Weather forecast for: New Windsor IL
Last Update: 1:25 pm CDT Sep 27, 2026
This Afternoon: Partly sunny, with a high near 70. Northeast wind around 5 mph.
Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 53. Northeast wind around 5 mph becoming calm in the evening.
Monday: Sunny, with a high near 73. Calm wind becoming northeast around 5 mph.
Monday Night: Mostly clear, with a low around 55. Calm wind becoming southeast around 5 mph after midnight.
Tuesday: Mostly sunny, with a high near 76.
Tuesday Night: A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 65.
Wednesday: A 50 percent chance of showers. Mostly cloudy, with a high near 76.
Wednesday Night: A chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. Chance of precipitation is 70%.
Thursday: Showers. High near 70. Chance of precipitation is 80%.
Thursday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 56.
Friday: Mostly sunny, with a high near 65.
Friday Night: Mostly clear, with a low around 50.
Saturday: Sunny, with a high near 66.