PM Update: A touch of warmth for summer's final day Friday Today was simply magnificent with brilliant blue skies and about perfect afternoon temperatures in the low-to-mid 70s. A modest chill returns tonight before temperature rebound, cresting above 80 on astronomical summer's last day. Through Tonight: A very pleasant evening as temperatures slowly drift back through the 60s. Most spots are into the 50s by midnight. By dawn, lows range from the jacket-demanding mid-to-upper 40s in the cooler suburbs to the mid-to-upper 50s downtown. Skies are clear and winds are still. Friday: The mercury mounts a major recovery following the crisp early morning hours. With abundant sunshine and the return of light winds from the south, highs climb to above average levels, ranging from 79-84. Pollen: Trees and grasses are LOW, weeds are LOW-MODERATE and mold spores are MODERATE. New cloud type?: A contingent of meteorologists and sky enthusiasts are lobbying for the official classification of a not yet recognized cloud type. USA Today's Doyle Rice reports the cloud is called "undulatus asperatus" which translates to agitated waves from Latin. Read the full article.