Wilmette Weather Forecast
- 65
- 80
Mostly Sunny
- 65
- 78
Chance Rain Showers
- 66
- 76
Chance Rain Showers
- 65
- 77
Rain Showers Likely
- 64
- 77
Chance Rain Showers
- 61
- 76
Chance Rain Showers
Today 18 Sep Northern Cook
Mostly sunny. Highs in the mid 80s Inland, but only around 80 near the lake. Southeast Winds around 5 Mph, becoming east in the afternoon.
Tonight 18 Sep Northern Cook
Mostly clear in the Evening, then becoming partly cloudy. Lows in the mid 60s. Northeast Winds around 5 Mph.
Wilmette Temperature Statistics
September Temperature
Chicago / Wheeling, Pal-Waukee Airport (9.9 miles)
Lowest 7 September, 2025
46.9 °FAverage September
65.7 °FHighest 12 September, 2025
84.9 °F
Climate (2020–Present)
Chicago / Wheeling, Pal-Waukee Airport (9.9 miles)
Average Low 2020–2025
44.1 °FAverage 2020–2025
52.9 °FAverage High 2020–2025
61.5 °F