


NWS Forecast for: Janesville WI Issued by: National Weather Service Milwaukee, WI Last Update: 5:38 am CDT Jul 16, 2025 | ![]() |
Today: A chance of showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then showers and thunderstorms likely after 4pm. Patchy fog before 8am. Otherwise, partly sunny and hot, with a high near 32. South wind 5 to 10 km/h increasing to 15 to 20 km/h in the afternoon. Chance of precipitation is 70%. New rainfall amounts between 7.5 mm and 1 cm possible. Tonight: A chance of showers and thunderstorms. Mostly cloudy, with a low around 17. Southwest wind around 15 km/h becoming northwest after midnight. Chance of precipitation is 50%. Thursday: Mostly cloudy, with a high near 21. North wind around 15 km/h. Thursday Night: Partly cloudy, with a low around 11. East wind 5 to 10 km/h. Friday: Mostly sunny, with a high near 25. Northeast wind 5 to 10 km/h becoming southeast in the afternoon. Friday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 16. Southeast wind 5 to 10 km/h. Saturday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 27. Southeast wind 5 to 10 km/h becoming west in the afternoon. Saturday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 18. Northwest wind 5 to 10 km/h becoming northeast in the evening. Sunday: A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 26. Chance of precipitation is 20%. Sunday Night: A slight chance of showers and thunderstorms, then a chance of showers after 1am. Mostly cloudy, with a low around 16. Chance of precipitation is 30%. Monday: A 30 percent chance of showers. Partly sunny, with a high near 27. Monday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 19. Tuesday: A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 31. | |
Janesville WI 42.67°N 89.04°W (Elev. 774 m) | |
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