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An upper level trough of low pressure (“U” shaped area)  along the coast continues to funnel more moisture our way. One frontal system moved southward into Nevada away from us while a second one is moving through early today. You still might want to keep an umbrella handy just in case that slight chance of rain falls on you while you are Trick-or-Treating.

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Advisories: NONE AT THIS TIME.

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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: Mostly cloudy with a good (50%) chance of showers this AM, partly cloudy with a slight (20%) chance of showers this afternoon, mostly cloudy with a slight (20%) chance of rain late tonight and Monday, then a (30%) chance of rain Monday night highs 60-66 lows 44-47. Mostly cloudy Tuesday, partly cloudy Tuesday night with areas of patchy fog late and Wednesday AM, mostly sunny Wednesday afternoon, mostly clear at night with fog late and early Thursday AM, mostly cloudy Thursday afternoon, cloudy with a (30%) chance of rain Thursday night, rain likely (60%) Friday, mostly cloudy with a (40%) chance of showers Friday night and a (40%) chance of rain Saturday  highs 64-54 lows 44-40. (seasonal averages highs 58 low 39)

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Forecast for the Umpqua Basin including, Roseburg: Mostly cloudy with  rain likely (60%) this AM,  a (40%) chance of showers this afternoon and evening, a slight (20%) chance of showers late tonight with fog late, AM and late night fog Monday and Monday night, with a slight (20%) chance of rshowers in the afternoon and at night then fog late highs 60-66 lows near 50.  Mostly cloudy with patchy fog Tuesday AM, partly cloudy Tuesday afternoon, partly cloudy Tuesday night through Wednesday night with areas late night and early AM fog, AM fog then mostly cloudy Thursday, a slight (20%) chance of rain Thursday night, AM fog with rain likely (60%) Friday, a (40%) chance of chance of rain Friday night,  and mostly cloudy with a good (50%) chance of rain Saturday highs 68-53 lows 49-44. (seasonal averages high 62 low 42)

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Forecast for the South Oregon Coast including Coos Bay and North Bend:  Mostly cloudy today with a good (50%) chance of AM rain along the shore, AM rain likely (60%) inland,  then a slight (20%) chance of showers in the afternoon, a slight (20%) chance of showers this evening, a slight (20%) chance of rain and breezy (winds: S 15-25 mph gusts to 40 mph) late at night with patchy fog late, AM fog, mostly cloudy and breezy Monday a slight (20%) chance of showers at the shore in the afternoon and night, then areas of fog late Monday night highs 57-65 lows near 50. AM and late night patchy fog, then partly cloudy in the afternoon Tuesday through Wednesday night,  AM fog then mostly cloudy Thursday with a (30%) chance of rain, mostly cloudy with a good (50%) chance of rain Thursday night, patchy fog again Friday AM, rain likely (60%) Friday afternoon, a good (50%) chance of showers Friday night, and mostly cloudy with a good (50%) chance of rain Saturday highs 66-54 lows 50-44. (seasonal averages high 60 lows 44).

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Forecast for the Cascades of Lane County:  Mostly cloudy with rain and snow showers likely (60%) this AM,  partly cloudy with a good (50%) chance of rain and snow showers in the afternoon (1 in. of snow), a (40%) chance of rain mainly to the North tonight and Monday, mostly cloudy Monday evening with a (30%) chance of evening rain then rain likely (60%) late at night mainly to the North again snow level 5,500 ft. in the afternoon, free air freezing level 7,500 ft. rising to above 8,000 ft. in the South tonight, snow level above 8,000 ft. Monday and Monday night highs 43.49 lows 35-39.  Partly cloudy with a slight (20%) chance of rain mainly North Tuesday, partly cloudy Tuesday night, mostly sunny Wednesday, mostly clear Wednesday night,  mostly cloudy Thursday, rain likely (60%) Thursday night and Friday, mostly cloudy with a slight (20%) chance of showers Friday night, and a good (50%) chance of rain Saturday snow level above 8,000 ft. Tuesday, free air freezing level 13,000 ft. Tuesday night and Wednesday, 12,000 ft. Wednesday night, 11,000 ft. Thursday, snow level 8,000 ft. Friday, and 6,000 ft. Friday night and Saturday  highs 60-46  lows near 34 cooling to near 30 Saturday.

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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.