St. George Airport Weather Forecast

    • 21
    • 40

    Sunny

    • 31
    • 54

    Mostly Sunny

    • 41
    • 61

    Mostly Cloudy

    • 51
    • 69

    Chance Rain Showers

    • 34
    • 63

    Mostly Sunny

    • 43
    • 62

    Mostly Sunny

Today 15 Dec Dorchester

Sunny. Much cooler with Highs around 40. Wind chill Values as low as 10 above this morning. Northeast Winds 5 to 10 Mph.

Tonight 15 Dec Dorchester

Mostly clear. Lows in the lower 20s. Light and variable Winds.

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St. George Airport Temperature Statistics

December Temperature

Summerville Airport (16.2 miles)

  • Lowest 10 December, 2025

    26.6 °F

  • Average December

    46.9 °F

  • Highest 13 December, 2025

    69.8 °F

Climate (2020–Present)

Summerville Airport (16.2 miles)

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  • Average Low 2020–2025

    56.2 °F

  • Average 2020–2025

    65.7 °F

  • Average High 2020–2025

    76.7 °F
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