McDonald Observatory Weather Forecast

    • 51
    • 81

    Mostly Sunny

    • 47
    • 82

    Breezy

    • 47
    • 72

    Mostly Sunny

    • 53
    • 81

    Partly Sunny

    • 54
    • 83

    Partly Sunny

    • 55
    • 85

    Partly Sunny

Today 9 May Davis Mountains

Sunny. Highs in the mid 80s. Southwest Winds around 5 Mph, becoming east this afternoon.

Tonight 9 May Davis Mountains

Clear. Lows in the mid 50s. South Winds 10 to 15 Mph.

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McDonald Observatory Temperature Statistics

May Temperature

Alpine, Alpine-Casparis Municipal Airport (28 miles)

  • Lowest 2 May, 2026

    44.1 °F

  • Average May

    65.9 °F

  • Highest 4 May, 2026

    86.7 °F

Climate (2021–Present)

Alpine, Alpine-Casparis Municipal Airport (28 miles)

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  • Average Low 2021–2026

    52 °F

  • Average 2021–2026

    65.1 °F

  • Average High 2021–2026

    78.2 °F
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