SSE ENE NE NE NE
7 mph 5 mph 5 mph 5 mph 3 mph 3 mph 3 mph 3 mph 3 mph 3 mph 2 mph 2 mph 2 mph 3 mph 3 mph 3 mph 5 mph 5 mph 5 mph 6 mph 6 mph 6 mph 6 mph 6 mph
10 mi16 km 10 mi16 km 10 mi16 km 6 mi10 km 6 mi10 km 5 mi8 km 5 mi8 km 5 mi8 km 5 mi8 km 5 mi8 km 5 mi8 km 5 mi8 km 6 mi10 km 6 mi10 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km
Hour (CDT)
Weather
Clouds
Temperature
Precip. Type
POP
Dewpoint
Humidity
Wind Direction
Wind Speed
Visibility
POP = Probability of Precipitation. ** Indicates missing data/values from KMDW model statistics.

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Prob Precip % = Probability of Precipitation.

Chatham 36 Hour Forecast

POP = Probability of Precipitation. ** Indicates missing data/values from model statistics.

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