Mount St. Helens Aero Ranch Weather Forecast
- 39
- 51
Rain
- 37
- 46
Rain
- 34
- 49
Rain Showers
- 37
- 56
Mostly Sunny
- 43
- 64
Partly Sunny
- 46
- 68
Mostly Cloudy
Today 31 Mar South Washington Cascade Foothills
Mostly cloudy with a chance of rain with a slight chance of snow in the Morning, then partly sunny with a slight chance of rain in the afternoon. No snow accumulation. Highs in the mid 50s. East 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 Cascade Foothills
Partly cloudy. Widespread frost. Lows in the mid 30s. East wind 5 to 10 Mph.
Mount St. Helens Aero Ranch Temperature Statistics
March Temperature
Southwest Washington Regional Airport (25.5 miles)
Lowest 22 March, 2026
28.9 °FAverage March
47.4 °FHighest 16 March, 2026
66 °F
Climate (2021–Present)
Southwest Washington Regional Airport (25.5 miles)
Average Low 2021–2026
45.1 °FAverage 2021–2026
53 °FAverage High 2021–2026
62.5 °F