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

75°F

24°C

Humidity 71%
Wind Speed S 6 mph
Barometer 30.14 in (1020.6 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 13 Jul 10:52 am EDT
Extended Forecast for

Groton MA

  • Today

    Today: Mostly sunny, with a high near 84. South wind 3 to 6 mph.

    High: 84 °F

    Mostly Sunny

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 65. Southeast wind around 5 mph becoming calm in the evening.

    Low: 65 °F

    Partly Cloudy
    then Patchy
    Fog

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after 2pm. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 85. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Chance
    Showers and
    Patchy Fog
    then Chance
    T-storms

  • 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 69. 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: 69 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny and hot, with a high near 90. Light west wind.

    High: 90 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 68. Calm wind.

    Low: 68 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 92. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 92 °F

    Hot

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 71. Southwest wind 3 to 5 mph.

    Low: 71 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 89. Southwest wind 5 to 8 mph. Chance of precipitation is 30%.

    High: 89 °F

    Partly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 84. South wind 3 to 6 mph.
Tonight
Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 65. Southeast wind around 5 mph becoming calm in the evening.
Monday
A chance of showers, with thunderstorms also possible after 2pm. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 85. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
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 69. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
Mostly sunny and hot, with a high near 90. Light west wind.
Tuesday Night
Mostly clear, with a low around 68. Calm wind.
Wednesday
Sunny and hot, with a high near 92. Calm wind becoming southwest around 6 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 71. Southwest wind 3 to 5 mph.
Thursday
A chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 89. Southwest wind 5 to 8 mph. Chance of precipitation is 30%.
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 72. Southwest wind 3 to 5 mph. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 88. West wind 5 to 7 mph. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 66. Light northwest wind. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 84. Calm wind becoming west around 5 mph in the afternoon.
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ABOUT THIS FORECAST

 
Point Forecast:
Groton MA
 42.6°N 71.58°W (Elev. 299 ft)
Last Update:
6:25 am EDT Jul 13, 2025
Forecast Valid:
11am EDT Jul 13, 2025-6pm EDT Jul 19, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation