River Lake Weather Forecast

    • 39
    • 67

    Mostly Cloudy

    • 38
    • 58

    Mostly Cloudy

    • 39
    • 61

    Partly Sunny

    • 40
    • 63

    Partly Sunny

    • 40
    • 66

    Partly Sunny

    • 40
    • 68

    Partly Sunny

Today 20 Sep Crawford

Partly sunny. Highs in the upper 60s. Northeast Winds 5 to 10 Mph. Gusts up to 20 Mph in the afternoon.

Tonight 20 Sep Crawford

Partly cloudy early then becoming mostly cloudy. Lows around 40. Northeast Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

River Lake Temperature Statistics

September Temperature

Grayling, Grayling Army Airfield (10.6 miles)

  • Lowest 14 September, 2026

    36.1 °F

  • Average September

    63.4 °F

  • Highest 1 September, 2026

    89.6 °F

Climate (2021–2026)

Grayling, Grayling Army Airfield (10.6 miles)

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  • Average Low 2021–2026

    34.6 °F

  • Average 2021–2026

    45.6 °F

  • Average High 2021–2026

    55 °F
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