Weather Alert
Chambersburg Weather Warning NWS WEATHER ALERT FOR THE CHAMBERSBURG, IL AREA - FLOOD WARNING Issued: 921 PM CDT Sun Sep 20 2026 Chambersburg Weather Warning

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Chambersburg, IL Weather - Hour by Hour Forecast

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Chambersburg, IL Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Overcast. Temperature is 67°F19°C, dew point 67°F19°C, humidity 100%. Wind direction is NE at 8 mph13 km/h with visibility of 10.00 mi16 km. Barometric pressure is 29.97 in1015 mb.
Tonight - Cloudy with a chance of showers and thunderstorms. Patchy fog after midnight. Lows in the lower 60s. Northeast winds 5 to 10 mph w.. Full Forecast
Monday - Cloudy. Patchy fog in the morning. A chance of showers with a slight chance of thunderstorms in the morning, then a slight chance .. Full Forecast

Chambersburg Hourly Weather

24 Hour Forecast Scroll
Sun, Sep 20
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Chambersburg, IL Hourly Weather - Cloudy - 10:00 PM Chambersburg, IL Hourly Weather - Cloudy - 11:00 PM Chambersburg, IL Hourly Weather - Cloudy - 12:00 AM Chambersburg, IL Hourly Weather - Cloudy - 1:00 AM Chambersburg, IL Hourly Weather - Cloudy - 2:00 AM Chambersburg, IL Hourly Weather - Cloudy - 3:00 AM Chambersburg, IL Hourly Weather - Cloudy - 4:00 AM Chambersburg, IL Hourly Weather - Cloudy - 5:00 AM Chambersburg, IL Hourly Weather - Cloudy - 6:00 AM Chambersburg, IL Hourly Weather - Cloudy - 7:00 AM Chambersburg, IL Hourly Weather - Cloudy - 8:00 AM Chambersburg, IL Hourly Weather - Cloudy - 9:00 AM Chambersburg, IL Hourly Weather - Cloudy - 10:00 AM Chambersburg, IL Hourly Weather - Cloudy - 11:00 AM Chambersburg, IL Hourly Weather - Cloudy - 12:00 PM Chambersburg, IL Hourly Weather - Cloudy - 1:00 PM Chambersburg, IL Hourly Weather - Cloudy - 2:00 PM Chambersburg, IL Hourly Weather - Cloudy - 3:00 PM Chambersburg, IL Hourly Weather - Cloudy - 4:00 PM Chambersburg, IL Hourly Weather - Cloudy - 5:00 PM Chambersburg, IL Hourly Weather - Cloudy - 6:00 PM Chambersburg, IL Hourly Weather - Cloudy - 7:00 PM Chambersburg, IL Hourly Weather - Cloudy - 8:00 PM Chambersburg, IL Hourly Weather - Mostly Cloudy - 9:00 PM
Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Mostly Cloudy
59°F15°C 59°F15°C 58°F14°C 58°F14°C 57°F14°C 57°F14°C 56°F13°C 56°F13°C 56°F13°C 56°F13°C 57°F14°C 59°F15°C 60°F16°C 61°F16°C 63°F17°C 64°F18°C 65°F18°C 66°F19°C 67°F19°C 66°F19°C 64°F18°C 63°F17°C 61°F16°C 58°F14°C
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8% 8% 8% 8% 10% 10% 10% 10% 10% 10% 13% 13% 13% 13% 13% 13% 15% 15% 15% 15% 15% 15% 6% 6%
59°F15°C 59°F15°C 58°F14°C 58°F14°C 57°F14°C 57°F14°C 56°F13°C 56°F13°C 55°F13°C 55°F13°C 55°F13°C 56°F13°C 56°F13°C 55°F13°C 55°F13°C 54°F12°C 53°F12°C 53°F12°C 52°F11°C 52°F11°C 51°F11°C 51°F11°C 51°F11°C 52°F11°C
100% 100% 100% 100% 100% 100% 100% 100% 96% 96% 93% 90% 87% 81% 75% 70% 65% 63% 59% 61% 63% 65% 70% 80%
NNE NNE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NNE NNE NNE N
7 mph 7 mph 6 mph 6 mph 6 mph 6 mph 6 mph 6 mph 6 mph 6 mph 6 mph 10 mph 10 mph 10 mph 9 mph 9 mph 9 mph 10 mph 10 mph 10 mph 8 mph 8 mph 8 mph 5 mph
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 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 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km
Hour (CDT)
Weather
Clouds
Temperature
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Dewpoint
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POP = Probability of Precipitation. ** Indicates missing data/values from KIJX model statistics.

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Prob Precip % = Probability of Precipitation.

Chambersburg 36 Hour Forecast

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

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