I-90 weather conditions near Janesville, Wisconsin
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Current Weather Conditions
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7 day weather forecast
Current condition: Fair 66°F 2025-08-15T00:30:00-05:00 
Overnight 2025-08-15, Mostly Cloudy. Mostly cloudy, with a low around 61. Southeast wind around 5 mph.
Friday 2025-08-15, Mostly Sunny. Mostly sunny, with a high near 87. South wind 5 to 10 mph.Friday Night 2025-08-15, Partly Cloudy then Chance T-storms. A 30 percent chance of showers and thunderstorms, mainly after 3am. Partly cloudy, with a low around 70. South wind around 5 mph becoming calm.
Saturday 2025-08-16, Chance T-storms. A 30 percent chance of showers and thunderstorms, mainly before 7am. Mostly sunny, with a high near 89. Heat index values as high as 100. South wind 5 to 10 mph.
Saturday Night 2025-08-16, Chance T-storms. A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69. Southwest wind around 5 mph becoming east after midnight.
Sunday 2025-08-17, Slight Chance T-storms. A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 83. East wind 5 to 10 mph.
Sunday Night 2025-08-17, Chance T-storms. A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 66. East wind 5 to 10 mph.
Monday 2025-08-18, Chance T-storms. A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 82. Southeast wind 5 to 10 mph becoming southwest in the afternoon.
Monday Night 2025-08-18, Chance T-storms. A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.Tuesday 2025-08-19, Chance Showers then Chance T-storms. A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.
Tuesday Night 2025-08-19, Slight Chance T-storms. A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Wednesday 2025-08-20, Partly Sunny. Partly sunny, with a high near 77.
Wednesday Night 2025-08-20, Mostly Clear. Mostly clear, with a low around 59.
Thursday 2025-08-21, Sunny. Sunny, with a high near 78.