Roy Lake Weather Forecast

    • 50
    • 68

    Rain Showers Likely

    • 48
    • 69

    Slight Chance Rain Showers

    • 51
    • 63

    Chance Rain Showers

    • 49
    • 68

    Mostly Cloudy

    • 47
    • 68

    Mostly Cloudy

    • 48
    • 66

    Mostly Cloudy

    • 50
    • 68

    Mostly Cloudy

Today 16 Sep Mahnomen

Partly sunny. A slight chance of Showers. Highs 70 to 75.

Tonight 16 Sep Mahnomen

Mostly cloudy. Scattered Showers this evening. Lows 45 to 50. Southeast Winds up to 10 Mph. Chance of rain 50 percent.

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Roy Lake Temperature Statistics

September Temperature

Mahnomen County Airport (18 miles)

  • Lowest 13 September, 2026

    37 °F

  • Average September

    64.7 °F

  • Highest 3 September, 2026

    85.5 °F

Climate (2021–2026)

Mahnomen County Airport (18 miles)

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  • Average Low 2021–2026

    32.2 °F

  • Average 2021–2026

    41.8 °F

  • Average High 2021–2026

    51.1 °F
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