Deteriorating weather conditions are expected across northern and western parts of the state today, as a cold front moves in from southern Montana.  Central and southern parts of Wyoming will remain mostly dry and mild through late afternoon.  Expect periods of rain and snow to move in late this afternoon through tonight, moving into central, eastern and southern regions overnight into Tuesday morning.  Periods of light snow will not only affect the western and northern mountains, but will set up across northeast, east-central and toward southeast Wyoming Tuesday morning through afternoon (moving in a northwest to southeast direction).  Accumulations are expected for most areas through Tuesday afternoon.  Winds will likely be gusty at times later today and tonight.  Temperatures will turn colder on Tuesday, with highs in the 20's to 30's statewide.

A flip-flop back to sunshine and mild temperatures occurs Wednesday into Thursday.  This may cause areas of melting and minor flooding across western and central parts of the state.