Issaquah 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 Likely

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    Rain

Today 21 Feb Eastside

Rain and snow likely in the Morning, then rain at Times in the afternoon. No snow accumulation. Highs in the upper 40s. Southeast wind to 10 Mph with Gusts to 25 Mph.

Tonight 21 Feb Eastside

Rain at Times in the Evening, then a slight chance of rain late in the evening. Rain likely after midnight. Rainfall Amounts less than a tenth of an inch likely. Lows in the lower to mid 40s. East wind around 10 Mph becoming southeast after midnight. Gusts to 30 Mph.

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Issaquah Temperature Statistics

February Temperature

Renton Municipal Airport (8.7 miles)

  • Lowest 16 February, 2026

    32 °F

  • Average February

    44.7 °F

  • Highest 4 February, 2026

    60.1 °F

Climate (2021–Present)

Renton Municipal Airport (8.7 miles)

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  • Average Low 2021–2026

    47.4 °F

  • Average 2021–2026

    54.7 °F

  • Average High 2021–2026

    62.3 °F
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