Williams Lake Weather Forecast
- 55
- 86
Mostly Sunny
- 54
- 86
Mostly Sunny
- 55
- 84
Partly Sunny
- 44
- 73
Mostly Sunny
- 48
- 74
Mostly Sunny
- 52
- 83
Partly Sunny
Today 18 Sep Spokane Area
Sunny. Highs in the mid 80s. Light wind.
Tonight 18 Sep Spokane Area
Mostly clear. Lows in the 50s. Light wind.
Williams Lake Temperature Statistics
September Temperature
Fairchild Air Force Base (19.9 miles)
Lowest 15 September, 2025
51.4 °FAverage September
70.7 °FHighest 3 September, 2025
98.2 °F
Climate (2020–Present)
Fairchild Air Force Base (19.9 miles)
Average Low 2020–2025
39.2 °FAverage 2020–2025
49 °FAverage High 2020–2025
58.7 °F