Weather forecast for: Cortland IL
Last Update: 1:21 pm CDT Sep 17, 2026
This Afternoon: Patchy drizzle with a slight chance of showers after 4pm. Cloudy, with a high near 77. North wind around 5 mph.
Tonight: Patchy drizzle with a slight chance of showers before 10pm. Mostly cloudy, with a low around 60. Northeast wind 5 to 10 mph.
Friday: A 20 percent chance of showers after 3pm. Mostly cloudy, with a high near 72. East wind around 10 mph, with gusts as high as 20 mph.
Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3am. Mostly cloudy, with a low around 60. Southeast wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 70%.
Saturday: Showers and possibly a thunderstorm. High near 74. South wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 100%.
Saturday Night: Showers and possibly a thunderstorm. Low around 62. Chance of precipitation is 80%.
Sunday: Showers likely before 7am, then showers likely and possibly a thunderstorm between 7am and 1pm, then a chance of showers after 1pm. Mostly cloudy, with a high near 68. Chance of precipitation is 70%.
Sunday Night: A chance of showers. Mostly cloudy, with a low around 54.
Monday: Showers likely, mainly before 1pm. Cloudy, with a high near 63.
Monday Night: A chance of showers. Mostly cloudy, with a low around 50.
Tuesday: Partly sunny, with a high near 63.
Tuesday Night: Mostly cloudy, with a low around 49.
Wednesday: Mostly sunny, with a high near 67.
WeatherWorld.com
