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June 13, 2023

Note: Weather is a constantly changing phenomenon and weather forecasting is a combination of science, experience, and intuition. The accuracy of any given forecast can chance due to unexpected changes in atmospheric conditions, so there are no guarantees the the actual weather will conform to the projected forecast.

ADVISORIES

  • NONE AT THIS TIME.

HEALTH ADVISORIES

  • A PERMANENT HEALTH ADVISORY REMAINS IN EFFECT FOR THE SOUTH UMPQUA RIVER BAR. POOLS IN THE BEDROCK ALONG THE RIVERS EDGE ARE KNOWN TO DEVELOP BLUE-GREEN ALGAE (CYANOBACTERIAL) BLOOMS THAT CAN BE HARMFUL TO PETS AND PEOPLE IF ACCIDENTAL INGESTION OCCURS. SIGNS HAVE BEEN POSTED ALONG SEVERAL ACCESS AREAS ALONG THE  RIVER.

THE WEATHER PATTERN

An Upper Level High Pressure Ridge (“Arch” shape)  will keep temperatures at or a bit above normal. The graphics for days 1-3  show a dry cold front pushing through the Pacific Northwest today. The graphics for days 3-7   Friday through Tuesday show a frontal system moving through the Pacific Northwest Saturday into Sunday.

ADVISORIES

  • NONE AT THIS TIME.

HEALTH ADVISORIES

  • A PERMANENT HEALTH ADVISORY REMAINS IN EFFECT FOR THE SOUTH UMPQUA RIVER BAR. POOLS IN THE BEDROCK ALONG THE RIVERS EDGE ARE KNOWN TO DEVELOP BLUE-GREEN ALGAE (CYANOBACTERIAL) BLOOMS THAT CAN BE HARMFUL TO PETS AND PEOPLE IF ACCIDENTAL INGESTION OCCURS. SIGNS HAVE BEEN POSTED ALONG SEVERAL ACCESS AREAS ALONG THE  RIVER.

THE WEATHER PATTERN

An Upper Level High Pressure Ridge (“Arch” shape)  will keep temperatures at or a bit above normal. The graphics for days 1-3  show a dry cold front pushing through the Pacific Northwest Tuesday. The graphics for days 3-7   Thursday through Monday show a frontal system moving through the Pacific Northwest Saturday into next Sunday.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Partly cloudy and cooler today, mostly clear tonight,
  • Partly cloudy and a bit cooler Wednesday, mostly clear at night,
  • AM sun, partly cloudy and a bit warmer Thursday afternoon, then partly cloudy Thursday night.
  • highs 78-72 warming to 76 Thursday low 44-49.
  • Partly cloudy and a bit warmer Friday, partly cloudy with a slight (20%) chance of rain late Friday night night,
  • Clouds and sun with a slight (20%) chance of AM rain, a mix of clouds and sun and a bit cooler Saturday afternoon, partly cloudy at night,
  • A mix of clouds and sun and a bit cooler with a slight (20%) chance of rain Sunday, partly cloudy with a slight (20%) chance of rain Sunday night,
  • Clouds and sun with a slight (20%) chance of AM rain, then a mix of clouds and sun with a (40%) chance of rain Monday afternoon (Juneteenth).
  • highs 82-66 lows 53-45.  (seasonal averages high 73 low 47)

Forecast for the Umpqua Valley including Roseburg:

  • Mostly cloudy and cooler today, partly cloudy tonight,
  • Some AM clouds, sunny and a bit cooler Wednesday afternoon, mostly clear at night,
  • Sunny and a bit warmer Thursday, then partly cloudy Thursday night.
  • highs 80-76 warming to 82 Thursday low 50-48 warming to 54 Thursday night.
  • Some AM clouds, sunny and a bit warmer Friday afternoon, partly cloudy Friday night,
  • Partly cloudy and a bit cooler Saturday, partly cloudy at night,
  • Mostly cloudy start, partly cloudy with a slight (20%) chance of showers and a bit cooler Sunday afternoon, partly cloudy Sunday night,
  • Partly cloudy and a bit cooler with a slight (20%) chance of rain Monday (Juneteenth).
  • highs 86-69  lows 57-48.  (seasonal averages high 76 low 52)

Forecast for the Oregon Coast including Coos Bay and North Bend:

  • Cloudy with patchy AM coastal fog while areas of inland AM fog, cloudy this afternoon, mostly cloudy with patchy inland fog late tonight,
  • Partly cloudy with patchy AM coastal fog, partly cloudy and a bit warmer Wednesday afternoon, mostly clear at night,
  • AM sun, partly cloudy and a bit warmer Thursday, then partly cloudy Thursday night.
  • highs 68-65 lows 47-49.
  • Partly cloudy and a bit warmer Friday, mostly cloudy Friday night,
  • Mostly cloudy and a bit cooler Saturday, partly cloudy at night,
  • Mostly cloudy and a bit cooler with a slight (20%) chance of rain Sunday, partly cloudy in the evening, mostly cloudy late Sunday night,
  • Then partly cloudy with a slight (20%) chance of rain Monday (Juneteenth) .
  • highs 66-68 cooling back to 66 Saturday and Sunday lows 48-52 cooling back to 48 Saturday night. (seasonal averages high 63 low 51)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Partly cloudy and a bit cooler today, partly cloudy tonight,
  • Partly cloudy and cooler Wednesday, mostly clear Wednesday night,
  • AM sun, partly cloudy and a bit warmer Thursday afternoon, then partly cloudy Thursday night.
  • free air freezing level 14,000 ft.  today and tonight, 14,000 ft. Wednesday, then 13,000 ft. Wednesday night through Thursday night.
  • highs 72-62 lows 37-34 warming to 42 Thursday night.
  • Partly cloudy and a bit warmer Friday, partly cloudy with a slight (20%) chance of rain late Friday night,
  • Partly cloudy with a slight (20%) chance of rain and a bit cooler Saturday and at night,
  • Partly cloudy and cooler with a slight (20%) chance of rain Sunday, partly cloudy with a (40%) chance of rain and a slight (20%) chance of snow late Sunday night,
  • Partly cloudy with a (40%) chance of AM snow, then a mix of clouds and sun and a bit cooler with a (40%) chance of rain Monday afternoon.
  •  free air freezing level 14,000 ft. Friday, snow level above 8,000 ft. Friday night through Saturday night, 6,500 ft. Sunday, 6,000 ft. Sunday night, then 5,500 ft. Monday.
  • highs 68-58 lows 43-37.