Rattlesnake Mountain Weather Forecast

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    Rain

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    Rain

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    Rain

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    Rain

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    Rain/Snow Likely

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    Rain Likely

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    Rain Likely

Today 7 Dec Foothills and Valleys of Central King County

Rain likely in the Morning, then rain in the late morning and early afternoon. A chance of rain late in the afternoon. Rainfall Amounts a half inch to one inch possible. Highs in the lower to mid 50s. Southeast wind to 10 Mph becoming south around 10 Mph in the afternoon. Gusts to 30 Mph.

Tonight 7 Dec Foothills and Valleys of Central King County

Rain at Times. Rainfall Amounts a tenth to a quarter of an inch possible. Lows in the mid to upper 40s. Southwest wind 10 to 15 Mph becoming south after midnight. Gusts to 25 Mph.

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Rattlesnake Mountain Temperature Statistics

December Temperature

Stampede Pass (24.2 miles)

  • Lowest 1 December, 2025

    23 °F

  • Average December

    31.7 °F

  • Highest 5 December, 2025

    42.1 °F

Climate (2020–Present)

Stampede Pass (24.2 miles)

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  • Average Low 2020–2025

    36.2 °F

  • Average 2020–2025

    41.5 °F

  • Average High 2020–2025

    48.2 °F
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