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 UNTIL 8 AM TODAY 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:
- Patchy AM and late night fog, mostly sunny and a bit warmer this afternoon, mostly clear tonight,
- Sunny and a bit warmer Tuesday, clear at night,
- Sunny and a bit warmer Wednesday (Juneteenth), then mostly clear Wednesday night.
- highs 67-83 lows 43-50.
- Sunny and a bit warmer Thursday (Summer Solstice 1:50 pm), partly cloudy in the evening, mostly clear late Thursday night,
- Sunny and a bit warmer Friday, mostly clear at night,
- Sunny and a bit cooler Saturday, mostly clear Saturday night,
- Then mostly sunny and a bit cooler Sunday.
- highs 85-87 cooling to 77 Sunday lows near 52. (seasonal averages high 74 low 48)
Forecast for the Umpqua Valley including Roseburg:
- Mostly cloudy start, partly cloudy and warmer this afternoon, mostly clear tonight,
- Sunny and a bit warmer Tuesday, mostly clear at night,
- Mostly sunny and a bit warmer Wednesday afternoon (Juneteenth), then mostly clear Wednesday night.
- highs 78-86 lows 47-54.
- Partly cloudy and a bit warmer Thursday (Summer Solstice 1:50 pm), mostly clear Thursday night,
- Mostly sunny and a bit warmer Friday, mostly clear Friday night,
- Then mostly sunny and a bit cooler Saturday and Sunday, mostly clear Saturday night,
- highs 87-89 cooling to 80 Sunday lows 54-56 cooling back to 54 Saturday night. (seasonal average high 76 low 52)
Forecast for the Oregon Coast including Coos Bay and North Bend:
- Partly cloudy and a bit warmer today, mostly clear this evening, partly cloudy late tonight,
- Sunny and a bit warmer Tuesday, mostly clear at night,
- Sunny and a bit warmer Wednesday (Juneteenth), then partly cloudy Wednesday night.
- highs 64-69 lows 45-50.
- Partly cloudy Thursday (Summer Solstice 1:50 pm) and in the evening, mostly cloudy late Thursday night,
- Partly cloudy Friday and at night,
- Partly cloudy Saturday, partly cloudy Saturday night,
- Mostly cloudy start, then partly cloudy and a bit cooler Sunday afternoon.
- highs 68-70 cooling to 66 Sunday lows 52-50 warming back to 52 Saturday night. (seasonal average high 64 low 51)
Forecast for the Northern Oregon Cascades including Willamette Pass:
- A mix of clouds and sun and a bit warmer today, partly cloudy tonight,
- Sunny and warmer Tuesday, mostly clear at night,
- Sunny and warmer Wednesday (Juneteenth), then mostly clear Wednesday night.
- free air freezing level 5,000 ft. rising to 6,000 ft. today, 7,000 ft. tonight, 8,000 ft. rising to 9,000 ft. Tuesday afternoon, 110,000 ft. rising to 11,000 ft. late Tuesday night, 11,000 ft. Wednesday, then 12,000 ft. Wednesday night.
- lows 30-44 highs 50-65.
- Mostly sunny and a bit warmer Thursday (Summer Solstice 1:50 pm), partly cloudy in the evening, clear late Thursday night,
- Sunny and a bit warmer Friday, mostly clear at night,
- Then sunny and a bit cooler Saturday and Sunday, clear Saturday night,
- free air freezing level 13,000 ft. Thursday through Friday, 14,000 ft. Friday night, then 15,000 ft. Saturday through Sunday.
- highs 72-75 lows 44-47.