Fountain Hills Weather Forecast

    • 78
    • 98

    Chance Thunderstorms

    • 78
    • 96

    Rain Showers Likely

    • 76
    • 95

    Chance Thunderstorms

    • 77
    • 97

    Slight Chance Thunderstorms

    • 77
    • 100

    Hot

    • 77
    • 101

    Hot

Today 14 Sep Fountain Hills/East Mesa

Partly cloudy in the morning then becoming mostly sunny. A slight chance of Showers and Thunderstorms. Highs 95 to 100. Southeast wind 5 to 10 Mph in the morning becoming south in the afternoon. Chance of rain 20 percent.

Tonight 14 Sep Fountain Hills/East Mesa

Partly cloudy in the evening then considerable cloudiness. A chance of Showers and Thunderstorms. Lows 71 to 81. East wind 5 to 10 Mph. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fountain Hills Temperature Statistics

September Temperature

Mesa / Falcon Field (9.3 miles)

  • Lowest 1 September, 2026

    75.9 °F

  • Average September

    92.8 °F

  • Highest 10 September, 2026

    105.1 °F

Climate (2021–2026)

Mesa / Falcon Field (9.3 miles)

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  • Average Low 2021–2026

    66 °F

  • Average 2021–2026

    76.5 °F

  • Average High 2021–2026

    86.9 °F
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