Our Proprietary 10-Day Forecast

Loading Forecast...

Current warnings over Janesville, Wisconsin
Add warnings to your site:
<div style='text-align:center'><a href='https://f5wx.com/warnings/'>
  <img src="https://www.f5wx.com/warnings/warningsF5.gif" alt='F5Weather Warnings Map' />
<p>Warnings from F5Weather</a></div>

United States weather warnings are issued by various organizations under NOAA. Most from the National Weather Service, but also Storm Prediction Center and National Hurricane Center.

Do not use our graphics for protection of life or property. Delays in image processing are possible.

You are free to embed our warning graphics into your web site using the code above. We just ask that you keep a link and credit to F5Weather as a source for the graphics.


View more weather maps.

Zoom Out

Current radar over Janesville, Wisconsin red dot
Add this radar to your site:
<div style='text-align:center'><a href='https://f5wx.com/radar/'>
<img src='https://www.f5wx.com/radar/live/radar_greatlakes.gif' alt='F5Weather Radar'>
<p>Live radar from F5Weather</a></div>

Our radar is based off of US NEXRAD and Canadian weather radar sites through the quality controlled MRMS system. It compiles various sources for radar data and filters out erroneous returns such as sun spikes and ground clutter. We then colorize the precipitation based on our methods for determining precipitation type. Rain is in shades of green, mixed precipitation and freezing rain in shades of pink and snow is in shades of blue.

View more weather maps.

Zoom Out

Current satellite over Janesville, Wisconsin red dot
Add this satellite to your site:
<div style='text-align:center'><a href='https://f5wx.com/satellite/'>
<img src='https://www.f5wx.com/satellite/live/ir_greatlakes.gif' alt='F5Weather Satellite'>
<p>Live satellite from F5Weather</a></div>

Our satellite is from the GOES-16. It is color enhanced by using a geocolor terrain background during the day and black marble city lights at night. The daytime satellite data is Visible satellite imagery, and nighttime uses Infrared bands. The bluish clouds are fog and low cloud. The whiteest clouds are the coldest, highest cloud tops.

View more weather maps.

Zoom Out

Current surface weather map around Rock County, WI

This surface map is from the HRRR computer model. It is a 1-hour forecast, updated hourly, which is a good estimate of the current surface conditions. This map shows the current high and low pressure centers, pressure isobar contours, wind streamlines and thickness contours. It also shows the currently depicted preciptiation estimates, although this should not be a substitute for actual live radar. The purple dashed contour is the 5400m thickness line, which is often a good proxy for the rain/snow line.

View more weather maps.

Zoom Out

Temperatures right now near Janesville, Wisconsin

This is the latest surface temperatures as depicted by the HRRR computer model, updated hourly. Although these are not actual observations, this model is a very good representation of current conditions as it factors in observations, terrain and physics to give you more detailed temperatures in areas that do not have reporting weather stations. For the latest reports at specific locations, like in Janesville, WI please see our current conditions data on the left and right side of this page, or go to our current conditions page.

View more weather maps.

Zoom Out

Surface wind speed map over Janesville, WI

This map shows the latest HRRR computer model winds. This depiction of the current wind directions and speeds is an estimate from the computer model. For actual observations in Janesville, WI, see the current conditions data on the left and right side of this page, or go to our current conditions page.

View more weather maps.

Zoom Out

Regional 24 hour rainfall expected near Janesville, Wisconsin

This is a forecast of the amount of precipitation expected over the next 24 hours from the HRRR weather forecast model. This is only one forecast depiction, and you should check other models to get a better idea of what may happen. You can view this and other models in more detail on our main weather forecast maps page. There, you will also be able to look at forecasts beyond just 24 hours and look at forecasts out to as far as 16 days.

View more weather maps.

Zoom Out

Area snowfall accumulation expected around Rock County, Wisconsin

This is snowfall forecast, with amounts anticipated in the next 24 hours. This guidance is from the HRRR weather model. For more model forecasts out to 16 days, visit our main weather forecast maps page.

View more weather maps.

These are Convective Outlooks from the Storm Prediction Center. Click to see Days 1-3 broken down into Tornado, Wind and Hail threats, as well as days 5-8 outlooks.

View more weather maps.

Atlantic Hurricane and Tropical Storm Tracking Map
Add this hurricane tracker to your site:
<div style='text-align:center'><a href='https://www.f5wx.com/models/hurricane/atlantic.png'>
<img src='https://www.f5wx.com/models/hurricane/atlantic.png' alt='F5Weather Atlantic Hurricane and Tropical Storm Tracking Map'>
<p>Hurricane Tracking from F5Weather</a></div>

Our hurricane tracking map monitors for any current or forecast tropical disturbances in the Atlantic. (See our Pacific Hurricane Tracker) Various hurricane models will draw a 'spaghetti plot' in the Atlantic Basin when a disturbance is forecast or exists, showing the system's forecast track. Once a storm has developed, the National Hurricane Center will forecast their official track. This will show up on the map along with the storm's current intensity, track and name. We will also plot some of the storm's vitals and of course the spaghetti plots from the models along with the NHC forecast track will give you an idea of where it's heading, and its forecast intensity with time.

View more weather maps.

F5Weather Maps splash

To view the latest computer models, visit f5wx.com for access to the weather maps and guidance that meteorologists use to make their forecasts.
 
Get access to:
  • European ECMWF HRES
  • American GFS
  • Canadian GDPS GEM
  • German DWD ICON
  • British MetOffice's UKMET Unified Model
  • American NAM
  • American HRRR
  • American NBM - National Blend of Models
  • GEFS, GEPS, MOGREPS & European Ensembles
  • Probabilities & Averages
  • 3-Ensemble Mean & more!
View Skew-T soundings, textual data tables for your location, and of course maps! Weather forecast maps of the basics like temperature, wind, pressure, humidity, dew point, cloud cover, simulated radar, travel weather, rainfall and snow are available. More advanced users can also get use out of our severe weather & tornado threat maps, as well as upper air & shear graphics.
 
See the latest forecast data as the models update.
 
F5Weather Maps

Climate Summary
(made with AI, use with caution)
Janesville, WI Climate Summary

Average Annual Temperature

47.1 °F (8.4 °C)

Average Annual High Temperature

56.1 °F (13.4 °C)

Average Annual Low Temperature

38.1 °F (3.4 °C)

Average Annual Precipitation

33.78 inches (858.5 mm)

Average Annual Snowfall

42.6 inches (108.2 cm)

Climate Zone

Humid continental climate (Köppen Dfa)

Growing Season

165 days (April 22     •   October 15)

Hardiness Zone

5b

Precipitation

    •   Janesville receives an average of 33.78 inches of precipitation per year, which is evenly distributed throughout the year.
    •   The wettest month is June, with an average of 4.62 inches of rain.
    •   The driest month is February, with an average of 1.72 inches of rain.

Temperature

    •   The average annual temperature in Janesville is 47.1 °F (8.4 °C).
    •   The average high temperature is 56.1 °F (13.4 °C).
    •   The average low temperature is 38.1 °F (3.4 °C).
    •   The highest temperature ever recorded in Janesville was 109 °F (42.8 °C) on July 13, 1936.
    •   The lowest temperature ever recorded in Janesville was -39 °F (-39.4 °C) on January 20, 1985.

Snowfall

    •   Janesville receives an average of 42.6 inches of snow per year.
    •   The snowiest month is January, with an average of 10.4 inches of snow.
    •   The least snowy month is July, with an average of 0.0 inches of snow.

Climate Zone

    •   Janesville is located in a humid continental climate zone (Köppen Dfa).
    •   This climate zone is characterized by hot, humid summers and cold, snowy winters.
    •   The average annual temperature is between 32 °F (0 °C) and 47 °F (8.3 °C).
    •   The average annual precipitation is between 20 and 39 inches (510 and 990 mm).

Growing Season

    •   The growing season in Janesville lasts for 165 days, from April 22 to October 15.
    •   This is long enough to grow a variety of crops, including corn, soybeans, wheat, and oats.

Hardiness Zone

    •   Janesville is located in hardiness zone 5b.
    •   This means that the average annual minimum temperature is between -15 °F (-26.1 °C) and -10 °F (-23.3 °C).
    •   This zone is suitable for growing a variety of plants, including roses, daylilies, and hostas.

Facts & Historical Information
(made with AI, use with caution)
Natural History

    •   Janesville is located on the Rock River, which was once a major transportation route for Native Americans and fur traders.

    •   The city is home to the Rotary Botanical Gardens, a 20-acre oasis with over 20,000 plants.

    •   The nearby Kettle Moraine State Forest is a vast wilderness area with glacial formations, lakes, and hiking trails.

Science

    •   Janesville was the birthplace of inventor Thomas Edison in 1847.

    •   The city is home to the Janesville Performing Arts Center, which hosts a variety of science-themed events, including lectures and demonstrations.

    •   The University of Wisconsin-Whitewater has a strong science department, with research focuses on environmental science, biotechnology, and more.

Personalities

    •   Besides Thomas Edison, Janesville has produced other notable figures, including:

    •   Frank Lloyd Wright, renowned architect

    •   John Muir, naturalist and conservationist

    •   Zona Gale, Pulitzer Prize-winning author

Tourist Attractions
1.Traders Point Creamery

is a family-owned and operated dairy farm that offers tours, a petting zoo, and a restaurant. Visitors can learn about the dairy industry and see how cows are milked. The petting zoo is home to a variety of animals, including goats, sheep, pigs, and chickens. The restaurant serves breakfast, lunch, and dinner, and features a menu that includes fresh dairy products.

2.The Rotary Botanical Gardens

is a 20-acre botanical garden that features a variety of gardens, including a rose garden, a Japanese garden, and a butterfly garden. Visitors can stroll through the gardens and enjoy the beauty of the flowers and plants. The garden also has a gift shop and a cafe.

3.The Janesville Performing Arts Center

is a performing arts center that hosts a variety of events, including concerts, plays, and dance performances. The center has a 1,200-seat auditorium and a 200-seat black box theater. Visitors can enjoy a variety of performances throughout the year.

Nearby Cities:

Milton, WI
Edgerton, WIClinton, WI
Beloit, WIOrfordville, WI
South Beloit, ILRichmond, WI
Rockton, ILEvansville, WI
Darien, WILake Koshkonong, WI
Whitewater, WIRoscoe, IL
Sharon, WIDelavan, WI
Brodhead, WIFort Atkinson, WI
Chicago, IL
Milwaukee, WIMadison, WI
Aurora, ILRockford, IL
Joliet, ILNaperville, IL
Elgin, ILDavenport, IA
Kenosha, WIWaukegan, IL
West Town, IL