Lystair Lake Weather Forecast

    • 43
    • 70

    Mostly Cloudy

    • 45
    • 68

    Mostly Cloudy

    • 45
    • 74

    Partly Sunny

    • 48
    • 81

    Partly Sunny

    • 47
    • 77

    Partly Sunny

    • 44
    • 74

    Partly Sunny

    • 44
    • 67

    Chance Rain

Today 18 May Middle Chehalis River Valley

Mostly cloudy in the morning then becoming sunny. Patchy fog in the morning. Highs in the mid 60s to lower 70s. West wind to 10 Mph increasing to 10 to 15 Mph with Gusts to 25 Mph in the afternoon.

Tonight 18 May Middle Chehalis River Valley

Partly cloudy in the evening then becoming mostly cloudy. Patchy fog late in the night. Lows in the 40s. West wind 10 to 15 Mph decreasing to 10 Mph or less after midnight. Gusts to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lystair Lake Temperature Statistics

May Temperature

Shelton, Shelton Sanderson Field (10.6 miles)

  • Lowest 9 May, 2026

    39.9 °F

  • Average May

    56.3 °F

  • Highest 3 May, 2026

    84 °F

Climate (2021–Present)

Shelton, Shelton Sanderson Field (10.6 miles)

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  • Average Low 2021–2026

    41.8 °F

  • Average 2021–2026

    51.3 °F

  • Average High 2021–2026

    61.3 °F
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