Costilla Weather Forecast

    • 25
    • 57

    Becoming Sunny

    • 31
    • 57

    Mostly Sunny

    • 32
    • 67

    Mostly Sunny

    • 34
    • 68

    Partly Sunny

    • 30
    • 64

    Mostly Sunny

    • 32
    • 64

    Mostly Sunny

    • 26
    • 61

    Breezy

Today 31 Oct Upper Rio Grande Valley

Partly cloudy late this Morning, then becoming mostly cloudy. Highs around 60. Southwest Winds around 15 Mph this afternoon.

Tonight 31 Oct Upper Rio Grande Valley

Cold. Mostly clear. Lows in the lower 20s.

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Costilla Temperature Statistics

October Temperature

San Luis Valley Regional Airport (36.7 miles)

  • Lowest 29 October, 2025

    10 °F

  • Average October

    48.3 °F

  • Highest 3 October, 2025

    77 °F

Climate (2020–Present)

San Luis Valley Regional Airport (36.7 miles)

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  • Average Low 2020–2025

    26.5 °F

  • Average 2020–2025

    44.5 °F

  • Average High 2020–2025

    62.3 °F
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