A frontal boundary will move over northern and western parts of the state today, bringing more clouds and the chance for developing showers and thunderstorms.  Temperatures will begin to turn cooler, while winds increase as well.  Eastern and southern parts of the state will be warm and windy into this afternoon.  Southern Wyoming will have the least chance for afternoon and evening showers or thunderstorms.  Northern and western Wyoming have a good chance for developing rain showers as that front moves in.

By tomorrow (Tuesday) and Wednesday, temperatures will turn much cooler across Wyoming, as that front becomes stationary.  The chance for rain and thunderstorms will increase across all of Wyoming, with rivers beginning to rise further and possible slides and flooding across the state's mountains.