| NWS Forecast for: Sullivan WI Issued by: National Weather Service Milwaukee, WI Last Update: 8:41 pm CDT Sep 4, 2026 |  |
Tonight: A slight chance of showers and thunderstorms between 10pm and 2am. Patchy fog after 1am. Otherwise, partly cloudy, with a low around 69. Northeast wind around 5 mph becoming calm. Chance of precipitation is 20%. Saturday: Areas of fog before 9am. Otherwise, partly sunny, with a high near 81. Northeast wind 5 to 10 mph. Saturday Night: Mostly clear, with a low around 60. Northeast wind 5 to 10 mph becoming light in the evening. Sunday: Mostly sunny, with a high near 79. Calm wind becoming east around 5 mph in the afternoon. Sunday Night: Partly cloudy, with a low around 58. East wind around 5 mph becoming calm in the evening. Labor Day: Mostly sunny, with a high near 80. Calm wind becoming southeast around 5 mph in the morning. Monday Night: Mostly cloudy, with a low around 61. Southeast wind around 5 mph. Tuesday: A 20 percent chance of showers after 1pm. Partly sunny, with a high near 84. South wind 5 to 10 mph. Tuesday Night: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 70. Chance of precipitation is 60%. Wednesday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 85. Wednesday Night: Partly cloudy, with a low around 62. Thursday: Mostly sunny, with a high near 77. Thursday Night: A 20 percent chance of showers. Partly cloudy, with a low around 56. Friday: A 20 percent chance of showers. Partly sunny, with a high near 78. | |
| Sullivan WI 43°N 88.6°W (Elev. 846 ft) | |
Visit your local NWS office at: https://www.weather.gov/mkx |
