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June 17, 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

  • A FREEZE WARNING IS IN EFFECT FROM 1 AM UNTIL 8 AM TUESDAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, 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) allows frontal movement through the Pacific Northwest. The graphics for days 1-3  show no frontal systems moving through the Pacific Northwest. The graphics for days 3-7   Thursday through Monday show no frontal systems pushing through the Pacific Northwest until a cold front moves through next Sunday.

Forecast For The South Willamette Valley Including Eugene-Springfield:

  • Partly cloudy this evening, mostly clear late tonight,
  • Sunny and warmer Tuesday, mostly clear Tuesday night,
  • Sunny and warmer Wednesday (Juneteenth), mostly clear at night,
  • Sunny and a bit warmer Thursday (Summer Solstice 1:50 pm), then mostly clear Thursday night.
  • lows 43-52 highs 74-86.
  • Sunny and a bit warmer Friday, mostly clear Friday night,
  • Sunny and a bit cooler Saturday, mostly clear at night,
  • Mostly sunny and a bit cooler Sunday, mostly clear Sunday night,
  • Then sunny and a bit warmer Monday.
  • highs 88-76 warming to 78 Monday lows 52-48.  (seasonal averages high 74 low 48)

Forecast for the Umpqua Valley including Roseburg:

  • Partly cloudy this evening, mostly clear tonight with patchy fog late,
  • Sunny and warmer Tuesday, mostly clear Tuesday night,
  • Mostly sunny and a bit warmer Wednesday afternoon (Juneteenth), mostly clear Wednesday night,
  • Some AM clouds, sunny and a bit warmer Thursday (Summer Solstice 1:50 pm), then mostly clear Thursday night.
  • lows 47-56 highs 79-88.
  • Mostly sunny and a bit warmer Friday, mostly clear Friday night,
  • Mostly sunny and a bit cooler Saturday, mostly clear Saturday night,
  • Some AM clouds, sunny and a bit cooler Sunday afternoon, mostly clear Sunday night,
  • Then mostly sunny and a bit warmer Monday.
  •  highs 92-80 warming to 82 Monday lows 56-52. (seasonal average high 76 low 52)

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

  • Partly cloudy this evening, mostly clear with patchy inland fog late tonight,
  • Patchy AM and late night fog, sunny and a bit warmer Tuesday, partly cloudy Tuesday night,
  • Sunny Wednesday (Juneteenth), mostly clear in the evening, partly cloudy late at night,
  • Then partly cloudy Thursday (Summer Solstice 1:50 pm) and Thursday night,
  • lows 44-50 highs near 68.
  • Partly cloudy and a bit cooler Friday and Friday night,
  • Partly cloudy and a bit warmer Saturday, partly cloudy Saturday night,
  • Mostly cloudy start, then partly cloudy and a bit cooler Sunday afternoon, mostly clear in the evening, partly cloudy late Sunday night,
  • Then sunny  and a bit warmer Monday.
  • highs 70-65 warming to 68 Monday lows 49-52 cooling to 48 Sunday night. (seasonal average high 64 low 51)

Forecast for the Northern Oregon Cascades including Willamette Pass:

  • Partly cloudy this evening, mostly clear late tonight,
  • Sunny and warmer Tuesday, mostly clear Tuesday night,
  • Sunny and warmer Wednesday (Juneteenth), mostly clear at night,
  • Mostly sunny and a bit warmer Thursday (Summer Solstice 1:50 pm), then mostly clear Thursday night.
  • free air freezing level 7,000 ft. tonight, 8,000 ft. rising to 9,000 ft. Tuesday afternoon, 10,000 ft. rising Tuesday night, 11,000 ft. Wednesday, 12,000 ft. Wednesday night and Thursday, then 13,000 ft. Thursday night.
  • lows 30-47 highs 62-74.
  • Sunny and a bit warmer Friday, mostly clear Friday night,
  • Sunny Saturday, clear at night,
  • Sunny and a bit cooler Sunday, clear Sunday night
  • Then sunny Monday.
  • free air freezing level 13,000 ft. Friday, 14,000 ft. Friday night, 15,000 ft. Saturday and Saturday night, then 14,000 ft. Sunday through Monday.
  • highs 77-68 lows 49-42.