AgWeatherNet Weekly Weather Outlook Monday Update for Apr 13 to Apr 19, 2020

Cool nights Wednesday and Thursday followed by a warm weekend

Craig Oswald, Field Meteorologist, 509-786-9256

Discussion:

Temperatures look to continue to warm early in the week with a passing upper level disturbance still planning to make its way through Washington Tuesday night and Wednesday. This disturbance looks to bring scattered showers and slightly cooler temperatures. Scattered showers can be expected to start moving in from the north/northeast late Tuesday night. The areas that look to be most affected by any shower activity are upland and mountain areas of northern Washington, the Cascades, along the Idaho border, and to a lesser extent, parts of western Washington. Most elsewhere will likely remain dry. Snow levels look to drop to around 3500ft in northern Washington and near 4500ft through the Cascades during Tuesday night. Snow levels will raise during the day with any daytime snow showers reserved for high mountain locations only. Any accumulation is anticipated to be quite light. Rain showers look to remain scattered during the day Wednesday and conditions are expected to trend dry statewide through the overnight.

Tonight (Monday) will likely require frost protection for fruit trees in some locales, as temperatures in the coldest spots through north-central and south-central Washington will likely drop colder than what is anticipated in the general forecast below. Upper 20s are possible in the typical cold locations. Tuesday looks to be much warmer statewide with protections for fruit trees likely not necessary. As the afore mentioned disturbance makes its way through the state beginning late Tuesday night, it is anticipated to bring cooler and much drier air back into eastern Washington. Temperatures don't look to drop as cold as they did this past weekend, however, some protections for perennial fruit crops will still likely be necessary for the typical cold areas Wednesday and Thursday nights before warming as we move into the weekend. Dew points look to drop into the mid-teens to low 20s in eastern Washington from Wednesday through Friday as well.

The weekend is expected to see warmer temperatures and some scattered rain showers are also expected throughout the state on Saturday. Protections for tree fruit crops aren't likely to be needed over the weekend and the extent and timing of any showers will be discussed more in depth in Friday's outlook.


Important Points about Next Week's Weather

South Central Washington
Remainder of the Week
  • Wind: Light and variable winds increasing Wednesday and becoming mostly W/NW and turning NE in the evening. A few gusts near 35mph possible through the Basin. Trending back to light and variable Thursday night.
  • Precipitation: Dry conditions expected.
  • High Temps: Upper 60s Tuesday, mid 60s Wednesday, upper 60s Thursday, mid 70s Friday.
  • Low Temps: Mid 30s Monday night, low 40s Tuesday night, upper 30s Wednesday night, mid 30s Thursday night.
  • Sky Cover: Mostly clear Monday night, mostly sunny Tuesday, partly cloudy Tuesday night, partly cloudy Wednesday, partly cloudy Wednesday night, sunny Thursday, mostly clear Thursday night, sunny Friday.

Weekend
  • Wind: Light and variable. Increasing and becoming SW Friday evening. Returning to light and variable Saturday night.
  • Precipitation: Chance for a few scattered rain showers Saturday night, otherwise dry.
  • High Temps: Low 70s Saturday, mid 70s Sunday.
  • Low Temps: Low 40s Friday night, low 40s Saturday night, mid 40s Sunday night.
  • Sky Cover: Mostly sunny to mostly cloudy.

North Central Washington
Remainder of the Week
  • Wind: Light and variable winds increasing Wednesday and becoming mostly W/NW and turning NE in the evening. A few gusts near 35mph possible through the Basin and north-south valleys. Trending back to light and variable Thursday night.
  • Precipitation: Dry conditions expected aside from a chance for a few scattered upland and mountain rain/snow showers late Tuesday night and through Wednesday. Little to no accumulation expected under any snow shower activity. Conditions to trend dry Wednesday night.
  • High Temps: Upper 60s Tuesday, mid 60s Wednesday, mid 60s Thursday, upper 60s Friday. Cooler through higher terrain.
  • Low Temps: Mid 30s Monday night, low 40s Tuesday night, mid 30s Wednesday night, upper 30s Thursday night. Cooler through higher terrain.
  • Sky Cover: Partly cloudy Monday night, partly sunny Tuesday, mostly cloudy Tuesday night, sunny Wednesday, mostly clear Wednesday night, sunny Thursday, mostly clear Thursday night, mostly sunny Friday.

Weekend
  • Wind: Light and variable. Increasing and becoming SW Friday evening. Returning to light and variable Saturday night.
  • Precipitation: Chance for scattered rain showers and upland/mountain snow showers starting Saturday morning and tapering off through Saturday night. Greater activity expected through higher terrain, otherwise dry.
  • High Temps: Low 60s Saturday, upper 60s Sunday. Cooler through higher terrain.
  • Low Temps: Low 40s Friday night, low 40s Saturday night, low 40s Sunday night. Cooler through higher terrain.
  • Sky Cover: Mostly sunny to mostly cloudy.

Eastern Washington
Remainder of the Week
  • Wind: Light and variable winds increasing Wednesday and becoming mostly W/NW and turning NE in the evening. A few gusts near 35mph possible through the Basin/Palouse. Trending back to light and variable Thursday night.
  • Precipitation: Dry conditions expected aside from a chance for a few scattered rain showers late Tuesday night and through Wednesday. Greater chance for activity near the Idaho border. Conditions to trend dry Wednesday night.
  • High Temps: Upper 50s Tuesday, mid 50s Wednesday, mid 50s Thursday, low 60s Friday.
  • Low Temps: Low 30s Monday night, upper 30s Tuesday night, low 30s Wednesday night, near 30 Thursday night.
  • Sky Cover: Partly cloudy Monday night, mostly cloudy Tuesday, mostly cloudy Tuesday night, partly sunny Wednesday, partly cloudy Wednesday night, sunny Thursday, mostly clear Thursday night, sunny Friday.

Weekend
  • Wind: Light and variable. Increasing and becoming SW Friday evening. Returning to light and variable Saturday night.
  • Precipitation: Chance for a few scattered rain showers Saturday night, otherwise dry.
  • High Temps: Upper 50s Saturday, upper 50s Sunday.
  • Low Temps: Upper 30s Friday night, mid 30s Saturday night, upper 30s Sunday night.
  • Sky Cover: Mostly sunny to mostly cloudy

Western Washington
Remainder of the Week
  • Wind: Light and variable. A bit breezier near Puget sound and the coast at times.
  • Precipitation: Dry conditions expected aside from a chance for a few scattered rain showers and high mountain snow showers late Tuesday night and through Wednesday. Greater chance for activity in the mountains and southern half of the region. Snow levels lowering to near 4500ft during the overnights. Conditions to trend dry Wednesday night.
  • High Temps: Low 60s Tuesday, mid 60s Wednesday, near 70 Thursday, upper 60s Friday. Much cooler through the Cascades and Olympics.
  • Low Temps: Low 30s Monday night, low 40s Tuesday night, mid 30s Wednesday night, upper 30s Thursday night. Much cooler through the Cascades and Olympics.
  • Sky Cover: Mostly clear Monday night, sunny Tuesday, mostly cloudy Tuesday night, partly sunny Wednesday, mostly clear Wednesday night, sunny Thursday, mostly clear Thursday night, sunny Friday.

Weekend
  • Wind: Slightly increasing and becoming generally W Friday evening, especially near Puget sound and the coast. Returning to light and variable Saturday night.
  • Precipitation: Scattered rain showers and high mountain snow showers expected starting Saturday morning and tapering off through Saturday night. Snow levels likely to remain above pass levels.
  • High Temps: Low 60s Saturday, mid 60s Sunday. Much cooler through the Cascades and Olympics.
  • Low Temps: Low 40s Friday night, low 40s Saturday night, low 40s Sunday night. Much cooler through the Cascades and Olympics.
  • Sky Cover: Partly sunny to mostly cloudy.

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