City of Janesville Weather Forecast
Local 7-day forecast
Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for City of Janesville in one place.
Showers and thunderstorms likely. Cloudy, with a high near 72. Southwest 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 City of Janesville 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 15, 2026 1:34 PM CDT.
The active forecast window currently covers Apr 15 to Apr 21, 2026 for City of Janesville.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 15 to Apr 21, 2026
- Latest sync
- Apr 15, 2026 1:34 PM CDT
- Forecast office
- MKX
- Source
- NOAA / NWS
Daily Outlook
This Week in City of Janesville
Friday looks like the warmest upcoming period in City of Janesville at 77 degrees F.
Sunday Night is the coolest period ahead with temperatures near 31 degrees F.
The strongest winds are forecast for Friday at about 5 to 15 mph S.
Precipitation is mentioned in 9 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 15, 2026 1:34 PM CDT
- Coverage
- 7 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
Showers and thunderstorms likely before 9pm, then patchy fog and showers and thunderstorms likely between 9pm and 10pm, then patchy fog and showers and thunderstorms between 10pm and 11pm, then patchy fog and showers and thunderstorms likely between 11pm and midnight, then patchy fog and showers and thunderstorms likely between midnight and 1am, then patchy fog and a chance of showers and thunderstorms between 1am and 5am, then patchy fog and a chance of showers and thunderstorms. Cloudy, with a low around 57. South wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Patchy fog and showers and thunderstorms likely. Partly sunny, with a high near 69. West wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
A chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 52. South wind 0 to 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
A slight chance of rain showers between 1pm and 4pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 77. South wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 7pm, then showers and thunderstorms. Mostly cloudy. Low around 45, with temperatures rising to around 52 overnight. South wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Showers and thunderstorms likely. Partly sunny, with a high near 55. West wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
A chance of rain showers before 10pm, then a slight chance of rain and snow showers between 10pm and 1am. Partly cloudy, with a low around 32. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Mostly sunny, with a high near 49.
Partly cloudy, with a low around 31.
Sunny, with a high near 59.
Partly cloudy, with a low around 45.
Mostly sunny, with a high near 69.
A slight chance of rain showers after 1am. Partly cloudy, with a low around 48. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Apr 15
|
Showers And Thunderstorms Likely
|
72°F |
10 mph
SW
|
|
Tonight
Apr 15
|
Showers And Thunderstorms Likely then Patchy Fog
|
57°F |
5 to 10 mph
S
|
|
Thursday
Apr 16
|
Patchy Fog
|
69°F |
5 to 10 mph
W
|
|
Thursday Night
Apr 16
|
Chance Showers And Thunderstorms then Partly Cloudy
|
52°F |
0 to 5 mph
S
|
|
Friday
Apr 17
|
Partly Sunny then Slight Chance Showers And Thunderstorms
|
77°F |
5 to 15 mph
S
|
|
Friday Night
Apr 17
|
Slight Chance Showers And Thunderstorms then Showers And Thunderstorms
|
45°F |
10 to 15 mph
S
|
|
Saturday
Apr 18
|
Showers And Thunderstorms Likely
|
55°F |
10 to 15 mph
W
|
|
Saturday Night
Apr 18
|
Slight Chance Rain And Snow Showers
|
32°F |
10 to 15 mph
W
|
|
Sunday
Apr 19
|
Mostly Sunny
|
49°F |
10 to 15 mph
W
|
|
Sunday Night
Apr 19
|
Partly Cloudy
|
31°F |
5 to 10 mph
NW
|
|
Monday
Apr 20
|
Sunny
|
59°F |
5 to 10 mph
S
|
|
Monday Night
Apr 20
|
Partly Cloudy
|
45°F |
10 mph
S
|
|
Tuesday
Apr 21
|
Mostly Sunny
|
69°F |
10 to 15 mph
SW
|
|
Tuesday Night
Apr 21
|
Partly Cloudy then Slight Chance Rain Showers
|
48°F |
5 to 10 mph
SW
|
Nearby Forecasts
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