Alton Weather Forecast

    • 42
    • 62

    Decreasing Clouds

    • 46
    • 63

    Partly Sunny

    • 50
    • 60

    Rain Showers

    • 47
    • 62

    Rain Showers Likely

    • 49
    • 64

    Chance Rain Showers

    • 53
    • 71

    Partly Sunny

    • 54
    • 77

    Partly Sunny

Today 11 May Washington

Partly sunny with a 20 percent chance of Showers. Near steady temperature in the lower 60s. West Winds around 5 Mph.

Tonight 11 May Washington

Mostly cloudy. Lows in the lower 40s. Southwest Winds around 5 Mph, becoming northwest after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Alton Temperature Statistics

May Temperature

Westerly, Westerly State Airport (6.8 miles)

  • Lowest 4 May, 2026

    36 °F

  • Average May

    52.1 °F

  • Highest 7 May, 2026

    64 °F

Climate (2021–Present)

Westerly, Westerly State Airport (6.8 miles)

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

  • Average Low 2021–2026

    44.2 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    60.3 °F
Get WillyWeather+ to remove ads