A trough of Low Pressure ( the “U” shaped shaded area now just onshore) will slowly slide eastward giving us rain. The latest frontal system has pushed its way into Oregon. Low pressure will ride up the front side of the trough and that means one more day of wet weather then a break.

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Advisories:   A HIGH SURF ADVISORY IS IN EFFECT IUNTIL 9  PM WEDNESDAY FOR THE SOUTH CENTRAL AND SOUTH OREGON COAST.

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Forecast for the Central and  Southern Willamette Valley: Mostly cloudy with a slight (20%) chance of showers this evening  & increasing rain chances tonight low 45 . Morning rain Wednesday turning to showers in the afternoon high near 50. A (40%) chance of showers Wednesday night low 40. Patchy AM fog then a mix of clouds and sun with a slight (20%) chance of showers Thursday and partly cloudy with patchy fog Thursday  night high near 50 low 38. A mix of clouds and sun Friday morning with increasing afternoon clouds high near 52 . Mostly cloudy with  a good (50%) chance of rain returning by Friday evening then rain overnight low near 40. Mostly cloudy Saturday with a good (50%) chance of showers and rain likely (60%) Saturday night high 49 low 38. Mostly cloudy rain likely (60%) Sunday through Tuesday  highs in the upper 40s lows in the upper 30s.

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Forecast for the Umpqua Basin including Roseburg: Mostly cloudy with a good (50%) chance of rain this evening then rain late tonight  low 46. AM rain with afternoon showers Wednesday  and a (30%) chance of showers at night with patchy fog late high 55 low near 38.  AM fog and clouds Thursday then partly cloudy in  the afternoon high 50. Cloudy with patchy fog late Thursday night  low 39. AM clouds and fog Friday then cloudy high and rain likely (60%) late Friday afternoon and overnight high 49 low 40. Cloudy with a (50%) chance of rain Saturday and likely (60%) Saturday night high 52 low 37. Rain likely (60%) Sunday through Monday (Martin Luther King, Jr. Day) highs near 50 low near 40 Sunday night . Cloudy with rain Monday night and Tuesday low 38 high 47.

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Forecast for the South Oregon Coast: Rain and breezy this evening and tonight with a slight chance of isolated thunderstorms along the coast late, rain inland low 50 . Mostly cloudy Wednesday morning with rain and thunderstorms along the coast , morning rain then afternoon thunderstorms possible inland in the afternoon high 55.  Mostly cloudy with a (30%) chance of showers and fog late at night low 43. AM fog, mostly cloudy with a slight (20%) chance of showers Thursday and  cloudy with fog late Thursday night high 54 low 44. Areas of AM fog then mostly cloudy Friday high 52. Rain and breezy Friday night low 45. Rain likely (60%) Saturday high 52. Cloudy with rain likely (60%) Saturday night near 44.  Cloudy, rain likely (60%) and breezy Sunday and Sunday night high 55 low 47. Rain Monday (Martin Luther King, Jr. Day) high 54. Rain likely (60%) Monday night and rain Tuesday low 46 high 50.

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Forecast for the Cascades of Lane County: Mostly cloudy with a good (50%) chance of showers this evening then rain increasing later snow level 5,000′ 2-6″ of snow.  Rain Wednesday morning then afternoon showers snow level 5,500′ falling to 4,500′ 5-9″ of snow. Showers Wednesday evening then decreasing late snow level 5,000′ 4-6″ of snow. Mostly cloudy with a slight (20%) chance of showers Thursday morning snow level 5,000′. Partly cloudy Thursday night, free air freezing level 7,000′. A mix of clouds and sun Friday free air freezing level rising to 8,000′. Becoming cloudy Friday night with rain developing late snow level 6,500′ . Mostly cloudy Saturday showers likely (60%) and Saturday night snow level 4,000′. Rain and snow likely (60%) Sunday and Sunday night snow level 4,500′ falling to 4,000′. Rain and snow likely (60%) Monday (Martin Luther King, Jr. Day) through Tuesday snow level  holding at 4,000′.

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Here is my weather quiz question for this week. On average how much pollen is released into the atmosphere in the United States each year? Your answer should be in the number of pounds per year. Please place your answer as a comment at the bottom of this page. The first person to post the correct answer will win one free week of personalized forecasts tailored to your needs. Good luck.

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