| NWS Forecast for: Janesville WI Issued by: National Weather Service Milwaukee, WI Last Update: 11:16 am CST Dec 13, 2025 |  |
Today: Cloudy, then gradually becoming mostly sunny and cold, with a high near 6. Wind chill values between -5 and -10. Northwest wind around 10 mph. Tonight: Mostly clear, with a low around -9. Wind chill values between -15 and -25. Northwest wind around 10 mph. Sunday: Sunny and cold, with a high near 8. Wind chill values between -15 and -25. Northwest wind 5 to 10 mph. Sunday Night: Mostly cloudy, with a low around -3. Wind chill values between -10 and -15. Southwest wind 5 to 15 mph. Monday: Partly sunny, with a high near 23. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Monday Night: Mostly cloudy, with a low around 10. West wind around 5 mph becoming calm in the evening. Tuesday: Mostly cloudy, with a high near 34. South wind 5 to 10 mph. Tuesday Night: Mostly cloudy, with a low around 25. Southwest wind 5 to 10 mph. Wednesday: Partly sunny, with a high near 38. Wednesday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 34. Thursday: A 30 percent chance of rain. Mostly sunny, with a temperature rising to near 37 by 8am, then falling to around 26 during the remainder of the day. Thursday Night: Partly cloudy, with a low around 9. Friday: Partly sunny, with a high near 31. | |
| Janesville WI 42.69°N 89.01°W (Elev. 863 ft) | |
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