Knife River Weather Forecast

    • 45
    • 69

    Slight Chance Rain Showers

    • 46
    • 67

    Partly Sunny

    • 41
    • 73

    Partly Sunny

    • 50
    • 79

    Chance Rain Showers

    • 49
    • 78

    Chance Rain Showers

    • 47
    • 74

    Chance Rain Showers

Today 14 Sep Richland

Mostly sunny. A chance of Showers late this Morning, then a slight chance of Showers this afternoon. Very windy with Highs in the upper 60s. West wind 20 to 30 Mph, increasing to 30 to 35 Mph this afternoon. Gusts up to 50 Mph. Chance of rain 40 percent.

Tonight 14 Sep Richland

Mostly cloudy with a slight chance of Showers in the Evening, then partly cloudy after midnight. Very windy with Lows in the lower 40s. West wind 25 to 35 Mph with Gusts up to 50 Mph, decreasing to 15 to 20 Mph after midnight. Chance of rain 20 percent.

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Knife River Temperature Statistics

September Temperature

Sidney-Richland (18 miles)

  • Lowest 12 September, 2026

    43 °F

  • Average September

    68.8 °F

  • Highest 4 September, 2026

    95 °F

Climate (2021–2026)

Sidney-Richland (18 miles)

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  • Average Low 2021–2026

    32.1 °F

  • Average 2021–2026

    44 °F

  • Average High 2021–2026

    56 °F
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