Joliet Weather Forecast

    • 66
    • 83

    Increasing Clouds

    • 65
    • 82

    Gradual Clearing

    • 43
    • 82

    Chance Rain Showers

    • 34
    • 50

    Breezy

    • 34
    • 55

    Partly Sunny

    • 39
    • 62

    Partly Sunny

    • 49
    • 68

    Mostly Cloudy

Today 26 Dec Caldwell

Cloudy this Morning, then becoming partly cloudy. Patchy fog this morning. Highs in the mid 80s. Southwest Winds 5 to 10 Mph.

Tonight 26 Dec Caldwell

Partly cloudy this Evening, then becoming cloudy. Lows in the mid 60s. South Winds 5 to 10 Mph.

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Joliet Temperature Statistics

December Temperature

San Marcos, San Marcos Municipal Airport (13.7 miles)

  • Lowest 9 December, 2025

    28 °F

  • Average December

    55.8 °F

  • Highest 24 December, 2025

    81 °F

Climate (2020–Present)

San Marcos, San Marcos Municipal Airport (13.7 miles)

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  • Average Low 2020–2025

    59.5 °F

  • Average 2020–2025

    70.2 °F

  • Average High 2020–2025

    81.9 °F
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