This is an archived article that was published on sltrib.com in 2015, and information in the article may be outdated. It is provided only for personal research purposes and may not be reprinted.

In northern Utah's valleys, the frost is definitely on the pumpkin. As for the region's mountains, think of that gourd as a jack-o'-lantern, sliding pell-mell down peaks freshly laden with snow.

Yes, snow. The National Weather Service's Thursday prediction calls for the white stuff along the Wasatch and Uinta mountain ranges as low as 6,000 feet elevation, with snow accumulating around at 7,000 feet and above.

Indeed, a Hard Freeze Warning was in effect most of Wednesday morning for the western Uinta Basin, where morning temperatures tumbled into the mid- to upper-20s. A Freeze Warning also was in place through 9 a.m. Wednesday for eastern Utah's Vernal, Jensen, Ballard, Fort Duchesne and Randlett communities with lows in the mid-20s to low-30s.

Autumn was friendlier in the Salt Lake and Tooele valleys, with highs in the low-50s and overnight lows in the mid-40s Thursday after Wednesday's daytime temperatures in the upper-50s. Thursday also was to bring rain showers morning, afternoon and evening.

Southern Utahns also expected rain on Thursday, with highs in the upper-60s, a few degrees cooler than Wednesday's forecast. Lows were predicted to dip into the upper-40s to mid-50s.

Air quality will be in the "green," or healthy heading toward the weekend, according to the Utah Division of Air Quality.

The Intermountain Allergy and Asthma website listed only mold at "moderate" on its pollen index as of Wednesday.

For more extensive weather forecasts, visit the Tribune's weather page at http://www.sltrib.com/weather/.

Twitter: @remims