Current Outlook

10/26/2020 Slow warming trend through the week with mostly dry conditions

“Overnight low temperatures will continue to be quite cold for the beginning of the week. However, a slow warming trend has already started and temperatures will slowly warm as the week progresses...”

Recent Outlooks

10/23/2020 Potential record breaking cold over the weekend with temperatures recovering early next week

“Cold temperatures, possibly record breaking, continue to remain in the forecast for this weekend. As the current weather system continues to move through the state from the northwest to the southeast, a potent cold air surge will move in from the north/northeast. This will work to drop overnight low temperatures into the teens Saturday and Sunday night in many fruit growing regions east of the Cascades. With clear skies by Saturday night and winds trending light to calm by Sunday, climatological..”

10/19/2020 COLD temperatures expected by mid week

“The main weather story for the upcoming outlook period is defined by cold temperatures. A potent cold front is expected to move into the state from the north Wednesday dropping low temperatures into the 20s in many locations east of the Cascades...”

10/16/2020 Unsettled conditions to dominate the week

“For the next week, Washington will continue to be situated between a strong ridge over the Northeast Pacific and a robust trough centered over the Canadian Prairies. This will keep upper level flow over the state northwesterly...”

10/12/2020 Regional rain and wind event Tuesday followed by calming conditions

“The last of this set of frontal systems is expected cross Washington overnight Monday into Tuesday, bringing rain and strong winds to much of the state. Cooler temperatures and lowered snow levels will follow this front, but by the time that happens much of the precipitation will have ended. Wednesday begins a stretch of drier conditions for most, with a ridge of high pressure building offshore through the end of the week...”

10/9/2020 Active fall weather starting this weekend, giving way to drier conditions later next week

“A strong cold front will cross Washington from Friday evening through Saturday. Anticipate a sudden change in weather with widespread rain to the entire state including modest rainfall even in the arid regions of the state...”

10/5/2020 Continued warm and dry conditions with impactful weather for the weekend and beyond

“Weather conditions are expected to remain warm and dry through the week as a broad low amplitude upper ridge rebuilds over the region after a brief transition to a zonal flow regime. This will help to promote calm to light winds, clear skies, and continued night time inversions with low temperatures remaining in the low 40s for the majority of the fruit growing regions...”

10/2/2020 Upper level ridging remains the dominant factor this week, hint of fall weather beyond

“Upper level ridging will remain the dominant weather pattern over Washington during the period. For the weekend, the ridge will weaken somewhat and shift east, allowing for more (but still weak) onshore flow in Western Washington resulting in areas of low clouds and fog there in the mornings through Sunday. A dry cold front is expected to cross the state Sunday, slightly cooling temperatures and increasing winds in the lee of the Cascades...”

2020 Outlooks-Archive

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Washington State University