Glacial Heritage Preserve Weather Forecast

    • 45
    • 65

    Chance Rain

    • 49
    • 77

    Partly Sunny

    • 49
    • 78

    Partly Sunny

    • 42
    • 63

    Partly Sunny

    • 40
    • 64

    Partly Sunny

    • 42
    • 66

    Mostly Sunny

Today 26 May Lowlands of Lewis and Southern Thurston Counties

Partly sunny. Areas of fog in the morning. A slight chance of Showers late in the afternoon. Highs in the 60s. Light wind.

Tonight 26 May Lowlands of Lewis and Southern Thurston Counties

Partly cloudy. Lows in the lower to mid 40s. Light wind.

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Glacial Heritage Preserve Temperature Statistics

May Temperature

Olympia, Olympia Airport (9.9 miles)

  • Lowest 17 May, 2026

    32.6 °F

  • Average May

    56.9 °F

  • Highest 3 May, 2026

    85.6 °F

Climate (2021–Present)

Olympia, Olympia Airport (9.9 miles)

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  • Average Low 2021–2026

    41.8 °F

  • Average 2021–2026

    51.9 °F

  • Average High 2021–2026

    62.3 °F
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