AgWeatherNet Weekly Weather Outlook Monday Update for June 22 to June 28, 2020

A hot week with more seasonable temperatures and rain for the weekend.

Craig Oswald, Field Meteorologist, 509-786-9256

Discussion:

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 100°F in a few locations throughout central and south central Washington with highs to remain a bit cooler, yet warmer than average, elsewhere. Wednesday will see scattered rain showers move in from the west as a shortwave trough and weak frontal boundary pass through the Pacific Northwest. Showers look to be mostly relegated to Western Washington and mountain areas such as the Cascades and those of northern Washington, however, central and eastern Washington stand a chance to see a stray rain shower or two none the less. Unfortunately, the quick passage of the trough and frontal boundary Wednesday doesn't look to be enough to help relieve the hot temperatures being experienced through many parts of the state. In fact, daytime highs are likely to remain well above average with only a few degrees of relief Wednesday.

A transition back to zonal flow aloft is expected to be in place by Thursday, returning the state to dry conditions through the end of the week. Temperatures are also expected to remain above average through the end of the week.

Models currently indicate a respectable upper trough to build into Washington from the northwest Saturday. The main impacts are expected to be a round of scattered rain showers, breezy conditions, and temperatures cooling to seasonable. Scattered showers can be expected statewide, with much less shower activity through central and south central parts of Washington however. Weather conditions will likely remain unsettled through the weekend with on/off rain showers and breezy conditions. The intensity and consistency of showers will ultimately depend on the strength and exact positioning of the trough and expectant upper low through the weekend. This disturbance will continue to be monitored and discussed more in depth during Fridays outlook.


Important Points about Next Week's Weather

South Central Washington
Remainder of the Week
  • Wind: Generally light and SW yet variable. Becoming more W/SW and breezy Wednesday before trending lighter for Thursday. Breezy again by Friday evening with winds beginning to shift NW.
  • Precipitation: Low chance for a stray rain shower Wednesday and Wednesday night. Otherwise dry conditions expected.
  • High Temps: Upper 90s Tue, low 90s Wed, low 90s Thu, mid 90s Fri.
  • Low Temps: Near 60 Mon night, low 60s Tue night, upper 50s Wed night, low 60s Thu night.
  • Sky Cover: Clear Mon night, sunny Tue, mostly clear Tue night, mostly sunny Wed, partly cloudy Wed night, sunny Thu, mostly clear Thu night, sunny Fri.

Weekend
  • Wind: Mostly W/NW and breezy. Windier on Saturday. Winds to trend light Sunday night.
  • Precipitation: Chance for a rain shower or two by Saturday afternoon. More showers likely Saturday night and Sunday.
  • High Temps: Upper 80s Sat, low 80s Sun.
  • Low Temps: Low 60s Fri night, mid 50s Sat night, low 50s Sun night.
  • Sky Cover: Mostly sunny to partly cloudy.

North Central Washington
Remainder of the Week
  • Wind: Generally light and SW yet variable. Becoming more W/SW and breezy Wednesday, mostly through the Basin, before trending lighter for Thursday. Breezy again by Friday evening (more so through the Basin) with winds beginning to shift NW. Local gusty conditions with any thunderstorm activity Wednesday.
  • Precipitation: Upland and mountain rain showers likely Wednesday and Wednesday night with the threat for a thunderstorm or two. Low chance for a stray rain shower through the Basin and lower elevations. Otherwise dry conditions expected through the week.
  • High Temps: Low 90s Tue, upper 80s Wed, near 90 Thu, low 90s Fri. Cooler through high terrain.
  • Low Temps: Upper 50s Mon night, mid 60s Tue night, near 60 Wed night, low 60s Thu night. Cooler through high terrain and deep valleys.
  • Sky Cover: Mostly clear Mon night, mostly sunny Tue, mostly cloudy Tue night, partly sunny Wed, mostly clear Wed night, sunny Thu, mostly clear Thu night, sunny Fri.

Weekend
  • Wind: Mostly W/NW and breezy. Windier on Saturday, primarily through the Basin. Winds to trend light Sunday night.
  • Precipitation: Rain showers moving into upland areas Saturday. A few showers likely through lowland areas by the afternoon. Showers to remain through Sunday with greater activity in upland areas.
  • High Temps: Mid 80s Sat, mid 70s Sun. Cooler through high terrain.
  • Low Temps: Low 60s Fri night, mid 50s Sat night, mid 50s Sunday night. Cooler through high terrain and deep valleys.
  • Sky Cover: Mostly sunny to partly cloudy.

Eastern Washington
Remainder of the Week
  • Wind: Generally light and SW yet variable. Becoming more W/SW and breezy Wednesday before trending lighter for Thursday. Breezy again by Friday evening with winds beginning to shift NW.
  • Precipitation: A scattered rain shower or two Wednesday and Wednesday night. Otherwise dry conditions expected.
  • High Temps: Mid 80s Tue, low 80s Wed, low 80s Thu, mid 80s Friday.
  • Low Temps: Near 50 Mon night, near 60 Tue night, mid 50s Wed night, mid 50s Thu night.
  • Sky Cover: Clear Mon night, sunny Tue, partly cloudy Tue night, partly sunny Wed, partly cloudy Wed night, sunny Thu, mostly clear Thu night, sunny Fri.

Weekend
  • Wind: Mostly W/NW and breezy. Windier on Saturday. Winds to trend light Sunday night.
  • Precipitation: Chance for a few rain showers by Saturday afternoon. More showers likely Saturday night and becoming more widespread Sunday.
  • High Temps: Upper 70s Sat, upper 60s Sun.
  • Low Temps: Near 60 Fri night, low 50s Sat night, upper 40s Sun night.
  • Sky Cover: Mostly sunny to partly cloudy.

Western Washington
Remainder of the Week
  • Wind: Generally W and light yet variable. Becoming a bit breezier Wednesday, especially near coastal areas. Winds to ease through Wednesday night. Becoming breezier again Friday evening with winds mostly NW.
  • Precipitation: Scattered rain showers Wednesday and Wednesday night with more consistent showers through the Olympics and Cascades. Otherwise dry conditions expected.
  • High Temps: Mid 80s Tue, upper 70s Wed, low 80s Thu, low 80s Fri. Much cooler through the Cascades and Olympics.
  • Low Temps: Mid 50s Mon night, mid 50s Tue night, mid 50s Wed night, mid 50s Thu night. Much cooler through the Cascades and Olympics.
  • Sky Cover: Mostly clear Mon night, mostly sunny Tue, mostly cloudy Tue night, mostly cloudy Wed, partly cloudy Wed night, mostly sunny Thu, mostly clear Thu night, sunny Fri.

Weekend
  • Wind: Mostly W/NW and breezy, especially near the coast. Slightly windier on Saturday. Winds to trend light and variable Sunday night.
  • Precipitation: Scattered rain showers to begin moving into NW portions of the region as early as Friday night. Showers remaining through the weekend with greater shower activity expected Sunday. More consistent showers through the Cascades and Olympics.
  • High Temps: Low 70s Sat, low 70s Sun. Much cooler through the Cascades and Olympics.
  • Low Temps: Mid 50s Fri night, low 50s Sat night, low 50s Sun night. Much cooler through the Cascades and Olympics.
  • Sky Cover: Mostly sunny to mostly cloudy.

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