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June 9, 2022

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.
  • A PERMANENT RECREATIONAL HEALTH ADVISORY IS IN EFFECT FOR THE SOUTH UMPQUA RIVER AND MAINSTEM UMPQUA RIVER. THE ADVISORY COVERS THE SOUTH UMPQUA RIVER FROM CANYONVILLE DOWNSTREAM TO THE CONFLUENCE OF THE MAINSTEM UMPQUA RIVER, AND THE MAINSTEM UMPQUA RIVER DOWNSTREAM PAST ELKTON TO LAWSON BAR. PEOPLE IN THE BEDROCK ALONG THE RIVERS EDGE ARE ARE KNOWN TO DEVELOP CYANOBACTERIA (BLUE-GREEN ALGAE) BLOOMS THAT CAN BE HARMFUL TO PETS AND PEOPLE IF ACCIDENTAL INGESTION OCCURS. SIGNS HAVE BEEN POSTED AT SEVERAL ACCESS AREAS ALONG THE RIVER.

THE WEATHER PATTERN

Upper Level High Pressure keeps us in sunshine for yet another day.  The graphics for days 1-3 show the complex frontal system that will move in between Thursday and Friday. The graphics for days 3-7   Sunday through Thursday show the next  frontal system will be off shore Wednesday then sliding through the Pacific Northwest next Thursday.

Forecast for the South Willamette Valley including Eugene-Springfield:

  • A mix of clouds and sun and a bit warmer with a slight (20%) chance of rain this afternoon, mostly cloudy with rain tonight (under 0.10 in. of rain possible),
  • Mostly cloudy with rain likely (70%) and a bit cooler Friday (under 0.10 in. of rain possible), rain at night (0.25 in. of rain possible),
  • Mostly cloudy with AM rain likely (70%), showers likely (70%) and a bit cooler Saturday afternoon, a good (50%) chance of evening showers, then showers likely (70%) late Saturday night.
  • highs 78-72 lows 62-54.
  • A mix of clouds and sun and a bit cooler with a good (50%) chance of showers Sunday, partly cloudy with a (40%) chance of evening showers, a slight (20%) chance of showers late Sunday night,
  • A mix of clouds and sun and a bit warmer with a (40%) chance of showers Monday, partly cloudy with a slight (20%) chance of evening showers, just partly cloudy late at night,
  • Partly cloudy and a bit warmer with a slight (20%) chance of showers Tuesday, just partly cloudy Tuesday night,
  • Then partly cloudy and a bit warmer with a slight (20%) chance of showers Wednesday.
  • highs 66-74 lows 47-45 warming to 48 Tuesday night. (Seasonal Averages high 72 low 47)

Forecast for the Umpqua Valley including Roseburg:

  • Partly cloudy and a bit warmer today, mostly cloudy with a (30%) chance of rain tonight,
  • Mostly cloudy and a bit cooler with a good (50%) chance of rain Friday and in the evening, rain likely (70%) late at night (under 0.10 in. of rain possible),
  • Mostly cloudy with AM rain likely (70%), showers likely (70%) and cooler Saturday afternoon, then a good (50%)  chance of showers Saturday night.
  • highs 85-74 lows 64-55.
  • Mostly cloudy with a good (50%) chance of showers and a bit cooler Sunday, partly cloudy with a slight (20%) chance of evening showers, just partly cloudy late Sunday night,
  • Partly cloudy with a slight (20%) chance of showers and a bit warmer Monday, becoming mostly clear at night,
  • Mostly sunny and a bit warmer Tuesday, mostly clear Tuesday night,
  • Then partly cloudy and a bit warmer Wednesday.
  • highs 64-76 lows near 48. (Seasonal Averages high 75 low 51).

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

  • Mostly cloudy and warmer with a slight (20%) chance of coastal rain this afternoon, coastal rain likely (70%) tonight while a (40%) chance of inland rain tonight (under 0.10 in. of rain possible),
  • Mostly cloudy and a bit cooler with a good (50%) chance of rain Friday and in the evening (under 0.10 in. of rain possible), rain likely (70%) late at night (0.10 in. of rain possible),
  • Mostly cloudy with AM rain likely (70%), a bit cooler with a slight (20%) chance of showers Saturday afternoon and Saturday night.
  • highs 73-66 lows 56-52.
  • Mostly cloudy with a (40%) chance of showers and a bit cooler Sunday, partly cloudy with a slight (20%) chance of evening showers, just partly cloudy late Sunday night,
  • Partly cloudy with a slight (20%) chance of showers and a bit warmer Monday, mostly clear at night,
  • Mostly sunny and a bit warmer Tuesday, partly cloudy Tuesday night,
  • Then partly cloudy and a bit warmer Wednesday.
  • highs 63-67 lows near 48. (Seasonal Averages high 63 low 51)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Mostly sunny and a bit warmer today, partly cloudy with a good (50%) chance of evening rain, becoming mostly cloudy with a good (50%) chance of rain late tonight,
  • Mostly cloudy with a good (50%) chance of AM rain, a bit cooler with rain likely (70%) Friday afternoon and at night,
  • Mostly cloudy with AM rain, showers and a bit cooler Saturday afternoon, showers likely (70%) Saturday night.
  • snow level above 8,000 ft. today through Saturday night.
  • highs 66-58 lows 46-49 cooling back to 42 Saturday night.
  • Mostly cloudy with showers likely (70%) and a bit cooler Sunday afternoon, partly cloudy with a (40%) chance of evening showers, just mostly cloudy late Sunday night,
  • Clouds and sun with a slight (20%) chance of AM rain and snow showers,  a (30%) chance of showers and a bit warmer Monday afternoon, partly cloudy at night,
  • Some AM clouds, mostly sunny and a bit warmer with a slight (20%) chance of showers Tuesday afternoon, mostly clear Tuesday night,
  • AM sun, then partly cloudy and a bit warmer Wednesday afternoon.
  • snow level 8,000 ft. falling to 7,000 ft. Sunday afternoon, 6,500 ft. Sunday evening, free air freezing level 6,000 ft. late Sunday night, 5,000 ft. rising to 6,000 ft. Monday afternoon, free air freezing level 7,500 ft. Monday night, 7,000 ft. rising to 10,000 ft. Tuesday afternoon, 11,000 ft. rising to 12,000 ft. late Tuesday night, then 11,000 ft. Wednesday.
  • highs 49-64 lows 34-38.