National Weather Service United States Department of Commerce

Monsoon Activity Continues in the Rockies and High Plains; Heat Builds in the West

Monsoon moisture will continue to bring a threat of heavy rain and flash flooding from the Intermountain West to the High Plains. Complex terrain, burn scars, and urban areas will be especially vulnerable to flooding. Heavy rain along a nearly stationary front in the South and Southeast could produce flash flooding. Dry lightning in Oregon could initiate new fires. Read More >

Hazy sunshine due to wildfire smoke will start the work week for northeast Wyoming and western South Dakota. Highs today will be in the lower 80s to lower 90s. Slightly warmer weather is expected for Tuesday and Wednesday with highs in the mid 80s to mid 90s. Isolated thunderstorms may occur over northeast Wyoming and the Black Hills late Tuesday and then over western South Dakota late Wednesday.