AgWeatherNet Weekly Weather Outlook for December 19 to December 25, 2015

Stormy Weather Continues Through Christmas Eve

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

The weather for the next seven days will hardly be typical of an El Niño winter, as a strong jet stream propels storm systems through Washington on an almost daily basis. While lowland temperatures should be somewhat variable and not particularly cold for December, the mountains are expected to receive copious amounts of much needed snowfall, as rain falls in western areas. Most of the state can expect breezy to perhaps windy conditions at times, while central and eastern Washington is likely to have periodic rain or snow. Specifically, Saturday should be a relative lull in the active conditions, before a garden variety storm arrives for Sunday morning. Stormy and milder weather is likely by early next week, with wind and western rainfall. A cooler and somewhat drier, but still unsettled pattern may take hold starting around Christmas Eve, although the details remain unresolved at present.

Despite the continued lack of bitter cold temperatures, next week will not be as mild as most of the first half of December. It is still a bit early to speculate about a potential White Christmas for folks east of the Cascades, but the odds are certainly higher than would be expected given the unfavorable climate indicators for this winter season. Unfortunately, the probability remains low for western Washington, but near 100% for the higher elevations. Please watch for the special Christmas outlook early next week, as we focus on the December 24/25 forecast while saying goodbye to a record warm 2015.

Temperatures
  • Slightly above normal overall, especially in central areas.
  • Cool on Saturday, and milder early next week.
  • Cooler by Christmas Day.

Precipitation
  • Rain at times in the west, and rain or snow at times east of the Cascades, especially from Sunday to Wednesday.

Wind
  • Breezy to windy at times, especially for the first half of next week.

Frost Risk Summary
  • This Weekend: Moderate to high risk.
  • Next Week: Moderate risk through mid week, and increasing risk later in the week.

8 to 14 Day Outlook - December 26, 2015 to January 1, 2016
  • Overall, near to 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 low 40s and lows in the mid 20s to around 30.
Weekend
  • A chance of rain or snow on Sunday morning.
  • Highs in the 30s on Saturday, and upper 30s to mid 40s on Sunday.
  • Lows in the 20s to around 30 on Saturday morning, and mid 20s to around 30 on Sunday morning.
Next Week
  • A chance of rain or snow at times.
  • Highs in the 40s to low 50s early, and cooler later in the week.
  • Lows in the mid 20s to 30s early, and cooler later in the week.

North Central Washington
  • Normal conditions for this time of the year would be highs in the mid 30s and lows in the low to mid 20s.
Weekend
  • A chance of snow or rain by Sunday morning.
  • Highs in the upper 20s to mid 30s on Saturday, and 30s to low 40s on Sunday.
  • Lows in the 20s on Saturday morning, and 20s to around 30 on Sunday morning.
Next Week
  • A chance of snow or rain at times.
  • Highs in the mid 30s to mid 40s early, and cooler later in the week.
  • Lows in the mid 20s to mid 30s early, and cooler later in the week.

Eastern Washington
  • Normal conditions for this time of the year would be highs in the upper 30s and lows in the mid to upper 20s.
Weekend
  • Rain or snow likely on Sunday.
  • Highs in the 30s on Saturday, and mid 30s to low 40s on Sunday.
  • Lows in the mid 20s to low 30s on Saturday morning, and mid to upper 20s on Sunday morning.
Next Week
  • Rain or snow likely at times, especially early in the week.
  • Highs in the upper 30s to mid 40s early, and cooler later in the week.
  • Lows in the mid 20s to mid 30s on Monday morning, and then warmer, and cooler later in the week.

Western Washington
  • Normal conditions for this time of the year would be highs in the mid 40s to around 50 and lows in the mid to upper 30s.
Weekend
  • A chance of rain later on Saturday.
  • Rain likely on Sunday.
  • Highs in the 40s on Saturday, and mid 40s to around 50 on Sunday.
  • Lows in the 30s to low 40s on Saturday morning, and upper 30s to mid 40s on Sunday morning.
Next Week
  • Rain at times, especially early in the week.
  • Highs in the mid 40s to low 50s early, and cooler later in the week.
  • Lows in the mid 30s to mid 40s early, and cooler later in the week.
Washington State University