Lake O' the Dalles Weather Forecast
- 61
- 79
Patchy Fog
- 64
- 80
Chance Rain Showers
- 56
- 80
Chance Thunderstorms
- 52
- 69
Partly Sunny
- 45
- 64
Partly Sunny
- 45
- 68
Mostly Sunny
- 47
- 71
Mostly Sunny
Today 20 Aug Polk
Mostly sunny. Highs in the upper 70s. Northeast Winds around 5 Mph.
Tonight 20 Aug Polk
Decreasing Clouds. Patchy fog in the late evening and overnight. Lows around 60. East Winds up to 5 Mph.
Lake O' the Dalles Temperature Statistics
August Temperature
L O Simenstad Municipal Airport (5.6 miles)
Lowest 1 August, 2025
50.9 °FAverage August
71.9 °FHighest 8 August, 2025
87.1 °F
Climate (2020–Present)
L O Simenstad Municipal Airport (5.6 miles)
Average Low 2020–2025
36.7 °FAverage 2020–2025
47 °FAverage High 2020–2025
56.6 °F