Lake Washington Weather Forecast
- 65
- 80
Rain Showers
- 56
- 80
Mostly Sunny
- 63
- 81
Partly Sunny
- 66
- 79
Rain Showers
- 61
- 83
Chance Thunderstorms
- 60
- 81
Mostly Sunny
Today 18 Jul Orange
Areas of smoke early. Areas of smoke. Showers with a chance of Thunderstorms. Some Thunderstorms may produce heavy rainfall this morning. Some Thunderstorms may be severe with damaging Winds and heavy rainfall this afternoon. Highs in the upper 70s. Light and variable Winds, becoming southwest 5 to 10 Mph with Gusts up to 25 Mph. Chance of rain near 100 percent.
Tonight 18 Jul Orange
Showers with a chance of Thunderstorms in the Evening, then a chance of Showers and Thunderstorms after midnight. Some Thunderstorms may be severe with damaging Winds and heavy Rainfall, then some Thunderstorms may produce heavy rainfall after midnight. Humid with Lows in the mid 60s. Southwest Winds 5 to 10 Mph with Gusts up to 25 Mph. Chance of rain near 100 percent.
Lake Washington Temperature Statistics
July Temperature
Newburgh / Stewart (1.2 miles)
Lowest 7 July, 2026
60.8 °FAverage July
77.9 °FHighest 2 July, 2026
102.2 °F
Climate (2021–2026)
Newburgh / Stewart (1.2 miles)
Average Low 2021–2026
43.6 °FAverage 2021–2026
52.5 °FAverage High 2021–2026
61.4 °F