Turtle Lake, IL 14 Day Weather
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Turtle Lake, IL Weather Forecast


Turtle Lake, IL Weather Forecast Dated: 146 PM Wed Sep 09 2026
Expect a very warm period with a mix of sun and clouds and frequent chances of rain over the coming period. generally humid conditions and no major pressure swings will dominate.
Wednesday, September 9, 2026
Mid-Morning
78°F 26°C
Cloudy
Mid-Afternoon
86°F 30°C
Light Rain
Early-Evening
80°F 27°C
Light Showers
Warm and summery around 86°F 30°C (feels like 93°F 34°C), drier morning followed by showers lasting through evening, with steady humidity and steady pressure. Winds turning from the NW to the W at 5 mph 8 km/h.
Thursday, September 10, 2026
Mid-Morning
68°F 20°C
Light Showers
Mid-Afternoon
74°F 23°C
Scattered Showers
Early-Evening
74°F 24°C
Scattered Showers
Comfortable with temperatures reaching 74°F 23°C, scattered downpours possible, with lower humidity and steady pressure.
Friday, September 11, 2026
Mid-Morning
69°F 20°C
Partly Cloudy
Mid-Afternoon
84°F 29°C
Sunny
Early-Evening
77°F 25°C
Sunny
Quite warm around 84°F 29°C, cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure falling. Winds blowing from the SSE at 6 mph 9 km/h.
Saturday, September 12, 2026
Mid-Morning
74°F 23°C
Sunny
Mid-Afternoon
88°F 31°C
Cloudy
Early-Evening
82°F 28°C
Overcast
Warm temperatures up to 88°F 31°C, sunny in the morning, cloudy in the afternoon, and overcast this evening, with lower humidity and steady pressure. Winds moving from the S to the NNW at 5 mph 8 km/h.
Sunday, September 13, 2026
Mid-Morning
72°F 22°C
Overcast
Mid-Afternoon
86°F 30°C
Overcast
Early-Evening
81°F 28°C
Overcast
Quite warm reaching 86°F 30°C, feeling like 89°F 31°C during peak afternoon, overcast through the afternoon, turning cloudy this evening, with lower humidity and steady pressure.
Monday, September 14, 2026
Mid-Morning
81°F 27°C
Cloudy
Mid-Afternoon
95°F 35°C
Sunny
Early-Evening
88°F 31°C
Sunny
Very hot with a high of 95°F 35°C, feeling closer to 99°F 37°C in the humidity, partly cloudy in the morning, sunny in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure. Winds swinging from the SSW to the WNW at 9 mph 13 km/h.
Tuesday, September 15, 2026
Mid-Morning
65°F 19°C
Light Showers
Mid-Afternoon
74°F 24°C
Partly Cloudy
Early-Evening
72°F 22°C
Sunny
Comfortable with temperatures reaching 74°F 24°C, early showers breaking for a drier afternoon, with lower humidity and steady pressure. Winds shifting from the ESE to the NE at 8 mph 12 km/h.
Wednesday, September 16, 2026
Mid-Morning
67°F 19°C
Light Showers
Mid-Afternoon
72°F 22°C
Light Showers
Early-Evening
71°F 22°C
Cloudy
Enjoyable around 72°F 22°C, showers lingering into the afternoon before clearing, with increasing humidity and steady pressure.
Thursday, September 17, 2026
Mid-Morning
66°F 19°C
Light Showers
Mid-Afternoon
67°F 19°C
Light Showers
Early-Evening
67°F 20°C
Light Showers
Refreshing around 67°F 19°C, on-and-off showers throughout the day, with steady humidity and steady pressure. Winds turning from the NE to the E at 8 mph 13 km/h.
Friday, September 18, 2026
Mid-Morning
68°F 20°C
Scattered Showers
Mid-Afternoon
83°F 28°C
Scattered Showers
Early-Evening
81°F 27°C
Sunny
Warm and summery around 83°F 28°C (feels like 87°F 31°C), periods of heavy rain and gusty conditions, with lower humidity and barometric pressure falling.
Saturday, September 19, 2026
Mid-Morning
84°F 29°C
Sunny
Mid-Afternoon
93°F 34°C
Partly Cloudy
Early-Evening
84°F 29°C
Sunny
Hot and sweltering around 93°F 34°C (heat index 97°F 36°C), cloudy in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure. Winds easing from SW 17 mph 27 km/h to NNW 9 mph 15 km/h.
Sunday, September 20, 2026
Mid-Morning
72°F 22°C
Sunny
Mid-Afternoon
86°F 30°C
Overcast
Early-Evening
81°F 28°C
Cloudy
Balmy with temperatures reaching 86°F 30°C, sunny in the morning, overcast in the afternoon, and sunny this evening, with steady humidity and steady pressure.
Monday, September 21, 2026
Mid-Morning
71°F 22°C
Fog
Mid-Afternoon
74°F 23°C
Scattered Showers
Early-Evening
71°F 22°C
Light Showers
Enjoyable around 74°F 23°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure.
Tuesday, September 22, 2026
Mid-Morning
70°F 21°C
Fog
Mid-Afternoon
80°F 27°C
Scattered Showers
Early-Evening
75°F 24°C
Cloudy
Warm temperatures up to 80°F 27°C, scattered downpours possible, with lower humidity and steady pressure.
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