Contoocook Weather Forecast

    • 59
    • 76

    Rain Showers

    • 43
    • 71

    Mostly Sunny

    • 45
    • 65

    Partly Sunny

    • 45
    • 58

    Rain Showers Likely

    • 43
    • 64

    Slight Chance Rain Showers

    • 42
    • 62

    Slight Chance Rain Showers

Today 17 Sep Merrimack

Mostly cloudy. A chance of Sprinkles this Morning, then Showers likely with a slight chance of Thunderstorms this afternoon. Highs in the mid 70s. Light and variable Winds. Chance of rain 70 percent.

Tonight 17 Sep Merrimack

Mostly cloudy. Showers with a slight chance of Thunderstorms in the Evening, then a chance of Showers after midnight. Patchy fog. Lows in the upper 50s. Light and variable Winds. Chance of rain 90 percent.

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Contoocook Temperature Statistics

September Temperature

Concord Municipal Airport (10.6 miles)

  • Lowest 15 September, 2026

    41 °F

  • Average September

    65.1 °F

  • Highest 10 September, 2026

    86.6 °F

Climate (2021–2026)

Concord Municipal Airport (10.6 miles)

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  • Average Low 2021–2026

    38.1 °F

  • Average 2021–2026

    49.2 °F

  • Average High 2021–2026

    60.2 °F
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