Current Outlook

7/19/2021 Mainly dry this week with highs near average for many

“A cool down is slated to begin Tuesday as an upper level trough begins to work its way across British Columbia. Precipitation is forecast to be limited with some drizzle possible along the Coast and low precipitation thunderstorms in mainly mountainous regions near the Idaho border. Low clouds are likely to be observed through much of Western Washington's lowlands with dry and mostly sunny conditions east of the Cascades. Friday through Sunday should remain dry with temperatures reaching a few d..”

Recent Outlooks

7/12/2021 Alaskan low to bring milder temperatures later this week

“Temperatures are forecast to remain above average for much of Washington through Wednesday under mostly clear skies (with regional hazy and locally smoky conditions) thanks to a transient ridge. The exception will be coastal areas, which should remain under low stratus from the marine layer through the entire week. Wednesday afternoon, the Pacific Northwest begins to fall under the influence of an area of low pressure dropping southward from Alaska. This is forecast to spread some marine influen..”

7/6/2021 Unsettled to start with temperatures remaining above average for many

“A shortwave trough will pass through the region Tuesday evening, bringing with it a chance of dry thunderstorms in and east of the Cascades and breezy conditions for typical windy spots lasting into Wednesday afternoon. Marine air may send low clouds as far as the I-5 corridor both Wednesday and Thursday, limiting afternoon highs in Western Washington lowlands both days. Highs in Eastern Washington will also be moderated somewhat but remain above average. Friday and Saturday, ridging building ov..”

6/28/2021 Extreme heat drawing to a close but above average temperatures continue

“Monday is bringing another day of extreme heat to most locations in Washington. The surface trough responsible for drawing heat into the western half of the state will move eastward overnight resulting in marine flow west of the Cascades and cooler temperatures Tuesday. Some areas may also experience low clouds with more widespread cloud cover in the morning. East of the Cascades, Tuesday is likely to be the hottest day before the surface trough continues eastward Wednesday bringing in moderated..”

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Washington State University