Unseasonably warm weather is due to usher out the month of May, but temperatures are not yet near record-setting.
Wednesday — like Tuesday — was forecast to hover around 90 degrees along the Wasatch Front, well above the 76-degree norm for this time of year, but well short of a 1997 Salt Lake City record temperature of 95 set in 1997. (Tuesday's readings likewise were far below history-making, with a 97-degree mark in 2003 still reigning).
By Wednesday afternoon and evening, however, storm clouds will begin to build and some wind-driven scattered showers were possible. Thursday will begin sunny before giving way to late-day rain, with temperatures for the Salt Lake and Tooele valleys in the upper-80s.
The National Weather Service issued a Flood Warning for the Logan River, where runoff was expected to slop over the banks by 11 p.m. Tuesday.
Meanwhile, southern Utah will bake. Wednesday's highs, under partly cloudy skies, will soar into the mid-90s, down a few degrees from Tuesday's forecast. Thursday will dawn partly cloudy, bringing low-90s to Utah's Dixie.
Again, while hot, none of those predicted temperatures were expected to challenge daytime record highs for the redrocks and high deserts of the south. Tuesday's St. George record for the date is 103 degrees, while Wednesday's is 102, both set in 1994.
Air quality continues to be compromised statewide. Cache County ("green," or healthy) as the sole exception to the "yellow," or moderate particulate pollution levels forecast by the Utah Division of Air Quality through the midweek.
The Intermountain Allergy & Asthma website noted grass was "very high," oak and mold "high," mulberry "moderate" and other allergens "low" on its pollen index as of Tuesday.
For more extensive forecast information visit the Tribune's weather page at http://www.sltrib.com/news/weather/.
remims@sltrib.com
Twitter: @remims
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