AgWeatherNet Weekly Weather Outlook Monday Update for May 03 to May 09, 2021

Dry conditions Tue & Wed, becoming more active Thursday through the weekend

Mark Ingalls, AgWeatherNet Intern

Synopsis:

A weak cold front will cross the state this evening and overnight followed by a weak ridge that forecast to transit the Pacific Northwest on Tuesday and Wednesday to bring mostly dry conditions to Washington. A warming trend is expected to coincide with this ridge, with the warmest day being Wednesday west of the Cascades and Thursday to the east. Clouds begin to increase in Western Washington on Wednesday with a cold front entering the region overnight. This front will move west to east bringing with it rain showers, crossing into Eastern Washington on Thursday. Friday a second cold front moves in as an upper level trough settles overhead to keep cooler temperatures, breezy areas, and rain showers in Washington through the weekend.

Discussion:

A cold front crossing the region this evening and overnight may bring a few rain showers to Western Washington and mountainous parts of the state. This is expected to clear out Tuesday as a weak ridge of high pressure moves in from the west. This will result in dry conditions and a warming trend through Wednesday west of the Cascades and through Thursday in the eastern half of the state. Many locations along the I-5 Corridor will likely peak in the 70s, with some portions of the Columbia Basin expected to reach into the 80s before cooling off.

Clouds begin moving into Western Washington Wednesday afternoon ahead of a cold front that should reach the coast Wednesday evening. The front will bring rain showers to much of the state, crossing the Cascades on Thursday. Arid regions are not likely to see any drought busting rain, but some light rain might be observed in lower elevations of Central Washington Thursday night.

A second front reaches the coast Friday along with the axis of a large upper level trough. This will keep rain chances in place for many areas of the state, with arid Eastern Washington locations seeing a low chance of showers Saturday. The trough is forecast to settle over the Pacific Northwest for the remainder of the weekend, which should result in lasting cooler temperatures and precipitation chances. With each frontal boundary, typical windy locations will likely be breezy to windy as the individual fronts move through.


Important Points About Next Week's Weather

South Central Washington
Remainder of the Week
  • Wind: W with breezy areas Tue, light and variable Wed, W to SW and breezy Thu-Fri.
  • Precipitation: Low chance of rain Thu night.
  • High Temps: Mid 70s Tue, near 80 Wed & Thu, mid 60s Fri.
  • Low Temps: Mid 40s Mon night, near 40 Tue night, low 50s Wed night, upper 40s Thu night, mid 40s Fri night.
  • Sky Cover: Mostly clear Tue & Wed, mostly cloudy Thu, partly cloudy Fri.
Weekend
  • Wind: W to SW with breezy areas.
  • Precipitation: Low chance of rain Sat & Sun.
  • High Temps: Near 70 Sat & Sun.
  • Low Temps: Mid 40s Sat & Sun nights.
  • Sky Cover: Mostly cloudy.

North Central Washington
Remainder of the Week
  • Wind: W with breezy areas Tue, light and variable Wed, W to SW and breezy Thu-Fri.
  • Precipitation: Chance of rain Thu & Fri, best chance in upslope areas.
  • High Temps: Low 70s Tue, mid 70s Wed & Thu, low 60s Fri. Cooler in higher terrain.
  • Low Temps: Mid 40s Mon-Tue nights, low 50s Wed night, mid 40s Thu night, low 40s Fri night. Cooler in higher terrain.
  • Sky Cover: Mostly clear Tue, increasing clouds Wed, mostly cloudy Thu-Fri.
Weekend
  • Wind: W to SW with breezy areas in the Basin.
  • Precipitation: Chance of rain, best chance in upslope areas.
  • High Temps: Upper 60s Sat & Sun. Cooler in higher terrain.
  • Low Temps: Mid 40s Sat & Sun nights. Cooler in higher terrain.
  • Sky Cover: Mostly cloudy.

Eastern Washington
Remainder of the Week
  • Wind: W with breezy areas Tue, light and variable Wed, W to SW and breezy Thu-Fri.
  • Precipitation: Chance of rain Thu & Fri.
  • High Temps: Upper 60s Tue, mid 70s Wed & Thu, low 60s Fri. Warmer in the Lewis & Clark Valley.
  • Low Temps: Near 40 Mon-Tue nights, near 50 Wed night, low 40s Thu night, near 40 Fri night. Warmer in the Lewis & Clark Valley.
  • Sky Cover: Partly cloudy Tue & Wed, mostly cloudy Thu & Fri.
Weekend
  • Wind: W to SW with breezy areas.
  • Precipitation: Chance of rain Sat.
  • High Temps: Low 60s Sat & Sun. Warmer in the Lewis & Clark Valley.
  • Low Temps: Near 40 Sat & Sun nights. Warmer in the Lewis & Clark Valley.
  • Sky Cover: Mostly cloudy.

Western Washington
Remainder of the Week
  • Wind: W Tue, E to NE Wed, S and breezy Thu-Fri.
  • Precipitation: Chance of rain Mon night, rain likely Thu & Fri.
  • High Temps: Mid 60s Tue, low 70s Wed, low 60s Thu, upper 50s Fri. Cooler in higher terrain.
  • Low Temps: Upper 40s Mon night, mid 40s Tue night, low 50s Wed night, mid 40s Thu-Fri nights. Cooler in higher terrain.
  • Sky Cover: Partly cloudy Tue, mostly cloudy Wed-Fri.
Weekend
  • Wind: NW and breezy on the coast Sat, W Sun.
  • Precipitation: Chance of rain Sat & Sun.
  • High Temps: Near 60 Sat & Sun. Cooler in higher terrain.
  • Low Temps: Upper 40s Sat & Sun nights.
  • Sky Cover: Mostly cloudy to overcast.

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