San Tan Valley Weather Forecast

    • 83
    • 105

    Hot

    • 81
    • 103

    Slight Chance Thunderstorms

    • 80
    • 101

    Hot

    • 81
    • 102

    Slight Chance Thunderstorms

    • 78
    • 102

    Chance Rain Showers

    • 78
    • 98

    Chance Rain Showers

    • 77
    • 98

    Slight Chance Thunderstorms

Today 10 Sep Northwest Pinal County

Sunny and hot. Highs 103 to 108. Southwest wind 5 to 10 Mph in the morning becoming west in the afternoon.

Tonight 10 Sep Northwest Pinal County

Mostly clear. Lows 75 to 85. West wind 10 to 15 Mph in the evening becoming south after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Tan Valley Temperature Statistics

September Temperature

Phoenix-Mesa Gateway Airport (10.6 miles)

  • Lowest 1 September, 2026

    73.4 °F

  • Average September

    89.4 °F

  • Highest 8 September, 2026

    104 °F

Climate (2021–2026)

Phoenix-Mesa Gateway Airport (10.6 miles)

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  • Average Low 2021–2026

    60.9 °F

  • Average 2021–2026

    71 °F

  • Average High 2021–2026

    86.1 °F
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