Thornton Weather Forecast

    • 19
    • 33

    Snow

    • -2
    • 24

    Mostly Sunny

    • 16
    • 25

    Snow

    • 20
    • 43

    Chance Rain Showers

    • 8
    • 29

    Partly Sunny

    • 17
    • 29

    Rain/Snow Likely

Today 31 Jan Northern Grafton

Cloudy. Isolated snow Showers. Highs in the lower 30s. Light and variable Winds. Chance of snow 20 percent.

Tonight 31 Jan Northern Grafton

Snow. Snow accumulation of 2 to 4 Inches. Lows around 13. Light and variable Winds, becoming northwest around 10 Mph after midnight. Chance of snow 80 percent.

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Thornton Temperature Statistics

January Temperature

Plymouth Municipal Airport (8.7 miles)

  • Lowest 22 January, 2025

    -18.8 °F

  • Average January

    19.7 °F

  • Highest 1 January, 2025

    39.6 °F

Climate (2020–Present)

Plymouth Municipal Airport (8.7 miles)

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  • Average Low 2020–2025

    36.7 °F

  • Average 2020–2025

    46.8 °F

  • Average High 2020–2025

    57.2 °F
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