Expansion Bay Weather Forecast

    • 35
    • 49

    Increasing Clouds

    • 38
    • 48

    Chance Rain Showers

    • 43
    • 52

    Rain Showers Likely

    • 39
    • 55

    Rain Showers Likely

    • 36
    • 56

    Chance Rain Showers

    • 32
    • 52

    Slight Chance Rain Showers

Today 13 Oct Mercer

Mostly sunny. Highs in the upper 40s. Northwest Winds around 10 Mph with Gusts up to 20 Mph, becoming north in the afternoon.

Tonight 13 Oct Mercer

Increasing Clouds. Lows in the lower 30s. East Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Expansion Bay Temperature Statistics

October Temperature

Garrison (15.5 miles)

  • Lowest 7 October, 2025

    28 °F

  • Average October

    55.9 °F

  • Highest 3 October, 2025

    86 °F

Climate (2020–Present)

Garrison (15.5 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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