Postel Lake Weather Forecast

    • 33
    • 41

    Rain/Snow

    • 35
    • 43

    Rain/Snow

    • 39
    • 58

    Partly Sunny

    • 40
    • 59

    Slight Chance Rain Showers

    • 43
    • 60

    Chance Rain Showers

    • 43
    • 59

    Chance Rain Showers

Today 20 May McLean

Patchy fog in the morning. Showers. Highs in the lower 40s. Northeast Winds 5 to 10 Mph.

Tonight 20 May McLean

Snow Showers. Rain Showers. Lows in the mid 30s. Northeast Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Postel Lake Temperature Statistics

May Temperature

Garrison (35.4 miles)

  • Lowest 1 May, 2025

    33.7 °F

  • Average May

    57.5 °F

  • Highest 11 May, 2025

    97.6 °F

Climate (2020–Present)

Garrison (35.4 miles)

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  • Average Low 2020–2025

    31.3 °F

  • Average 2020–2025

    42.7 °F

  • Average High 2020–2025

    54.2 °F
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