Janesville, IA Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Janesville, IA in one place.
Mostly sunny, with a high near 81. South southeast wind 7 to 14 mph, with gusts as high as 20 mph.
Local Weather Overview
This forecast page for Janesville, IA 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: Jun 2, 2026 2:25 AM CDT.
The active forecast window currently covers Jun 3 to Jun 8, 2026 for Janesville, IA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 3 to Jun 8, 2026
- Latest sync
- Jun 2, 2026 2:25 AM CDT
- Forecast office
- DMX
- Source
- NOAA / NWS
Daily Outlook
This Week in Janesville
Monday looks like the warmest upcoming period in Janesville at 87 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 58 degrees F.
The strongest winds are forecast for Wednesday at about 7 to 14 mph SSE.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 2, 2026 2:25 AM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- DMX
- Radar station
- KDMX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Partly cloudy, with a low around 58. South wind 7 to 13 mph.
Partly sunny, with a high near 82.
A chance of showers and thunderstorms between 7pm and 1am, then showers and thunderstorms likely. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.
Showers and thunderstorms likely before 7am, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 84. Chance of precipitation is 60%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Chance of precipitation is 50%.
A chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 66. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Jun 3
|
Mostly Sunny
|
81°F |
7 to 14 mph
SSE
|
|
Wednesday Night
Jun 3
|
Partly Cloudy
|
58°F |
7 to 13 mph
S
|
|
Thursday
Jun 4
|
Partly Sunny
|
82°F |
10 to 14 mph
SSW
|
|
Thursday Night
Jun 4
|
Chance Showers And Thunderstorms
|
63°F |
5 to 12 mph
SSW
|
|
Friday
Jun 5
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
84°F |
7 to 10 mph
SSW
|
|
Friday Night
Jun 5
|
Chance Showers And Thunderstorms
|
65°F |
6 to 10 mph
SSW
|
|
Saturday
Jun 6
|
Chance Showers And Thunderstorms
|
84°F |
7 to 10 mph
W
|
|
Saturday Night
Jun 6
|
Chance Showers And Thunderstorms
|
64°F |
5 to 9 mph
NE
|
|
Sunday
Jun 7
|
Chance Showers And Thunderstorms
|
86°F |
6 to 12 mph
SE
|
|
Sunday Night
Jun 7
|
Chance Showers And Thunderstorms
|
66°F |
8 to 12 mph
ESE
|
|
Monday
Jun 8
|
Chance Showers And Thunderstorms
|
87°F |
9 to 13 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Janesville.