Expansion Bay Weather Forecast

    • 38
    • 61

    Increasing Clouds

    • 43
    • 56

    Chance Rain Showers

    • 42
    • 72

    Rain Showers

    • 27
    • 53

    Rain Showers Likely

    • 40
    • 58

    Chance Rain Showers

    • 37
    • 62

    Chance Rain Showers

Today 25 Apr Mercer

Sunny. Highs in the lower 60s. East Winds around 5 Mph, increasing to around 10 Mph with Gusts up to 20 Mph in the afternoon.

Tonight 25 Apr Mercer

Increasing Clouds. Lows in the upper 30s. Southeast Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Expansion Bay Temperature Statistics

April Temperature

Garrison (15.5 miles)

  • Lowest 19 April, 2025

    13.7 °F

  • Average April

    41.4 °F

  • Highest 11 April, 2025

    75.7 °F

Climate (2020–Present)

Garrison (15.5 miles)

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  • Average Low 2020–2025

    31.2 °F

  • Average 2020–2025

    42.6 °F

  • Average High 2020–2025

    54.1 °F
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