Expires:202512211200;;936573 FPUS56 KSEW 202131 ZFPSEW Zone Forecast Product for Western Washington National Weather Service Seattle WA 130 PM PST Sat Dec 20 2025 Spot temperatures and probabilities of measurable precipitation are for tonight, Sunday, Sunday night, and Monday. WAZ311-211200- Lowlands of Western Skagit and Northwestern Snohomish Counties- Including the cities of Anacortes, Mount Vernon, Sedro-Woolley, Burlington, and Arlington 130 PM PST Sat Dec 20 2025 .TONIGHT...Rain at times in the evening, then rain likely in the late evening and early morning. Rain at times late in the night. Rainfall amounts a tenth to a quarter of an inch possible. Lows in the upper 30s to mid 40s. Southeast wind 10 to 20 mph. .SUNDAY...Breezy. Rain likely in the morning, then a chance of rain early in the afternoon. Rain at times late in the afternoon. Rainfall amounts a tenth to a quarter of an inch possible. Highs in the mid 40s to lower 50s. Southeast wind 15 to 25 mph becoming south in the afternoon. .SUNDAY NIGHT...Rain at times in the evening, then rain likely after midnight. Rainfall amounts a tenth to a quarter of an inch possible. Lows near 40. South wind 10 to 15 mph. .MONDAY...Breezy. Rain likely in the morning, then rain at times in the afternoon. Rainfall amounts a tenth to a quarter of an inch possible. Highs in the mid to upper 40s. Southeast wind 15 to 25 mph with gusts to 35 mph. .MONDAY NIGHT...Breezy. Rain at times in the evening, then rain likely after midnight. Rainfall amounts a quarter to a half inch possible. Lows near 40. South wind 15 to 25 mph with gusts to 35 mph. .TUESDAY...Mostly cloudy with a chance of rain. Highs in the mid to upper 40s. .TUESDAY NIGHT...Mostly cloudy. A slight chance of rain in the evening, then a slight chance of rain and snow after midnight. Lows in the mid 30s. .WEDNESDAY...Mostly cloudy. A chance of rain and snow in the morning, then a chance of rain in the afternoon. Highs in the lower to mid 40s. .WEDNESDAY NIGHT...Mostly cloudy with a chance of rain. Lows in the lower 30s. .CHRISTMAS DAY...Mostly cloudy with a chance of rain. Highs in the lower 40s. .THURSDAY NIGHT...Mostly cloudy with a chance of rain. Lows in the lower 30s. .FRIDAY...Mostly cloudy with a chance of rain. Highs in the lower to mid 40s. .FRIDAY NIGHT...Mostly cloudy with a chance of rain. Lows in the lower to mid 30s. .SATURDAY...Mostly cloudy with a chance of rain. Highs in the mid 40s. && TEMPERATURE / PRECIPITATION Anacortes 42 47 39 47 / 90 90 80 90 Mount Vernon 43 47 40 47 / 90 90 90 90 $$