Frosty Start, Chilly with some showers around

Frost Advisory through 9am for Snake River Plain, and chilly air in place with rotating moisture from the east gives mainly mountain showers, some rain/thunder possible, with snow and highs from 49 in Jackson Hole to 57 in Idaho Falls and Salmon. Cold , freeze warning 3am to 9am Tuesday for upper Snake Plain tonight and 31 overnight. The sun will shine tomorrow and we'll return to the 60's.

Jeff Roper, First Alert Weather