Thornton Weather Forecast

    • 49
    • 81

    Becoming Sunny

    • 50
    • 83

    Mostly Sunny

    • 52
    • 85

    Mostly Sunny

    • 54
    • 89

    Mostly Sunny

    • 50
    • 85

    Mostly Cloudy

    • 46
    • 70

    Slight Chance Rain Showers

Today 21 Jun Washington Palouse

Sunny. Highs in the upper 70s to upper 80s. West wind 5 to 10 Mph.

Tonight 21 Jun Washington Palouse

Mostly clear. Lows in the upper 40s to lower 50s. Northwest wind 5 to 10 Mph in the Evening, becoming light and variable.

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  • Temperature Real-Time

Thornton Temperature Statistics

June Temperature

Pullman / Moscow Regional Airport (28.6 miles)

  • Lowest 5 June, 2026

    38.6 °F

  • Average June

    58.4 °F

  • Highest 16 June, 2026

    84.7 °F

Climate (2021–2026)

Pullman / Moscow Regional Airport (28.6 miles)

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  • Average Low 2021–2026

    39.5 °F

  • Average 2021–2026

    49.6 °F

  • Average High 2021–2026

    59.7 °F
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