Northbrook Weather Forecast
- 53
- 73
Mostly Sunny
- 60
- 77
Mostly Cloudy
- 62
- 78
Partly Sunny
- 61
- 77
Mostly Sunny
- 65
- 80
Partly Sunny
- 65
- 83
Slight Chance Rain Showers
Today 8 Sep Northern Cook
Sunny. Highs in the lower 70s. Southwest Winds 5 to 10 Mph.
Tonight 8 Sep Northern Cook
Mostly clear in the Evening, then becoming partly cloudy. Lows in the lower 50s. South Winds 5 to 10 Mph.
Northbrook Temperature Statistics
September Temperature
Chicago / Wheeling, Pal-Waukee Airport (3.7 miles)
Lowest 4 September, 2025
48 °FAverage September
63 °FHighest 2 September, 2025
78.1 °F
Climate (2020–Present)
Chicago / Wheeling, Pal-Waukee Airport (3.7 miles)
Average Low 2020–2025
44.1 °FAverage 2020–2025
52.9 °FAverage High 2020–2025
61.4 °F