Winnetka Weather Forecast
- 68
- 73
Decreasing Clouds
- 69
- 79
Partly Sunny
- 74
- 84
Partly Sunny
- 79
- 96
Mostly Sunny
- 75
- 96
Chance Thunderstorms
- 72
- 87
Chance Thunderstorms
- 72
- 84
Chance Thunderstorms
Today 20 Jul Northern Cook
Mostly cloudy. A slight chance of Showers and Thunderstorms late in the morning. Highs in the mid 70s. Northeast Winds around 10 Mph. Chance of precipitation 20 percent.
Tonight 20 Jul Northern Cook
Partly cloudy. Lows in the mid 60s. Northeast Winds 5 to 10 Mph.
Winnetka Temperature Statistics
July Temperature
Chicago / Wheeling, Pal-Waukee Airport (8.7 miles)
Lowest 18 July, 2025
59 °FAverage July
76.5 °FHighest 5 July, 2025
93.7 °F
Climate (2020–Present)
Chicago / Wheeling, Pal-Waukee Airport (8.7 miles)
Average Low 2020–2025
44.1 °FAverage 2020–2025
52.9 °FAverage High 2020–2025
61.5 °F