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A high pressure ridge (“Arch” shape) is moving over the Pacific Northwest and a trough of low pressure (“U” shape) will move in behind it and start sending some serious moisture our way. A couple of cold fronts move into the area next week.
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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: Partly cloudy tonight and Monday AM, becoming mostly cloudy with a slight (20%) chance of showers Monday afternoon, a good (50%) chance of rain Monday night (0.10 in. of rain possible, a (30%) chance of AM rain Tuesday, showers likely (60%) in the afternoon (0.25 in. of rain possible), a (40%) chance of showers Tuesday night (0.10 in. of rain possible), mostly cloudy with a (30%) chance of showers Wednesday and Wednesday evening, then a slight (20%) chance of showers late Wednesday night lows 47-56 cooling to near 50 Wednesday night highs 81-70. A slight (20%) chance of AM showers Thursday, then a mix of clouds and sun in the afternoon, partly cloudy Thursday night, a mix of clouds and sun Friday, then partly cloudy Friday night through Sunday highs 73-79 lows near 50. (seasonal averages high 76 low 49)
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The Pollen forecast for the Eugene/Springfield Area is for weeds and trees to be low, and Grass to stay to very high. (Provided by Allergy and Asthma Research Group)
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Forecast for the Umpqua Basin including Roseburg: Mostly clear this evening, partly cloudy tonight, sunny in the AM, partly cloudy Monday AM, mostly cloudy in the afternoon with a (30%) of rain, becoming mostly cloudy with a slight (20%) chance of showers Monday night (0.25 in. of rain possible), mostly cloudy with rain and a slight (20%) chance of thunderstorms Tuesday AM, rain likely (60%) in the afternoon (0.25 in. of rain possible), a (30%) chance of showers Tuesday night, mostly cloudy Wednesday AM, partly cloudy in the afternoon with a slight (20%) chance of showers, partly cloudy Wednesday evening, then mostly cloudy Wednesday night with a slight (20%) chance of showers lows 52-62 cooling to 55 Wednesday night highs 82-70. Mostly cloudy with a slight (20%) chance of showers Thursday, mostly cloudy Thursday night, then partly cloudy Friday through Sunday highs 73-86 lows near 54. (seasonal averages high 81 low 52)
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Forecast for the South Oregon Coast including Coos Bay and North Bend: Mostly clear this evening, partly cloudy tonight with patchy late night and early AM fog, mostly cloudy Monday with a slight (20%) chance of AM showers, rain in the afternoon and late Monday night (0.60 in. of rain possible), rain likely (60%) Tuesday (0.20 in. of rain possible), mostly cloudy with a slight (20%) chance of evening coastal showers, partly cloudy with a slight (20%) chance of inland showers Tuesday night, partly cloudy with a slight (20%) chance of showers Wednesday AM, then becoming mostly cloudy with a slight (20%) chance of showers Wednesday night lows 53-59 cooling back to 53 Wednesday night highs 68-60. Mostly cloudy with a (30%) chance of showers Thursday, just mostly cloudy Thursday night and Friday, then partly cloudy Friday night through Sunday highs 65-68 lows near 54. (seasonal averages high 65 low 51).
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Forecast for the Cascades of Lane County: Partly cloudy tonight and Monday AM, showers likely (60%) with a slight (20%) chance of thunderstorms Monday afternoon and evening, rain likely (60%) late Monday night (0.25 in. of rain possible, more in thunderstorms), AM rain likely (60%) Tuesday, showers likely (60%) with a (20%) chance thunderstorms in the afternoon (0.50 in. of rain possible, more in thunderstorms), showers likely (60%) with a slight (20%) chance of thunderstorms in the evening, showers likely (60%) late Tuesday night (0.25 in. of rain possible, more in thunderstorms), mostly cloudy with a (30%) chance of AM showers, then a (40%) chance of showers and a slight (20%) chance of thunderstorms Wednesday afternoon and evening, and partly cloudy Wednesday night with a slight (20%) chance of showers late at night free air freezing level 13,000 ft. tonight, snow level above 8,000 ft. Monday through Wednesday night lows 40-46 cooling to near 40 Wednesday night highs 73-56. A slight (20%) chance of showers Thursday AM, a mix of clouds and sun Thursday afternoon, partly cloudy Thursday night with a slight (20%) chance of showers, just partly cloudy Friday and Friday night, then mostly sunny Saturday and Sunday, partly cloudy Saturday night snow level above 8,000 ft. Thursday and Thursday night, free air freezing level 13,000 ft. Friday, then rising to 14,000 ft. Friday night and Saturday, 15,000 ft. Saturday night and back to 14,000 ft. Sunday highs 60-69 lows near 42.
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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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Get your local Eugene /Springfield news on-line at EugeneDailyNews.com.
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