June 30, 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
- As the Upper Level Low Pressure Trough moves eastward and the High Pressure in the Southwest US Strengthens our way we keep dry a while longer. The graphics for days 1-3 show no frontal systems over or approaching Oregon. The graphics for days 3-7 Sunday through Thursday show the frontal activity for the Pacific Northwest through the period and one frontal system offshore next Thursday.
- NOTE: As usual, we have already had the sunny and hot weather that we should have for the Independence Day Holiday weekend, but no.. more clouds, cooler and even a slight chance of a shower for at least part of the long 4th of July Holiday weekend.
Forecast for the South Willamette Valley including Eugene-Springfield:
- Partly cloudy tonight,
- AM clouds, mostly sunny Friday afternoon, partly cloudy Friday night,
- A mix of clouds and sun and a bit cooler Saturday, mostly cloudy with a slight (20%) chance of showers late at night,
- Mostly cloudy and a bit cooler with a slight (20%) chance of showers Sunday and Sunday night.
- lows 52-54 cooling back to 52 Sunday night highs 80-70.
- A mix of clouds and sun and a bit warmer with a slight (20%) chance of showers Monday (Independence Day), partly cloudy with a slight (20%) chance of showers late Monday night,
- Partly cloudy and a bit warmer with a slight (20%) chance of showers Tuesday and Wednesday, just partly cloudy both nights,
- Partly cloudy with a slight (20%) chance of AM showers, then just partly cloudy Thursday afternoon.
- highs 75-82 lows 52-55. (Seasonal Averages high 80 low 50)
Forecast for the Umpqua Valley including Roseburg:
- Mostly clear this evening, becoming mostly cloudy late tonight,
- Mostly cloudy start, partly cloudy and a bit cooler Friday afternoon, mostly clear in the evening, partly cloudy late Friday night,
- Mostly cloudy and a bit cooler with a slight (20%) chance of thunderstorms Saturday afternoon and evening, a slight (20%) chance of showers late at night,
- Mostly cloudy and a bit cooler with a slight (20%) chance of showers Sunday afternoon, then a slight (20%) chance of showers Sunday night.
- lows 54-52 highs 78-70.
- Mostly cloudy and a bit warmer with a slight (20%) chance of showers Monday (Independence Day), partly cloudy with a slight (20%) chance of showers Monday night,
- Partly cloudy and a bit warmer with a slight (20%) chance of showers Tuesday, mostly clear at night,
- Mostly sunny and a bit warmer Wednesday, mostly clear Wednesday night,
- Then mostly sunny Thursday.
- highs 77-82 lows 53-56. (Seasonal Averages high 81 low 55).
Forecast for the Oregon Coast including Coos Bay and North Bend:
- Partly cloudy this evening, mostly cloudy late tonight and Friday AM, partly cloudy and a bit warmer Friday afternoon and evening, mostly cloudy late Friday night,
- Mostly cloudy and a bit cooler Saturday, mostly cloudy with a slight (20%) chance of coastal showers late at night,
- Patchy AM and late night fog, mostly cloudy and a bit cooler with a slight (20%) chance of showers Sunday and Sunday night.
- lows 52-50 highs 67-64.
- Mostly cloudy and a bit warmer with a slight (20%) chance of showers Monday (Independence Day), partly cloudy with a slight (20%) chance of showers Monday night,
- Mostly cloudy and a bit warmer with a slight (20%) chance of showers Tuesday and in the evening, just partly cloudy Tuesday night,
- Partly cloudy and a bit warmer Wednesday and Wednesday night,
- Then partly cloudy Thursday.
- highs 67-69 lows 50-53. (Seasonal Averages high 65 low 53)
Forecast for the Northern Oregon Cascades including Willamette Pass:
- Partly cloudy tonight and Friday AM, mostly sunny in the afternoon, partly cloudy Friday night,
- Mostly cloudy and a bit cooler with a (40%) chance of showers and a slight (20%) chance of thunderstorms Saturday afternoon, mostly cloudy with a good (50%) chance of evening showers and a slight (20%) chance of thunderstorms, a good (50%) chance of showers late at night,
- Mostly cloudy and a bit cooler with a good (50%) chance of showers Sunday, a (40%) chance of evening showers, then a slight (20%) chance of showers late Sunday night.
- free air freezing level 13,000 ft. tonight through Friday night, then snow level above 8,000 ft. Saturday through Sunday, then above 8,000 ft. falling to 8,000 ft. late Sunday night.
- lows 44-46 cooling to 42 Sunday night highs 68-56.
- A mix of clouds and sun and a bit warmer with a (30%) chance of showers Monday (Independence Day), partly cloudy with a slight (20%) chance of evening showers, just partly cloudy late Monday night,
- Partly cloudy and a bit warmer with a slight (20%) chance of showers Tuesday afternoon and Wednesday afternoon, just partly cloudy late both nights.
- Then partly cloudy and a bit warmer Thursday.
- snow level 7,500 ft. rising to above 8,000 ft. Monday afternoon and evening, free air freezing level 11,000 ft. late Monday night and Tuesday morning, snow level above 8,000 ft. Tuesday afternoon, free air freezing level 12,000 ft. late Tuesday night and Wednesday morning, snow level above 8,000 ft. Wednesday afternoon, then air freezing level 13,000 ft. rising to 14,000 ft. Wednesday night and Thursday afternoon.
- highs 59-70 lows 42-48.