This is an archived article that was published on sltrib.com in 2016, and information in the article may be outdated. It is provided only for personal research purposes and may not be reprinted.

The week will end with what may be northern Utah's last, best burst of soft autumn sunshine before the nip of mornings stretch into afternoons, beckoning the inevitable onset of winter.

After Thursday shivered in with wet, morning lows in the upper-30s, the mercury headed toward highs in the upper-50s along the Wasatch Front. Friday, under clear, sunny skies, promised highs flirting with 70 degrees, and by Saturday afternoon temperatures a few degrees warmer were forecast.

So, bask in the fleeting treasure that is October shirt-sleeve weather. All too soon it will be history, like the leaves glowing gold and amber before falling to their annual rest.

"Change is a measure of time and, in the autumn, time seems speeded up," naturalist and writer Edwin Way Teale once wrote. "What was is not and never again will be; what is is change."

Southern Utahns, while enduring the goosebumps of chilly dawns in the upper-40s, were forecast to see high temperatures ranging from Thursday's mid-70s to the low- to mid-80s Friday and Saturday, respectively. All of that comes with clear, sunny skies, the National Weather Service noted.

The Utah Division of Air Quality was doing its part, too, ushering in a glorious summery weekend: statewide, air quality was rated as "green," or healthy over the next few days.

The Intermountain Allergy & Asthma website reported that sagebrush and mold continued to plague allergy suffers, earning "very high" and "high" grades, respectively, on its pollen index as of Thursday.

For more extensive forecast information, visit The Salt Lake Tribune's weather page at: http//www.sltrib.com/weather/.

Twitter: @remims