Alton Weather Forecast

    • 60
    • 81

    Rain Showers

    • 56
    • 70

    Rain Showers Likely

    • 59
    • 77

    Mostly Sunny

    • 62
    • 79

    Mostly Sunny

    • 62
    • 81

    Partly Sunny

    • 61
    • 80

    Mostly Cloudy

    • 63
    • 79

    Mostly Cloudy

Today 31 Jul Washington

Mostly cloudy with a chance of Showers with isolated Thunderstorms. Not as warm with Highs in the lower 80s. Northeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 50 percent.

Tonight 31 Jul Washington

Showers with a slight chance of Thunderstorms. Patchy fog. Some Thunderstorms may produce heavy rainfall. Cooler with Lows around 60. Northeast Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 80 percent.

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Alton Temperature Statistics

July Temperature

Westerly, Westerly State Airport (6.8 miles)

  • Lowest 22 July, 2025

    55.7 °F

  • Average July

    73.9 °F

  • Highest 29 July, 2025

    90 °F

Climate (2020–Present)

Westerly, Westerly State Airport (6.8 miles)

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  • Average Low 2020–2025

    44.5 °F

  • Average 2020–2025

    52.6 °F

  • Average High 2020–2025

    60.4 °F
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