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.

Fair

42°F

6°C

Humidity 38%
Wind Speed N 8 mph
Barometer 29.99 in (1015.7 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 21 Mar 6:52 pm EDT
Extended Forecast for

Groton MA

  • Tonight

    Tonight: A slight chance of rain before 2am, then a chance of snow after 3am. Mostly cloudy, with a low around 33. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 33 °F

    Slight Chance
    Rain then
    Chance
    Rain/Snow

  • Sunday

    Sunday: Snow likely before 8am, then rain. High near 43. South wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 43 °F

    Rain/Snow
    then Rain

  • Sunday Night

    Sunday Night: Rain likely before 5am, then a chance of rain and snow. Cloudy, with a low around 32. North wind 3 to 6 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 32 °F

    Rain Likely
    then
    Rain/Snow
    Likely

  • Monday

    Monday: A chance of snow showers before 3pm, then a chance of rain showers. Mostly cloudy, with a high near 39. North wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    High: 39 °F

    Chance Snow
    then Chance
    Rain/Snow

  • Monday Night

    Monday Night: A chance of snow showers, mainly before midnight. Mostly cloudy, with a low around 27. Northwest wind 3 to 5 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    Low: 27 °F

    Chance Snow
    Showers then
    Slight Chance
    Snow Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 44. Calm wind becoming west around 5 mph in the afternoon.

    High: 44 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 27. Southwest wind 3 to 6 mph.

    Low: 27 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 49. West wind 6 to 11 mph, with gusts as high as 22 mph.

    High: 49 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 27. West wind 3 to 6 mph.

    Low: 27 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of rain before 2am, then a chance of snow after 3am. Mostly cloudy, with a low around 33. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. Little or no snow accumulation expected.
Sunday
Snow likely before 8am, then rain. High near 43. South wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 90%. Little or no snow accumulation expected.
Sunday Night
Rain likely before 5am, then a chance of rain and snow. Cloudy, with a low around 32. North wind 3 to 6 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Monday
A chance of snow showers before 3pm, then a chance of rain showers. Mostly cloudy, with a high near 39. North wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Monday Night
A chance of snow showers, mainly before midnight. Mostly cloudy, with a low around 27. Northwest wind 3 to 5 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Tuesday
Mostly sunny, with a high near 44. Calm wind becoming west around 5 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 27. Southwest wind 3 to 6 mph.
Wednesday
Partly sunny, with a high near 49. West wind 6 to 11 mph, with gusts as high as 22 mph.
Wednesday Night
Mostly cloudy, with a low around 27. West wind 3 to 6 mph.
Thursday
A chance of rain and snow before 11am, then a chance of rain between 11am and 5pm, then a chance of rain and snow after 5pm. Mostly cloudy, with a high near 51. South wind 5 to 8 mph. Chance of precipitation is 30%.
Thursday Night
Rain and snow likely. Mostly cloudy, with a low around 34. Southwest wind around 7 mph. Chance of precipitation is 70%.
Friday
A chance of rain and snow. Mostly sunny, with a high near 46. Northwest wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Friday Night
Mostly clear, with a low around 20. Northwest wind around 6 mph.
Saturday
Sunny, with a high near 41. West wind 5 to 7 mph.
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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:
6:13 pm EDT Mar 21, 2026
Forecast Valid:
7pm EDT Mar 21, 2026-6pm EDT Mar 28, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation