WeatherWatcher: Chill in the air arrives, last week's highlights

 

Dramatic clouds during an active Puget Sound Convergence Zone Sunday October 12, 2025
Photo by Carl Dinse

The next couple of days might be sunny and dry, but it's going to really give us that fall crisp feeling. We are currently experiencing a weather pattern, that if it had occurred in the middle of winter would have produced a small snow event and a deep freeze. Instead of arctic air, I'd call this 'continental air' that is rushing in overnight into Monday morning.

Our fresh continental air that is moving in will have low dew points, bringing relative humidity levels lower than we're used to. This air will also bring sunny skies and clear nights. 

Monday through Wednesday will be brilliantly sunny, with temperatures reaching the upper 50's to low 60's, and low temperatures down to the mid 30's to lower 40s. Frost is possible in places during overnight hours, and this might be a good time to unhook any garden hoses to prevent potential freezing.

Our next round of clouds and rain showers starts to move in Thursday, moderating low temperatures to the mid 40's for the remainder of our week. High temperatures are expected to remain near 60°F. As we move through Friday and next weekend you can expect more rounds of clouds and rain to move through the area.

Last week's highlights:

• High temperature: 73.8°F (Tuesday)
• Low temperature: 44.4°F (Monday morning)
• Rainiest day: 0.03 inches (Thursday)
• Average temperature: 54.4°F (1°F above normal)

Daily high and low temperatures compared to normal at the (North Ridge) Echo Lake Weather Station

If it weren't for our warm Tuesday reaching 73°F we would have been below or at a near normal temperature for all last week. It was significantly cooler overall compared to the week before where we came in at 59.2°F for our overall average.

Accumulated rainfall at the (North Ridge) Echo Lake Weather Station

We had a dry start to October but after the week ended, we received 0.66 inches of rain on Saturday. Additional rainfall occurred throughout the region on Sunday but Shoreline and Lake Forest Park sort of fell in the rain shadow. 

Our month total so far is 0.83 inches of rain, currently putting us at three quarters of an inch below average.

For current weather conditions please visit www.shorelineweather.com