AgWeatherNet Weekly Weather Outlook for November 23 to 29, 2013

Dry and Uneventful Weather Through the Middle of Next Week

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

High pressure will continue to dominate the weather through the middle of next week. As a result, dry and benign conditions are expected statewide. Despite very warm air aloft, the lack of mixing means that it will be difficult to realize the full extent of the warming at the surface. Overall, temperatures will be near average during the day, with warming conditions this weekend in the mountains and at the coast. However, nights will be very chilly at first, thanks to the very dry air mass. Several wild cards include the extent of fog and also decreasing air quality. Although the atmosphere will be stable and somewhat stagnant in the lowlands, the dry air will likely mean that only patchy fog and low clouds will occur.

It also appears that there will be some offshore flow in western Washington this weekend. Any areas that are able to mix out of the inversion could be quite warm, with low 60s possible at the coast, and on any low to mid elevation slopes west of the Cascades. Next week, temperatures will continue to moderate, especially at night and in the east, while some coastal and mountain areas could see cooler days later in the week. A weak disturbance may break through the ridge later next week, and bring an increasing chance of light rain to western areas. However, any potential system should give way to a rebuilding ridge of high pressure by week's end. Somewhat more active weather may return for early December, but wet weather is unlikely through this outlook period.

Temperatures
  • Near average during the day, and warmest in the mountains and at the coast.
  • Below average at night, especially at low elevations this weekend.
  • Milder early next week.
  • Cooler days at the coast by mid next week.

Rainfall
  • Dry through the middle of next week.
  • Light rain possible at times in western areas later next week, but mostly dry.

Wind
  • Generally light this weekend, except breezy near the coast and in parts of western Washington.
  • Possibly increasing slightly later next week.

Frost Risk Summary
  • This weekend: High risk.
  • Next week: High risk early, and decreasing later in the week.

8 to 14 Day Outlook - November 30 to December 6
  • Overall, above average temperatures and near average rainfall 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 mid 40s and lows in the upper 20s to low 30s.
Weekend
  • Mostly sunny, with patchy night and morning fog.
  • Highs in the mid 30s to mid 40s on Saturday, and upper 30s to mid 40s on Sunday.
  • Lows in the teens on Saturday morning, and mid teens to low 20s on Sunday morning.
Next Week
  • Mostly dry.
  • Highs in the upper 30s to 40s on Monday, and then 40s to around 50.
  • Lows in the upper teens to 20s on Monday morning, and then mid 20s to 30s.

North Central 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.
Weekend
  • Mostly sunny, with patchy night and morning fog.
  • Highs in the 30s on Saturday, and mid 30s to low 40s on Sunday.
  • Lows in the teens on Saturday morning, and mid teens to mid 20s on Sunday morning.
Next Week
  • Mostly dry.
  • Highs in the upper 30s to mid 40s on Monday, and then 40s.
  • Lows in the 20s on Monday morning, and then mid 20s to 30s.

Eastern Washington
  • Normal conditions for this time of the year would be highs in the upper 30s to low 40s and lows in the upper 20s to around 30.
Weekend
  • Mostly sunny, with patchy night and morning fog.
  • Highs in the mid 30s to low 40s on Saturday, and upper 30s to mid 40s on Sunday.
  • Lows in the teens to low 20s on Saturday morning, and upper teens to mid 20s on Sunday morning.
Next Week
  • Mostly dry, especially early in the week.
  • Highs in the low to mid 40s on Monday, and then 40s.
  • Lows in the 20s on Monday morning, and then mid 20s to mid 30s.

Western Washington
  • Normal conditions for this time of the year would be highs in the upper 40s to low 50s and lows in the upper 30s.
Weekend
  • Mostly sunny, with patchy night and morning fog.
  • Highs in the mid 40s to low 50s on Saturday, and upper 40s to mid 50s on Sunday, except 50s to around 60 at the coast.
  • Lows in the 20s to mid 30s on Saturday morning, and mid 20s to 30s on Sunday morning.
Next Week
  • Mostly dry early, with a chance of slight rain later in the week.
  • Highs in the upper 40s to mid 50s, and possibly cooler at the coast later in the week.
  • Lows in the upper 20s to 30s on Monday morning, and then 30s.

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