Jack Lake, IL 14 Day Weather

Feedback E-mail the Weather

Quick Weather Clicks

Jack Lake, IL Weather - 14-Day Weather Forecast

Current Conditions

Settings
Jack Lake IL Weather - Overcast - 74°F
Overcast
74°F
Updated 5:42 pm
Feels Like 82°F
Humidity 95%
Wind N 3 mph
Barometer  29.98 in
Dew Point 73°F
Jack Lake IL Weather - Overcast - 24°C
Overcast
24°C
Updated 5:42 pm
Feels Like 28°C
Humidity 95%
Wind N 5 km/h
Barometer  101.5 kPa
Dew Point 23°C
Jack Lake, IL Weather and Current Conditionsjack lake il weather forecast

Jack Lake, IL Weather Forecast

Jack Lake Illinois WeatherJack Lake, Illinois Weather Weather Forecast
14 day API Jack Lake weather forecast. Note. Our 7-day Jack Lake weather forecast is our most reliable and accurate forecast. This model should only be used as a likely scenario. Forecasting more than 7 days is difficult.
Jack Lake, IL Weather Forecast Dated: 542 PM Thu Sep 10 2026
Expect a very warm period with more clouds than sun and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate.

Thursday, September 10, 2026

Mid-Morning
Jack Lake Weather - 2026-09-10 - Morning - Light Rain
71°F 22°C
Light Rain
Mid-Afternoon
Jack Lake Weather - 2026-09-10 - Afternoon - Rain
78°F 25°C
Rain
Early-Evening
Jack Lake Weather - 2026-09-10 - Evening - Rain
75°F 24°C
Rain
Pleasant near 78°F 25°C, rounds of showers expected off and on all day, with lower humidity and steady pressure.

Friday, September 11, 2026

Mid-Morning
Jack Lake Weather - 2026-09-11 - Morning - Cloudy
67°F 20°C
Cloudy
Mid-Afternoon
Jack Lake Weather - 2026-09-11 - Afternoon - Sunny
81°F 27°C
Sunny
Early-Evening
Jack Lake Weather - 2026-09-11 - Evening - Sunny
77°F 25°C
Sunny
Balmy with temperatures reaching 81°F 27°C, overcast in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure falling.

Saturday, September 12, 2026

Mid-Morning
Jack Lake Weather - 2026-09-12 - Morning - Sunny
73°F 23°C
Sunny
Mid-Afternoon
Jack Lake Weather - 2026-09-12 - Afternoon - Overcast
90°F 32°C
Overcast
Early-Evening
Jack Lake Weather - 2026-09-12 - Evening - Cloudy
83°F 28°C
Cloudy
Sizzling hot with 90°F 32°C, sunny in the morning, overcast in the afternoon, and cloudy this evening, with lower humidity and steady pressure. Winds turning from the SW to the SE at 8 mph 13 km/h.

Sunday, September 13, 2026

Mid-Morning
Jack Lake Weather - 2026-09-13 - Morning - Sunny
69°F 21°C
Sunny
Mid-Afternoon
Jack Lake Weather - 2026-09-13 - Afternoon - Overcast
84°F 29°C
Overcast
Early-Evening
Jack Lake Weather - 2026-09-13 - Evening - Overcast
76°F 25°C
Overcast
Warm temperatures up to 84°F 29°C, sunny in the morning, overcast in the afternoon, and cloudy this evening, with lower humidity and steady pressure. Winds blowing from the NNE at 12 mph 19 km/h.

Monday, September 14, 2026

Mid-Morning
Jack Lake Weather - 2026-09-14 - Morning - Sunny
76°F 24°C
Sunny
Mid-Afternoon
Jack Lake Weather - 2026-09-14 - Afternoon - Sunny
97°F 36°C
Sunny
Early-Evening
Jack Lake Weather - 2026-09-14 - Evening - Overcast
91°F 33°C
Overcast
Very hot with a high of 97°F 36°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and barometric pressure falling. Winds moving from the SSW to the S at 11 mph 17 km/h. Gusts up to 25 mph 40 km/h.

Tuesday, September 15, 2026

Mid-Morning
Jack Lake Weather - 2026-09-15 - Morning - Scattered Showers
77°F 25°C
Scattered Showers
Mid-Afternoon
Jack Lake Weather - 2026-09-15 - Afternoon - Scattered Showers
85°F 29°C
Scattered Showers
Early-Evening
Jack Lake Weather - 2026-09-15 - Evening - Overcast
76°F 25°C
Overcast
Very warm near 85°F 29°C, though humidity makes it feel like 89°F 31°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds swinging from the W to the NE at 10 mph 15 km/h.

Wednesday, September 16, 2026

Mid-Morning
Jack Lake Weather - 2026-09-16 - Morning - Light Showers
61°F 16°C
Light Showers
Mid-Afternoon
Jack Lake Weather - 2026-09-16 - Afternoon - Light Showers
66°F 19°C
Light Showers
Early-Evening
Jack Lake Weather - 2026-09-16 - Evening - Scattered Showers
63°F 17°C
Scattered Showers
Comfortable at 66°F 19°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds blowing from the NE at 10 mph 16 km/h.

Thursday, September 17, 2026

Mid-Morning
Jack Lake Weather - 2026-09-17 - Morning - Overcast
63°F 17°C
Overcast
Mid-Afternoon
Jack Lake Weather - 2026-09-17 - Afternoon - Overcast
74°F 24°C
Overcast
Early-Evening
Jack Lake Weather - 2026-09-17 - Evening - Sunny
68°F 20°C
Sunny
Enjoyable around 74°F 24°C, cloudy in the morning, partly cloudy in the afternoon, and cloudy this evening, with lower humidity and steady pressure. Winds NE at 11 mph 17 km/h.

Friday, September 18, 2026

Mid-Morning
Jack Lake Weather - 2026-09-18 - Morning - Sunny
62°F 17°C
Sunny
Mid-Afternoon
Jack Lake Weather - 2026-09-18 - Afternoon - Sunny
76°F 24°C
Sunny
Early-Evening
Jack Lake Weather - 2026-09-18 - Evening - Overcast
69°F 21°C
Overcast
Mild temperatures up to 76°F 24°C, partly cloudy in the morning, cloudy in the afternoon, and overcast this evening, with lower humidity and barometric pressure falling.

Saturday, September 19, 2026

Mid-Morning
Jack Lake Weather - 2026-09-19 - Morning - Overcast
63°F 17°C
Overcast
Mid-Afternoon
Jack Lake Weather - 2026-09-19 - Afternoon - Sunny
77°F 25°C
Sunny
Early-Evening
Jack Lake Weather - 2026-09-19 - Evening - Overcast
70°F 22°C
Overcast
Mild with a high of 77°F 25°C, overcast in the morning, cloudy in the afternoon, and overcast this evening, with steady humidity and steady pressure.

Sunday, September 20, 2026

Mid-Morning
Jack Lake Weather - 2026-09-20 - Morning - Overcast
66°F 19°C
Overcast
Mid-Afternoon
Jack Lake Weather - 2026-09-20 - Afternoon - Overcast
79°F 26°C
Overcast
Early-Evening
Jack Lake Weather - 2026-09-20 - Evening - Overcast
71°F 22°C
Overcast
Pleasant near 79°F 26°C, overcast throughout the day, with steady humidity and steady pressure. Winds switching from the ENE to the E at 9 mph 14 km/h.

Monday, September 21, 2026

Mid-Morning
Jack Lake Weather - 2026-09-21 - Morning - Overcast
64°F 18°C
Overcast
Mid-Afternoon
Jack Lake Weather - 2026-09-21 - Afternoon - Overcast
74°F 24°C
Overcast
Early-Evening
Jack Lake Weather - 2026-09-21 - Evening - Cloudy
67°F 20°C
Cloudy
Comfortable with temperatures reaching 74°F 24°C, overcast in the morning, cloudy in the afternoon, and overcast this evening, with increasing humidity and steady pressure. Winds moving from the ENE to the SE at 6 mph 10 km/h.

Tuesday, September 22, 2026

Mid-Morning
Jack Lake Weather - 2026-09-22 - Morning - Fog
68°F 20°C
Fog
Mid-Afternoon
Jack Lake Weather - 2026-09-22 - Afternoon - Overcast
81°F 27°C
Overcast
Early-Evening
Jack Lake Weather - 2026-09-22 - Evening - Overcast
71°F 21°C
Overcast
Quite warm around 81°F 27°C, overcast through the afternoon, turning sunny this evening, with lower humidity and steady pressure. Winds swinging from the SW to the WNW at 8 mph 13 km/h.

Wednesday, September 23, 2026

Mid-Morning
Jack Lake Weather - 2026-09-23 - Morning - Sunny
55°F 13°C
Sunny
Mid-Afternoon
Jack Lake Weather - 2026-09-23 - Afternoon - Overcast
66°F 19°C
Overcast
Early-Evening
Jack Lake Weather - 2026-09-23 - Evening - Cloudy
61°F 16°C
Cloudy
Mildly cool near 66°F 19°C, sunny in the morning, becoming overcast through the afternoon and evening, with steady humidity and steady pressure. Winds shifting from the NNW to the NNE at 11 mph 18 km/h.

Trending Headlines

Jack Lake, IL Weather Radar Map

Use the map search tool if you want to place a location marker on the radar map...

Jack Lake, IL 7 Day Weather

National Two Day Weather Forecast


E-mail the Jack Lake Weather Forecast

Voice your opinion or tell us about page issues...

Weather by the Numbers

Thu, 10th
Jack Lake IL Weather - Thursday, Sep 10, 2026 - Moderate Rain
Hi: 79°F 26°C
Lo: 67°F 19°C
Sunrise 06:37 AM
Sunset 07:18 PM
Wind SE 4 mph6 km/h
Dew Point 69°F21°C
uv Index 2
Barometric Pressure 30.03 in1017 mb
POP 77% *
Humidity 80%
Fri, 11th
Jack Lake IL Weather - Friday, Sep 11, 2026 - Cloudy
Hi: 81°F 27°C
Lo: 63°F 17°C
Sunrise 06:38 AM
Sunset 07:16 PM
Wind SSE 6 mph9 km/h
Dew Point 62°F17°C
uv Index 4
Barometric Pressure 29.97 in1015 mb
POP 12% *
Humidity 65%
Sat, 12th
Jack Lake IL Weather - Saturday, Sep 12, 2026 - Sunny
Hi: 90°F 32°C
Lo: 68°F 20°C
Sunrise 06:39 AM
Sunset 07:14 PM
Wind SW 8 mph13 km/h
Dew Point 64°F18°C
uv Index 6
Barometric Pressure 29.88 in1012 mb
POP 2% *
Humidity 49%
Sun, 13th
Jack Lake IL Weather - Sunday, Sep 13, 2026 - Overcast
Hi: 85°F 29°C
Lo: 67°F 19°C
Sunrise 06:40 AM
Sunset 07:13 PM
Wind NNE 4 mph7 km/h
Dew Point 65°F18°C
uv Index 6
Barometric Pressure 30 in1016 mb
POP 13% *
Humidity 56%
Mon, 14th
Jack Lake IL Weather - Monday, Sep 14, 2026 - Sunny
Hi: 99°F 37°C
Lo: 67°F 20°C
Sunrise 06:41 AM
Sunset 07:11 PM
Wind SSE 9 mph14 km/h
Dew Point 66°F19°C
uv Index 6
Barometric Pressure 29.94 in1014 mb
POP 2% *
Humidity 53%
Tue, 15th
Jack Lake IL Weather - Tuesday, Sep 15, 2026 - Cloudy
Hi: 87°F 31°C
Lo: 70°F 21°C
Sunrise 06:42 AM
Sunset 07:09 PM
Wind WNW 6 mph10 km/h
Dew Point 66°F19°C
uv Index 6
Barometric Pressure 30.03 in1017 mb
POP 9% *
Humidity 56%
Wed, 16th
Jack Lake IL Weather - Wednesday, Sep 16, 2026 - Light Rain Shower
Hi: 69°F 20°C
Lo: 60°F 16°C
Sunrise 06:42 AM
Sunset 07:08 PM
Wind NE 9 mph15 km/h
Dew Point 61°F16°C
uv Index 4
Barometric Pressure 30.21 in1023 mb
POP 49% *
Humidity 87%
Thu, 17th
Jack Lake IL Weather - Thursday, Sep 17, 2026 - Partly Cloudy
Hi: 75°F 24°C
Lo: 57°F 14°C
Sunrise 06:43 AM
Sunset 07:06 PM
Wind NE 11 mph18 km/h
Dew Point 53°F11°C
uv Index 6
Barometric Pressure 30.33 in1027 mb
POP 10% *
Humidity 53%
Fri, 18th
Jack Lake IL Weather - Friday, Sep 18, 2026 - Partly Cloudy
Hi: 76°F 25°C
Lo: 55°F 13°C
Sunrise 06:44 AM
Sunset 07:04 PM
Wind E 6 mph10 km/h
Dew Point 46°F8°C
uv Index 6
Barometric Pressure 30.24 in1024 mb
POP 2% *
Humidity 40%
Sat, 19th
Jack Lake IL Weather - Saturday, Sep 19, 2026 - Overcast
Hi: 78°F 26°C
Lo: 57°F 14°C
Sunrise 06:45 AM
Sunset 07:03 PM
Wind ENE 6 mph9 km/h
Dew Point 47°F9°C
uv Index 5
Barometric Pressure 30.12 in1020 mb
POP 3% *
Humidity 41%
Sun, 20th
Jack Lake IL Weather - Sunday, Sep 20, 2026 - Overcast
Hi: 79°F 26°C
Lo: 61°F 16°C
Sunrise 06:46 AM
Sunset 07:01 PM
Wind E 8 mph12 km/h
Dew Point 50°F10°C
uv Index 5
Barometric Pressure 30.06 in1018 mb
POP 10% *
Humidity 42%
Mon, 21st
Jack Lake IL Weather - Monday, Sep 21, 2026 - Overcast
Hi: 77°F 25°C
Lo: 62°F 17°C
Sunrise 06:47 AM
Sunset 06:59 PM
Wind ENE 6 mph10 km/h
Dew Point 54°F12°C
uv Index 5
Barometric Pressure 29.88 in1012 mb
POP 12% *
Humidity 52%
Tue, 22nd
Jack Lake IL Weather - Tuesday, Sep 22, 2026 - Overcast
Hi: 81°F 27°C
Lo: 61°F 16°C
Sunrise 06:48 AM
Sunset 06:58 PM
Wind WSW 10 mph16 km/h
Dew Point 55°F13°C
uv Index 6
Barometric Pressure 29.8 in1009 mb
POP 11% *
Humidity 48%
Wed, 23rd
Jack Lake IL Weather - Wednesday, Sep 23, 2026 - Sunny
Hi: 67°F 19°C
Lo: 49°F 9°C
Sunrise 06:49 AM
Sunset 06:56 PM
Wind N 12 mph19 km/h
Dew Point 46°F8°C
uv Index 5
Barometric Pressure 30.15 in1021 mb
POP 8% *
Humidity 54%
* POP = Probability of Precipitation. Data for 12:00 PM.