Here is my weekly weather quiz question. What is a “Sling Psychrometer?” Please remember to post your answer as a comment by clicking on “no comments /comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good luck.

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An upper level high (Shaded “Arch” shape with blue arrows) will keep us in sunshine and warmer temperatures for the long Memorial Day holiday weekend. A frontal system will be moving toward the Pacific Northwest Wednesday returning the chance of showers by Thursday. Another frontal system is shown well offshore next Friday.

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Air Quality Index:

Eugene-Springfield: The Air Quality Index is 40 in the Good category measuring Particulate Matter.

Oakridge: The Air Quality Index is 14 in the Good category measuring Particulate Matter.

Cottage Grove: The Air Quality Index is 41 in the Good category measuring Particulate Matter.

Data courtesy of Lane Regional Air Protection Agency (LRAPA).

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Advisories: None At This Time.

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Home Wood Heating Advisory:

Eugene-Springfield: GREEN – Burning is Allowed.

Oakridge: GREEN – Burning is Allowed.

*Note: Pellet stoves may be used anytime if they produce no visible emissions.

Advisory Courtesy of Lane Regional Air Protection Agency (LRAPA).

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Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:

• Partly cloudy with a slight (20%) chance of evening showers, just partly cloudy late tonight,
• Partly cloudy and a bit warmer Saturday and in the evening, mostly cloudy late Saturday night,
• A slight (20%) chance of AM showers, a mix of clouds and sun and a bit warmer Sunday afternoon, partly cloudy Sunday night,
• AM clouds, mostly sunny and a bit warmer Monday (Memorial Day), then mostly clear Monday night.
• lows 45-50 cooling back to 45 Monday night highs 70-76.
• Mostly sunny and a bit warmer Tuesday, mostly clear at night,
• Mostly sunny Wednesday AM, partly cloudy in the afternoon, partly cloudy Wednesday night,
• Partly cloudy with a slight (20%) chance of showers and cooler Thursday afternoon, partly cloudy with a slight (20%) chance of showers Thursday night and Friday AM, then just partly cloudy Friday afternoon.
• highs 86-79 lows 49-54. (seasonal averages high 69 low 45.)

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Eugene-Springfield Pollen Count:

Grass………. High (140)

Trees……….  Low (7)

Last Counted: 5/27/16

Data Courtesy of Oregon Allergy Associates.

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Forecast for Roseburg:

• Mostly clear this evening, partly cloudy late tonight and Saturday AM, mostly sunny and a bit warmer in the afternoon, mostly clear in the evening, partly cloudy late Saturday night through Sunday night,
• Mostly sunny and a bit warmer Monday (Memorial Day), then mostly clear at night.
• lows 47-50 highs 76-83.
• Mostly sunny and a bit warmer Tuesday, mostly clear at night,
• Partly cloudy and a bit warmer Wednesday and Wednesday night,
• Then partly cloudy with a slight (20%) chance of showers and a bit cooler Thursday through Friday.
• highs 84-92 cooling to 85 Thursday and Friday lows 56-54. (seasonal averages high 72 low 49).

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Forecast for The South Oregon Coast Including Coos Bay and North Bend:

• Mostly clear tonight,
• Sunny and a bit warmer Saturday, mostly clear in the evening, partly cloudy late Saturday night,
• AM clouds, partly cloudy Sunday afternoon and at night,
• Mostly sunny and a bit warmer Monday (Memorial Day), then mostly clear at night.
• lows 49-52 highs 63-66.
• Mostly sunny and a bit warmer Tuesday, mostly clear Tuesday night,
• Partly cloudy and cooler Wednesday and at night,
• Partly cloudy with a slight (20%) chance of showers Thursday afternoon through Friday.
• highs 72-64 lows 53-50 warming to 54 Thursday night. (seasonal averages high 60 low 49)

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Forecast for the Cascades in Lane County:

• Partly cloudy tonight through Sunday night,
• Mostly sunny and a bit warmer Monday (Memorial Day), then mostly clear at night.
• free air freezing level 7,000 ft. rising to 8,000 ft. late tonight, 8,000 ft. rising to 9,000 ft. Saturday, 10,000 ft. Saturday night and Sunday, 10,000 ft. rising to 11,000 ft. late Sunday night, 11,000 ft. rising to 12,000 ft. Monday, then 12,000 ft. Monday night.
• lows 33-36 cooling back to 33 Sunday night warming to 35 Monday night highs 58-66.
• Mostly sunny and a bit warmer Monday, mostly clear Monday night,
• Mostly sunny and a bit warmer Tuesday, mostly clear at night,
• Mostly sunny Wednesday AM, partly cloudy and a bit warmer in the afternoon, then partly cloudy Wednesday  night,
• Partly cloudy with a slight (20%) chance of showers and a bit cooler Thursday afternoon, mostly cloudy with a slight (20%) chance of evening showers, then partly cloudy with a slight (20%) chance of showers late Thursday night and Friday.
• free air freezing level 12,000 ft.rising to 13,000 ft. late Tuesday afternoon, 13,000 ft. Tuesday night through Wednesday night, then snow level above 8,000 ft. Thursday through Friday.
• highs 74-80 cooling to 70 Friday lows 45-50.

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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 and Lane County news on-line at eugenedailynews.com.

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