Cook County Forest Preserve Weather Forecast
- 40
- 55
Rain Showers
- 37
- 49
Rain Showers
- 41
- 53
Partly Sunny
- 49
- 64
Chance Rain Showers
- 50
- 73
Chance Thunderstorms
- 45
- 63
Chance Rain Showers
- 42
- 59
Chance Rain Showers
Today 30 Apr Northern Cook
Mostly cloudy. A chance of Showers in the afternoon. Highs in the mid 50s Inland, but only around 50 near the lake. Temperature falling into the mid 40s in the afternoon. Northwest Winds around 5 Mph, becoming northeast in the afternoon. Chance of precipitation 50 percent.
Tonight 30 Apr Northern Cook
Mostly cloudy. Scattered Showers, mainly in the evening. Lows in the upper 30s. East Winds 5 to 10 Mph, becoming north after midnight. Chance of precipitation 50 percent.
Cook County Forest Preserve Temperature Statistics
April Temperature
Chicago, Chicago-O'Hare International Airport (2.5 miles)
Lowest 7 April, 2026
28.7 °FAverage April
53.6 °FHighest 14 April, 2026
82.7 °F
Climate (2021–Present)
Chicago, Chicago-O'Hare International Airport (2.5 miles)
Average Low 2021–2026
45.4 °FAverage 2021–2026
53.5 °FAverage High 2021–2026
61.9 °F