Bear Brook State Park Weather Forecast

    • 56
    • 78

    Thunderstorms

    • 51
    • 75

    Mostly Sunny

    • 51
    • 73

    Mostly Sunny

    • 53
    • 77

    Partly Sunny

    • 50
    • 74

    Slight Chance Rain Showers

    • 51
    • 74

    Mostly Sunny

Today 25 Aug Merrimack

Partly sunny with scattered Showers and Thunderstorms. Highs in the upper 70s. Light and variable Winds. Chance of rain 50 percent.

Tonight 25 Aug Merrimack

Mostly clear. Isolated Showers this evening. Lows in the mid 50s. Light and variable Winds. Chance of rain 20 percent.

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Bear Brook State Park Temperature Statistics

August Temperature

Concord Municipal Airport (8.7 miles)

  • Lowest 22 August, 2025

    44.7 °F

  • Average August

    71.1 °F

  • Highest 11 August, 2025

    97.6 °F

Climate (2020–Present)

Concord Municipal Airport (8.7 miles)

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  • Average Low 2020–2025

    38.6 °F

  • Average 2020–2025

    49.3 °F

  • Average High 2020–2025

    60.1 °F
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