AgWeatherNet Weekly Weather Outlook for June 07 to June 13, 2021

Showers in the mountains and Western Washington, relatively cool statewide

Mark Ingalls, AgWeatherNet Intern

Note: Starting next week, outlooks will only be issued on Mondays. This allows our team to focus more on network maintenance. Friday outlooks will resume this fall.

Synopsis:

An active weather pattern is slated for the next week under the influence of several low pressure systems. Tuesday, a low pressure center approaches the Oregon Coast, keeping showers in place for Western Washington and some eastern mountains through Wednesday. Thursday a cold front is expected to move the first low eastward as a new upper level trough moves into the region to continue rain showers in Western Washington and eastern mountains. The trough axis remains offshore through the weekend and southwesterly is forecast to bring a warming trend into the eastern half of the state into the weekend. Shortwave disturbances moving through the mean flow keep a chance of showers in place for all but arid parts of Washington through the end of the forecast period.

Discussion:

Showers are tapering off Monday afternoon but are expected to increase in coverage again Tuesday with a low pressure system approaching the Oregon Coast. This will interact with another low allowing for the chance of rain to continue through Wednesday for Western Washington as well as mountainous areas. Eastern lowlands should remain dry but a few spots may see elevated wind speeds. Partly cloudy skies are forecast in Eastern Washington Tuesday but clouds should increase Wednesday thanks to the low.

Thursday the current weather pattern is pushed out by an incoming cold front that is expected to bring more shower activity into the region. Again rain is expected to be restricted to Western Washington and the mountains along with increased clouds in Eastern Washington lowlands. Behind the cold front is an upper level trough that is likely to sit offshore through the weekend.

The trough, interacting with a building ridge over the Plains states, is forecast to turn the upper level flow pattern to out of the southwest. In Western Washington and the Cascades this should keep rain showers in place through the weekend. East of the Cascades, warming temperatures are likely. A few shortwave disturbances moving through the mean flow might inject some enhanced moisture to bring a chance of showers for the Columbia Basin and surrounding areas. More likely than rain, however, is mostly cloudy skies and locally windy conditions.


8 to 14 Day Outlook, June 15 to June 21, 2021
  • Above average temperatures and below average precipitation are favored for the period.

Important Points About Next Week's Weather

South Central Washington
Remainder of the Week
  • Wind: Generally W with breezy areas Tue-Fri.
  • Precipitation: Dry conditions expected.
  • High Temps: Mid 70s Tue-Thu, near 80 Fri.
  • Low Temps: Low 50s Mon-Thu nights, mid 50s Fri night.
  • Sky Cover: Partly cloudy Tue, mostly cloudy Wed, partly cloudy Thu, mostly cloudy Fri.
Weekend
  • Wind: S and light Sat, variable with breezy areas Sun.
  • Precipitation: Low chance of rain showers.
  • High Temps: Low 80s Sat, upper 80s Sun.
  • Low Temps: Upper 50s Sat night, low 60s Sun night.
  • Sky Cover: Partly to mostly cloudy.

North Central Washington
Remainder of the Week
  • Wind: Generally W with breezy areas Tue-Fri.
  • Precipitation: Upslope showers possible Tue.
  • High Temps: Low 70s Tue-Fri. Cooler in higher terrain.
  • Low Temps: Near 50 Mon-Wed nights, low 50s Thu-Fri nights. Cooler in higher terrain and sheltered areas.
  • Sky Cover: Partly cloudy Tue-Thu, mostly cloudy Fri.
Weekend
  • Wind: S and light Sat, variable with breezy areas Sun.
  • Precipitation: Low chance of showers.
  • High Temps: Upper 70s Sat, mid 80s Sun. Cooler in higher terrain.
  • Low Temps: Upper 50s Sat night, low 60s Sun night. Cooler in higher terrain and sheltered areas.
  • Sky Cover: Partly to mostly cloudy.

Eastern Washington
Remainder of the Week
  • Wind: Generally SW with breezy areas Tue-Fri.
  • Precipitation: Upslope showers possible Wed & Thu.
  • High Temps: Low 70s Tue-Fri. Warmer in the Lewis & Clark Valley.
  • Low Temps: Mid 40s Mon night, near 50 Tue-Wed nights, mid 40s Thu-Fri nights. Warmer in the Lewis & Clark Valley.
  • Sky Cover: Mostly cloudy.
Weekend
  • Wind: S and light Sat, variable with breezy areas Sun.
  • Precipitation: Low chance of showers.
  • High Temps: Upper 70s Sat, upper 80s Sun. Warmer in the Lewis & Clark Valley.
  • Low Temps: Low 50s Sat night, upper 50s Sun night. Warmer in the Lewis & Clark Valley.
  • Sky Cover: Partly to mostly cloudy.

Western Washington
Remainder of the Week
  • Wind: Generally light and variable Tue-Thu except breezy periods on the Coast and in the Strait. S and breezy Fri.
  • Precipitation: Rain showers.
  • High Temps: Mid 60s Tue-Fri. Cooler in higher terrain.
  • Low Temps: Near 50 Mon-Thu nights, mid 50s Fri night. Cooler in higher terrain.
  • Sky Cover: Mostly cloudy to overcast.
Weekend
  • Wind: Light and variable.
  • Precipitation: Rain showers.
  • High Temps: Near 70 Sat & Sun. Cooler in higher terrain.
  • Low Temps: Mid 50s Sat & Sun nights. Cooler in higher terrain.
  • Sky Cover: Mostly cloudy to overcast.

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