Our Proprietary 10-Day Forecast

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Current warnings over Acton, Massachusetts
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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 Acton, Massachusetts 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 Acton, Massachusetts 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 Middlesex County, MA

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 Acton, Massachusetts

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 Acton, MA 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 Acton, MA

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 Acton, MA, 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 Acton, Massachusetts

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 Middlesex County, Massachusetts

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)
Acton, Massachusetts

Climate Summary

Acton, Massachusetts, experiences a humid continental climate with four distinct seasons.

Temperature

    •   Average annual temperature: 49.5°F (9.7°C)
    •   Average summer high: 84°F (29°C)
    •   Average winter low: 19°F (-7°C)

Precipitation

    •   Average annual precipitation: 44.9 inches (1,141 mm)
    •   Rain is distributed fairly evenly throughout the year, with slightly more precipitation in the spring and summer.
    •   Snowfall averages 48.4 inches (123 cm) per year.

Seasons

Spring (March-May)


    •   Temperatures gradually warm up, with average highs in the 50s and 60s°F (10s and 15s°C).
    •   Precipitation increases slightly, with frequent rain and occasional thunderstorms.

Summer (June-August)


    •   Warmest season, with average highs in the 80s°F (20s°C).
    •   Humidity levels are high, leading to occasional heat waves.
    •   Precipitation is moderate, with thunderstorms and occasional heavy downpours.

Fall (September-November)


    •   Temperatures cool down, with average highs in the 60s and 70s°F (10s and 20s°C).
    •   Precipitation decreases, but there can still be occasional rain and fog.
    •   Foliage colors change to vibrant reds, oranges, and yellows.

Winter (December-February)


    •   Coldest season, with average highs in the 30s and 40s°F (0s and 5s°C).
    •   Snowfall is common, with occasional blizzards.
    •   Temperatures can drop below freezing, especially at night.

Other Climate Features

    •   Acton is located in USDA Plant Hardiness Zone 6a, which means it has a minimum average winter temperature of -10 to -5°F (-23 to -21°C).
    •   The growing season typically lasts from late April to late October.
    •   The area is prone to occasional severe thunderstorms, hail, and tornadoes.

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

    •   Acton is home to the Great Meadows National Wildlife Refuge, a 3,000-acre sanctuary for migratory birds and other wildlife.

    •   The town boasts a diverse ecosystem, including wetlands, forests, and grasslands, supporting a wide variety of flora and fauna.

Science

    •   Acton was the birthplace of the American Academy of Arts and Sciences, founded in 1780 to promote scientific inquiry.

    •   The town is home to the MIT Lincoln Laboratory, a research and development center for the U.S. Department of Defense.

    •   Acton's Concord River was a key site in the development of hydraulic engineering in the 19th century.

Personalities

    •   Henry David Thoreau, the naturalist and philosopher, spent time in Acton and wrote about its natural beauty in his journals.

    •   Elizabeth Freeman, a former slave who gained her freedom through a landmark legal case, lived in Acton from 1781 until her death in 1829.

    •   Samuel Prescott, a prominent figure in the American Revolution, was born in Acton in 1751.

Tourist Attractions
1.The Discovery Museums

is a science and technology museum with exhibits on everything from the human body to outer space. There's also a planetarium and a live animal exhibit.

2.The Fruitlands Museum

is a historic farm and museum that tells the story of the American transcendentalist movement. The museum has a collection of paintings, sculptures, and other artifacts from the period.

3.The Nashoba Valley Winery

is a family-owned winery that offers tours and tastings of their award-winning wines. The winery also has a restaurant and a gift shop.

Nearby Cities:

West Concord, MA
Maynard, MAConcord, MA
Stow, MABoxborough, MA
Littleton Common, MACarlisle, MA
Sudbury, MAWestford, MA
Lincoln, MABedford, MA
Harvard, MAWayland, MA
Chelmsford, MAHudson, MA
Bolton, MABillerica, MA
Boston, MA
South Boston, MAWorcester, MA
Providence, RISpringfield, MA
New Haven, CTHartford, CT
Lowell, MACambridge, MA
Manchester, NHWaterbury, CT
Albany, NY