AgWeatherNet Weekly Weather Outlook for July 28 to August 3, 2012

Seasonal Conditions This Weekend and Next Week

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

A dry southwesterly flow will provide uneventful weather this weekend and next week. Western Washington will experience typical periods of night and morning clouds, with clearing during the day-time. Widespread low clouds are most likely at the coast. Despite a warm air mass, highs in western Washington will be tempered by a marine influence due to periodic onshore flow. Eastern Washington will be mostly sunny and dry, except for the occasional threat of an isolated thunderstorm over the mountains. The trend of cool weather at the coast and warm to hot weather in eastern Washington will continue, as a trough lingers over the eastern Pacific while a ridge persists over the west central United States. Highs will mainly be in the mid 80s to mid 90s in eastern Washington, and in the 70s in western Washington. Low temperatures will be mostly in the 50s to around 60. The air mass this weekend and next week will continue to be relatively dry, as comfortable low temperatures continue in central and eastern Washington. Dew point temperatures east of the Cascades will be mostly in the 40s. Neither extreme heat nor cool weather is expected during the period. Despite sunny, hot days east of the Cascades, dry air and clear skies will allow night-time readings to recover to comfortable levels. There is a chance that a weather system will affect the area next Thursday or Friday, although the details are uncertain. The system could bring breezy and slightly cooler weather to areas east of the Cascades, along with clouds and a chance of showers to western Washington.

Temperatures
  • Generally near normal.
  • Slightly below normal in western Washington.
  • Slightly above normal in eastern Washington.
  • Generally warmest from Sunday to Wednesday in eastern Washington.

Rainfall
  • Mostly dry through the period.

Wind
  • Generally light.
  • Occasionally moderate in central Washington.

Climate Note: The normal temperatures shown below are unchanged from last week's outlook, having leveled off in the mid 80s to around 90 in eastern Washington. This indicates that the average temperatures have reached their climatological peak for the year. During August, many locations will begin to see the slow, inexorable decline of average temperatures that will continue through December.

Important Points about Next Week's Weather

South Central Washington
  • Normal conditions for this time of the year would be highs in the upper 80s to around 90 and lows in the 50s to around 60.
Weekend
  • Mostly sunny and dry.
  • Highs in the upper 80s to low 90s.
  • Lows in the 50s to low 60s.
Next Week
  • Mostly sunny and dry.
  • Highs in the mid 80s to mid 90s.
  • Lows in the 50s to mid 60s.

North Central Washington
  • Normal conditions for this time of the year would be highs in the mid to upper 80s and lows in the upper 50s.
Weekend
  • Mostly sunny and dry.
  • Highs in the upper 80s to low 90s.
  • Lows in the mid 50s to low 60s.
Next Week
  • Mostly sunny and dry.
  • Highs in the mid 80s to mid 90s.
  • Lows in the mid 50s to mid 60s.

Eastern Washington
  • Normal conditions for this time of the year would be highs in the mid 80s and lows in the low 50s.
Weekend
  • Mostly sunny and dry.
  • Highs in the 80s.
  • Lows in the upper 40s to 50s.
Next Week
  • Mostly sunny and dry.
  • Highs in the 80s.
  • Lows in the upper 40s to 50s.

Western Washington
  • Normal conditions for this time of the year would be highs in the 70s to around 80 (except upper 60s to around 70 at the coast) and lows in the 50s.
Weekend
  • Dry and partly sunny in the day. Night and morning low clouds.
  • Highs in the upper 60s to 70s, except 60s at the coast.
  • Lows in the low to mid 50s.
Next Week
  • Mostly dry. Mostly sunny in the day, with night and morning low clouds possible at times.
  • Highs in the 70s to low 80s, except 60s at the coast.
  • Lows in the low to mid 50s.
Washington State University