South Twin Mountain Weather Forecast

    • 10
    • 15

    Chance Snow

    • 4
    • 23

    Chance Snow

    • -15
    • 9

    Chance Snow Showers

    • -17
    • -11

    Windy

    • -9
    • -1

    Blustery

    • -5
    • 5

    Slight Chance Snow

Today 21 Jan Northern Grafton

Partly sunny in the Morning, then mostly cloudy with a chance of snow in the afternoon. Highs in the lower 20s. Southwest Winds around 10 Mph with Gusts up to 25 Mph. Chance of snow 50 percent. Wind chill Values as low as 17 below in the morning.

Tonight 21 Jan Northern Grafton

Mostly clear. Lows around zero. Southwest Winds around 10 Mph with Gusts up to 20 Mph. Wind chill Values as low as 16 below.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Twin Mountain Temperature Statistics

January Temperature

Whitefield - Mount Washington Regional Airport (11.8 miles)

  • Lowest 2 January, 2026

    -17 °F

  • Average January

    21.5 °F

  • Highest 9 January, 2026

    46.9 °F

Climate (2021–Present)

Whitefield - Mount Washington Regional Airport (11.8 miles)

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  • Average Low 2021–2026

    32.5 °F

  • Average 2021–2026

    44.1 °F

  • Average High 2021–2026

    55.4 °F
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