Keystone Weather Forecast

    • 32
    • 48

    Decreasing Clouds

    • 31
    • 54

    Becoming Sunny

    • 40
    • 66

    Mostly Sunny

    • 58
    • 71

    Partly Sunny

    • 51
    • 81

    Sunny

    • 46
    • 73

    Sunny

    • 54
    • 75

    Partly Sunny

Today 29 Dec Brazos

Partly sunny and much cooler. Near steady temperature in the mid 40s. North Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 29 Dec Brazos

Mostly cloudy in the Evening, then becoming partly cloudy. Cold with Lows in the lower 30s. North Winds 10 to 15 Mph with Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Keystone Temperature Statistics

December Temperature

Bryan Coulter Field (3.7 miles)

  • Lowest 15 December, 2025

    28.6 °F

  • Average December

    58.2 °F

  • Highest 26 December, 2025

    82.4 °F

Climate (2020–Present)

Bryan Coulter Field (3.7 miles)

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  • Average Low 2020–2025

    59.6 °F

  • Average 2020–2025

    69.3 °F

  • Average High 2020–2025

    80 °F
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