_______________
________________
A high pressure ridge (See “Arch” shape) is moving away from us while another trough of low pressure (See “U” shape offshore) will replace the ridge and a cold front moved through to cool us down as the cold air drops down from aloft.
Note: With the changing weather pattern we will see a drastic drop in temperatures over the holiday weekend particularly in the foothills and mountains where temperatures will be in the 30s and near freezing in some locations. Be prepared for cold temperatures at night and possible precipitation if you will be camping or engaging in any outdoor activities.
_______________
Advisories: NONE AT THIS TIME.
________________
Here are your detailed forecasts. **
_________________
Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: A mix of clouds and sun and cooler this afternoon, and partly cloudy tonight, a mix of clouds and sun Monday (Labor Day), partly cloudy with a slight (20%) chance of evening showers, mostly cloudy with a (40%) chance of showers late Monday night highs 70-75 lows 40-47. Mostly cloudy with a (40%) chance of showers Tuesday and Tuesday evening, a slight (20%) chance of showers late Tuesday night and Wednesday, mostly cloudy in the evening, partly cloudy with a slight (20%) chance of showers late Wednesday night through Thursday night highs 67-75 lows 52-45. A mix of clouds and sun Friday with a slight (20%) chance of showers in the morning, partly cloudy Friday night and a mix of clouds and sun Saturday highs 75-77 low 50. (seasonal averages high 80 low 49)
_________________
Forecast for the Umpqua Basin including, Roseburg: Mostly cloudy this AM, partly cloudy in the afternoon, mostly cloudy in the evening and partly cloudy tonight and Monday AM (Labor Day), then mostly cloudy in the afternoon, mostly cloudy with a slight (20%) chance of showers late Monday night highs 72-76 lows 44-54 . Mostly cloudy with at (20%) chance of showers Tuesday through Wednesday, mostly cloudy with a slight (20%) chance of showers Wednesday night through Saturday highs 70-74 lows 54-49. (seasonal averages high 84 low 52)
_______________
Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly cloudy today through Monday (Labor Day) highs 60-64 low 46. Mostly cloudy Monday night with a (30%) chance of showers at the shore and a slight (20%) chance of showers late at night inland, mostly cloudy with a good (50%) chance of showers Tuesday, (40%) Tuesday night, and (30%) Wednesday, then mostly cloudy with a slight (20%) chance of showers Wednesday night through Saturday lows 53-50 highs 60-65. (seasonal averages high 68 low 52).
_________________
Forecast for the Cascades of Lane County: Mostly cloudy with a (20%) chance of showers this AM, partly cloudy with a slight (20%) chance of afternoon and evening showers today, a mix of clouds and sun in the AM, mostly cloudy with a slight (20%) chance of afternoon and evening showers Monday (Labor Day), then a (20%) chance of showers Monday night through Tuesday night snow level 8,000 ft. then above 8,000 ft. Sunday night through Tuesday night highs 58-62-54 lows 34-40. AM clouds then a mix of clouds and sun Wednesday with a (30%) chance of showers, partly cloudy with a (30%) chance of evening showers, then a slight (20%) chance of showers late Wednesday night snow level 7,000 ft. Wednesday and 8,000 ft. Wednesday night high 50 low 36. Partly cloudy Thursday and Thursday night with a slight (20%) chance of showers, a mix of clouds and sun Friday with a slight (20%) chance of AM showers, partly cloudy Friday night, then a mix of clouds and sun Saturday snow level above 8,000 ft. Thursday through Friday, free air freezing level 10,000 ft. Friday night and Saturday highs 60-55 lows 38-43.
_________________
**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.