A series of fast-moving weather systems will move across the state of Wyoming during the second half of the work week.  A weak cool front will also be stalled over northwestern portions of the state during this time.  Expect partly to mostly cloudy skies, breezy to gusty winds, and isolated to scattered showers and thunderstorms throughout the state on Thursday and Friday.  The best chance for precipitation will be across central and eastern Wyoming.  However, any storm that develops could be capable of producing lots of lightning and brief periods of heavy rain.  Temperatures will also be not as hot and closer to average statewide.  Daytime highs will stay in the 70's and 80's, with a few isolated 90's across the far eastern Plains.  A larger, slower weather system and unseasonably strong cool front will approach the region on Saturday.  We will continue to see more clouds than sun, strong winds, and scattered showers and thunderstorms throughout the state for the start of the weekend.  Temperatures, however, will remain very mild to warm and near the average for this time of year.  Expect cooler temperatures and windy conditions on Sunday and Labor Day.