June 17, 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
- None At This Time.
- 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 Low Pressure Trough (“U” shape) will increase the rain chances in the Pacific Northwest for a bit. The graphics for days 1-3 show no new frontal systems approaching Oregon. The graphics for days 3-7 Monday through Friday show a front coming from the west into Oregon Wednesday.
Forecast for the South Willamette Valley including Eugene-Springfield:
- Partly cloudy with a good (50%) chance of evening showers with a slight (20%) of thunderstorms, partly cloudy with patchy fog late tonight (under 0.10 in. of rain possible, more in storms),
- Clouds and sun with patchy AM fog and a (40%) chance of showers, a mix of clouds and sun and slightly cooler with a (40%) chance of showers and a slight (20%) chance of thunderstorms Saturday afternoon (under 0.10 in. of rain possible (more in storms), a slight (20%) chance of evening showers and thunderstorms, just mostly cloudy late Saturday night,
- A mix of clouds and sun and a bit warmer with a slight (20%) chance of showers Sunday (Father’s Day, Juneteenth), partly cloudy Sunday night,
- A mix of clouds and sun and a bit warmer Monday, then mostly clear Monday night.
- lows 47-50 highs 64-72.
- Mostly sunny and a bit warmer Tuesday (Summer Solstice), mostly clear in the evening, partly cloudy Tuesday night,
- Mostly sunny and a bit cooler Wednesday, mostly clear at night,
- Mostly sunny and a bit cooler Thursday, mostly clear Thursday night,
- Then sunny and a bit warmer Friday.
- highs 77-72 warming to 74 Friday lows 52-49. (Seasonal Averages high 75 low 48)
Forecast for the Umpqua Valley including Roseburg:
- Mostly cloudy with a (30%) chance of showers tonight (under 0.10 in. of rain possible), patchy fog late,
- Mostly cloudy with patchy AM fog and and a (30%) chance of showers, a bit warmer with a (30%) chance of showers Saturday afternoon (under 0.10 in. of rain possible), partly cloudy with a slight (20%) chance of evening showers, partly cloudy with patchy fog late Saturday night (under 0.10 in. of rain possible),
- Mostly cloudy with patchy AM fog, partly cloudy and a bit warmer Sunday afternoon (Father’s Day, Juneteenth), mostly clear in the evening, just partly cloudy at night,
- lows 48-50 highs 66-73.
- AM clouds, sunny and a bit warmer Monday afternoon, clear Monday night,
- Mostly sunny and a bit warmer Tuesday, mostly clear at night,
- Some AM clouds, sunny Wednesday afternoon, mostly clear Wednesday night,
- Then mostly sunny and a bit cooler Thursday and Friday, mostly clear Thursday night.
- highs 79-74 lows 54-52. (Seasonal Averages high 77 low 53).
Forecast for the Oregon Coast including Coos Bay and North Bend:
- Becoming mostly cloudy late tonight with patchy coastal fog late tonight while patchy inland late evening fog continuing tonight,
- Mostly cloudy with patchy AM fog, a (30%) chance of showers Saturday (under 0.10 in. of rain possible), partly cloudy in the evening, mostly cloudy with patchy fog late Saturday night,
- Mostly cloudy with patchy AM inland fog, party cloudy and a bit warmer Sunday afternoon (Father’s Day, Juneteenth), partly cloudy in the evening, mostly cloudy late at night,
- AM clouds, sunny and a bit warmer Monday afternoon, then mostly clear Monday night.
- lows near 50 highs 63-68.
- Mostly sunny and a bit warmer Tuesday, partly cloudy Tuesday night,
- Partly cloudy and a bit cooler Wednesday, mostly clear at night,
- Mostly sunny Thursday, mostly clear Thursday night,
- Then sunny Friday.
- highs 69-66 lows 52-49. (Seasonal Averages high 64 low 51)
Forecast for the Northern Oregon Cascades including Willamette Pass:
- Mostly cloudy with a good (50%) chance of evening rain or snow showers with a slight (20%) chance of thunderstorms, a good (50%) chance of rain or snow showers with patchy fog late tonight (0.10 in. of rain possible, more in storms, 1 in. of snow possible),
- Mostly cloudy with patchy dense AM fog and a good (50%) chance of snow showers with a slight (20%) chance of showers, a good (50%) chance of showers and a bit cooler Saturday afternoon, a (40%) chance of of mainly evening showers, then just mostly cloudy with patchy fog late Saturday night,
- A mix of clouds and sun and a bit warmer with a slight (20%) chance of showers Sunday (Father’s Day, Juneteenth), just partly cloudy Sunday night,
- Mostly sunny and warmer Monday, partly cloudy in the evening, then mostly clear late Monday night,
- snow level 5,500 ft. tonight and Saturday, 6,000 ft. Saturday night, 6,000 ft. rising to 7,000 ft. Sunday afternoon, free air freezing level 10,000 ft. Sunday night, 11,000 ft. Monday, then 12,000 ft. Monday night.
- lows 35-38 highs 47-63.
- Sunny and a bit warmer Tuesday, mostly clear Tuesday night,
- Sunny and a bit cooler Wednesday, mostly clear in the evening, partly cloudy late at night,
- Then sunny and a bit cooler Thursday and Friday, mostly clear Thursday night,
- free air freezing level 13,000 ft. Tuesday and Tuesday night, 14,000 ft. Wednesday and Wednesday night, then 13,000 ft. Thursday through Friday.
- highs 69-65 lows 42-39.