McMahan Weather Forecast

    • 59
    • 70

    Rain Showers

    • 44
    • 72

    Rain Showers

    • 41
    • 71

    Mostly Sunny

    • 44
    • 73

    Sunny

    • 54
    • 76

    Mostly Sunny

    • 56
    • 79

    Partly Sunny

Today 29 Jan Caldwell

Areas of drizzle late this morning. Cloudy with a chance of Showers. Areas of dense fog late this morning. Patchy dense fog this afternoon. Not as cool with Highs around 70. Southeast Winds around 10 Mph. Chance of rain 40 percent.

Tonight 29 Jan Caldwell

A chance of Showers with a slight chance of Thunderstorms in the Evening, then Showers with a chance of Thunderstorms after midnight. Patchy fog. Not as cool. Near steady temperature in the upper 60s. Southeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 90 percent.

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McMahan Temperature Statistics

January Temperature

San Marcos, San Marcos Municipal Airport (20.5 miles)

  • Lowest 22 January, 2025

    19 °F

  • Average January

    45.1 °F

  • Highest 5 January, 2025

    75.9 °F

Climate (2020–Present)

San Marcos, San Marcos Municipal Airport (20.5 miles)

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  • Average Low 2020–2025

    59 °F

  • Average 2020–2025

    69.7 °F

  • Average High 2020–2025

    81.4 °F
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