Keystone Peak Weather Forecast

    • 47
    • 57

    Mostly Cloudy

    • 53
    • 61

    Partly Sunny

    • 53
    • 62

    Rain Showers Likely

    • 50
    • 57

    Rain Showers

    • 48
    • 56

    Slight Chance Rain Showers

    • 48
    • 59

    Partly Sunny

    • 47
    • 58

    Mostly Cloudy

Today 29 Dec Upper Santa Cruz River and Altar Valleys including Nogales

Mostly cloudy. Highs 65 to 71.

Tonight 29 Dec Upper Santa Cruz River and Altar Valleys including Nogales

Mostly cloudy in the evening then becoming partly cloudy. Lows 40 to 46.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Keystone Peak Temperature Statistics

December Temperature

Tucson Ryan Field Airport (18 miles)

  • Lowest 5 December, 2025

    35.6 °F

  • Average December

    62.1 °F

  • Highest 22 December, 2025

    86 °F

Climate (2020–Present)

Tucson Ryan Field Airport (18 miles)

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  • Average Low 2020–2025

    56.4 °F

  • Average 2020–2025

    73.6 °F

  • Average High 2020–2025

    84.1 °F
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