St Elmo Weather Forecast

    • 43
    • 50

    Mostly Cloudy

    • 44
    • 61

    Partly Sunny

    • 57
    • 65

    Mostly Cloudy

    • 54
    • 70

    Mostly Cloudy

    • 44
    • 63

    Partly Sunny

    • 29
    • 57

    Mostly Cloudy

Today 22 Dec Fayette

Mostly sunny in the Morning, then becoming mostly cloudy. Highs around 50. South Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 22 Dec Fayette

Mostly cloudy and not as cool. Near steady temperature in the mid 40s. Southwest Winds 5 to 10 Mph.

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St Elmo Temperature Statistics

December Temperature

Effingham, Effingham County Memorial Airport (17.4 miles)

  • Lowest 14 December, 2025

    0.9 °F

  • Average December

    28.6 °F

  • Highest 18 December, 2025

    54.3 °F

Climate (2020–Present)

Effingham, Effingham County Memorial Airport (17.4 miles)

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  • Average Low 2020–2025

    45.8 °F

  • Average 2020–2025

    55.6 °F

  • Average High 2020–2025

    65.7 °F
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