Prospect Heights Weather Forecast
- 35
- 56
Rain Showers
- 26
- 37
Chance Rain/Snow
- 26
- 38
Chance Snow
- 20
- 32
Slight Chance Snow
- 20
- 32
Mostly Cloudy
- 34
- 41
Mostly Cloudy
- 26
- 47
Slight Chance Rain/Snow
Today 19 Feb Northern Cook
Mostly cloudy. A slight chance of Showers early in the afternoon. Showers likely and a slight chance of Thunderstorms late. Highs in the lower 50s Inland, but only in the mid 40s near the lake. Temperature falling into the mid 40s in the afternoon. Northeast Winds 5 to 10 Mph. Chance of precipitation 60 percent.
Tonight 19 Feb Northern Cook
A chance of Thunderstorms in the evening. Showers. A slight chance of Thunderstorms after midnight. Patchy fog after midnight. Breezy. Lows in the mid 30s. Northeast Winds around 10 Mph, increasing to south 15 to 20 Mph with Gusts up to 30 Mph after midnight. Chance of precipitation 90 percent.
Prospect Heights Temperature Statistics
February Temperature
Chicago / Wheeling, Pal-Waukee Airport (2.5 miles)
Lowest 1 February, 2026
1.7 °FAverage February
29.4 °FHighest 16 February, 2026
64.9 °F
Climate (2021–Present)
Chicago / Wheeling, Pal-Waukee Airport (2.5 miles)
Average Low 2021–2026
44.1 °FAverage 2021–2026
52.9 °FAverage High 2021–2026
61.6 °F