Washington Weather Forecast

    • 70
    • 97

    Hot

    • 74
    • 102

    Hot

    • 76
    • 103

    Hot

    • 75
    • 101

    Hot

    • 72
    • 99

    Hot

    • 69
    • 95

    Mostly Sunny

Today 8 Sep Lower Washington County

Sunny. Highs in the upper 90s.

Tonight 8 Sep Lower Washington County

Mostly clear. Lows around 70.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Washington Temperature Statistics

September Temperature

St George Municipal Airport (5.6 miles)

  • Lowest 1 September, 2026

    66.9 °F

  • Average September

    82 °F

  • Highest 5 September, 2026

    97 °F

Climate (2021–2026)

St George Municipal Airport (5.6 miles)

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  • Average Low 2021–2026

    53 °F

  • Average 2021–2026

    64.8 °F

  • Average High 2021–2026

    76.8 °F
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