Weather Alert
Mercer Weather Warning NWS WEATHER ALERT FOR THE MERCER, IL AREA - Issued: 334 AM CDT Sat Sep 26 2026 Mercer Weather Warning

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Mercer, IL Weather - Hour by Hour Forecast

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Mercer, IL Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Mostly Cloudy. Temperature is 62°F17°C, dew point 58°F14°C, humidity 86%. Wind direction is N at 0 mph0 km/h with visibility of 10 mi16 km. Barometric pressure is 30.08 in1018 mb.
Tonight - Mostly cloudy. A slight chance of showers after midnight. Lows in the upper 50s. East winds around 5 mph. Chance of rain 20 percen.. Full Forecast
Sunday - Mostly cloudy with a slight chance of showers in the morning, then partly sunny in the afternoon. Highs in the lower 70s. East win.. Full Forecast

Mercer Hourly Weather

24 Hour Forecast Scroll
Sat, Sep 26
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Mercer, IL Hourly Weather - Mostly Cloudy - 8:00 PM Mercer, IL Hourly Weather - Partly Cloudy - 9:00 PM Mercer, IL Hourly Weather - Partly Cloudy - 10:00 PM Mercer, IL Hourly Weather - Partly Cloudy - 11:00 PM Mercer, IL Hourly Weather - Mostly Clear - 12:00 AM Mercer, IL Hourly Weather - Mostly Clear - 1:00 AM Mercer, IL Hourly Weather - Mostly Clear - 2:00 AM Mercer, IL Hourly Weather - Mostly Clear - 3:00 AM Mercer, IL Hourly Weather - Mostly Clear - 4:00 AM Mercer, IL Hourly Weather - Mostly Clear - 5:00 AM Mercer, IL Hourly Weather - Clear - 6:00 AM Mercer, IL Hourly Weather - Clear - 7:00 AM Mercer, IL Hourly Weather - Clear - 8:00 AM Mercer, IL Hourly Weather - Clear - 9:00 AM Mercer, IL Hourly Weather - Clear - 10:00 AM Mercer, IL Hourly Weather - Clear - 11:00 AM Mercer, IL Hourly Weather - Clear - 12:00 PM Mercer, IL Hourly Weather - Clear - 1:00 PM Mercer, IL Hourly Weather - Clear - 2:00 PM Mercer, IL Hourly Weather - Clear - 3:00 PM Mercer, IL Hourly Weather - Clear - 4:00 PM Mercer, IL Hourly Weather - Clear - 5:00 PM Mercer, IL Hourly Weather - Clear - 6:00 PM Mercer, IL Hourly Weather - Clear - 7:00 PM
Mostly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Mostly Clear Mostly Clear Mostly Clear Mostly Clear Mostly Clear Mostly Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear Clear
63°F17°C 60°F16°C 58°F14°C 57°F14°C 55°F13°C 54°F12°C 54°F12°C 53°F12°C 53°F12°C 53°F12°C 52°F11°C 52°F11°C 57°F14°C 61°F16°C 66°F19°C 69°F21°C 72°F22°C 75°F24°C 75°F24°C 76°F24°C 76°F24°C 73°F23°C 71°F22°C 68°F20°C
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8% 8% 8% 8% 8% 8% 6% 6% 6% 6% 6% 6% 3% 3% 3% 3% 3% 3% 3% 3% 3% 3% 3% 3%
51°F11°C 51°F11°C 51°F11°C 50°F10°C 50°F10°C 49°F9°C 49°F9°C 48°F9°C 48°F9°C 48°F9°C 48°F9°C 48°F9°C 49°F9°C 50°F10°C 51°F11°C 50°F10°C 50°F10°C 49°F9°C 48°F9°C 48°F9°C 47°F8°C 48°F9°C 48°F9°C 49°F9°C
65% 72% 77% 77% 83% 83% 83% 83% 83% 83% 86% 86% 75% 67% 58% 51% 46% 40% 38% 37% 36% 41% 44% 51%
ENE ENE ENE ENE ENE ENE ENE ENE ENE ENE ENE E E E ESE ESE SE SE SE SE SE SE SE ESE
3 mph 2 mph 2 mph 2 mph 2 mph 2 mph 2 mph 1 mph 1 mph 1 mph 1 mph 1 mph 1 mph 3 mph 3 mph 3 mph 5 mph 5 mph 5 mph 5 mph 5 mph 5 mph 3 mph 3 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
Precip. Type
POP
Dewpoint
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POP = Probability of Precipitation. ** Indicates missing data/values from KMLI model statistics.

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Prob Precip % = Probability of Precipitation.

Mercer 36 Hour Forecast

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

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