Our Proprietary 10-Day Forecast

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Current warnings over Delavan Lake, Wisconsin
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<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.

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Current radar over Delavan Lake, Wisconsin red dot
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<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.

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Current satellite over Delavan Lake, Wisconsin red dot
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<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.

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Current surface weather map around Walworth 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.

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Temperatures right now near Delavan Lake, 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 Delavan Lake, WI please see our current conditions data on the left and right side of this page, or go to our current conditions page.

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Surface wind speed map over Delavan Lake, 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 Delavan Lake, WI, see the current conditions data on the left and right side of this page, or go to our current conditions page.

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Regional 24 hour rainfall expected near Delavan Lake, 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.

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Area snowfall accumulation expected around Walworth 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.

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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.

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Atlantic Hurricane and Tropical Storm Tracking Map
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<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.

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To view the latest computer models, visit f5wx.com for access to the weather maps and guidance that meteorologists use to make their forecasts.
 
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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.
 
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Climate Summary
(made with AI, use with caution)
Delavan Lake, Wisconsin Climate Summary

General Climate

    •   Delavan Lake, Wisconsin experiences a humid continental climate, characterized by warm, humid summers and cold, snowy winters.
    •   The area is influenced by the Great Lakes, which moderate temperatures and provide moisture.
    •   The average annual temperature is 47.1°F (8.4°C).
    •   The average annual precipitation is 34.6 inches (879 mm).

Summer

    •   Summers in Delavan Lake are typically warm and humid, with average temperatures in the mid-70s°F (low 20s°C).
    •   The warmest month is July, with an average temperature of 77.6°F (25.3°C).
    •   Summer precipitation is moderate, with an average of 3.5 inches (89 mm) of rain per month.

Winter

    •   Winters in Delavan Lake are cold and snowy, with average temperatures in the mid-20s°F (low -4°C).
    •   The coldest month is January, with an average temperature of 21.9°F (-5.6°C).
    •   Winter precipitation is significant, with an average of 6.2 inches (157 mm) of snow per month.

Spring and Fall

    •   Spring and fall in Delavan Lake are transitional seasons, with temperatures gradually warming or cooling.
    •   Spring precipitation is typically higher than fall precipitation, with an average of 3.8 inches (97 mm) of rain per month in spring and 2.9 inches (74 mm) of rain per month in fall.

Climate Change

    •   Like many parts of the world, Delavan Lake is experiencing the effects of climate change.
    •   Average temperatures have been rising in recent decades, and precipitation patterns have become more variable.
    •   These changes are expected to continue in the future, with more extreme weather events and changes in plant and animal life.

Overall, Delavan Lake, Wisconsin has a humid continental climate with warm, humid summers and cold, snowy winters. Climate change is expected to bring more extreme weather events and changes in plant and animal life to the area in the future.

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

    •   Delavan Lake is a glacial lake formed over 12,000 years ago.

    •   It is the second-largest lake in Walworth County, covering 2,660 acres.

    •   The lake is home to a diverse ecosystem, including over 200 species of birds and 50 species of fish.

Science

    •   In the 19th century, Delavan Lake was a popular destination for scientists studying natural history.

    •   The lake's unique geology and ecology attracted researchers from institutions like the Smithsonian Institution and the University of Wisconsin-Madison.

    •   Today, the lake continues to be a valuable resource for scientific research on water quality, aquatic ecology, and climate change.

Personalities

  • John Brinkworth:

    A pioneer settler who established a trading post on the lake in 1836.

  • Horace Greeley:

    A famous journalist and abolitionist who visited Delavan Lake in 1856 and wrote about its beauty.

  • John Muir:

    The renowned naturalist and conservationist visited Delavan Lake in 1874 and was inspired by its natural wonders.

    • Tourist Attractions
    1.Delavan Lake

    is a popular destination for swimming, boating, fishing, and picnicking. The lake is surrounded by a scenic park with a walking trail and a playground.

    2.The Riviera Beach Resort

    is a historic resort located on the shores of Delavan Lake. The resort offers a variety of amenities, including a swimming pool, a fitness center, and a restaurant.

    3.The Lake Lawn Resort

    is another historic resort located on the shores of Delavan Lake. The resort offers a variety of amenities, including a swimming pool, a fitness center, and a spa.

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