Costilla Weather Forecast

    • 40
    • 72

    Becoming Sunny

    • 43
    • 76

    Partly Sunny

    • 43
    • 75

    Chance Rain Showers

    • 41
    • 66

    Rain Showers Likely

    • 41
    • 71

    Mostly Sunny

    • 44
    • 76

    Mostly Sunny

    • 42
    • 75

    Mostly Sunny

Today 23 May Upper Rio Grande Valley

Partly cloudy. Highs in the mid 70s. West Winds around 15 Mph.

Tonight 23 May Upper Rio Grande Valley

Mostly clear. Lows around 40. Northwest Winds around 15 Mph in the evening.

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Costilla Temperature Statistics

May Temperature

San Luis Valley Regional Airport (36.7 miles)

  • Lowest 7 May, 2026

    13.6 °F

  • Average May

    51.6 °F

  • Highest 13 May, 2026

    83.6 °F

Climate (2021–Present)

San Luis Valley Regional Airport (36.7 miles)

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  • Average Low 2021–2026

    26.8 °F

  • Average 2021–2026

    45.1 °F

  • Average High 2021–2026

    63.2 °F
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