St George Weather Forecast

    • 64
    • 92

    Mostly Sunny

    • 68
    • 92

    Partly Sunny

    • 67
    • 92

    Chance Rain Showers

    • 65
    • 89

    Slight Chance Thunderstorms

    • 69
    • 93

    Mostly Sunny

    • 70
    • 95

    Partly Sunny

Today 19 Sep Lower Washington County

Sunny. Highs around 90.

Tonight 19 Sep Lower Washington County

Mostly clear. Lows in the lower 60s.

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

    83.7 °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