St George Weather Forecast

    • 76
    • 100

    Hot

    • 74
    • 98

    Hot

    • 72
    • 96

    Mostly Sunny

    • 71
    • 95

    Mostly Sunny

    • 70
    • 96

    Mostly Sunny

    • 71
    • 97

    Hot

Today 12 Sep Lower Washington County

Partly cloudy in the morning then becoming sunny. Highs in the upper 90s.

Tonight 12 Sep Lower Washington County

Mostly clear. Lows in the mid 70s.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

St George Temperature Statistics

September Temperature

St George Municipal Airport (5 miles)

  • Lowest 7 September, 2026

    62.1 °F

  • Average September

    81.3 °F

  • Highest 10 September, 2026

    102.9 °F

Climate (2021–2026)

St George Municipal Airport (5 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    53 °F

  • Average 2021–2026

    64.8 °F

  • Average High 2021–2026

    76.8 °F
Get WillyWeather+ to remove ads