Big Four Lake Weather Forecast
- 56
- 69
Rain Showers Likely
- 62
- 77
Slight Chance Thunderstorms
- 65
- 83
Mostly Sunny
- 63
- 86
Sunny
- 62
- 84
Mostly Sunny
- 63
- 83
Partly Sunny
- 64
- 84
Mostly Sunny
Today 21 Jul Northwest Blue Mountains
Rain Showers in the Morning, then rain Showers likely and a chance of Thunderstorms in the afternoon. Highs in the mid 50s to lower 60s, except in the mid 60s to lower 70s Valleys. Chance of precipitation 90 percent. Rainfall Amounts up to a half of an inch Possible, except higher Amounts possible in Thunderstorms.
Tonight 21 Jul Northwest Blue Mountains
Mostly clear. A chance of Showers and Thunderstorms in the evening. Lows in the upper 40s to mid 50s. Chance of precipitation 30 percent. Rainfall Amounts less than a tenth of an Inch, except higher Amounts possible in Thunderstorms.
Big Four Lake Temperature Statistics
July Temperature
Pullman / Moscow Regional Airport (42.3 miles)
Lowest 4 July, 2025
45.6 °FAverage July
69 °FHighest 1 July, 2025
93.7 °F
Climate (2020–Present)
Pullman / Moscow Regional Airport (42.3 miles)
Average Low 2020–2025
39.1 °FAverage 2020–2025
49.2 °FAverage High 2020–2025
59.1 °F