Weather Alert
McHenry Weather Warning NWS WEATHER ALERT FOR THE MCHENRY, IL AREA - Issued: 319 PM CDT Fri Sep 4 2026 McHenry Weather Warning

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McHenry, IL Weather - Hour by Hour Forecast

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McHenry, IL Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Clear. Temperature is 78°F26°C, dew point 72°F22°C, humidity 81%. Wind direction is NE at 3 mph5 km/h with visibility of 10 mi16 km. Barometric pressure is 29.89 in1012 mb.
Today - Partly cloudy. A slight chance of showers and thunderstorms early in the afternoon. Highs around 90. South winds 10 to 15 mph. Cha.. Full Forecast
Tonight - Partly cloudy. A slight chance of showers and thunderstorms until early morning. Patchy fog late. Humid with lows around 70. North.. Full Forecast

McHenry Hourly Weather

24 Hour Forecast Scroll
Fri, Sep 04
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McHenry, IL Hourly Weather - Mostly Clear - 6:00 PM McHenry, IL Hourly Weather - Mostly Clear - 7:00 PM McHenry, IL Hourly Weather - Mostly Clear - 8:00 PM McHenry, IL Hourly Weather - Partly Cloudy - 9:00 PM McHenry, IL Hourly Weather - Partly Cloudy - 10:00 PM McHenry, IL Hourly Weather - Partly Cloudy - 11:00 PM McHenry, IL Hourly Weather - Mostly Cloudy - 12:00 AM McHenry, IL Hourly Weather - Mostly Cloudy - 1:00 AM McHenry, IL Hourly Weather - Mostly Cloudy - 2:00 AM McHenry, IL Hourly Weather - Cloudy - 3:00 AM McHenry, IL Hourly Weather - Cloudy - 4:00 AM McHenry, IL Hourly Weather - Cloudy - 5:00 AM McHenry, IL Hourly Weather - Cloudy - 6:00 AM McHenry, IL Hourly Weather - Cloudy - 7:00 AM McHenry, IL Hourly Weather - Cloudy - 8:00 AM McHenry, IL Hourly Weather - Cloudy - 9:00 AM McHenry, IL Hourly Weather - Cloudy - 10:00 AM McHenry, IL Hourly Weather - Cloudy - 11:00 AM McHenry, IL Hourly Weather - Cloudy - 12:00 PM McHenry, IL Hourly Weather - Cloudy - 1:00 PM McHenry, IL Hourly Weather - Cloudy - 2:00 PM McHenry, IL Hourly Weather - Mostly Cloudy - 3:00 PM McHenry, IL Hourly Weather - Mostly Cloudy - 4:00 PM McHenry, IL Hourly Weather - Mostly Cloudy - 5:00 PM
Mostly Clear Mostly Clear Mostly Clear Partly Cloudy Partly Cloudy Partly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy
84°F29°C 82°F28°C 80°F27°C 77°F25°C 75°F24°C 74°F23°C 73°F23°C 72°F22°C 72°F22°C 71°F22°C 71°F22°C 71°F22°C 70°F21°C 70°F21°C 71°F22°C 72°F22°C 73°F23°C 73°F23°C 74°F23°C 74°F23°C 74°F23°C 73°F23°C 73°F23°C 72°F22°C
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15% 15% 18% 18% 18% 18% 18% 18% 35% 35% 35% 35% 35% 35% 7% 7% 7% 7% 7% 7% 0% 0% 0% 0%
72°F22°C 72°F22°C 72°F22°C 71°F22°C 71°F22°C 71°F22°C 71°F22°C 71°F22°C 71°F22°C 70°F21°C 70°F21°C 70°F21°C 69°F21°C 69°F21°C 70°F21°C 70°F21°C 71°F22°C 70°F21°C 70°F21°C 69°F21°C 68°F20°C 68°F20°C 67°F19°C 66°F19°C
67% 72% 77% 82% 87% 90% 93% 97% 97% 97% 97% 97% 97% 97% 97% 93% 93% 90% 87% 84% 82% 84% 82% 81%
SE E ENE NE NE NE NNE NNE NNE N N N NNE NNE NE NE NE NE ENE ENE ENE NE NE NE
2 mph 2 mph 2 mph 1 mph 1 mph 1 mph 2 mph 2 mph 2 mph 3 mph 3 mph 3 mph 4 mph 4 mph 4 mph 8 mph 8 mph 8 mph 9 mph 9 mph 9 mph 8 mph 8 mph 8 mph
10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 6 mi10 km 6 mi10 km 5 mi8 km 5 mi8 km 3 mi5 km 3 mi5 km 3 mi5 km .75 mi1 km .75 mi1 km 3 mi5 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
Hour (CDT)
Weather
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Temperature
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POP
Dewpoint
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POP = Probability of Precipitation. ** Indicates missing data/values from KUGN model statistics.

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Prob Precip % = Probability of Precipitation.

McHenry 36 Hour Forecast

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

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