Turtlehead Lake, IL 14 Day Weather

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Turtlehead Lake, IL Weather - 14-Day Weather Forecast

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Turtlehead Lake IL Weather - Cumulonimbus Clouds - 84°F
Cumulonimbus Clouds
84°F
Updated 7:43 pm
Feels Like 99°F
Humidity 62%
Wind ESE 7 mph
Barometer  29.9 in
Dew Point 70°F
Turtlehead Lake IL Weather - Cumulonimbus Clouds - 29°C
Cumulonimbus Clouds
29°C
Updated 7:43 pm
Feels Like 37°C
Humidity 62%
Wind ESE 11 km/h
Barometer  101.3 kPa
Dew Point 21°C
Turtlehead Lake, IL Weather and Current Conditionsturtlehead lake il weather forecast

Turtlehead Lake, IL Weather Forecast

Turtlehead Lake Illinois WeatherTurtlehead Lake, Illinois Weather Weather Forecast
14 day API forecast for Turtlehead Lake. Note. The 7-day Turtlehead Lake weather forecast is the most reliable and accurate forecast. This model should only be used as a likely scenario. It is difficult to predict weather more than 7 days in advance.
Turtlehead Lake, IL Weather Forecast Dated: 743 PM Thu Sep 03 2026
Expect a very warm period with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate.

Thursday, September 3, 2026

Mid-Morning
Turtlehead Lake Weather - 2026-09-03 - Morning - Sunny
85°F 29°C
Sunny
Mid-Afternoon
Turtlehead Lake Weather - 2026-09-03 - Afternoon - Partly Cloudy
96°F 35°C
Partly Cloudy
Early-Evening
Turtlehead Lake Weather - 2026-09-03 - Evening - Sunny
90°F 32°C
Sunny
Sizzling hot near 96°F 35°C with a heat index reaching 104°F 40°C, sunny in the morning, partly cloudy in the afternoon, and sunny this evening, with steady humidity and steady pressure. Winds turning from the WSW to the SSE at 6 mph 10 km/h.

Friday, September 4, 2026

Mid-Morning
Turtlehead Lake Weather - 2026-09-04 - Morning - Sunny
78°F 25°C
Sunny
Mid-Afternoon
Turtlehead Lake Weather - 2026-09-04 - Afternoon - Sunny
94°F 35°C
Sunny
Early-Evening
Turtlehead Lake Weather - 2026-09-04 - Evening - Heavy Thunderstorms
83°F 28°C
Heavy Thunderstorms
Hot and sweltering around 94°F 35°C (heat index 99°F 37°C), mainly dry until evening thunderstorms arrive, with steady humidity and steady pressure. Winds switching from the E to the ENE at 4 mph 7 km/h.

Saturday, September 5, 2026

Mid-Morning
Turtlehead Lake Weather - 2026-09-05 - Morning - Partly Cloudy
74°F 23°C
Partly Cloudy
Mid-Afternoon
Turtlehead Lake Weather - 2026-09-05 - Afternoon - Sunny
83°F 28°C
Sunny
Early-Evening
Turtlehead Lake Weather - 2026-09-05 - Evening - Sunny
74°F 24°C
Sunny
Very warm near 83°F 28°C, though humidity makes it feel like 86°F 30°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds moving from the N to the NE at 9 mph 15 km/h.

Sunday, September 6, 2026

Mid-Morning
Turtlehead Lake Weather - 2026-09-06 - Morning - Sunny
71°F 22°C
Sunny
Mid-Afternoon
Turtlehead Lake Weather - 2026-09-06 - Afternoon - Sunny
77°F 25°C
Sunny
Early-Evening
Turtlehead Lake Weather - 2026-09-06 - Evening - Sunny
71°F 22°C
Sunny
Mild temperatures up to 77°F 25°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure. Winds swinging from the E to the NE at 6 mph 10 km/h.

Monday, September 7, 2026

Mid-Morning
Turtlehead Lake Weather - 2026-09-07 - Morning - Cloudy
69°F 20°C
Cloudy
Mid-Afternoon
Turtlehead Lake Weather - 2026-09-07 - Afternoon - Sunny
77°F 25°C
Sunny
Early-Evening
Turtlehead Lake Weather - 2026-09-07 - Evening - Sunny
72°F 23°C
Sunny
Mild with a high of 77°F 25°C, cloudy in the morning, sunny in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds blowing from the ENE at 8 mph 13 km/h.

Tuesday, September 8, 2026

Mid-Morning
Turtlehead Lake Weather - 2026-09-08 - Morning - Overcast
66°F 19°C
Overcast
Mid-Afternoon
Turtlehead Lake Weather - 2026-09-08 - Afternoon - Overcast
82°F 28°C
Overcast
Early-Evening
Turtlehead Lake Weather - 2026-09-08 - Evening - Sunny
80°F 27°C
Sunny
Warm and summery near 82°F 28°C, overcast in the morning, partly cloudy in the afternoon, and sunny this evening, with lower humidity and barometric pressure falling. Winds turning from the SSE to the S at 10 mph 16 km/h. Gusts up to 25 mph 40 km/h.

Wednesday, September 9, 2026

Mid-Morning
Turtlehead Lake Weather - 2026-09-09 - Morning - Scattered Showers
84°F 29°C
Scattered Showers
Mid-Afternoon
Turtlehead Lake Weather - 2026-09-09 - Afternoon - Scattered Showers
91°F 33°C
Scattered Showers
Early-Evening
Turtlehead Lake Weather - 2026-09-09 - Evening - Sunny
84°F 29°C
Sunny
Hot and sweltering around 91°F 33°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds switching from the WSW to the NW at 6 mph 10 km/h.

Thursday, September 10, 2026

Mid-Morning
Turtlehead Lake Weather - 2026-09-10 - Morning - Overcast
73°F 23°C
Overcast
Mid-Afternoon
Turtlehead Lake Weather - 2026-09-10 - Afternoon - Scattered Showers
76°F 25°C
Scattered Showers
Early-Evening
Turtlehead Lake Weather - 2026-09-10 - Evening - Cloudy
77°F 25°C
Cloudy
Enjoyable around 76°F 25°C, scattered downpours possible, with steady humidity and steady pressure.

Friday, September 11, 2026

Mid-Morning
Turtlehead Lake Weather - 2026-09-11 - Morning - Scattered Showers
70°F 21°C
Scattered Showers
Mid-Afternoon
Turtlehead Lake Weather - 2026-09-11 - Afternoon - Sunny
78°F 26°C
Sunny
Early-Evening
Turtlehead Lake Weather - 2026-09-11 - Evening - Sunny
74°F 23°C
Sunny
Mild temperatures up to 78°F 26°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds moving from the E to the ESE at 9 mph 15 km/h.

Saturday, September 12, 2026

Mid-Morning
Turtlehead Lake Weather - 2026-09-12 - Morning - Sunny
71°F 22°C
Sunny
Mid-Afternoon
Turtlehead Lake Weather - 2026-09-12 - Afternoon - Sunny
91°F 33°C
Sunny
Early-Evening
Turtlehead Lake Weather - 2026-09-12 - Evening - Sunny
84°F 29°C
Sunny
Very hot with a high of 91°F 33°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure. Winds swinging from the ESE to the SE at 9 mph 15 km/h. Gusts up to 20 mph 32 km/h.

Sunday, September 13, 2026

Mid-Morning
Turtlehead Lake Weather - 2026-09-13 - Morning - Sunny
83°F 28°C
Sunny
Mid-Afternoon
Turtlehead Lake Weather - 2026-09-13 - Afternoon - Sunny
95°F 35°C
Sunny
Early-Evening
Turtlehead Lake Weather - 2026-09-13 - Evening - Sunny
89°F 32°C
Sunny
Very hot with temperatures reaching 95°F 35°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure. Winds out of the WSW at 11 mph 17 km/h.

Monday, September 14, 2026

Mid-Morning
Turtlehead Lake Weather - 2026-09-14 - Morning - Light Showers
74°F 24°C
Light Showers
Mid-Afternoon
Turtlehead Lake Weather - 2026-09-14 - Afternoon - Overcast
86°F 30°C
Overcast
Early-Evening
Turtlehead Lake Weather - 2026-09-14 - Evening - Overcast
77°F 25°C
Overcast
Very warm near 86°F 30°C, though humidity makes it feel like 90°F 32°C, morning showers, giving way to clearing skies, with lower humidity and barometric pressure falling. Winds turning from the SW to the WSW at 8 mph 12 km/h. Gusts up to 21 mph 33 km/h.

Tuesday, September 15, 2026

Mid-Morning
Turtlehead Lake Weather - 2026-09-15 - Morning - Sunny
66°F 19°C
Sunny
Mid-Afternoon
Turtlehead Lake Weather - 2026-09-15 - Afternoon - Sunny
70°F 21°C
Sunny
Early-Evening
Turtlehead Lake Weather - 2026-09-15 - Evening - Partly Cloudy
65°F 18°C
Partly Cloudy
Enjoyable around 70°F 21°C, sunny in the morning, partly cloudy in the afternoon, and cloudy this evening, with steady humidity and barometric pressure rising. Winds switching from the W to the NW at 11 mph 17 km/h. Gusts up to 26 mph 42 km/h.

Wednesday, September 16, 2026

Mid-Morning
Turtlehead Lake Weather - 2026-09-16 - Morning - Sunny
59°F 15°C
Sunny
Mid-Afternoon
Turtlehead Lake Weather - 2026-09-16 - Afternoon - Sunny
67°F 19°C
Sunny
Early-Evening
Turtlehead Lake Weather - 2026-09-16 - Evening - Overcast
64°F 17°C
Overcast
Mildly cool near 67°F 19°C, sunny in the morning, becoming cloudy through the afternoon and evening, with steady humidity and steady pressure. Winds out of the NW at 8 mph 12 km/h.

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Weather by the Numbers

Thu, 3rd
Turtlehead Lake IL Weather - Thursday, Sep 3, 2026 - Sunny
Hi: 101°F 38°C
Lo: 77°F 25°C
Sunrise 06:19 AM
Sunset 07:21 PM
Wind WSW 7 mph12 km/h
Dew Point 75°F24°C
uv Index 4
Barometric Pressure 29.91 in1013 mb
POP 1% *
Humidity 46%
Fri, 4th
Turtlehead Lake IL Weather - Friday, Sep 4, 2026 - Partly Cloudy
Hi: 94°F 35°C
Lo: 75°F 24°C
Sunrise 06:20 AM
Sunset 07:20 PM
Wind SW 8 mph13 km/h
Dew Point 63°F17°C
uv Index 7
Barometric Pressure 29.88 in1012 mb
POP 3% *
Humidity 39%
Sat, 5th
Turtlehead Lake IL Weather - Saturday, Sep 5, 2026 - Sunny
Hi: 85°F 30°C
Lo: 72°F 22°C
Sunrise 06:21 AM
Sunset 07:18 PM
Wind NNE 5 mph8 km/h
Dew Point 67°F20°C
uv Index 7
Barometric Pressure 29.94 in1014 mb
POP 3% *
Humidity 57%
Sun, 6th
Turtlehead Lake IL Weather - Sunday, Sep 6, 2026 - Sunny
Hi: 78°F 25°C
Lo: 67°F 19°C
Sunrise 06:22 AM
Sunset 07:16 PM
Wind ENE 9 mph14 km/h
Dew Point 55°F13°C
uv Index 7
Barometric Pressure 30.09 in1019 mb
POP 1% *
Humidity 47%
Mon, 7th
Turtlehead Lake IL Weather - Monday, Sep 7, 2026 - Sunny
Hi: 77°F 25°C
Lo: 64°F 18°C
Sunrise 06:23 AM
Sunset 07:14 PM
Wind E 8 mph13 km/h
Dew Point 49°F9°C
uv Index 6
Barometric Pressure 30.15 in1021 mb
POP 1% *
Humidity 39%
Tue, 8th
Turtlehead Lake IL Weather - Tuesday, Sep 8, 2026 - Overcast
Hi: 83°F 28°C
Lo: 64°F 18°C
Sunrise 06:24 AM
Sunset 07:13 PM
Wind S 7 mph12 km/h
Dew Point 54°F12°C
uv Index 5
Barometric Pressure 30.06 in1018 mb
POP 11% *
Humidity 49%
Wed, 9th
Turtlehead Lake IL Weather - Wednesday, Sep 9, 2026 - Cloudy
Hi: 91°F 33°C
Lo: 78°F 26°C
Sunrise 06:25 AM
Sunset 07:11 PM
Wind WNW 12 mph20 km/h
Dew Point 64°F18°C
uv Index 7
Barometric Pressure 29.91 in1013 mb
POP 8% *
Humidity 43%
Thu, 10th
Turtlehead Lake IL Weather - Thursday, Sep 10, 2026 - Light Rain Shower
Hi: 78°F 26°C
Lo: 73°F 23°C
Sunrise 06:26 AM
Sunset 07:09 PM
Wind WNW 3 mph5 km/h
Dew Point 58°F15°C
uv Index 5
Barometric Pressure 30 in1016 mb
POP 20% *
Humidity 60%
Fri, 11th
Turtlehead Lake IL Weather - Friday, Sep 11, 2026 - Sunny
Hi: 79°F 26°C
Lo: 66°F 19°C
Sunrise 06:27 AM
Sunset 07:08 PM
Wind E 11 mph18 km/h
Dew Point 52°F11°C
uv Index 6
Barometric Pressure 29.97 in1015 mb
POP 2% *
Humidity 45%
Sat, 12th
Turtlehead Lake IL Weather - Saturday, Sep 12, 2026 - Sunny
Hi: 93°F 34°C
Lo: 65°F 18°C
Sunrise 06:28 AM
Sunset 07:06 PM
Wind SSE 8 mph13 km/h
Dew Point 58°F15°C
uv Index 7
Barometric Pressure 29.91 in1013 mb
POP 1% *
Humidity 45%
Sun, 13th
Turtlehead Lake IL Weather - Sunday, Sep 13, 2026 - Sunny
Hi: 95°F 35°C
Lo: 77°F 25°C
Sunrise 06:29 AM
Sunset 07:04 PM
Wind WSW 10 mph17 km/h
Dew Point 62°F17°C
uv Index 8
Barometric Pressure 29.88 in1012 mb
POP 1% *
Humidity 37%
Mon, 14th
Turtlehead Lake IL Weather - Monday, Sep 14, 2026 - Overcast
Hi: 88°F 31°C
Lo: 66°F 19°C
Sunrise 06:31 AM
Sunset 07:02 PM
Wind SW 10 mph16 km/h
Dew Point 67°F20°C
uv Index 6
Barometric Pressure 29.91 in1013 mb
POP 16% *
Humidity 66%
Tue, 15th
Turtlehead Lake IL Weather - Tuesday, Sep 15, 2026 - Sunny
Hi: 71°F 22°C
Lo: 60°F 16°C
Sunrise 06:32 AM
Sunset 07:01 PM
Wind W 15 mph23 km/h
Dew Point 42°F6°C
uv Index 6
Barometric Pressure 29.74 in1007 mb
POP 1% *
Humidity 37%
Wed, 16th
Turtlehead Lake IL Weather - Wednesday, Sep 16, 2026 - Sunny
Hi: 67°F 19°C
Lo: 55°F 13°C
Sunrise 06:33 AM
Sunset 06:59 PM
Wind NW 8 mph13 km/h
Dew Point 42°F5°C
uv Index 5
Barometric Pressure 30.03 in1017 mb
POP 1% *
Humidity 43%
* POP = Probability of Precipitation. Data for 12:00 PM.