Southwestern flow, a meandering low, and cold front approaching will all contribute to showers and storms mainly for the eastern Idaho/western Wyoming. Snow levels dropping from 7000 ft/central mountains to 6000ft closer to the weekend. Highs in mid 70's today for the valley, lows in the 40's. Significant temp drop tomorrow as shower chances ramp up 50-60% Fri/Sat. Highs tomorrow - lower 60's. Chilly/stormy/windy weekend kickoff is expected.
SW winds today 10-30mph gusts, especially gusty around thundershowers later.
Jeff Roper, First Alert Weather