Swift Reservoir Weather Forecast

    • 42
    • 54

    Rain Showers

    • 38
    • 46

    Rain Showers

    • 34
    • 41

    Rain

    • 32
    • 41

    Rain/Snow

    • 32
    • 45

    Rain/Snow Likely

    • 34
    • 50

    Partly Sunny

Today 12 Apr South Washington Cascade Foothills

Mostly cloudy. A slight chance of Showers this Morning, then Showers likely this afternoon. Highs in the upper 50s. Northwest wind 5 to 10 Mph. Chance of rain 70 percent. Rainfall Amounts a tenth to a quarter of an inch.

Tonight 12 Apr South Washington Cascade Foothills

Mostly cloudy with a 50 percent chance of Showers. Lows in the mid 40s. West wind 5 to 10 Mph. Rainfall Amounts a tenth to a quarter of an inch.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Swift Reservoir Temperature Statistics

April Temperature

Southwest Washington Regional Airport (37.3 miles)

  • Lowest 9 April, 2026

    35.1 °F

  • Average April

    53.7 °F

  • Highest 5 April, 2026

    79 °F

Climate (2021–Present)

Southwest Washington Regional Airport (37.3 miles)

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  • Average Low 2021–2026

    45.2 °F

  • Average 2021–2026

    53.1 °F

  • Average High 2021–2026

    62.6 °F
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