May
22.
An Upper Level High Pressure Ridge (“Arch” shape) takes over bringing sunshine today through most of the Holiday weekend. The graphics for days 1-3 show no fronts moving through the Pacific Northwest through the period. The graphics for days 3-7 Monday through Friday show a complex frontal system sliding through Oregon between Monday and Tuesday. Another front will push through next Thursday and Thursday.
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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.
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Air Quality Index:
Eugene/Springfield: The Air Quality Index is 24 in the Good category measuring Particulate Matter.
Oakridge: The Air Quality Index is 19 in the Good category measuring Particulate Matter.
Cottage Grove: The Air Quality Index is 26 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: 219 VERY HIGH
TREES: 1 LOW
WEEDS: 3 LOW
Measured 5.22.25
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:
- Mostly sunny and warmer today, mostly clear tonight,
- Sunny and a bit warmer Saturday, mostly clear Saturday night,
- Mostly sunny and a bit cooler Sunday, mostly cloudy with a slight (20%) chance of showers at night,
- Mostly cloudy with a slight (20%) AM showers, a mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Monday afternoon (Memorial Day), then partly cloudy Monday night.
- highs 72-77 cooling to 74 Monday lows 45-43 warming to 50 Monday night .
- Mostly sunny and a bit warmer Tuesday, mostly clear Tuesday night,
- Mostly sunny and a bit warmer with a slight (20%) chance of showers Wednesday, mostly cloudy with a (30%) chance of showers at night,
- Then a mix of clouds and sun and a bit cooler with a slight (20%) chance of showers Thursday.
- highs 72-77 cooling to 74 Thursday lows 47-50. (seasonal averages high 69 low 45).
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HOME WOOD HEATING ADVISORY:
The Eugene & Springfield: GREEN– Fireplace and wood stove used is allowed. Protect air quality by not heating with wood when possible.
Oakridge And Westfir: GREEN– Fireplace and wood stove used is allowed. Protect air quality by not heating with wood when possible.
The use of pellet stoves is always allowed.
Data courtesy of Lane Regional Air Protection Agency (LRAPA.org)
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Forecast for the Umpqua Valley including Roseburg:
- Mostly cloudy start, partly cloudy and warmer this afternoon, mostly clear in the evening, partly cloudy late Friday night,
- Sunny and a bit warmer Saturday, mostly clear Saturday night,
- Partly cloudy and a bit cooler Sunday, mostly cloudy with a slight (20%) chance of showers at night,
- Mostly cloudy and a bit cooler with a slight (20%) chance of showers Monday, partly cloudy Monday night.
- highs 74-82 lows 46-56 cooling to 53 Monday night.
- Partly cloudy and a bit warmer Tuesday, mostly clear Tuesday night,
- Partly cloudy and a bit warmer Wednesday, partly cloudy at night,
- Mostly cloudy with a slight (20%) chance of AM showers, then partly cloudy and a bit cooler with a slight (20%) chance of showers Thursday afternoon.
- highs 72-79 cooling to 75 Thursday lows 53-57. (seasonal averages high 72 low 49).
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Forecast for The South Oregon Coast Including Coos Bay and North Bend:
- Mostly cloudy with patchy AM fog, partly cloudy and a bit warmer this afternoon, mostly clear this evening, partly cloudy with patchy fog late tonight,
- Patchy AM coastal fog while areas of inland AM fog, sunny and a bit warmer Saturday afternoon, mostly clear in the evening, partly cloudy with patchy fog late Saturday night,
- Mostly cloudy with patchy AM fog, partly cloudy and a bit cooler Sunday afternoon, mostly cloudy with a slight (20%) chance of showers late Sunday night,
- Mostly cloudy with a slight (20%) chance of showers Monday (Memorial Day), just partly cloudy at night.
- highs 69-74 lows 43-42 warming to 45 Saturday night.
- Partly cloudy and a bit warmer Tuesday, partly cloudy Tuesday night,
- Partly cloudy and a bit cooler Wednesday, mostly cloudy with a slight (20%) chance of showers late at night,
- Mostly cloudy with a slight (2o%) chance of AM showers, then partly cloudy with a slight (20%) chance of showers Thursday afternoon.
- highs 60-62 lows 48-50.
- (seasonal averages high 61 low 49). _______________
Forecast for the Northern Oregon Cascades including the Cascades in Lane County:
- Mostly sunny and a bit warmer today, partly cloudy this evening, clear late tonight,
- Sunny and warmer Saturday, mostly clear Saturday night,
- Mostly sunny Sunday, mostly cloudy with a good (50%) chance of showers with a slight (20%) thunderstorms at night,
- Mostly cloudy with a (40%) chance of AM showers, a mix of clouds and sun and cooler with a (40%) chance of showers Monday afternoon (Memorial Day), mostly cloudy with a slight (20%) chance of evening showers, partly cloudy with a slight (20%) chance of showers late Monday night.
- free air freezing level 9,000 ft. rising to 10,000 ft. this afternoon, 11,000 ft. Friday night, 12,000 ft. Saturday through Sunday, snow level above 8,000 ft. Sunday night, 8,000 ft. Monday and Monday night.
- highs 59-70 lows 35-43 cooling to 42 Monday night.
- Mostly sunny and warmer Tuesday, partly cloudy in the evening, mostly clear late Tuesday night,
- Mostly sunny and a bit warmer with a (40%) chance of showers Wednesday, mostly cloudy with a (40%) chance of showers at night,
- Then mostly sunny and cooler with a slight (20%) chance of showers Thursday.
- free air freezing level 12,000 ft. Sunday, snow level above 8,000 ft. Sunday night, 8,000 ft., Monday and Monday night, free air freezing level 12,000 ft. Tuesday, 13,000 ft. Tuesday night, then snow level above 8,000 ft. Wednesday through Thursday.
- highs 65-73 cooling to 66 Monday warming to 68 Tuesday lows 42-44 cooling back to 42 Monday night warming to 36 Wednesday night.
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