Knife River Weather Forecast
- 53
- 80
Slight Chance Thunderstorms
- 49
- 77
Slight Chance Thunderstorms
- 49
- 71
Slight Chance Thunderstorms
- 48
- 72
Partly Sunny
- 49
- 78
Mostly Sunny
- 51
- 83
Mostly Sunny
Today 16 Sep Richland
Mostly sunny. A slight chance of Thunderstorms in the afternoon. Highs in the upper 70s. West wind around 5 Mph, becoming northeast in the afternoon. Chance of precipitation 20 percent.
Tonight 16 Sep Richland
Partly cloudy in the Evening, then mostly cloudy with a slight chance of Showers after midnight. Lows in the lower 50s. Northeast wind around 5 Mph in the Evening, becoming light and variable. Chance of rain 20 percent.
Knife River Temperature Statistics
September Temperature
Sidney-Richland (18 miles)
Lowest 3 September, 2025
46 °FAverage September
60.9 °FHighest 1 September, 2025
90 °F
Climate (2020–Present)
Sidney-Richland (18 miles)
Average Low 2020–2025
31.9 °FAverage 2020–2025
44 °FAverage High 2020–2025
56.2 °F