Keystone Peak Weather Forecast

    • 48
    • 70

    Decreasing Clouds

    • 49
    • 68

    Sunny

    • 56
    • 73

    Mostly Sunny

    • 54
    • 74

    Partly Sunny

    • 55
    • 74

    Mostly Sunny

    • 52
    • 74

    Mostly Sunny

Today 16 Apr Upper Santa Cruz River and Altar Valleys including Nogales

Mostly cloudy late in the morning then becoming partly cloudy. Highs 76 to 82.

Tonight 16 Apr Upper Santa Cruz River and Altar Valleys including Nogales

Mostly clear. Lows 43 to 49.

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Keystone Peak Temperature Statistics

April Temperature

Tucson Ryan Field Airport (18 miles)

  • Lowest 3 April, 2026

    51.8 °F

  • Average April

    78 °F

  • Highest 9 April, 2026

    93.2 °F

Climate (2021–Present)

Tucson Ryan Field Airport (18 miles)

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  • Average Low 2021–2026

    56.7 °F

  • Average 2021–2026

    73.9 °F

  • Average High 2021–2026

    84.3 °F
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