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McHenry IL Weather - Overcast - 73°F
Overcast
73°F
Updated 3:47 am
Feels Like 75°F
Humidity 100%
Wind WSW 6 mph
Barometer  29.91 in
Dew Point 73°F
McHenry IL Weather - Overcast - 23°C
Overcast
23°C
Updated 3:47 am
Feels Like 24°C
Humidity 100%
Wind WSW 10 km/h
Barometer  101.3 kPa
Dew Point 23°C
McHenry, IL Weather and Current Conditionsmchenry il weather forecast

McHenry, IL Weather Forecast

McHenry Illinois WeatherMcHenry, Illinois Weather Weather Forecast
14 day API McHenry, IL weather forecast. Note. Our 7-day weather forecast for McHenry, Illinois is our most reliable and accurate forecast. This model should only be used as a likely scenario. Forecasting more than 7 days is difficult.
McHenry, IL Weather Forecast Dated: 347 AM Fri Sep 04 2026
Expect a very warm period with a mix of sun and clouds and occasional showers over the coming period. generally humid conditions and no major pressure swings will dominate. Isolated storms at times.

Friday, September 4, 2026

Mid-Morning
McHenry Weather - 2026-09-04 - Morning - Scattered Showers
79°F 26°C
Scattered Showers
Mid-Afternoon
McHenry Weather - 2026-09-04 - Afternoon - Nearby Thunderstorms
89°F 32°C
Nearby Thunderstorms
Early-Evening
McHenry Weather - 2026-09-04 - Evening - Nearby Thunderstorms
79°F 26°C
Nearby Thunderstorms
Warm and summery around 89°F 32°C (feels like 95°F 35°C), periods of heavy rain and gusty conditions, with steady humidity and steady pressure. A stray shower or storm late in the day.

Saturday, September 5, 2026

Mid-Morning
McHenry Weather - 2026-09-05 - Morning - Scattered Showers
72°F 22°C
Scattered Showers
Mid-Afternoon
McHenry Weather - 2026-09-05 - Afternoon - Scattered Showers
78°F 26°C
Scattered Showers
Early-Evening
McHenry Weather - 2026-09-05 - Evening - Sunny
72°F 22°C
Sunny
Comfortable with temperatures reaching 78°F 26°C, scattered downpours possible, with steady humidity and steady pressure. Winds turning from the ENE to the NE at 10 mph 15 km/h. Gusts up to 20 mph 31 km/h.

Sunday, September 6, 2026

Mid-Morning
McHenry Weather - 2026-09-06 - Morning - Cloudy
69°F 20°C
Cloudy
Mid-Afternoon
McHenry Weather - 2026-09-06 - Afternoon - Overcast
73°F 23°C
Overcast
Early-Evening
McHenry Weather - 2026-09-06 - Evening - Overcast
67°F 19°C
Overcast
Enjoyable around 73°F 23°C, cloudy in the morning, becoming overcast through the afternoon and evening, with steady humidity and steady pressure. Winds switching from the E to the NE at 8 mph 12 km/h.

Monday, September 7, 2026

Mid-Morning
McHenry Weather - 2026-09-07 - Morning - Sunny
66°F 19°C
Sunny
Mid-Afternoon
McHenry Weather - 2026-09-07 - Afternoon - Overcast
74°F 23°C
Overcast
Early-Evening
McHenry Weather - 2026-09-07 - Evening - Overcast
68°F 20°C
Overcast
Mild temperatures up to 74°F 23°C, sunny in the morning, becoming overcast through the afternoon and evening, with steady humidity and steady pressure. Winds moving from the SE to the E at 7 mph 12 km/h.

Tuesday, September 8, 2026

Mid-Morning
McHenry Weather - 2026-09-08 - Morning - Overcast
68°F 20°C
Overcast
Mid-Afternoon
McHenry Weather - 2026-09-08 - Afternoon - Overcast
77°F 25°C
Overcast
Early-Evening
McHenry Weather - 2026-09-08 - Evening - Partly Cloudy
78°F 26°C
Partly Cloudy
Mild with a high of 77°F 25°C, overcast in the morning, cloudy in the afternoon, and partly cloudy this evening, with steady humidity and barometric pressure falling. Winds swinging from the SE to the S at 12 mph 20 km/h. Gusts up to 31 mph 49 km/h.

Wednesday, September 9, 2026

Mid-Morning
McHenry Weather - 2026-09-09 - Morning - Overcast
80°F 27°C
Overcast
Mid-Afternoon
McHenry Weather - 2026-09-09 - Afternoon - Sunny
88°F 31°C
Sunny
Early-Evening
McHenry Weather - 2026-09-09 - Evening - Nearby Thunderstorms
84°F 29°C
Nearby Thunderstorms
Very warm near 88°F 31°C, though humidity makes it feel like 92°F 33°C, heavy thunderstorms conditions at times, with increasing humidity and steady pressure. Winds shifting from the NW to the WNW at 5 mph 8 km/h.

Thursday, September 10, 2026

Mid-Morning
McHenry Weather - 2026-09-10 - Morning - Scattered Showers
75°F 24°C
Scattered Showers
Mid-Afternoon
McHenry Weather - 2026-09-10 - Afternoon - Overcast
76°F 24°C
Overcast
Early-Evening
McHenry Weather - 2026-09-10 - Evening - Scattered Showers
68°F 20°C
Scattered Showers
Comfortable with temperatures reaching 76°F 24°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds NE at 10 mph 15 km/h.

Friday, September 11, 2026

Mid-Morning
McHenry Weather - 2026-09-11 - Morning - Sunny
74°F 24°C
Sunny
Mid-Afternoon
McHenry Weather - 2026-09-11 - Afternoon - Scattered Showers
86°F 30°C
Scattered Showers
Early-Evening
McHenry Weather - 2026-09-11 - Evening - Sunny
83°F 28°C
Sunny
Quite warm reaching 86°F 30°C, feeling like 92°F 33°C during peak afternoon, scattered downpours possible, with steady humidity and barometric pressure falling. Winds out of the SSE at 8 mph 13 km/h.

Saturday, September 12, 2026

Mid-Morning
McHenry Weather - 2026-09-12 - Morning - Sunny
80°F 27°C
Sunny
Mid-Afternoon
McHenry Weather - 2026-09-12 - Afternoon - Sunny
89°F 31°C
Sunny
Early-Evening
McHenry Weather - 2026-09-12 - Evening - Nearby Thunderstorms
80°F 27°C
Nearby Thunderstorms
Very warm near 89°F 31°C, though humidity makes it feel like 94°F 34°C, heavy thunderstorms conditions at times, with steady humidity and steady pressure. Winds moving from the SSW to the ESE at 8 mph 14 km/h.

Sunday, September 13, 2026

Mid-Morning
McHenry Weather - 2026-09-13 - Morning - Sunny
78°F 25°C
Sunny
Mid-Afternoon
McHenry Weather - 2026-09-13 - Afternoon - Sunny
88°F 31°C
Sunny
Early-Evening
McHenry Weather - 2026-09-13 - Evening - Nearby Thunderstorms
73°F 23°C
Nearby Thunderstorms
Warm and summery around 88°F 31°C (feels like 92°F 34°C), periods of heavy thunderstorms, with increasing humidity and steady pressure. Winds swinging from the SSW to the WSW at 16 mph 25 km/h. Gusts up to 31 mph 50 km/h.

Monday, September 14, 2026

Mid-Morning
McHenry Weather - 2026-09-14 - Morning - Sunny
61°F 16°C
Sunny
Mid-Afternoon
McHenry Weather - 2026-09-14 - Afternoon - Sunny
73°F 23°C
Sunny
Early-Evening
McHenry Weather - 2026-09-14 - Evening - Sunny
67°F 20°C
Sunny
Pleasant near 73°F 23°C, sunny throughout the day, with steady humidity and steady pressure. Winds shifting from the WNW to the SSW at 6 mph 10 km/h.

Tuesday, September 15, 2026

Mid-Morning
McHenry Weather - 2026-09-15 - Morning - Overcast
65°F 18°C
Overcast
Mid-Afternoon
McHenry Weather - 2026-09-15 - Afternoon - Sunny
80°F 27°C
Sunny
Early-Evening
McHenry Weather - 2026-09-15 - Evening - Scattered Showers
80°F 27°C
Scattered Showers
Very warm near 80°F 27°C, though humidity makes it feel like 83°F 29°C, locally heavy downpours at times, with increasing humidity and barometric pressure falling. Winds blowing from the SSW at 17 mph 27 km/h. Gusts up to 29 mph 47 km/h.

Wednesday, September 16, 2026

Mid-Morning
McHenry Weather - 2026-09-16 - Morning - Overcast
77°F 25°C
Overcast
Mid-Afternoon
McHenry Weather - 2026-09-16 - Afternoon - Nearby Thunderstorms
88°F 31°C
Nearby Thunderstorms
Early-Evening
McHenry Weather - 2026-09-16 - Evening - Nearby Thunderstorms
85°F 30°C
Nearby Thunderstorms
Warm and summery around 88°F 31°C (feels like 94°F 34°C), periods of heavy thunderstorms, with lower humidity and steady pressure. Winds switching from the SSW to the S at 11 mph 18 km/h. Gusts up to 29 mph 46 km/h.

Thursday, September 17, 2026

Mid-Morning
McHenry Weather - 2026-09-17 - Morning - Overcast
76°F 24°C
Overcast
Mid-Afternoon
McHenry Weather - 2026-09-17 - Afternoon - Overcast
83°F 28°C
Overcast
Early-Evening
McHenry Weather - 2026-09-17 - Evening - Overcast
70°F 21°C
Overcast
Quite warm reaching 83°F 28°C, feeling like 86°F 30°C during peak afternoon, partly cloudy in the morning, overcast in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds moving from the SW to the NNW at 9 mph 15 km/h.

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Weather by the Numbers

Fri, 4th
McHenry IL Weather - Friday, Sep 4, 2026 - Thundery Outbreaks In Nearby
Hi: 92°F 34°C
Lo: 73°F 23°C
Sunrise 06:21 AM
Sunset 07:22 PM
Wind WSW 10 mph16 km/h
Dew Point 69°F21°C
uv Index 3
Barometric Pressure 29.88 in1012 mb
POP 18% *
Humidity 61%
Sat, 5th
McHenry IL Weather - Saturday, Sep 5, 2026 - Sunny
Hi: 81°F 27°C
Lo: 68°F 20°C
Sunrise 06:22 AM
Sunset 07:20 PM
Wind ENE 6 mph10 km/h
Dew Point 69°F20°C
uv Index 7
Barometric Pressure 29.91 in1013 mb
POP 6% *
Humidity 69%
Sun, 6th
McHenry IL Weather - Sunday, Sep 6, 2026 - Sunny
Hi: 74°F 23°C
Lo: 65°F 18°C
Sunrise 06:23 AM
Sunset 07:19 PM
Wind ENE 11 mph18 km/h
Dew Point 59°F15°C
uv Index 7
Barometric Pressure 30.09 in1019 mb
POP 4% *
Humidity 61%
Mon, 7th
McHenry IL Weather - Monday, Sep 7, 2026 - Overcast
Hi: 74°F 23°C
Lo: 64°F 18°C
Sunrise 06:24 AM
Sunset 07:17 PM
Wind E 7 mph11 km/h
Dew Point 57°F14°C
uv Index 5
Barometric Pressure 30.15 in1021 mb
POP 13% *
Humidity 56%
Tue, 8th
McHenry IL Weather - Tuesday, Sep 8, 2026 - Partly Cloudy
Hi: 79°F 26°C
Lo: 64°F 18°C
Sunrise 06:26 AM
Sunset 07:15 PM
Wind SSE 11 mph18 km/h
Dew Point 61°F16°C
uv Index 6
Barometric Pressure 30.06 in1018 mb
POP 6% *
Humidity 57%
Wed, 9th
McHenry IL Weather - Wednesday, Sep 9, 2026 - Patchy Rain Nearby
Hi: 88°F 31°C
Lo: 74°F 24°C
Sunrise 06:27 AM
Sunset 07:13 PM
Wind SW 6 mph9 km/h
Dew Point 66°F19°C
uv Index 6
Barometric Pressure 29.94 in1014 mb
POP 4% *
Humidity 52%
Thu, 10th
McHenry IL Weather - Thursday, Sep 10, 2026 - Patchy Rain Nearby
Hi: 77°F 25°C
Lo: 65°F 18°C
Sunrise 06:28 AM
Sunset 07:11 PM
Wind ENE 9 mph15 km/h
Dew Point 66°F19°C
uv Index 5
Barometric Pressure 30.06 in1018 mb
POP 17% *
Humidity 71%
Fri, 11th
McHenry IL Weather - Friday, Sep 11, 2026 - Overcast
Hi: 87°F 31°C
Lo: 66°F 19°C
Sunrise 06:29 AM
Sunset 07:10 PM
Wind SE 6 mph10 km/h
Dew Point 69°F21°C
uv Index 6
Barometric Pressure 29.91 in1013 mb
POP 12% *
Humidity 66%
Sat, 12th
McHenry IL Weather - Saturday, Sep 12, 2026 - Sunny
Hi: 89°F 32°C
Lo: 74°F 23°C
Sunrise 06:30 AM
Sunset 07:08 PM
Wind SW 12 mph19 km/h
Dew Point 66°F19°C
uv Index 7
Barometric Pressure 29.88 in1012 mb
POP 2% *
Humidity 53%
Sun, 13th
McHenry IL Weather - Sunday, Sep 13, 2026 - Patchy Rain Nearby
Hi: 89°F 31°C
Lo: 68°F 20°C
Sunrise 06:31 AM
Sunset 07:06 PM
Wind SSW 17 mph27 km/h
Dew Point 67°F19°C
uv Index 6
Barometric Pressure 29.83 in1010 mb
POP 5% *
Humidity 56%
Mon, 14th
McHenry IL Weather - Monday, Sep 14, 2026 - Sunny
Hi: 73°F 23°C
Lo: 55°F 13°C
Sunrise 06:32 AM
Sunset 07:04 PM
Wind WNW 8 mph13 km/h
Dew Point 47°F8°C
uv Index 6
Barometric Pressure 30.06 in1018 mb
POP 1% *
Humidity 45%
Tue, 15th
McHenry IL Weather - Tuesday, Sep 15, 2026 - Sunny
Hi: 81°F 27°C
Lo: 60°F 15°C
Sunrise 06:33 AM
Sunset 07:03 PM
Wind S 17 mph27 km/h
Dew Point 61°F16°C
uv Index 6
Barometric Pressure 29.97 in1015 mb
POP 4% *
Humidity 64%
Wed, 16th
McHenry IL Weather - Wednesday, Sep 16, 2026 - Cloudy
Hi: 89°F 32°C
Lo: 73°F 23°C
Sunrise 06:34 AM
Sunset 07:01 PM
Wind SSW 17 mph28 km/h
Dew Point 69°F20°C
uv Index 6
Barometric Pressure 29.97 in1015 mb
POP 13% *
Humidity 60%
Thu, 17th
McHenry IL Weather - Thursday, Sep 17, 2026 - Sunny
Hi: 83°F 28°C
Lo: 63°F 17°C
Sunrise 06:35 AM
Sunset 06:59 PM
Wind WSW 14 mph23 km/h
Dew Point 68°F20°C
uv Index 7
Barometric Pressure 30.06 in1018 mb
POP 10% *
Humidity 64%
* POP = Probability of Precipitation. Data for 12:00 PM.