This is an archived article that was published on sltrib.com in 2012, and information in the article may be outdated. It is provided only for personal research purposes and may not be reprinted.

Utah's late-week weather picture, as Humbert Wolfe might forecast it: "The air is wild with leaves, We have had our summer evenings, now for October eves!"

Northern Utah's evenings are indeed turning chilly, with overnight temperatures in the mid- to upper-40s predicted Friday after a daytime high in the mid-60s to low-70s.

Southern Utahns won't need to don their light jackets, yet: Friday's highs are forecast to be near 80 degrees, while overnight lows will be in the low- to mid-50s.

The exception will be southeastern Utah, where a corner of land from Blanding to Bluff was under a free warning.

Throughout the state, skies are predicted to be clear and sunny. Air quality has garnered a "Green," or healthy grade throughout Utah, according to the Division of Air Quality.

Salt Lake City's high Friday is to hit 72 degrees, up from Thursday's forecast for 65; Ogden looks for 69 and 63 degrees, respectively; Provo 73 and 67; Logan 66 and 63; Wendover 65 and 61; Duchesne 70 and 63; Cedar City 76 and 71; St. George 83 and 81; and Moab 73 and 67 degrees.