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Advisories: AN AIR STAGNATION ADVISORY IS IN EFFECT UNTIL NOON TODAY FOR CENTRAL DOUGLAS COUNTY, THE EASTERN DOUGLAS COUNTY FOOTHILLS, EASTERN CURRY COUNTY, THE KLAMATH BASIN, NORTHERN AND EASTERN KLAMATH COUNTY, CENTRAL, EASTERN, AND WESTERN LAKE COUNTY, JOSEPHINE COUNTY, AND JACKSON COUNTY.
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A cold front is moving in bringing clouds and a chance of rain, but a high pressure ridge (“Arch” shape on the jet stream) will bring back the fog and freezing fog to start the workweek. An upper air trough of low pressure (“U” shape on the jet stream) will soon after return the clouds and chances for rain.
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Here are your detailed forecasts.**
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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis: Cloudy with patchy fog and a slight (20%) chance of sprinkles and light drizzle and patchy freezing fog this AM, a slight (20%) chance of afternoon showers, mostly cloudy with areas of fog and patchy freezing fog late tonight and Monday AM, a mix of clouds and sun in the afternoon, mostly cloudy with patchy evening fog, areas of fog late Monday night and Tuesday AM, mostly cloudy Tuesday afternoon, then mostly cloudy with a (30%) chance of rain Tuesday night highs 40-43 lows 28-33. Mostly cloudy with a (30%) chance of rain Wednesday, a good (50%) chance of rain Wednesday night, cloudy with a (40%) chance of rain Thursday, mostly cloudy with a (30%) chance of rain Thursday night, a mix of clouds and sun with a slight (20%) chance of rain Friday, then just mostly cloudy Friday night and Saturday highs 43-39 lows 34-30. (seasonal averages high 46 low 34)
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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with a slight (20%) chance of rain with patchy fog this AM (snow level 2,000 ft.), a slight (20%) chance of showers in the afternoon, a slight (20%) chance of rain and snow showers with patchy fog tonight, cloudy with areas of freezing fog Monday AM, mostly sunny in the afternoon, mostly clear in the evening, mostly cloudy with areas of fog Monday night and Tuesday AM, mostly cloudy Tuesday afternoon, a slight (20%) chance of rain Tuesday night highs 42-46 cooling to 42 Tuesday lows 30-35. Mostly cloudy with a (40%) chance of rain Wednesday, rain likely (60%) Wednesday night and Thursday, a (30%) chance of rain and snow showers Thursday night, then just mostly cloudy Friday through Saturday highs 47-42 lows 36-32. (seasonal averages high 48 low 37)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Cloudy with a slight (20%) chance of rain with areas of fog this AM, partly cloudy with a slight (20%) chance of showers this afternoon, mostly cloudy in the evening, partly cloudy with areas of fog late tonight and Monday AM, partly cloudy in the afternoon, mostly clear in the evening, mostly cloudy with areas of fog late Monday night, mostly cloudy Tuesday, then a slight (20%) chance of rain Tuesday night highs 47-50 lows 33-38. Mostly cloudy with a good (50%) of rain Wednesday, rain likely (60%) Wednesday night and Thursday, a (40%) chance of showers Thursday night, partly cloudy with a slight (20%) chance of showers Friday, then just mostly cloudy Friday night and Saturday highs near near 50 lows 40-35. (seasonal averages high 51 low 40).
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Forecast for the Cascades of Lane County: Mostly cloudy with with a slight (20%) chance of sprinkles and light snow today, a slight (20%) chance of snow showers this evening, partly cloudy Monday, partly cloudy Monday night, partly cloudy Tuesday AM, mostly cloudy Tuesday afternoon, then mostly cloudy with a (40%) chance of rain and snow Tuesday night snow level 2,500 ft. today, free air freezing level at the surface late tonight, 3,500 ft. Monday afternoon, 5,000 ft. falling to 4,500 ft. Monday night, 6,000 ft. Tuesday, then snow level 5,000 ft. Tuesday night highs 33-37 lows 22-27. Mostly cloudy with a (40%) chance of rain and snow Wednesday, a good (50%) chance of rain and snow Wednesday night and Thursday, a (40%) chance of rain and snow Thursday night, a mix of clouds and sun with a (30%) chance of rain and snow Friday, partly cloudy Friday night, then a mix of clouds and sun Saturday snow level 4,500 ft. Wednesday and Wednesday night, 3,500 ft. Thursday, at the surface Thursday night, and Friday, free air freezing level at the surface Friday night, then rising to 6,000 ft. Saturday highs 38-33 warming to 38 Saturday lows near 25.
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**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.
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