Janesville, WI Weather Forecast
Local 7-day forecast
Rain Showers Likely then Partly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Janesville, WI in one place.
Rain showers likely before 9am. Partly sunny, with a high near 52. North wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Local Weather Overview
This forecast page for Janesville, WI is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Apr 9, 2026 3:40 PM CDT.
The active forecast window currently covers Apr 10 to Apr 15, 2026 for Janesville, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 10 to Apr 15, 2026
- Latest sync
- Apr 9, 2026 3:40 PM CDT
- Forecast office
- MKX
- Source
- NOAA / NWS
Daily Outlook
This Week in Janesville
Tuesday looks like the warmest upcoming period in Janesville at 79 degrees F.
Friday Night is the coolest period ahead with temperatures near 35 degrees F.
The strongest winds are forecast for Sunday at about 15 to 20 mph S.
Precipitation is mentioned in 11 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 9, 2026 3:40 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- MKX
- Radar station
- KMKX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 35. Northeast wind 0 to 5 mph.
A chance of rain showers after 1pm. Mostly sunny, with a high near 57. Southeast wind 0 to 10 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
A chance of rain showers before 7pm, then showers and thunderstorms likely. Mostly cloudy. Low around 48, with temperatures rising to around 55 overnight. Southeast wind 10 to 15 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 72. South wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Southwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
A chance of rain showers before 7am, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 77. Chance of precipitation is 40%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Showers and thunderstorms likely. Partly sunny, with a high near 79. Chance of precipitation is 70%.
Showers and thunderstorms. Mostly cloudy, with a low around 55. Chance of precipitation is 80%.
Showers and thunderstorms likely. Mostly cloudy, with a high near 67. Chance of precipitation is 70%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 48. Chance of precipitation is 50%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Apr 10
|
Rain Showers Likely then Partly Sunny
|
52°F |
10 mph
N
|
|
Friday Night
Apr 10
|
Mostly Clear
|
35°F |
0 to 5 mph
NE
|
|
Saturday
Apr 11
|
Mostly Sunny then Chance Rain Showers
|
57°F |
0 to 10 mph
SE
|
|
Saturday Night
Apr 11
|
Showers And Thunderstorms Likely
|
48°F |
10 to 15 mph
SE
|
|
Sunday
Apr 12
|
Chance Rain Showers
|
72°F |
15 to 20 mph
S
|
|
Sunday Night
Apr 12
|
Chance Showers And Thunderstorms
|
61°F |
15 to 20 mph
SW
|
|
Monday
Apr 13
|
Chance Rain Showers
|
77°F |
15 mph
SW
|
|
Monday Night
Apr 13
|
Showers And Thunderstorms Likely
|
62°F |
10 to 15 mph
SW
|
|
Tuesday
Apr 14
|
Showers And Thunderstorms Likely
|
79°F |
10 to 15 mph
SW
|
|
Tuesday Night
Apr 14
|
Showers And Thunderstorms
|
55°F |
10 to 15 mph
S
|
|
Wednesday
Apr 15
|
Showers And Thunderstorms Likely
|
67°F |
15 mph
SW
|
|
Wednesday Night
Apr 15
|
Chance Showers And Thunderstorms
|
48°F |
5 to 15 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Janesville.
