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June 27, 2024

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) strengthens again bringing more sunshine. The graphics for days 1-3  show no frontal systems moving through Oregon. The graphics for days 3-7    Sunday through Thursday show a frontal system will be moving through Oregon next Tuesday.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Mostly clear tonight,
  • Sunny and a bit warmer Friday, mostly clear Friday night,
  • A mix of clouds and sun Saturday, mostly cloudy in the evening, partly cloudy late at night,
  • Mostly sunny Sunday, then mostly clear Sunday night.
  • lows 49-54 cooling to 52 Sunday night highs near 82.
  • Mostly sunny Monday, clear Monday night,
  • Sunny Tuesday, clear at night.
  • Then sunny and a bit warmer Wednesday and Thursday (Independence Day), clear Thursday night,
  • highs 82-88 lows near 50. (seasonal averages high 78 low 50)

Forecast for the Umpqua Valley including Roseburg:

  • Mostly clear this evening, partly cloudy late tonight,
  • Patchy AM clouds, sunny and a bit warmer Friday afternoon, mostly clear Friday night,
  • Partly cloudy and a bit cooler Saturday, mostly clear at night,
  • A clouds, sunny and a bit cooler Sunday afternoon, then mostly clear Sunday night.
  • lows 53-58 cooling to 54 Sunday night highs 84-82.
  • Mostly sunny and a bit cooler Monday, clear Monday night,
  • Sunny and a bit warmer Tuesday, clear at night,
  • Sunny and a bit warmer Wednesday,clear Wednesday night,
  • Then sunny and a bit warmer Thursday (Independence Day).
  •  highs 84-87 lows near 54. (seasonal average high 81 low 55)

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

  • Mostly clear this evening, becoming mostly cloudy with patchy coastal fog late tonight while areas of inland fog late tonight,
  • Some AM clouds with patchy AM coastal fog while areas of inland AM fog, sunny and a bit warmer Friday afternoon, clear in the evening, partly cloudy with patchy coastal fog late Friday night while areas of inland fog late Friday night,
  • Mostly cloudy with areas of AM coastal fog while patchy inland fog, partly cloudy and å bit warmer Saturday afternoon, partly cloudy with patchy evening coastal fog, mostly cloudy with areas of coastal fog late at night,
  • Mostly cloudy with areas of AM fog, sunny and a bit warmer Sunday afternoon, then partly cloudy Sunday night
  • lows 52-56 cooling to 53 Sunday night highs 69-72.
  • Party cloudy and a bit cooler Monday, mostly clear with patchy fog Monday night,
  • Patchy AM fog, mostly sunny and a bit cooler Tuesday, mostly clear at night,
  • Mostly sunny Wednesday, mostly clear Wednesday night,
  • Then sunny Thursday (Independence Day).
  • highs 70-68 lows near 49. (seasonal average high 65 low 52)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Mostly clear tonight,
  • Sunny and warmer Friday, mostly clear Friday night,
  • Mostly sunny and a bit cooler Saturday, mostly cloudy with a slight (20%) chance of evening showers, mostly clear with a slight (20%) chance of showers late at night,
  • Mostly sunny with a slight (20%) chance of showers Sunday, mostly clear with a slight (20%) chance of evening showers, then partly cloudy with a slight (20%) chance of showers late Sunday night.
  • free air freezing level 12,000 ft. tonight, 13,000 ft. Friday and Friday night, 12,000 ft. Saturday, snow level above 8,000 ft. Saturday through Sunday night.
  • lows 39-44 cooling to 42 Saturday night and Sunday night highs 70-66.
  • Sunny and a bit warmer Monday, mostly clear Monday night,
  • Then sunny and a bit warmer Tuesday, Wednesday, and Thursday (Independence Day), clear Tuesday night and Wednesday night.
  • free air freezing level 14,000 ft. Monday, 15,000 ft. Monday night and Tuesday, 16,000 ft. Tuesday night and Wednesday, then 17,000 ft. Wednesday night and Thursday.
  • highs 67-79 lows 42-46.