Costilla Weather Forecast

    • 56
    • 84

    Mostly Cloudy

    • 56
    • 84

    Chance Thunderstorms

    • 54
    • 83

    Chance Thunderstorms

    • 50
    • 82

    Chance Thunderstorms

    • 50
    • 82

    Slight Chance Thunderstorms

    • 52
    • 84

    Mostly Sunny

    • 52
    • 83

    Partly Sunny

Today 28 Aug Upper Rio Grande Valley

Partly cloudy with a slight chance of Showers and Thunderstorms. Highs in the mid 80s. West Winds around 15 Mph. Chance of rain 20 percent.

Tonight 28 Aug Upper Rio Grande Valley

Partly cloudy. Lows in the lower 50s. North Winds around 15 Mph, becoming south after midnight.

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Costilla Temperature Statistics

August Temperature

San Luis Valley Regional Airport (36.7 miles)

  • Lowest 24 August, 2026

    40.6 °F

  • Average August

    68.6 °F

  • Highest 4 August, 2026

    93.7 °F

Climate (2021–2026)

San Luis Valley Regional Airport (36.7 miles)

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  • Average Low 2021–2026

    26.7 °F

  • Average 2021–2026

    45.2 °F

  • Average High 2021–2026

    63.5 °F
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