Countryside Weather Forecast

    • 73
    • 100

    Hot

    • 78
    • 100

    Hot

    • 78
    • 98

    Hot

    • 77
    • 97

    Hot

    • 78
    • 98

    Hot

    • 79
    • 100

    Hot

    • 77
    • 99

    Hot

Today 21 Sep Northwest Valley

Partly sunny. A slight chance of Showers in the Morning, then a slight chance of afternoon Showers and Thunderstorms. Highs 93 to 99. Chance of rain 20 percent.

Tonight 21 Sep Northwest Valley

Clear. Lows 69 to 79. Southwest wind 5 to 10 Mph in the evening becoming light after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Countryside Temperature Statistics

September Temperature

Luke Air Force Base / Phoenix (5.6 miles)

  • Lowest 17 September, 2026

    74.7 °F

  • Average September

    93.4 °F

  • Highest 8 September, 2026

    108.1 °F

Climate (2021–2026)

Luke Air Force Base / Phoenix (5.6 miles)

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  • Average Low 2021–2026

    63.5 °F

  • Average 2021–2026

    75.4 °F

  • Average High 2021–2026

    87 °F
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