Current Outlook

7/10/2020 Existing weather pattern continues into mid-July with seasonally cool temperatures and weak disturbances to bring periodic showers

“Although the calendar reads mid-July, the large-scale weather remains in a late spring-like pattern that will continue to bring seasonally cool temperatures and occasional clouds/rain showers. High pressure usually becomes established in the Gulf of Alaska in mid-summer, but this year the high is centered farther south than normal, west of Oregon, leading to persistent cool onshore flow and a steady parade of weak weather systems arriving from the west-northwest...”

Recent Outlooks

7/2/2020 A few mountain rain showers through an overall dry period

“The main influencer for this weekends weather looks to be a long wave trough situated just to the north of Washington in western Canada. The brunt of the sensible weather impacts will remain with our friends to the north as Washington resides mostly under westerly/southwesterly flow through the base of the trough...”

6/29/2020 Weather remaining slightly unsettled and cooler than average

“Weather conditions for the week continue to look a bit unsettled as a potent cut off low continues to reside over Idaho. Currently on Monday afternoon, rain showers look to be relegated to the far southeast corner of the state with a few scattered showers present throughout the Palouse...”

6/26/2020 Robust upper trough to be major driver for unsettled conditions and much cooler temperatures

“The region of anomalously high surface pressure near the west coast that helped to bring above average temperatures throughout the state this week will lose its grip on the region this weekend. This area of high pressure looks to move west and north, encroaching on Alaska, and help build a strong trough downstream and directly over the Pacific Northwest bringing a round of MUCH cooler temperatures and some rainy weather...”

6/22/2020 A hot week with more seasonable temperatures and rain for the weekend.

“Weather conditions for Tuesday look to remain dry and warmer than average as an upper ridge continues to reside over the state. High temperatures Tuesday look to edge to 100F in a few locations throughout central and south central Washington with highs to remain a bit cooler, yet warmer than average, elsewhere...”

6/19/2020 Unsettled conditions this weekend with a heat wave expected mid week

“A shortwave trough is expected to move across Washington this weekend. This will bring an end to the sunny skies of the past few days to areas west of the Cascades...”

6/15/2020 Mostly dry conditions statewide by mid week

“This past weekend saw some rather interesting weather throughout the region as more thunderstorms than anticipated in Fridays outlook persisted through many parts of Washington state. Most of the thunderstorm activity beyond Friday and through the course of the weekend was quite modest in nature, producing some gusty generally non-damaging winds, a little bit of lightning, localized areas of moderate to heavy rain, and a few instances of interesting storm/cloud structure as relayed on social med..”

2020 Outlooks-Archive

2019 Outlooks-Archive

2018 Outlooks-Archive

2017 Outlooks-Archive

2016 Outlooks-Archive

2015 Outlooks-Archive

2014 Outlooks-Archive

2013 Outlooks Archive

2012 Outlooks Archive

2011 Outlooks Archive

Washington State University