Our Proprietary 10-Day Forecast

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Current warnings over Winchester, Illinois
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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 Winchester, Illinois 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 Winchester, Illinois 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 Scott County, IL

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 Winchester, Illinois

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 Winchester, IL 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 Winchester, IL

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 Winchester, IL, 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 Winchester, Illinois

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 Scott County, Illinois

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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  • 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.
 
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Climate Summary
(made with AI, use with caution)
Winchester, Illinois Climate Summary

Temperature

    •   Average annual temperature: 53.2°F (11.8°C)
    •   Average January temperature: 29.1°F (-1.6°C)
    •   Average July temperature: 76.9°F (24.9°C)
    •   Record high temperature: 117°F (47.2°C)
    •   Record low temperature: -38°F (-38.9°C)

Precipitation

    •   Average annual precipitation: 39.06 inches (99.2 cm)
    •   Average number of days with precipitation: 103
    •   Average annual snowfall: 18.6 inches (47.2 cm)
    •   Record 24-hour snowfall: 14.0 inches (35.6 cm)

Humidity

    •   Average annual relative humidity: 73%
    •   Average July relative humidity: 76%
    •   Average January relative humidity: 70%

Wind

    •   Average annual wind speed: 10.2 mph (16.4 km/h)
    •   Average July wind speed: 10.8 mph (17.4 km/h)
    •   Average January wind speed: 9.6 mph (15.4 km/h)

Climate Type

    •   Humid continental climate (Köppen Dfa)

Climate Summary

Winchester, Illinois has a humid continental climate, with hot, humid summers and cold, snowy winters. The average annual temperature is 53.2°F (11.8°C), with average January temperatures of 29.1°F (-1.6°C) and average July temperatures of 76.9°F (24.9°C). The average annual precipitation is 39.06 inches (99.2 cm), with an average of 103 days with precipitation. The average annual snowfall is 18.6 inches (47.2 cm). The average annual relative humidity is 73%, with an average July relative humidity of 76% and an average January relative humidity of 70%. The average annual wind speed is 10.2 mph (16.4 km/h), with an average July wind speed of 10.8 mph (17.4 km/h) and an average January wind speed of 9.6 mph (15.4 km/h).

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

    •   Winchester is situated on the bluffs overlooking the Illinois River, offering breathtaking views of the river valley.

    •   The area is home to a diverse ecosystem, including forests, wetlands, and prairies.

    •   The Winchester Lake State Fish and Wildlife Area is a popular spot for birdwatching, fishing, and hiking.

Science

    •   In 1942, the Winchester Research Station was established by the University of Illinois to study the effects of pesticides on wildlife.

    •   Scientists at the station have made significant contributions to the field of ecotoxicology.

    •   The station continues to be a center for research and education in environmental science.

Personalities

  • William Henry Harrison:

    The ninth president of the United States lived in Winchester from 1811 to 1814.

  • John Hay:

    The Secretary of State under Presidents McKinley and Roosevelt, was born in Winchester in 1838.

  • Carl Sandburg:

    The Pulitzer Prize-winning poet and biographer spent his childhood in Winchester and often wrote about the town in his work.

    • Tourist Attractions
    1.Lincoln's New Salem State Historic Site:

    A living history museum that recreates the village where Abraham Lincoln lived from 1831 to 1834. Visitors can explore log cabins, a blacksmith shop, a gristmill, and other buildings from the era.

    2.Apple River Canyon State Park:

    A scenic park known for its towering sandstone bluffs, waterfalls, and hiking trails. Visitors can hike, camp, fish, and enjoy the natural beauty of the canyon.

    3.Winchester Square:

    The historic town square of Winchester, which features a variety of shops, restaurants, and historic buildings. Visitors can stroll through the square, visit the Morgan County Courthouse, or enjoy a meal at one of the local restaurants.

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