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Harper Park, IL 7-Day Night Weather Forecast
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Harper Park, IL Weather Forecast
Harper Park, IL Weather Forecast Date: 526 AM CDT Fri Oct 09 2026
The area/counties/county of: Northern Cook, including the cities of: Evanston, Des Plaines, Schaumburg, Palatine, and Northbrook.or toggle through each period.
Today... Mostly cloudy. A slight chance of showers late in the morning. A slight chance of thunderstorms in the late morning and afternoon. A chance of showers in the afternoon. Highs around 70. South winds 5 to 10 mph. Chance of precipitation 50%.
Tonight... Mostly clear. Lows in the upper 50s. Southeast winds around 10 mph.
Saturday... Partly cloudy in the morning, then becoming mostly cloudy. Highs in the upper 70s. South winds 10 to 15 mph.
Saturday Night... Mostly cloudy. Lows in the upper 50s. Southeast winds 5 to 10 mph.
Sunday... Mostly cloudy in the morning, then clearing. Highs in the lower 70s inland, but only in the upper 60s near the lake. Southeast winds around 5 mph.
Sunday Night... Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 50s.
Columbus Day... Mostly cloudy in the morning, then becoming partly cloudy. Highs in the upper 70s.
Monday Night... Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers. A chance of thunderstorms, mainly in the evening. Lows around 60. Chance of precipitation 40%.
Tuesday... Partly cloudy. Highs in the lower 70s.
Tuesday Night... Partly cloudy. Lows in the lower 50s.
Wednesday... Mostly cloudy. A chance of showers in the afternoon. Highs in the mid 60s. Chance of precipitation 30%.
Wednesday Night... Mostly cloudy. A chance of showers in the evening, then showers likely after midnight. Lows in the mid 50s. Chance of precipitation 60%.
POP = Probability of Precipitation
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