Our Proprietary 10-Day Forecast

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Current warnings over Forreston, 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 Forreston, 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 Forreston, 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 Ogle 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 Forreston, 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 Forreston, 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 Forreston, 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 Forreston, 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 Forreston, 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 Ogle 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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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)
Forreston, Illinois has a humid continental climate, with hot, humid summers and cold, snowy winters. The average temperature in July is 75°F (24°C), while the average temperature in January is 20°F (-7°C). The average annual precipitation is 37 inches (94 cm), with the majority of it falling in the spring and summer months.

Summer

Summers in Forreston are hot and humid, with average temperatures in the mid-80s Fahrenheit (29-30°C). The humidity can make it feel even hotter, with heat index values often reaching over 100°F (38°C). There is also a chance of thunderstorms during the summer months, especially in the late afternoon or evening.

Winter

Winters in Forreston are cold and snowy, with average temperatures in the mid-20s Fahrenheit (-4 to -3°C). The coldest months are January and February, when temperatures can drop below 0°F (-18°C). Snowfall is common during the winter months, with an average of 30 inches (76 cm) per year.

Spring and Fall

Spring and fall in Forreston are generally mild, with average temperatures in the 50s and 60s Fahrenheit (10-18°C). These seasons are also known for their beautiful weather, with plenty of sunshine and mild temperatures.

Climate Change

The climate in Forreston is changing, as it is in many parts of the world. The average temperature has increased by about 1°F (0.6°C) over the past century, and the number of extreme weather events, such as heat waves and heavy rainfall, has also increased. These changes are expected to continue in the future, and they could have a significant impact on the environment and the people who live in Forreston.

Here is a summary of the climate data for Forreston, Illinois:

    •   Average temperature

50°F (10°C)

    •   Average annual precipitation

37 inches (94 cm)

    •   Average snowfall

30 inches (76 cm)

    •   Number of sunny days

200 per year

    •   Average humidity

70%

Overall, Forreston has a moderate climate, with four distinct seasons. The summers are hot and humid, the winters are cold and snowy, and the spring and fall are mild.

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

    •   Forreston lies within the Driftless Area, a region that escaped the last continental glaciation, preserving unique flora and fauna.

    •   The nearby Yellow Creek State Forest is home to a diverse ecosystem, including rare plants like the yellow lady's slipper orchid.

Science

    •   In 1914, Forreston became the first town in Illinois to install a municipal water treatment plant.

    •   The town is home to the Forreston Observatory, one of the oldest and largest amateur astronomical observatories in the Midwest.

Personalities

  • Joseph B. Forrer:

    A prominent businessman and politician who founded Forreston in 1856.

  • Dr. John A. Hartman:

    A physician and naturalist who discovered the yellow lady's slipper orchid in Yellow Creek State Forest.

  • Dr. Charles A. Lindbergh:

    The aviation pioneer spent his childhood summers in Forreston, where his family had a farm.

    • Tourist Attractions
    1.Lowden State Park:

    A scenic park with a 1,500-acre lake, hiking trails, camping, and fishing.

    2.White Pines Forest State Nature Preserve:

    A 385-acre preserve featuring a majestic stand of white pine trees, hiking trails, and a scenic overlook.

    3.Sinnissippi Gardens:

    A 40-acre botanical garden with a Japanese garden, rose garden, and other themed gardens.

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