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June 19, 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

  • A FREEZE WARNING IS IN EFFECT FROM 1AM UNTIL 8 AM TUESDAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, WESTERN LAKE COUNTY, AND CENTRAL AND EASTERN LAKE COUNTY.

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 Low Pressure Trough  (“U” shape) over the Pacific Northwest will keep up the chances for rain. The graphics for days 1-3  show no frontal systems approaching the Pacific Northwest. The graphics for days 3-7  Thursday through Monday show no major frontal systems moving into Oregon.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Mostly cloudy with a slight (20%) chance of evening showers and thunderstorms, a good (50%) of showers late tonight (0.10 in. of rain possible, more in storms),
  • Mostly cloudy and a bit warmer with a good (50%) chance of showers Tuesday (under 0.10 in. of rain possible), just partly cloudy Tuesday night,
  • Partly cloudy and warmer Wednesday (Summer Solstice 7:57 am), mostly clear at night,
  • Sunny and a bit warmer Thursday, then mostly clear Thursday night.
  • lows 44-52 highs 66-84.
  • Partly cloudy and a bit cooler Friday and Friday night,
  • Partly cloudy and a bit warmer Saturday, partly cloudy at night,
  • Then partly cloudy with a slight (20%) chance of showers Sunday afternoon through Monday.
  • highs 77-80 lows 49-52.  (seasonal averages high 75 low 48)

Forecast for the Umpqua Valley including Roseburg:

  • Mostly cloudy with a (40%) chance of evening showers and a slight (20%) chance of thunderstorms, a (40%) chance of showers late tonight (under 0.10 in. of rain possible),
  • Mostly cloudy with a (30%) chance of showers and a bit warmer Tuesday, mostly cloudy in the evening, becoming mostly clear late Tuesday night,
  • Sunny and warmer Wednesday (Summer Solstice 7:57 am), mostly clear at night,
  • Sunny and warmer Thursday, then partly cloudy with a slight (20%) chance of showers Thursday night.
  • low 45-56 highs 66-88.
  • Partly cloudy and a bit cooler with a slight (20%) chance of showers Friday, partly cloudy Friday night,
  • Partly cloudy and a bit warmer Saturday, partly cloudy at night,
  • Partly cloudy and a bit warmer with a slight (20%) chance of showers Sunday afternoon, then partly cloudy with a slight (20%) chance of showers Sunday night and Monday.
  • highs 79-83 lows 54-57. (seasonal averages high 77 low 53)

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

  • Mostly cloudy with evening showers likely (70%), a (40%) chance of showers late tonight (under 0.10 in. of rain possible),
  • Mostly cloudy and a bit warmer with a (30%) chance of showers Tuesday (under 0.10 in. of rain possible), mostly cloudy in the evening, partly cloudy late Tuesday night,
  • Sunny and a bit warmer Wednesday (Summer Solstice 7:57 am), mostly clear at night,
  • Sunny and a bit warmer Thursday, then mostly cloudy Thursday night.
  • lows 48-53 highs 63-70.
  • Mostly cloudy and a bit cooler Friday, mostly cloudy Friday night,
  • Mostly cloudy start, partly cloudy and a bit warmer Saturday afternoon, mostly cloudy with a slight (20%) chance of showers late at night,
  • Mostly cloudy with a slight (20%) chance of AM showers, partly cloudy with a slight (20%) chance  of showers Sunday afternoon and evening, mostly cloudy with a slight (20%) chance of showers late Sunday night,
  • Mostly cloudy with a slight (20%) chance of AM showers, then partly cloudy with a slight (20%) chance of showers Monday afternoon.
  • highs 66-68 lows near 52. (seasonal averages high 64 low 52)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Mostly cloudy with evening rain showers with snow showers likely (70%) and a (40%) chance of thunderstorms, a slight (20%) chance rain and snow showers  late tonight (0.25 in. of rain possible, more in storms, 1 in. of snow possible),
  • Clouds and sun with a slight (20%) chance of AM rain and snow showers, a mix of clouds and sun with a (40%) chance of showers and a bit warmer Tuesday afternoon, partly cloudy with a slight (20%) chance of evening showers, just partly cloudy late Tuesday night,
  • Mostly sunny start, partly cloudy and warmer Wednesday afternoon (Summer Solstice 7:57 am), partly cloudy in the evening, mostly clear late at night,
  • AM sun, partly cloudy and a bit warmer with a slight (20%) chance of showers Thursday afternoon, a (40%) chance of evening showers, then just partly cloudy late Thursday night.
  • snow level 4,500 ft. tonight, 4,500 ft. rising to 6,000 ft. Tuesday afternoon, 6,500 ft. Tuesday night, free air freezing level 8,000 ft. rising to 9,000 ft. Wednesday afternoon, 10,000 ft. rising to 11,000 ft. late Wednesday night, then snow level above 8,000 ft. Thursday and Thursday night.
  • lows 30-42 highs 49-68.
  • Partly cloudy and a bit cooler with a (40%) chance of showers Friday afternoon, a (30%) chance of evening showers, just partly cloudy late Friday night,
  • Partly cloudy and a bit warmer with a slight (20%) chance of showers Saturday afternoon, partly cloudy with a slight (20%) chance of evening showers, just partly cloudy late Saturday night, a (30%) chance of evening showers, partly cloudy late at night,
  • AM clouds and sun with a slight (20%) chance of showers, a mix of clouds and sun with a good (50%) chance of showers and a slight (20%) chance of thunderstorms Sunday afternoon, mostly cloudy with a good (50%) chance of showers of evening showers, partly cloudy with a good (50%) chance of showers late Sunday night,
  • Then a mix of clouds and sun and a bit cooler with a good (50%) chance of showers Monday.
  • snow level above 8,000 ft. Friday through Monday.
  • highs 63-68 cooling to 66 Monday lows 40-44.