National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Fitchburg, Fitchburg Municipal Airport (KFIT)

Lat: 42.55°NLon: 71.76°WElev: 348ft.

Overcast

78°F

26°C

Humidity 67%
Wind Speed S 6 mph
Barometer 30.13 in (1020.2 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 17 Sep 3:52 pm EDT
Extended Forecast for

Groton MA

  • This Afternoon

    This Afternoon: A chance of showers, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 76. South wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Chance
    Showers

  • Tonight

    Tonight: Showers and thunderstorms likely before midnight, then a chance of showers. Patchy fog before midnight, then patchy fog after 1am. Otherwise, mostly cloudy, with a low around 63. Light and variable wind. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 63 °F

    Showers
    Likely and
    Patchy Fog

  • Friday

    Friday: Sunny, with a high near 76. Northwest wind 7 to 9 mph, with gusts as high as 21 mph.

    High: 76 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 44. North wind 3 to 7 mph.

    Low: 44 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 67. Calm wind.

    High: 67 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 48. Calm wind.

    Low: 48 °F

    Partly Cloudy

  • Sunday

    Sunday: Showers likely, mainly after 3pm. Mostly cloudy, with a high near 62. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 60%.

    High: 62 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely, mainly before midnight. Mostly cloudy, with a low around 49. Calm wind. Chance of precipitation is 70%.

    Low: 49 °F

    Showers
    Likely

  • Monday

    Monday: Partly sunny, with a high near 66. Northeast wind 5 to 7 mph.

    High: 66 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A chance of showers, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 76. South wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely before midnight, then a chance of showers. Patchy fog before midnight, then patchy fog after 1am. Otherwise, mostly cloudy, with a low around 63. Light and variable wind. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Sunny, with a high near 76. Northwest wind 7 to 9 mph, with gusts as high as 21 mph.
Friday Night
Partly cloudy, with a low around 44. North wind 3 to 7 mph.
Saturday
Mostly sunny, with a high near 67. Calm wind.
Saturday Night
Partly cloudy, with a low around 48. Calm wind.
Sunday
Showers likely, mainly after 3pm. Mostly cloudy, with a high near 62. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 60%.
Sunday Night
Showers likely, mainly before midnight. Mostly cloudy, with a low around 49. Calm wind. Chance of precipitation is 70%.
Monday
Partly sunny, with a high near 66. Northeast wind 5 to 7 mph.
Monday Night
Mostly cloudy, with a low around 46. North wind 3 to 5 mph.
Tuesday
Partly sunny, with a high near 59. North wind 7 to 9 mph.
Tuesday Night
Partly cloudy, with a low around 43. North wind 5 to 7 mph.
Wednesday
Mostly sunny, with a high near 60. East wind 9 to 11 mph, with gusts as high as 21 mph.
Wednesday Night
Partly cloudy, with a low around 44. North wind around 6 mph.
Thursday
Mostly sunny, with a high near 61.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Groton MA
 42.6°N 71.58°W (Elev. 299 ft)
Last Update:
2:49 pm EDT Sep 17, 2026
Forecast Valid:
3pm EDT Sep 17, 2026-6pm EDT Sep 24, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation