AgWeatherNet Weekly Weather Outlook Monday Update for Apr 27 to May 3, 2020

Unsettled weather and fluctuating temperatures mid week

Craig Oswald, Field Meteorologist, 509-786-9256

Discussion:

The remainder of the weeks weather looks to be a bit unsettled as Washington remains in a mostly west/southwest flow pattern. Weather can be expected to be similar to what the state has been experiencing the last few days. Today's (Monday) weak frontal boundary that has moved into the Pacific northwest from the west, bringing some scattered showers through western and far eastern portions of the state, along with strong winds statewide, looks to finish moving through the region tonight. However, another surface cyclone moving across the north Pacific and into northern British Columbia is expected to bring another round of precipitation as its decaying cold front makes its way into Washington from the west beginning Tuesday evening.

Rain showers can be expected throughout western Washington beginning Tuesday evening and look to remain mostly scattered. Conditions will likely remain wet through Thursday due to the increased instability before trending dry Thursday night. Due to the mostly zonal flow of the current weather pattern, interior portions of the state, east of the Cascades will likely remain dry through the week. North central Washington, particularly upland areas, and far eastern Washington along the Idaho border have a chance at seeing a few scattered rain showers through mid week. Conditions look to turn dry statewide Thursday night.

Another surface cyclone in the north Pacific looks to bring rain into the state Saturday. Rain is expected to move into the state form the southwest, bringing showers to western Washington and a better chance for rain throughout eastern Washington. Showers may linger through Sunday.

With the passage of the afore mentioned cold fronts this week, low temperatures may drop cool enough to cause some concern for fruit growing areas of the state tonight and Thursday night. While skies are expected to hold a bit of cloud cover both nights, winds look to trend lighter. Low dew points throughout eastern portions of the state and cooler air aloft could put overnight lows in cold locations of north central Washington near 30 tonight and Thursday night. Overnight lows in south central Washington look to be in the low 30s in cold locations both Monday and Thursday nights. Dew points will be much higher through western Washington, keeping overnight temperatures in the upper 30s in most locations both nights, even though temperatures aloft are expected to be slightly cooler than those of eastern Washington.


Important Points about Next Week's Weather

South Central Washington
Remainder of the Week
  • Wind: Windy conditions to trend lighter through the overnight Monday with winds becoming light and from the S yet variable. Becoming breezy and W/SW Wednesday with some gusts around 35mph by Thursday. Trending back to light and S yet variable Thursday night.
  • Precipitation: Dry conditions expected.
  • High Temps: Mid 70s Tuesday, near 80 Wednesday, low 70s Thursday, low 70s Friday.
  • Low Temps: Low 40s Monday night, upper 40s Tuesday night, near 50 Wednesday night, upper 30s Thursday night.
  • Sky Cover: mostly clear Monday night, sunny Tuesday, partly cloudy Tuesday night, partly sunny Wednesday, mostly cloudy Wednesday night, partly sunny Thursday, partly cloudy Thursday night, mostly sunny Friday.

Weekend
  • Wind: SW and light yet variable. Becoming breezy at times during the day.
  • Precipitation: Scattered rain showers to move in from the SW Saturday/Saturday night. Remaining in the area Sunday. Trending dry Sunday night.
  • High Temps: Mid 70s Saturday, upper 60s Sunday.
  • Low Temps: Mid 40s Friday night, low 40s Saturday night, low 40s Sunday night.
  • Sky Cover: Partly sunny to mostly cloudy.

North Central Washington
Remainder of the Week
  • Wind: Windy conditions to trend lighter through the overnight Monday with winds becoming light and from the S yet variable. Becoming breezy and W/SW Wednesday with some gusts around 35mph by Thursday, especially through the Basin. Trending back to light and S yet variable Thursday night.
  • Precipitation: Scattered rain showers to move in from the W/SW Saturday/Saturday night. Remaining in the area Sunday. Trending dry Sunday night with upland showers likely to linger into Monday.
  • High Temps: Upper 60s Tuesday, mid 70s Wednesday, upper 60s Thursday, upper 60s Friday. Cooler through higher terrain.
  • Low Temps: Upper 30s Monday night, mid 40s Tuesday night, upper 40s Wednesday night, upper 30s Thursday night. Cooler through higher terrain.
  • Sky Cover: Mostly clear Monday night, partly sunny Tuesday, mostly cloudy Tuesday night, mostly cloudy Wednesday, mostly cloudy Wednesday night, partly sunny Thursday, partly cloudy Thursday night, mostly sunny Friday.

Weekend
  • Wind: SW and light yet variable. Becoming breezy at times during the day.
  • Precipitation: Widespread rain showers to move in from the W Saturday. Trending dry Saturday night. Dry Sunday.
  • High Temps: Upper 60s Saturday, low 60s Sunday. Cooler through higher terrain.
  • Low Temps: Mid 40s Friday night, low 40s Saturday night, low 40s Sunday night. Cooler through higher terrain.
  • Sky Cover: Mostly cloudy.

Eastern Washington
Remainder of the Week
  • Wind: Windy conditions to trend lighter through the overnight Monday with winds becoming light and from the S yet variable. Becoming breezy and SW Wednesday with some gusts around 35mph by Thursday. Trending back to light and S yet variable Thursday night.
  • Precipitation: Chance for a scattered rain shower or two Wednesday, Wednesday night, and Thursday before trending dry Thursday night. Greater chance for showers along the Idaho border. Basin and interior areas of the region likely to remain dry.
  • High Temps: Mid 60s Tuesday, low 70s Wednesday, near 60 Thursday, low 60s Friday.
  • Low Temps: Upper 30s Monday night, mid 40s Tuesday night, upper 40s Wednesday night, upper 30s Thursday night.
  • Sky Cover: Mostly clear Monday night, mostly sunny Tuesday, mostly cloudy Tuesday night, mostly cloudy Wednesday, mostly cloudy Wednesday night, mostly cloudy Thursday, partly cloudy Thursday night, mostly sunny Friday.

Weekend
  • Wind: SW and light yet variable. Becoming breezy at times during the day.
  • Precipitation: Scattered rain showers to move in from the SW Saturday/Saturday night. Remaining in the area Sunday. Trending dry Sunday night.
  • High Temps: Mid 60s Saturday, upper 50s Sunday.
  • Low Temps: Low 40s Friday night, low 40s Saturday night, mid 30s Sunday night.
  • Sky Cover: Partly sunny to mostly cloudy.

Western Washington
Remainder of the Week
  • Wind: Breezy conditions to trend lighter through the overnight Monday with winds becoming light and variable. Becoming breezy and SW Wednesday through Thursday. Trending back to light and variable Thursday night.
  • Precipitation: Scattered rain showers moving back in from the W Tuesday evening. Showers remaining scattered through the week. Trending dry Thursday night.
  • High Temps: Mid 60s Tuesday, mid 60s Wednesday, upper 50s Thursday, mid 60s Friday. Much cooler through the Cascades and Olympics.
  • Low Temps: Near 40 Monday night, mid 40s Tuesday night, mid 40s Wednesday night, upper 30s Thursday night. Much cooler through the Cascades and Olympics.
  • Sky Cover: Partly cloudy Monday night, mostly cloudy Tuesday, mostly cloudy Tuesday night, cloudy Wednesday, cloudy Wednesday night, mostly cloudy Thursday, mostly cloudy Thursday night, partly sunny Friday. Patchy fog at times during the overnight/morning.

Weekend
  • Wind: W/SW and light yet variable. Becoming breezy at times during the day.
  • Precipitation: Light to moderate rain showers to move in from the W/SW Saturday and remain for the weekend.
  • High Temps: Low 60s Saturday, upper 50s Sunday. Much cooler through the Cascades and Olympics.
  • Low Temps: Mid 40s Friday night, low 40s Saturday night, low 40s Sunday night. Much cooler through the Cascades and Olympics.
  • Sky Cover: Mostly cloudy to cloudy.

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