Granite Lake Weather Forecast

    • 43
    • 64

    Mostly Cloudy

    • 46
    • 72

    Sunny

    • 47
    • 77

    Mostly Sunny

    • 47
    • 76

    Mostly Sunny

    • 48
    • 78

    Mostly Sunny

    • 49
    • 80

    Mostly Sunny

Today 15 Sep Spokane Area

Patchy fog in the morning. Cloudy. Highs in the lower to mid 60s. Light wind.

Tonight 15 Sep Spokane Area

Mostly cloudy in the evening then clearing. Lows in the 40s. North wind 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Granite Lake Temperature Statistics

September Temperature

Fairchild Air Force Base (4.3 miles)

  • Lowest 5 September, 2026

    43.7 °F

  • Average September

    59.3 °F

  • Highest 1 September, 2026

    81 °F

Climate (2021–2026)

Fairchild Air Force Base (4.3 miles)

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  • Average Low 2021–2026

    39.6 °F

  • Average 2021–2026

    49.2 °F

  • Average High 2021–2026

    58.6 °F
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