Lake Sacajawea Weather Forecast
- 62
- 84
Mostly Cloudy
- 58
- 80
Slight Chance Rain Showers
- 61
- 87
Mostly Sunny
- 63
- 94
Sunny
- 63
- 97
Hot
- 60
- 94
Mostly Sunny
Today 20 Jul Lower Columbia Basin of Washington
Mostly cloudy. Highs in the lower to mid 80s. Southwest wind 5 to 15 Mph.
Tonight 20 Jul Lower Columbia Basin of Washington
Cloudy. Lows in the lower to mid 60s. Southwest wind 5 to 10 Mph.
Lake Sacajawea Temperature Statistics
July Temperature
Tri-Cities Airport (18.6 miles)
Lowest 6 July, 2025
52.6 °FAverage July
77.4 °FHighest 13 July, 2025
104.6 °F
Climate (2020–Present)
Tri-Cities Airport (18.6 miles)
Average Low 2020–2025
42.8 °FAverage 2020–2025
55.5 °FAverage High 2020–2025
67.9 °F