An upper-level weather system will bring moisture and atmospheric instability to western and northern Wyoming today and Saturday.  Meanwhile, higher pressure will build over the rest of the state through the start of the weekend.  Expect partly sunny skies with a chance for isolated showers and thunderstorms in western and northern Wyoming.  We also cannot rule out an isolated shower or thunderstorm across central portions of the state.  Sunny to mostly sunny skies and mainly dry weather conditions are expected for southern portions of the state during this time.  Winds will be breezy to gusty for much of the state today and Saturday, with winds gusting as high as 30 mph.  Temperatures will also stay very warm to hot and near average statewide, with daytime highs in the 70's and 80's.  The far eastern Plains could also see temperatures in the lower 90's.  By Sunday, high pressure will strengthen over the entire state.  There will also be a limited supply of monsoonal moisture that will be funneled into the region.  We can expect slightly more cloud cover with a few hit or miss showers and thunderstorms for northern and eastern Wyoming.  Conditions stay mainly dry for southwestern and central Wyoming during the end of the weekend.  Temperatures also remain seasonably warm.