Expansion Bay Weather Forecast

    • 66
    • 88

    Partly Sunny

    • 64
    • 94

    Slight Chance Thunderstorms

    • 58
    • 84

    Breezy

    • 56
    • 79

    Partly Sunny

    • 59
    • 83

    Mostly Sunny

    • 61
    • 85

    Partly Sunny

Today 18 Jul Mercer

Patchy fog early in the morning. Partly cloudy. Highs in the lower 90s. Light and variable Winds, becoming south up to 10 Mph with Gusts up to 20 Mph.

Tonight 18 Jul Mercer

Partly cloudy. A chance of Showers and a slight chance of Thunderstorms after midnight. Lows in the mid 60s. Southeast Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Expansion Bay Temperature Statistics

July Temperature

Garrison (15.5 miles)

  • Lowest 8 July, 2026

    54.6 °F

  • Average July

    72.7 °F

  • Highest 12 July, 2026

    98.7 °F

Climate (2021–2026)

Garrison (15.5 miles)

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  • Average Low 2021–2026

    31.3 °F

  • Average 2021–2026

    42.6 °F

  • Average High 2021–2026

    54 °F
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