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.

Mostly Cloudy

64°F

18°C

Humidity 68%
Wind Speed W 5 mph
Barometer 29.78 in (1008.4 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 21 Jun 12:52 am EDT
Extended Forecast for

Groton MA

  • Overnight

    Overnight: Mostly clear, with a low around 57. Light west wind.

    Low: 57 °F

    Mostly Clear

  • Sunday

    Sunday: A chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 78. West wind 3 to 7 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Sunny then
    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 56. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 56 °F

    Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: Showers likely, mainly after 5pm. Partly sunny, with a high near 80. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    High: 80 °F

    Partly Sunny
    then Showers
    Likely

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Low around 56. Light east wind. Chance of precipitation is 100%.

    Low: 56 °F

    Showers

  • Tuesday

    Tuesday: Showers likely before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then a slight chance of showers after 2pm. Mostly cloudy, with a high near 79. North wind around 6 mph. Chance of precipitation is 60%.

    High: 79 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 59. Calm wind.

    Low: 59 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 85. Light northwest wind.

    High: 85 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 59. Calm wind.

    Low: 59 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 57. Light west wind.
Sunday
A chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 78. West wind 3 to 7 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 56. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
Showers likely, mainly after 5pm. Partly sunny, with a high near 80. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Monday Night
Showers and possibly a thunderstorm. Low around 56. Light east wind. Chance of precipitation is 100%.
Tuesday
Showers likely before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then a slight chance of showers after 2pm. Mostly cloudy, with a high near 79. North wind around 6 mph. Chance of precipitation is 60%.
Tuesday Night
Mostly clear, with a low around 59. Calm wind.
Wednesday
Sunny, with a high near 85. Light northwest wind.
Wednesday Night
Mostly clear, with a low around 59. Calm wind.
Thursday
Mostly sunny, with a high near 84. Calm wind becoming south 5 to 7 mph in the afternoon.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 59. Light south wind. Chance of precipitation is 40%.
Friday
A chance of showers. Partly sunny, with a high near 82. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 50%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 60. Calm wind. Chance of precipitation is 40%.
Saturday
A chance of showers. Partly sunny, with a high near 84. Calm wind becoming west 5 to 7 mph in the afternoon. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Groton MA
 42.63°N 71.58°W (Elev. 217 ft)
Last Update:
10:11 pm EDT Jun 20, 2026
Forecast Valid:
1am EDT Jun 21, 2026-6pm EDT Jun 27, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation