Thunder Mountain Weather Forecast

    • 76
    • 95

    Chance Rain Showers

    • 75
    • 90

    Slight Chance Thunderstorms

    • 76
    • 94

    Slight Chance Thunderstorms

    • 77
    • 99

    Hot

    • 77
    • 100

    Hot

Today 15 Sep Fountain Hills/East Mesa

Considerable cloudiness with a slight chance of Showers and Thunderstorms in the Morning, then partly sunny with a chance of Showers and a slight chance of Thunderstorms in the afternoon. Not as warm. Highs 93 to 98. East wind 5 to 10 Mph in the morning becoming south in the afternoon. Chance of rain 30 percent.

Tonight 15 Sep Fountain Hills/East Mesa

Partly cloudy with a chance of Showers and Thunderstorms in the Evening, then mostly cloudy with Showers likely and a chance of Thunderstorms after midnight. Lows 68 to 78. Southeast wind around 5 Mph. Chance of rain 70 percent. Rainfall up to three Quarters of an inch Possible, except locally higher in Thunderstorms.

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  • Temperature Forecast NOAA

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Thunder Mountain Temperature Statistics

September Temperature

Mesa / Falcon Field (5 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 (5 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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