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June 6, 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

  • An Upper Level Low Pressure Trough (“U” shape) will help increase the frontal activity over Oregon. The graphics for days 1-3 show the frontal system that slid through Sunday. The graphics for days 3-7   Thursday through Monday show the frontal activity approaching the Pacific Northwest Friday into Saturday, then another one offshore next Monday.
  • Note: The Hurricane season has officially begun. Hurricane Agatha struck southern Mexico and fell apart. It’s remnants redeveloped in the Gulf of Mexico and moved across South Florida producing torrential rains, then moved over the Atlantic Ocean.

Forecast for the South Willamette Valley including Eugene-Springfield:

  • Mostly cloudy with a slight (20%) chance of AM showers, a mix of clouds and sun and a bit cooler with a slight (20%) chance of showers this afternoon (under 0.10 in. of rain possible), partly cloudy with a slight (20%) chance of evening showers, mostly clear late tonight,
  • A mix of clouds and sun and a bit warmer Tuesday, mostly cloudy with a (40%) chance of rain at night,
  • Mostly cloudy start, partly cloudy and a bit cooler Wednesday afternoon, then mostly cloudy Wednesday night.
  • highs 69-76 lows 45-53 cooling to 52 Wednesday night .
  • A mix of clouds and sun and a bit warmer with a slight (20%) chance of rain Thursday afternoon, mostly cloudy with a good (50%) chance of rain Thursday night,
  • A mix of clouds and sun and a bit warmer with a good (50%) chance of rain Friday afternoon, mostly cloudy with a good (50%) chance of rain at night,
  • Mostly cloudy with a a good (50%) chance of AM rain, partly cloudy and a bit cooler with a good (50%) chance of rain Saturday afternoon, mostly cloudy with a (40%) chance of rain Saturday night,
  • Then a mix of clouds and sun and a bit cooler with a (40%) chance of rain Sunday.
  • highs 76-79 cooling to 72 Sunday lows 57-52. (Seasonal Averages high 72 low 46)

Forecast for the Umpqua Valley including Roseburg:

  • Mostly cloudy with a (30%) chance of AM showers, just partly cloudy and slightly cooler this afternoon, mostly clear this evening, partly cloudy late tonight,
  • Partly cloudy start, mostly cloudy and warmer Tuesday afternoon, mostly cloudy with a slight (20%) chance of showers at night,
  • Mostly cloudy and a bit warmer Wednesday, then partly cloudy in the evening, then mostly cloudy late Wednesday night.
  • highs 70-78 lows 49-56 cooling to 53 Wednesday night.
  • Mostly cloudy Thursday, mostly cloudy with a slight (20%) chance of showers Thursday night,
  • Partly cloudy and a bit warmer with a slight (20%) chance of showers Friday, a (40%) chance of showers at night,
  • Mostly cloudy with a (40%) chance of showers and a bit cooler Saturday, a (30%) chance of showers Saturday night,
  • Mostly cloudy with a slight (20%) chance of AM showers, then partly cloudy and a bit cooler with a slight (20%) chance of showers Sunday afternoon.
  • highs 78-82 cooling to 74 Sunday lows 60-62 cooling to 4 Saturday night. (Seasonal Averages high 74 low 51).

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

  • Mostly cloudy with a slight (20%) chance of AM showers, just partly cloudy this afternoon, mostly clear this evening, partly cloudy late tonight,
  • Some AM clouds, mostly cloudy Tuesday afternoon, mostly cloudy with a (30%) chance of showers at night (under 0.10 in. of rain possible),
  • Mostly cloudy and a bit warmer Wednesday, mostly cloudy Wednesday night.
  • highs 65-68 lows 48-52 cooling to 49 Wednesday night.
  • Mostly cloudy and a bit cooler Thursday, a slight (20%) chance of showers Thursday night,
  • Mostly cloudy and a bit warmer with a (30%) chance of showers Friday and at night,
  • Mostly cloudy and a bit cooler with a (40%) chance of showers Saturday, a (30%) chance of showers Saturday night,
  • Then mostly cloudy with a (30%) chance of showers Sunday.
  • highs 65-69 cooling to 65 Sunday lows 55-52. (Seasonal Averages high 63 low 50)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Mostly cloudy with a good (50%) chance of AM showers, a mix of clouds and sun and a bit cooler with a slight (20%) chance of showers this afternoon, just partly cloudy tonight,
  • Mostly sunny and warmer Tuesday, mostly cloudy with a (40%) chance of rain at night,
  • Mostly cloudy start, a mix of clouds and sun and a bit cooler Wednesday afternoon, then mostly cloudy Wednesday night.
  • snow level 6,500 ft. today, free air freezing level 12,000 ft. tonight, 12,000 ft. Tuesday, snow level above 8,000 ft. Tuesday night, then free air freezing level 12,000 ft. Wednesday and Wednesday night.
  • highs 52-66 cooling to 63 Wednesday lows 35-44 cooling to 42 Wednesday night.
  • A mix of clouds and sun and a bit warmer Thursday, mostly cloudy with a slight (20%) chance of rain Thursday night,
  • Clouds and sun with a slight (20%) chance of AM rain, a mix of clouds and sun and a bit warmer with a (40%) chance of rain Friday afternoon, mostly cloudy with a good (50%) chance of rain at night,
  • A mix of clouds and sun and a bit cooler with a good (50%) chance of rain Saturday, mostly cloudy with a (40%) chance of rain Saturday night,
  • Then a mix of clouds and sun and a bit cooler with a (40%) chance of rain Sunday.
  • free air freezing level 13,000 ft. Thursday, snow level above 8,000 ft. Thursday night through Saturday, above 8,000 ft. falling to 8,000 ft. late Saturday night, then 7,000 ft. Sunday.
  • highs 66-68 cooling to 63 Sunday lows 46-48 cooling to 42 Tuesday night.