Raymond J. Callahan State Park Weather Forecast

    • 46
    • 74

    Mostly Sunny

    • 52
    • 76

    Partly Sunny

    • 56
    • 77

    Partly Sunny

    • 56
    • 77

    Partly Sunny

    • 59
    • 79

    Mostly Sunny

    • 64
    • 83

    Partly Sunny

Today 18 Aug Central Middlesex County

Mostly sunny. Much cooler with Highs in the mid 70s. Northeast Winds 5 to 10 Mph with Gusts up to 25 Mph.

Tonight 18 Aug Central Middlesex County

Mostly clear. Cooler with Lows in the upper 40s. Southeast Winds 5 to 10 Mph, becoming north after midnight.

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Raymond J. Callahan State Park Temperature Statistics

August Temperature

Laurence G Hanscom Field Airport (13 miles)

  • Lowest 2 August, 2025

    47.6 °F

  • Average August

    71.6 °F

  • Highest 11 August, 2025

    93.7 °F

Climate (2020–Present)

Laurence G Hanscom Field Airport (13 miles)

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  • Average Low 2020–2025

    41.7 °F

  • Average 2020–2025

    52 °F

  • Average High 2020–2025

    62 °F
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