AgWeatherNet Weekly Weather Outlook for January 26 to February 1, 2013

Unsettled This Weekend; High Pressure Rebuilds Later Next Week

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

As a weather system departs on Saturday, a trough of low pressure will move across Washington over the weekend. Rain or showers are likely in western Washington, and there will be a chance of rain or snow in eastern Washington. While there will be a lingering chance of rain in western Washington early next week, and a slight chance of snow or rain east of the Cascades, high pressure will become re-established across the state by mid next week. This could mean a repeat of the mid January pattern, featuring drier weather for the state, and warming conditions across the mountains. However, lowland areas, especially in central Washington, may see the return of a stagnant inversion layer by later next week. The result will be decreasing air quality, and possible low cloud re-development.

Temperatures
  • Seasonally cool this weekend.
  • Becoming milder in the mountains and possibly at the coast by mid next week.
  • Remaining similar in the lowlands through next week.

Rainfall
  • Rain or showers likely in western Washington this weekend.
  • A chance of rain or snow in eastern Washington, but partly sunny in central Washington.
  • A lingering chance for rain in western Washington, and a slight chance of rain or snow east of the Cascades early next week.
  • Becoming mostly dry statewide later next week.

Wind
  • Breezy areas this weekend.
  • Becoming light by mid next week.

Frost Risk Summary
  • This weekend and next week: High risk in eastern Washington and moderate risk in western Washington.

8 to 14 Day Outlook - February 2 to February 8
  • High pressure will cause generally dry and stable conditions across Washington in early February. While the mountains and possibly the coast will see mostly sunny skies and above normal temperatures, the lowlands, especially in central Washington, will see low clouds, stagnant conditions, and chilly temperatures.

Important Points about Next Week's Weather

South Central Washington
  • Normal conditions for this time of the year would be highs in the low to mid 40s and lows in the upper 20s to around 30.
Weekend
  • Partly sunny, with a slight chance of rain or snow.
  • Highs in the mid 30s to mid 40s.
  • Lows in the mid 20s to mid 30s.
Next Week
  • Mostly dry. A slight chance of rain or snow early in the week, and then low clouds and fog developing.
  • Air stagnation possible later in the week.
  • Highs in the mid 30s to mid 40s.
  • Lows in the mid 20s to mid 30s.

North Central 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
  • A chance of snow or rain.
  • Highs in the 30s.
  • Lows in the 20s.
Next Week
  • A slight chance of snow early in the week.
  • Highs in the 30s.
  • Lows in the 20s.

Eastern Washington
  • Normal conditions for this time of the year would be highs in the upper 30s to around 40 and lows in the upper 20s to around 30.
Weekend
  • Snow or rain likely on Saturday, and a chance of snow on Sunday.
  • Highs in the mid to upper 30s.
  • Lows in the mid 20s to low 30s.
Next Week
  • Snow or rain likely on Monday, and then becoming drier later in the week.
  • Highs in the mid to upper 30s.
  • Lows in the 20s.

Western Washington
  • Normal conditions for this time of the year would be highs around 50 and lows in the upper 30s to around 40.
Weekend
  • Rain or showers likely, especially on Saturday.
  • Snow showers in the mountains.
  • Highs in the mid to upper 40s.
  • Lows in the 30s.
Next Week
  • A chance of rain early in the week.
  • Partly sunny and warmer in the mountains later in the week.
  • Highs in the mid 40s to around 50.
  • Lows in the 30s to around 40.

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