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Johnstown, Wisconsin Weather Forecast
Johnstown, Wisconsin Weather
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Weather Forecast for Johnstown, Wisconsin : Rock County
Issued: 7:37 am CST Nov 3, 2025 Latitude: 42.7000119 Longitude: -88.8062182 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Tuesday Wednesday Thursday Friday Saturday Sunday
Sunny on Today Increasing Clouds on Tonight Mostly Sunny on Tuesday Sunny on Wednesday Partly Sunny on Thursday 30% chance of rain on Friday 40% chance of rain on Saturday 20% chance of rain on Sunday
High: 59°F Low: 33°F High: 59°F High: 56°F High: 54°F High: 56°F High: 45°F High: 41°F
Low: 42°F Low: 31°F Low: 44°F Low: 31°F Low: 28°F  
Sunny Increasing Clouds Mostly Sunny Sunny Partly Sunny Rain Rain Rain
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Current Conditions at
JANESVILLE - (KJVL)
46°
Feels like 40°F
Clear
as of 8:45 AM CST
Rel. Humidity: 70%
Dew Point: 37°F
Visibility: 10 Miles
Pressure: 30.12 in.
Flight Rule: VFR
Wind Data
13 MPH
280° West
Cloud Level(s): Clear
Current Conditions at
BURLINGTON MUNICIPAL AIR - (KBUU)
48°
Feels like 43°F
Clear
as of 8:55 AM CST
Rel. Humidity: 66%
Dew Point: 37°F
Visibility: 10 Miles
Pressure: 30.10 in.
Flight Rule: VFR
Wind Data
10 MPH
290° West
Cloud Level(s): Clear
Current Conditions at
WATERTOWN - (KRYV)
46°
Feels like 40°F
Clear
as of 8:55 AM CST
Rel. Humidity: 70%
Dew Point: 37°F
Visibility: 10 Miles
Pressure: 30.10 in.
Flight Rule: VFR
Wind Data
13 MPH
Gust: 18 MPH
280° West
Cloud Level(s): Clear
Current Conditions at
WAUKESHA - (KUES)
46°
Feels like 39°F
Clear
as of 8:45 AM CST
Rel. Humidity: 70%
Dew Point: 37°F
Visibility: 10 Miles
Pressure: 30.08 in.
Flight Rule: VFR
Wind Data
17 MPH
Gust: 26 MPH
280° West
Cloud Level(s): Clear
Sunny on Today Today... Sunny, with a high near 59. West wind 10 to 15 mph, with gusts as high as 30 mph.

Increasing Clouds on Tonight Tonight... Increasing clouds, with a low around 33. West wind 5 to 10 mph becoming southwest after midnight.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 59. South wind 5 to 10 mph.

Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 42. South wind 5 to 10 mph becoming west after midnight.

Sunny on Wednesday Wednesday... Sunny, with a high near 56. Northwest wind 10 to 15 mph.

Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 31. Northwest wind around 5 mph becoming calm in the evening.

Partly Sunny on Thursday Thursday... Partly sunny, with a high near 54. Light south wind increasing to 10 to 15 mph in the morning.

70% chance of rain Thursday Night Thursday Night... Rain likely, mainly after midnight. Mostly cloudy, with a low around 44. South wind 10 to 15 mph becoming southwest after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

30% chance of rain Friday Friday... A 30 percent chance of rain before noon. Partly sunny, with a high near 56.

Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 31.

40% chance of rain Saturday Saturday... A 40 percent chance of rain. Partly sunny, with a high near 45.

40% chance of rain & snow Saturday Night Saturday Night... A chance of rain and snow. Mostly cloudy, with a low around 28. Chance of precipitation is 40%.

20% chance of rain Sunday Sunday... A 20 percent chance of rain. Mostly sunny, with a high near 41.

Current Radar Image


Sun Almanac for Johnstown, Wisconsin
Sunrise: 06:32 AM
Sunset: 4:45 PM
Civil Sunrise:06:03 AM
Civil Sunset: 5:15 PM
Nautical Sunrise: 05:29 AM
Nautical Sunset: 5:48 PM
Astro Sunrise: 04:57 AM
Astro Sunset: 6:21 PM
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