An Upper Level High Pressure Ridge (“Arch”shape) takes over as the weak cold front leaves Oregon. The graphics for days 1-3 show a dry cold front moving through the Pacific Northwest today. The graphics for days 3-7 Sunday through Thursday show a cold frontal system will be to our northwest Monday then pushing through next Tuesday.
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ADVISORIES:
- AN EXTREME HEAT WATCH IS IN EFFECT FROM SATURDAY AFTERNOON THROUGH MONDAY EVENING FOR EASTERN CURRY COUNTY AND JOSEPHINE COUNTY, AND JACKSON 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.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 11 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 12 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 8 in the Good category measuring Particulate Matter.
Data courtesy of Lane Regional Air Protection Agency (LRAPA.org)
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Eugene-Springfield Area Pollen count:
GRASS: 24 HIGH
TREES: 0 ABSENT
WEEDS: 0 ABSENT
Measured 7.7.25
Data courtesy of Oregon Allergy Associates.
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:
- Sunny and a bit cooler today, mostly clear tonight,
- Then sunny and a bit warmer Friday and Saturday, clear both nights,
- highs 85-92 lows 55-59.
- Sunny Sunday, clear Sunday night,
- Sunny and a bit cooler Monday, clear at night,
- Sunny and a bit warmer Tuesday, clear Tuesday night,
- Then sunny Wednesday.
- highs 95-92 warming to 96 Tuesday and Wednesday lows 59-56 warming back to 59 Tuesday night. (seasonal averages high 83 low 51).
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Forecast for the Umpqua Valley including Roseburg:
- AM clouds, sunny and a bit warmer this afternoon, mostly clear tonight,
- Then sunny and a bit warmer Friday and Saturday, clear both nights.
- highs 87-95 lows 62-64. .
- Sunny and a bit warmer Sunday, clear Sunday night,
- Sunny and a bit cooler Monday, clear at night,
- Sunny and a bit warmer Tuesday, clear Tuesday night,
- Then sunny Wednesday.
- highs 96-95 warming to 97 Tuesday and Wednesday lows 65-60 warming to 64 Tuesday night (seasonal averages high 85 low 57).
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- AM clouds and patchy fog, sunny and a bit warmer this afternoon, partly cloudy this evening, mostly cloudy with patchy inland fog late tonight,
- Some AM clouds with patchy fog, sunny Friday, mostly clear in the evening, partly cloudy with patchy fog late at night,
- Some AM clouds with patchy fog, sunny and a bit warmer Saturday afternoon, then mostly clear Saturday night.
- highs 72-73 lows 53-55.
- Mostly sunny Sunday, mostly clear Sunday night,
- Mostly sunny and a bit cooler Monday, mostly clear at night,
- Mostly sunny and a bit warmer Tuesday, mostly clear Tuesday night,
- Then mostly sunny and a bit cooler Wednesday.
- highs 72-73 cooling back to 73 Wednesday lows 54-52 warming back to 54 Tuesday night.
- (seasonal averages high 66 low 53). _______________
Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly sunny and a bit cooler today, mostly clear tonight,
- Then sunny and a bit warmer Friday and Saturday, clear both nights,
- free air freezing level 14,000 ft. rising to 15,000 ft. tonight, 15,000 ft. Thursday and Thursday night, 15,000 ft. rising to 16,000 ft. Friday afternoon, then 16,000 ft. Friday night through Saturday night.
- highs 73-83 lows 47-54.
- Sunny and a bit warmer Sunday, clear Sunday night,
- Sunny and a bit cooler Monday, clear at night,
- Then sunny and a bit warmer Tuesday and Wednesday, clear Tuesday night.
- highs 85-84 warming to 88 Wednesday lows 54-52 warming to 56 Tuesday night.
- free air freezing level 16,000 ft. Sunday and Sunday night, above 16,000 ft. Monday through Tuesday night, then 16,000 ft. Wednesday.
- highs 82-83 lows 52-53.
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