June 20, 2022
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 2 AM UNTIL 9 AM TODAY FOR THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, AND WESTERN, CENTRAL, AND EASTERN LAKE COUNTY.
- A PERMANENT RECREATIONAL HEALTH ADVISORY IS IN EFFECT FOR THE SOUTH UMPQUA RIVER AND MAINSTEM UMPQUA RIVER. THE ADVISORY COVERS THE SOUTH UMPQUA RIVER FROM CANYONVILLE DOWNSTREAM TO THE CONFLUENCE OF THE MAINSTEM UMPQUA RIVER, AND THE MAINSTEM UMPQUA RIVER DOWNSTREAM PAST ELKTON TO LAWSON BAR. PEOPLE IN THE BEDROCK ALONG THE RIVERS EDGE ARE ARE KNOWN TO DEVELOP CYANOBACTERIA (BLUE-GREEN ALGAE) BLOOMS THAT CAN BE HARMFUL TO PETS AND PEOPLE IF ACCIDENTAL INGESTION OCCURS. SIGNS HAVE BEEN POSTED AT SEVERAL ACCESS AREAS ALONG THE RIVER.
THE WEATHER PATTERN
An Upper Level High Pressure Ridge (“Arch” shape) will be bringing sunshine and warmer temperatures just in time as Summer begins. The graphics for days 1-3 show no new frontal systems approaching Oregon. The graphics for days 3-7 Thursday through Monday show the front that came into Oregon Wednesday.
Forecast for the South Willamette Valley including Eugene-Springfield:
- AM clouds, mostly sunny and warmer this afternoon, mostly clear tonight,
- Partly cloudy and a bit warmer Tuesday (Summer Solstice), clear at night.,
- Mostly sunny and a bit warmer Wednesday, then mostly clear Wednesday night.
- highs 73-82 lows 48-53.
- Mostly sunny and a bit cooler Thursday, mostly clear Thursday night.
- Mostly sunny and a bit warmer Friday, clear at night,
- Mostly sunny and a bit warmer Saturday, mostly clear Saturday night,
- Then mostly sunny Sunday.
- highs 79-84 lows 47-56. (Seasonal Averages high 75 low 48)
Forecast for the Umpqua Valley including Roseburg:
- AM clouds, sunny and a bit warmer this afternoon, clear tonight,
- Sunny and warmer Tuesday (Summer Solstice), clear at night,
- Mostly sunny and a bit warmer Wednesday, then mostly clear Wednesday night.
- highs 74-84 lows 52-57.
- Sunny and a bit cooler Thursday, clear Thursday night,
- Sunny Friday, clear at night,
- Then sunny and a bit warmer Saturday and Sunday, clear Saturday night.
- highs 80-86 lows 53-58. (Seasonal Averages high 77 low 53).
Forecast for the Oregon Coast including Coos Bay and North Bend:
- AM clouds, sunny and a bit warmer this afternoon, mostly clear tonight,
- Sunny and a bit warmer Tuesday (Summer Solstice), mostly clear at night,
- Mostly sunny and a bit warmer Wednesday, then mostly clear Wednesday night.
- highs 68-72 lows near 52.
- Mostly sunny and a bit cooler Thursday, mostly clear Thursday night,
- Mostly sunny Friday, mostly clear at night,
- Mostly sunny and a bit warmer Saturday, mostly clear Saturday night,
- Then sunny Sunday.
- highs 69-72 lows 50-52 (Seasonal Averages high 64 low 52)
Forecast for the Northern Oregon Cascades including Willamette Pass:
- Mostly cloudy start, partly cloudy and warmer this afternoon, mostly clear tonight,
- Sunny and warmer Tuesday (Summer Solstice), then mostly clear at night,
- Mostly sunny and a bit warmer Wednesday, then mostly clear Wednesday night.
- free air freezing level 10,000 ft. rising to 11,000 ft. this afternoon, 12,000 ft. tonight, 13,000 ft. Tuesday, 13,000 ft. Tuesday night and Wednesday, then 14,000 ft. Wednesday night.
- highs 62-73 lows 37-47.
- Some AM clouds, mostly sunny and a bit cooler Thursday afternoon, mostly clear Thursday night,
- Mostly sunny Friday, mostly clear at night,
- Mostly sunny and a bit warmer Saturday, mostly clear Saturday night,
- Then mostly sunny Sunday.
- free air freezing level 14,000 ft. Thursday, 13,000 ft. Thursday night and Friday, 14,000 ft. Friday night and Saturday, then 15,000 ft. Saturday night and Sunday.
- highs 70-75 lows 42-52.
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Just a slight chance of showers tonight.
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