Groton Weather Forecast

    • 43
    • 51

    Chance Rain Showers

    • 33
    • 64

    Mostly Cloudy

    • 39
    • 61

    Sunny

    • 39
    • 66

    Chance Rain

    • 31
    • 54

    Rain Likely

    • 21
    • 44

    Chance Rain

Today 7 Mar Northwest Middlesex County

Mostly cloudy. Areas of freezing drizzle in the morning. Patchy fog and freezing fog in the morning. Not as cool with Highs in the lower 50s. South Winds 5 to 10 Mph with Gusts up to 25 Mph.

Tonight 7 Mar Northwest Middlesex County

Mostly cloudy with a 50 percent chance of rain. Patchy fog. Not as cool with Lows in the lower 40s. Temperature rising into the lower 50s after midnight. Southwest Winds 5 to 10 Mph with Gusts up to 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Groton Temperature Statistics

March Temperature

Fitchburg, Fitchburg Municipal Airport (9.9 miles)

  • Lowest 3 March, 2026

    6.1 °F

  • Average March

    26.1 °F

  • Highest 4 March, 2026

    53.1 °F

Climate (2021–Present)

Fitchburg, Fitchburg Municipal Airport (9.9 miles)

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  • Average Low 2021–2026

    41.5 °F

  • Average 2021–2026

    51.6 °F

  • Average High 2021–2026

    61.5 °F
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