Castle Lake Weather Forecast
- 34
- 47
Snow
- 31
- 41
Rain/Snow
- 30
- 41
Snow
- 34
- 50
Chance Rain
- 40
- 58
Mostly Cloudy
- 43
- 63
Partly Sunny
Today 31 Mar South Washington Cascades
Mostly cloudy with a chance of snow and rain. Snow level 4000 feet in the afternoon. No snow accumulation. Southeast wind 5 to 10 Mph, becoming south in the afternoon. Chance of precipitation 50 percent. Rainfall Amounts less than a tenth of an inch.
Tonight 31 Mar South Washington Cascades
Partly cloudy. Free air freezing level 4000 feet. East wind 5 to 10 Mph.
Castle Lake Temperature Statistics
March Temperature
Southwest Washington Regional Airport (30.4 miles)
Lowest 22 March, 2026
28.9 °FAverage March
47.4 °FHighest 16 March, 2026
66 °F
Climate (2021–Present)
Southwest Washington Regional Airport (30.4 miles)
Average Low 2021–2026
45.1 °FAverage 2021–2026
53 °FAverage High 2021–2026
62.5 °F