June 30, 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 over us bringing more sunshine and heat. The graphics for days 1-3 show a weak front offshore Sunday. The graphics for days 3-7 Wednesday through Sunday show a frontal system pushing into the Pacific Northwest next Sunday.
Forecast For The South Willamette Valley Including Eugene-Springfield:
- A mix of clouds and sun today, mostly clear tonight,
- Sunny Monday, mostly clear at night,
- Sunny Tuesday, then clear Tuesday night.
- highs near 82 lows 54-49.
- Sunny and a bit warmer Wednesday and Thursday (Independence Day), clear both nights,
- Sunny and a bit warmer Friday, clear Friday night,
- Then sunny and a bit cooler Saturday.
- highs 85-95 cooling to 93 Saturday lows 52-55. (seasonal averages high 79 low 50)
Forecast for the Umpqua Valley including Roseburg:
- AM clouds with patchy fog, sunny and a bit warmer this afternoon, mostly clear and hazy late tonight,
- Some AM clouds, sunny Monday, clear at night,
- Sunny Tuesday, then clear Tuesday night.
- highs near 84 lows 58-54.
- Sunny and a bit warmer Wednesday, clear Wednesday night,
- Sunny and a bit warmer Thursday (Independence Day), clear at night,
- Then sunny and a bit warmer Friday and Saturday, clear Friday night.
- highs 88-99 cooling to 97 Saturday lows 56-60. (seasonal average high 81 low 55)
Forecast for the Oregon Coast including Coos Bay and North Bend:
- Mostly cloudy with areas of AM coastal fog while patchy AM inland fog, sunny this afternoon, mostly clear this evening, mostly cloudy and hazy late tonight,
- Some AM clouds, sunny and a bit cooler Monday, mostly clear at night,
- Mostly sunny Tuesday, then mostly clear Tuesday night.
- highs 73-70 lows 53-50.
- Mostly sunny and a bit warmer Wednesday, mostly clear Wednesday night,
- Mostly sunny and a bit warmer Thursday (Independence Day), mostly clear at night,
- Mostly sunny Friday, mostly clear Friday night,
- Then mostly sunny and a bit warmer Saturday.
- highs 72-76 lows near 53. (seasonal average high 65 low 53)
Forecast for the Northern Oregon Cascades including Willamette Pass:
- Mostly sunny today, mostly clear tonight,
- Sunny and a bit warmer Monday, mostly clear at night,
- Sunny and a bit warmer Tuesday, then clear Tuesday night.
- free air freezing level 12,000 ft. today, 12,000 ft. rising to 13,000 ft. late tonight, 12,000 ft. rising to 13,000 ft. Monday afternoon, 14,000 ft. rising to 15,000 ft. Monday night, then 15,000 ft. Tuesday and Tuesday night.
- highs 67-72 lows 45-42.
- Sunny and a bit warmer Wednesday, clear Wednesday night,
- Sunny and a bit warmer Thursday (Independence Day), clear Thursday night,
- Sunny and a bit warmer Friday, clear Friday night,
- Then sunny Saturday.
- free air freezing level 16,000 ft. Wednesday through Thursday, then above 16,000 ft. Thursday night through Saturday,
- highs 76-86 lows 46-53.