Our Proprietary 10-Day Forecast

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Current warnings over Collinsville, Connecticut
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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 Collinsville, Connecticut 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 Collinsville, Connecticut 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 Hartford County, CT

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 Collinsville, Connecticut

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 Collinsville, CT 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 Collinsville, CT

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 Collinsville, CT, 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 Collinsville, Connecticut

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 Hartford County, Connecticut

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.
 
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.
 
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Climate Summary
(made with AI, use with caution)
Collinsville, CT Climate Summary

General Climate

    •   Collinsville, CT has a humid continental climate, with warm, humid summers and cold, snowy winters.
    •   The average annual temperature is 50.6°F.
    •   The average annual precipitation is 47.2 inches.

Summer

    •   The average summer temperature is 72.6°F.
    •   The average high temperature in July is 84.4°F.
    •   The average low temperature in July is 60.8°F.
    •   The average precipitation in July is 4.0 inches.

Winter

    •   The average winter temperature is 28.6°F.
    •   The average high temperature in January is 37.4°F.
    •   The average low temperature in January is 19.8°F.
    •   The average precipitation in January is 3.7 inches.

Spring and Fall

    •   The average spring temperature is 46.8°F.
    •   The average high temperature in April is 60.6°F.
    •   The average low temperature in April is 33.0°F.
    •   The average precipitation in April is 3.9 inches.
    •   The average fall temperature is 52.4°F.
    •   The average high temperature in October is 66.0°F.
    •   The average low temperature in October is 38.8°F.
    •   The average precipitation in October is 3.6 inches.

Climate Extremes

    •   The highest temperature ever recorded in Collinsville, CT was 104°F on July 22, 1926.
    •   The lowest temperature ever recorded in Collinsville, CT was -31°F on February 16, 1943.
    •   The greatest amount of precipitation ever recorded in Collinsville, CT in a single month was 14.13 inches in October 1955.
    •   The greatest amount of snowfall ever recorded in Collinsville, CT in a single month was 43.5 inches in February 1969.

Climate Change

    •   The climate of Collinsville, CT is changing, as it is in the rest of the world.
    •   The average annual temperature has increased by about 2°F since the late 19th century.
    •   The average annual precipitation has increased by about 5 inches since the late 19th century.
    •   The number of days with heavy precipitation (more than 1 inch) has increased since the late 19th century.
    •   The number of days with extreme heat (above 90°F) has increased since the late 19th century.
    •   The number of days with extreme cold (below 0°F) has decreased since the late 19th century.

Impacts of Climate Change

    •   The changing climate is having a number of impacts on Collinsville, CT, including:
    •   More frequent and severe heat waves
    •   More frequent and severe droughts
    •   More frequent and severe flooding
    •   Increased erosion
    •   Changes in plant and animal life
    •   Increased risk of disease

Adaptation and Mitigation

    •   The town of Collinsville is taking a number of steps to adapt to and mitigate the impacts of climate change, including:
    •   Investing in energy efficiency and renewable energy
    •   Improving stormwater management
    •   Planting trees and other vegetation
    •   Educating the public about climate change

Conclusion

The climate of Collinsville, CT is changing, and the town is taking steps to adapt to and mitigate the impacts of climate change.

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

    •   Collinsville is home to the Salmon Brook Nature Center, a 200-acre preserve with diverse habitats, including forests, wetlands, and meadows.

    •   The Farmington River flows through the town, providing a vital habitat for fish and wildlife.

    •   Collinsville is part of the Metacomet Ridge, a geological formation known for its dramatic cliffs and scenic vistas.

Historical Personalities

    •   Samuel Collins, founder of Collinsville, built the first axe factory in the United States in 1826.

    •   The town was a major center for the production of axes, scythes, and other tools during the 19th century.

    •   Samuel Colt, inventor of the revolver, had a factory in Collinsville from 1847 to 1855.

    •   Harriet Beecher Stowe, author of \

Tourist Attractions
1.The Mark Twain House & Museum

is a National Historic Landmark that was the home of the famous author Mark Twain from 1874 to 1891. The museum offers tours of the house, which has been restored to its original appearance, as well as exhibits on Twain's life and work.

2.The Harriet Beecher Stowe Center

is a museum and research center dedicated to the life and work of Harriet Beecher Stowe, the author of the anti-slavery novel \

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