AgWeatherNet Weekly Weather Outlook for January 21 to January 27, 2012

Continued Unsettled Conditions but Milder Weather in the Lowlands Next Week

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

A series of storm systems will affect the region every 24 to 36 hours for the next week. Milder westerly air flow will keep precipitation as rain in western Washington. Areas east of the Cascades will have chances for rain and snow at times, with rain most likely in the south and snow most likely in the north. Snow levels in the mountains will fluctuate, although snow will fall much of the time at and above pass level, with periods of heavy snow through early next week.

Snow will be tapering off in north central Washington on Saturday morning, and most areas east of the Cascades will be dry on Saturday. Conditions will be notably warmer in south central Washington, with temperatures rising into the low 50s in Walla Walla and the Tri-Cities. Following a mostly dry Sunday in central Washington, rain will likely return in the south and accumulating snow is possible in the north on Sunday night.

Around Tuesday or Wednesday of next week, a series of warmer storm systems may bring heavy rain from the Cascades westward, which could combine with snowmelt to produce flood concerns. Overall, temperatures will be warmer by the middle of next week with high snow levels for several days. While it remains highly uncertain, there is some indication that colder weather could return by next weekend, so stay tuned for updates as the situation evolves.


Important Points about Next Week's Weather

South Central Washington
  • Normal conditions for this time of year would be highs in the low 40s and lows in the 20s.
Weekend
  • A chance of rain or snow beginning Sunday evening, otherwise mostly dry.
  • Highs on Saturday ranging from the 40s to the mid 50s in the Walla Walla area.
  • Highs on Sunday in the upper 30s to 40s.
  • Lows in the upper 20s to 30s.
Next Week
  • A chance of rain at times, with a slight chance of snow early in the week, and becoming milder by mid week.
  • Highs trending from the upper 30s and 40s early in the week to the 40s and 50s by mid week.
  • Lows in the upper 20s and 30s.

North Central Washington
  • Normal conditions for this time of year would be highs in the mid 30s and lows in the upper teens to low 20s.
Weekend
  • Snow tapering off early Saturday morning, with mostly dry conditions through mid day Sunday. Snow likely by Sunday evening, with light to moderate accumulations possible overnight.
  • Highs in the 30s and lows in the 20s, and coldest north of Omak.
Next Week
  • A chance of snow or rain early in the week, and then a chance of rain at times.
  • Highs trending from the 30s early in the week to the upper 30s to mid 40s by mid week.
  • Lows in the 20s to mid 30s.

Eastern Washington
  • Normal conditions for this time of year would be highs in the mid to upper 30s and lows in the mid to upper 20s.
Weekend
  • Rain ending early Saturday, with a slight chance of rain or snow at times. Snow is likely by Sunday night, with light accumulations possible overnight.
  • Highs in the low 40s on Saturday and the upper 30s on Sunday.
  • Lows in the upper 20s to mid 30s.
Next Week
  • Rain or snow is likely at times early in the week, and then rain is likely at times by mid week.
  • Highs trending from the upper 30s early in the week to the 40s by mid week.
  • Lows trending from the upper 20s early in the week to the mid 30s by mid week.

Western Washington
  • Normal conditions for this time of year would be highs in the mid to upper 40s and lows in the mid to upper 30s.
Weekend
  • Breezy with showers on Saturday, and rain on Sunday.
  • Highs in the 40s to around 50 and lows from the mid 30s to mid 40s.
Next Week
  • Rain at times and breezy.
  • Highs trending from 45 to 50 early in the week to 50 to 55 by mid week.
  • Lows trending from the mid 30s to low 40s early in the week to 40 to 45 by mid week.

Washington State University