Across southeast Wyoming today, temperatures will be cool to mild.  The coolest temperatures will be found over the far southern regions and higher terrain, with highs in the 40's to 50's.  To the north, between Cheyenne and Casper, temperatures will rise into the 50's and low 60's.  Expect partial sunshine at times today, but developing rain showers are expected.  Showers will become scattered into this afternoon, and mostly across the far south.  You may even hear a rumble of thunder or two with any shower activity.