| NWS Forecast for: Sullivan WI Issued by: National Weather Service Milwaukee, WI Last Update: 9:51 pm CDT Oct 7, 2026 |  |
| Tonight: Partly cloudy, with a low around 8. Northwest wind 5 to 10 km/h. Thursday: Mostly sunny, with a high near 20. Northwest wind 5 to 15 km/h. Thursday Night: Partly cloudy, with a low around 7. Calm wind. Friday: A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 21. Light south wind increasing to 10 to 15 km/h in the morning. Friday Night: Mostly clear, with a low around 14. South wind 10 to 15 km/h. Saturday: Sunny, with a high near 27. South wind 15 to 25 km/h, with gusts as high as 40 km/h. Saturday Night: Partly cloudy, with a low around 14. South wind 10 to 15 km/h. Sunday: Mostly sunny, with a high near 24. South wind 5 to 10 km/h. Sunday Night: Mostly clear, with a low around 13. Columbus Day: A 20 percent chance of showers after 1pm. Partly sunny, with a high near 22. Monday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 7. Tuesday: A 20 percent chance of showers. Partly sunny, with a high near 15. Tuesday Night: Partly cloudy, with a low around 4. Wednesday: Mostly sunny, with a high near 15. | |
| Sullivan WI 43°N 88.6°W (Elev. 846 m) | |
Visit your local NWS office at: https://www.weather.gov/mkx |
