Acton, Massachusetts Weather
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Weather Forecast for Acton, Massachusetts : Middlesex County
Issued: 6:25 am EDT Jul 13, 2025 Latitude: 42.4850931 Longitude: -71.43284 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Monday Tuesday Wednesday Thursday Friday Saturday
Mostly Sunny on Today Morning Fog on Tonight 30% chance of thunderstorms on Monday Mostly Sunny on Tuesday Sunny on Wednesday 30% chance of thunderstorms on Thursday 30% chance of thunderstorms on Friday Mostly Sunny on Saturday
High: 84°F Low: 66°F High: 86°F High: 90°F High: 92°F High: 89°F High: 89°F High: 85°F
Low: 70°F Low: 70°F Low: 73°F Low: 73°F Low: 68°F  
Mostly Sunny Morning Fog Thunderstorms Mostly Sunny Sunny Thunderstorms Thunderstorms Mostly Sunny
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Current Conditions at
FITCHBURG - (KFIT)
70°
Cloudy
as of 9:02 AM EDST
Rel. Humidity: 83%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 30.15 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 1700ft
Mostly Sunny on Today Today... Mostly sunny, with a high near 84. South wind 3 to 6 mph.
Morning Fog on Tonight Tonight... Patchy fog after 2am. Otherwise, increasing clouds, with a low around 66. Southeast wind around 6 mph becoming calm in the evening.
30% chance of thunderstorms Monday Monday... A chance of showers, with thunderstorms also possible after 2pm. Patchy fog before 7am. Otherwise, partly sunny, with a high near 86. Southwest wind 3 to 6 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
30% chance of thunderstorms Monday Night Monday Night... A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and midnight. Mostly cloudy, with a low around 70. Light southwest wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Mostly Sunny on Tuesday Tuesday... Mostly sunny and hot, with a high near 90. Calm wind becoming southwest around 5 mph in the afternoon.
Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 70. Light southwest wind.
Sunny on Wednesday Wednesday... Sunny and hot, with a high near 92. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 73. Southwest wind 3 to 6 mph.
30% chance of thunderstorms Thursday Thursday... A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 89. Southwest wind 6 to 8 mph. Chance of precipitation is 30%.
30% chance of thunderstorms Thursday Night Thursday Night... A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and midnight. Mostly cloudy, with a low around 73. Southwest wind 3 to 6 mph. Chance of precipitation is 30%.
30% chance of thunderstorms Friday Friday... A chance of showers and thunderstorms. Partly sunny, with a high near 89. West wind 5 to 7 mph. Chance of precipitation is 30%.
30% chance of thunderstorms Friday Night Friday Night... A chance of showers and thunderstorms. Partly cloudy, with a low around 68. Light northwest wind. Chance of precipitation is 30%.
Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 85. Light and variable wind becoming north around 5 mph in the morning.
Sun Almanac for Acton, Massachusetts
Sunrise: 05:21 AM
Sunset: 8:22 PM
Civil Sunrise:04:47 AM
Civil Sunset: 8:56 PM
Nautical Sunrise: 04:04 AM
Nautical Sunset: 9:39 PM
Astro Sunrise: 03:13 AM
Astro Sunset: 10:30 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.