AgWeatherNet Weekly Weather Outlook for April 26 to May 2, 2014

Isolated Frost on Saturday Morning; Warmest Temperatures of the Year Later Next Week

Nic Loyd, Meteorologist, 509-786-9357
Gerrit Hoogenboom, Director, 509-786-9371

Isolated frost is likely on Saturday morning in clear, cold areas of central and eastern Washington. However, some sunshine will allow for a pleasant temperature recovery by afternoon. Western Washington will see rain developing by the evening, as a storm approaches the coast. Wet weather overnight will eventually transition to showers on Sunday, as the storm moves off to the east. Eastern areas around Pullman and Spokane will also experience showers on Sunday. Even if central Washington misses out on most of the rain, Sunday promises to be another breezy spring day.

Depending upon how quickly the clouds and wind depart the region, Monday morning could be another cold period for parts of eastern Washington. Early next week will be a transition time for the Northwest, as a strong ridge of high pressure builds into the region. Although western areas will continue to have a chance of light rain as a weak front brushes the state, the clear trend will be toward warming and drying conditions. In fact, most areas should be entirely dry by Tuesday, as day-time highs rapidly increase. By the middle of next week, temperatures should be well above average under sunny skies. Widespread 70s are possible in western areas if offshore flow develops as expected. Eastern areas should be well into the 70s and 80s by next Thursday. The forecast for the end of the week and next weekend is very uncertain. The most likely scenario is that the heat will slowly subside from west to east, though temperatures should generally remain above normal into the foreseeable future. Still, at this time of the year, hot weather of this magnitude rarely lasts for more than a few days.

Temperatures
  • Remaining below average this weekend.
  • Much warmer by the latter half of next week.
  • Possibly cooler in the west later next week.

Precipitation
  • Rain developing in the west later on Saturday, otherwise mainly dry.
  • Showers in the west on Sunday, and a chance of showers in the east.
  • A chance of rain in the west on Monday, but mainly dry.
  • Mainly dry statewide beginning on Tuesday.

Wind
  • Breezy at times through early next week, and especially on Sunday.
  • Becoming fairly light by the middle of next week.

Frost Risk Summary
  • This weekend: Moderate to high in the east on Saturday morning, and low to moderate on Sunday morning.
  • Early Next week: Moderate to high in the east on Monday morning, and low to moderate on Tuesday morning.
  • Later Next Week: Low.

8 to 14 Day Outlook - May 3 to May 9
  • Overall, above average temperatures and near average precipitation are expected during the 8 to 14 day time frame.

Important Points about Next Week's Weather

South Central Washington
  • Normal conditions for this time of the year would be highs in the upper 60s to low 70s and lows in the upper 30s to mid 40s.
Weekend
  • Mostly dry and breezy. A slight chance of showers on Sunday morning.
  • Highs in the upper 50s to mid 60s.
  • Lows in the 30s to low 40s on Saturday morning, and mid 30s to mid 40s on Sunday morning.
Next Week
  • Becoming mostly sunny by mid week.
  • Highs in the 60s on Monday.
  • Highs warming into the upper 70s to mid 80s by mid to late week.
  • Lows in the 30s to mid 40s early, and then 40s to low 50s later in the week.

North Central Washington
  • Normal conditions for this time of the year would be highs in the upper 60s and lows in the low 40s.
Weekend
  • A chance of showers, especially on Sunday.
  • Highs in the mid 50s to mid 60s.
  • Lows in the 30s to low 40s on Saturday morning, and mid 30s to mid 40s on Sunday morning.
Next Week
  • Becoming mostly sunny by mid week.
  • Highs in the upper 50s to mid 60s on Monday.
  • Highs warming into the mid 70s to low 80s by mid to late week.
  • Lows in the 30s to mid 40s early, and then 40s to low 50s later in the week.

Eastern Washington
  • Normal conditions for this time of the year would be highs in the low to mid 60s and lows in the upper 30s to low 40s.
Weekend
  • A slight chance of showers on Saturday. Rain developing on Sunday morning, with showers and breezes in the afternoon.
  • Highs in the mid to upper 50s on Saturday, and 50s on Sunday.
  • Lows in the mid to upper 30s on Saturday morning, and 30s on Sunday morning.
Next Week
  • A slight chance of rain on Monday, but mainly dry.
  • Becoming mostly sunny by mid week.
  • Highs in the mid to upper 50s on Monday.
  • Highs warming into the upper 60s to mid 70s by mid to late week.
  • Lows in the 30s early, and then 40s later in the week.

Western Washington
  • Normal conditions for this time of the year would be highs in the low to mid 60s and lows in the low to mid 40s.
Weekend
  • Rain developing later on Saturday.
  • Showers on Sunday.
  • Highs in the mid to upper 50s on Saturday, and 50s on Sunday.
  • Lows in the upper 30s to mid 40s on Saturday morning, and low to mid 40s on Sunday morning.
Next Week
  • A chance of rain on Monday.
  • Mostly dry beginning on Tuesday.
  • Highs in the mid 50s to around 60 on Monday.
  • Highs warming into the upper 60s to 70s by mid week, and possibly cooler later in the week.
  • Lows in the upper 30s to mid 40s early, and then 40s to low 50s later in the week.

Washington State University