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

70°F

21°C

Humidity 66%
Wind Speed S 5 mph
Barometer 30.21 in (1023.0 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 12 Jul 11:52 pm EDT
Extended Forecast for

Groton MA

  • Overnight

    Overnight: Mostly clear, with a low around 61. Southwest wind 3 to 7 mph.

    Low: 61 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 89. Southwest wind 5 to 9 mph.

    High: 89 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 67. Southwest wind 5 to 7 mph.

    Low: 67 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 96. Heat index values as high as 99. West wind 6 to 13 mph, with gusts as high as 26 mph.

    High: 96 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 76. West wind around 9 mph, with gusts as high as 21 mph.

    Low: 76 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny and hot, with a high near 95. Northwest wind 8 to 10 mph, with gusts as high as 22 mph.

    High: 95 °F

    Hot

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 66. Northwest wind around 5 mph becoming calm in the evening.

    Low: 66 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 89. Light west wind increasing to 5 to 9 mph in the morning. Winds could gust as high as 21 mph.

    High: 89 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 64. West wind around 5 mph becoming calm in the evening.

    Low: 64 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 61. Southwest wind 3 to 7 mph.
Monday
Sunny, with a high near 89. Southwest wind 5 to 9 mph.
Monday Night
Mostly clear, with a low around 67. Southwest wind 5 to 7 mph.
Tuesday
Sunny and hot, with a high near 96. Heat index values as high as 99. West wind 6 to 13 mph, with gusts as high as 26 mph.
Tuesday Night
Mostly clear, with a low around 76. West wind around 9 mph, with gusts as high as 21 mph.
Wednesday
Mostly sunny and hot, with a high near 95. Northwest wind 8 to 10 mph, with gusts as high as 22 mph.
Wednesday Night
Partly cloudy, with a low around 66. Northwest wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 89. Light west wind increasing to 5 to 9 mph in the morning. Winds could gust as high as 21 mph.
Thursday Night
Mostly clear, with a low around 64. West wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 86. Northwest wind 3 to 8 mph.
Friday Night
Partly cloudy, with a low around 61. Light northwest wind.
Saturday
Mostly sunny, with a high near 84. Calm wind becoming west around 6 mph in the afternoon.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 61. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 82. Light and variable wind becoming west 5 to 7 mph in the morning.
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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:
3:11 pm EDT Jul 12, 2026
Forecast Valid:
12am EDT Jul 13, 2026-6pm EDT Jul 19, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation