61071 Weather (Rock Falls, IL)

Weather forecast for: Rock Falls IL

Last Update: 5:41 am CDT Sep 30, 2026

Today: Showers and possibly a thunderstorm. High near 70. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Tonight: Showers likely, then showers and possibly a thunderstorm after 7pm. Low around 63. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Thursday: Showers and possibly a thunderstorm. High near 70. Calm wind becoming west around 5 mph in the morning. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

Thursday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 52. North wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

Friday: Sunny, with a high near 67.

Friday Night: Mostly clear, with a low around 45.

Saturday: Sunny, with a high near 67.

Saturday Night: Partly cloudy, with a low around 48.

Sunday: Sunny, with a high near 68.

Sunday Night: Mostly clear, with a low around 43.

Monday: Sunny, with a high near 63.

Monday Night: Mostly clear, with a low around 42.

Tuesday: Mostly sunny, with a high near 64.