AgWeatherNet Weekly Weather Outlook for June 22 to 28, 2013

Warmer This Weekend; Wet in Western Areas Early Next Week

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

Warmer and drier weather will reappear on Saturday, as a weak ridge of high pressure moves into the region. By Sunday, however, an approaching weather system will spread rain into western Washington. Southerly flow will allow the warm-up to continue around Pullman and Spokane into Sunday, while increasing clouds promote slight cooling in western areas. High temperatures this weekend will generally be in the 70s in the west, with lows in the upper 40s to 50s. In the east, highs will be in the 70s to mid 80s on Saturday, and mid 70s to mid 80s on Sunday, as low temperatures warm from the mid 40s to mid 50s on Saturday morning to the mid 50s to mid 60s by Monday morning.

A strong southwesterly jet stream on the east side of another large upper low in the Pacific will send several disturbances through Washington early next week. Rain is likely on Monday and Tuesday in western and mountainous areas of Washington. While the wet weather will put a damper on high temperatures in western areas, low temperatures should be fairly mild. Eastern areas will also have a chance of rain early in the week. If clouds and rain are more prevalent, slightly below average high temperatures would occur, while drier weather would cause warm days in the upper 70s and 80s. It is important to note, however, that the progression of next week will be very different than the past couple of weeks. Although the large upper low off the coast early this past week ultimately moved inland, next week's storm will remain out over the ocean, and then retrograde to the west later in the week. Therefore, chilly temperatures will never reach the Northwest. As the low retreats later next week, high pressure will build in from the southeast. Until then, high temperatures are expected to be in the mid 60s to low 70s in the west for early to mid week, before warming into the 70s by Friday. In eastern areas around Pullman and Spokane, highs should be in the 70s early, and then 80s later in the week. Central areas will begin in the mid 70s to mid 80s early, before warming into the 80s and 90s by Friday. Low temperatures should be in the 50s and 60s. The hottest weather of 2013 is possible by next weekend, although that remains uncertain at this time.

Temperatures
  • Near average this weekend.
  • Cooler days, especially in western areas early next week.
  • Potentially significant warming later in the week.

Rainfall
  • Mostly dry on Saturday.
  • Rain developing in western areas later on Sunday.
  • Rain in western areas early next week.
  • A chance of rain at times east of the Cascades early next week.
  • Drier later in the week.

Wind
  • Mainly light this weekend.
  • Possibly breezy at times early next week.
  • Calmer later in the week.

8 to 14 Day Outlook - June 29 to July 5
  • Overall, above average temperatures and below average rainfall are expected during the 8 to 14 day period.

Important Points about Next Week's Weather

South Central Washington
  • Normal conditions for this time of the year would be highs in the mid 80s and lows in the low to mid 50s.
Weekend
  • Mostly sunny on Saturday. Partly cloudy on Sunday.
  • Highs in the low to mid 80s.
  • Lows in the mid 40s to mid 50s on Saturday morning, and 50s on Sunday morning.
Next Week
  • A chance of showers at times early in the week.
  • Highs warming from the mid 70s to mid 80s early to the upper 80s to 90s by later in the week.
  • Lows in the mid 50s to mid 60s.

North Central Washington
  • Normal conditions for this time of the year would be highs in the low 80s and lows in the mid 50s.
Weekend
  • Mostly dry on Saturday, with a slight chance of showers by Sunday night.
  • Highs in the upper 70s to low 80s.
  • Lows in the mid 40s to mid 50s on Saturday morning, and upper 40s to 50s on Sunday morning.
Next Week
  • A chance of rain at times early in the week.
  • Highs warming from the mid 70s to low 80s early to the mid 80s to mid 90s by Friday.
  • Lows in the mid 50s to mid 60s.

Eastern Washington
  • Normal conditions for this time of the year would be highs in the upper 70s and lows in the low 50s.
Weekend
  • Mostly dry.
  • Highs in the low to mid 70s on Saturday, and mid 70s to low 80s on Sunday.
  • Lows in the 40s on Saturday morning, and mid 40s to mid 50s on Sunday morning.
Next Week
  • Rain likely at times early in the week. Drier later in the week.
  • Highs warming from the 70s early to the mid 80s to mid 90s by later in the week.
  • Lows in the upper 40s to 50s.

Western Washington
  • Normal conditions for this time of the year would be highs in the low to mid 70s (except upper 60s at the coast) and lows in the low to mid 50s.
Weekend
  • Mostly dry on Saturday. A chance of rain later on Sunday.
  • Highs in the 70s, except mid to upper 60s at the coast.
  • Lows in the upper 40s to mid 50s on Saturday morning, and low to mid 50s on Sunday morning.
Next Week
  • Rain likely early, with a chance of showers at times through mid to late week.
  • Highs in the mid 60s to low 70s early, and warming into the 70s to low 80s later in the week.
  • Lows in the 50s.

Washington State University