Rosario Head Weather Forecast
- 48
- 55
Chance Rain Showers
- 49
- 58
Partly Sunny
- 50
- 58
Partly Sunny
- 50
- 59
Mostly Cloudy
- 50
- 59
Partly Sunny
- 50
- 59
Mostly Cloudy
Today 16 May Lowlands of Western Skagit and Northwestern Snohomish Counties
Mostly cloudy until late afternoon then becoming mostly sunny. Showers likely in the Morning, then a chance of Showers in the late morning and early afternoon. A slight chance of Thunderstorms in the afternoon. Rainfall Amounts a quarter to a half inch Possible, except higher Amounts possible in Thunderstorms. Highs in the mid 50s to lower 60s. South wind 10 to 15 Mph becoming west in the afternoon.
Tonight 16 May Lowlands of Western Skagit and Northwestern Snohomish Counties
Partly cloudy in the evening then becoming mostly cloudy. A slight chance of Showers. Lows in the 40s. West wind 10 to 20 Mph.
Rosario Head Temperature Statistics
May Temperature
Whidbey Island Naval Air Station - Ault Field (3.7 miles)
Lowest 12 May, 2026
45 °FAverage May
53.6 °FHighest 3 May, 2026
66.9 °F
Climate (2021–Present)
Whidbey Island Naval Air Station - Ault Field (3.7 miles)
Average Low 2021–2026
44.5 °FAverage 2021–2026
50.1 °FAverage High 2021–2026
56.1 °F