Costilla Weather Forecast

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    • 86

    Thunderstorms

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    • 82

    Thunderstorms

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    • 81

    Thunderstorms

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    • 81

    Thunderstorms Likely

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    Chance Thunderstorms

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    Chance Thunderstorms

Today 14 Jul Upper Rio Grande Valley

Mostly sunny in the Morning, then partly cloudy with a chance of Showers and Thunderstorms in the afternoon. Highs in the mid 80s. South Winds around 15 Mph. Chance of rain 50 percent.

Tonight 14 Jul Upper Rio Grande Valley

Mostly clear. Lows in the lower 50s. Southeast Winds 15 to 20 Mph.

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Costilla Temperature Statistics

July Temperature

San Luis Valley Regional Airport (36.7 miles)

  • Lowest 3 July, 2026

    34.6 °F

  • Average July

    65.5 °F

  • Highest 9 July, 2026

    90.6 °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

    45.1 °F

  • Average High 2021–2026

    63.3 °F
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