Contoocook Weather Forecast

    • 36
    • 63

    Mostly Sunny

    • 43
    • 65

    Mostly Sunny

    • 48
    • 67

    Chance Rain

    • 48
    • 61

    Chance Rain Showers

    • 48
    • 61

    Chance Rain Showers

    • 48
    • 61

    Chance Rain Showers

Today 23 Sep Merrimack

Mostly sunny. Highs in the lower 60s. Northeast Winds around 10 Mph with Gusts up to 20 Mph.

Tonight 23 Sep Merrimack

Mostly clear. Chance of frost in Sheltered Locations after midnight. Lows in the upper 30s. Light and variable Winds.

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Contoocook Temperature Statistics

September Temperature

Concord Municipal Airport (10.6 miles)

  • Lowest 15 September, 2026

    39.7 °F

  • Average September

    63.9 °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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