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Hourly Forecast
Daylight Hours
06:38
Sunrise
18:51
Sunset
Moon
Waxing Crescent
12:38
Moonrise
20:52
Moonset
Daily Forecast
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Air Quality Data Available
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UV Index
Humidity
Weather in Winnetka today, September 16, 2026
Cloud cover dominates in Winnetka on September 16, 2026, keeping sunshine limited. Expect a grey, overcast feel rather than long bright spells. The morning sky stays heavily clouded, with cover near 100% around 02:00. Grey conditions set the early tone before any later change.
The temperature range runs from about 19°C up to 24°C. The air stays humid, with relative humidity between 70% and 97% and the peak around 04:00. Winds stay light, near 4.5 km/h by 16:00, so the day feels still more than breezy.
Through the afternoon cloud remains the main feature, with cover near 100% around 12:00. Bright spells should stay limited even as the day wears on. Horizontal visibility sits around 13.8 km, briefly nearer 6.4 km. The sun rises at 06:38 and sets at 18:51, for a total of 12 hours 13 minutes of sunlight today.
Overall, Winnetka on September 16, 2026 stays grey and muted, so outdoor plans may want a flexible backup even with a high near 24°C.
Frequently asked questions about weather in Winnetka
How warm does it get in Winnetka?
The warmest month in Winnetka is July, with average high temperatures of 27°C. The average temperature during this period is around 23°C.
How cold does it get in Winnetka?
The coldest month in Winnetka is January, with average low temperatures of -5°C. The average temperature during this period is around -3°C.
What is the wettest time of year in Winnetka?
The wettest month in Winnetka is May, with an average of 121mm of precipitation.
What is the driest time of year in Winnetka?
The driest month in Winnetka is February, with an average of 56mm of precipitation.
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