Swift Reservoir Weather Forecast

    • 39
    • 47

    Chance Rain

    • 39
    • 47

    Rain Likely

    • 42
    • 48

    Chance Rain

    • 39
    • 57

    Partly Sunny

    • 37
    • 54

    Mostly Sunny

    • 37
    • 53

    Mostly Sunny

Today 10 Jan South Washington Cascade Foothills

Mostly cloudy. A slight chance of rain this afternoon. Highs in the lower 50s. Southeast wind 5 to 10 Mph. Chance of rain 20 percent.

Tonight 10 Jan South Washington Cascade Foothills

Mostly cloudy with a 50 percent chance of rain. Lows in the lower 40s. Southeast wind 5 to 10 Mph. Rainfall Amounts around a tenth of an inch.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Swift Reservoir Temperature Statistics

January Temperature

Southwest Washington Regional Airport (37.3 miles)

  • Lowest 1 January, 2026

    30 °F

  • Average January

    43.1 °F

  • Highest 3 January, 2026

    53.1 °F

Climate (2021–Present)

Southwest Washington Regional Airport (37.3 miles)

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  • Average Low 2021–2026

    45.1 °F

  • Average 2021–2026

    52.9 °F

  • Average High 2021–2026

    62.4 °F
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