Weiser Weather Forecast

    • 61
    • 88

    Becoming Sunny

    • 63
    • 93

    Sunny

    • 65
    • 97

    Hot

    • 67
    • 97

    Hot

    • 64
    • 96

    Mostly Sunny

    • 66
    • 95

    Mostly Sunny

Today 22 Jul Lower Treasure Valley

Partly cloudy. A slight chance of Showers in the afternoon. Chance of rain 20 percent. Highs 83 to 88. Northwest Winds up to 10 Mph.

Tonight 22 Jul Lower Treasure Valley

Decreasing Clouds. Lows 58 to 63. Northwest Winds up to 10 Mph.

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Weiser Temperature Statistics

July Temperature

Ontario Municipal Airport (16.2 miles)

  • Lowest 5 July, 2025

    50.6 °F

  • Average July

    80 °F

  • Highest 1 July, 2025

    104.6 °F

Climate (2020–Present)

Ontario Municipal Airport (16.2 miles)

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  • Average Low 2020–2025

    42.5 °F

  • Average 2020–2025

    54.6 °F

  • Average High 2020–2025

    67.1 °F
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