538 AWUS85 KGGW 270843 RWSGGW Regional Weather Summary National Weather Service Glasgow MT 245 AM MDT Mon Aug 27 2018 This is the Regional Weather Summary for the eastern two thirds of Montana, Southern Saskatchewan, and Western North Dakota. An upper level trough of low pressure will move through the region today and tonight with widespread showers over and isolated most of the region. Highs will only be 55 to 60 today. Lows will be in the 40s in most areas tonight with upper 30s over Central Montana. Chances for rain diminish from west to east across the region on Tuesday as high pressure builds in from the west. Highs will be in the 60s. $$ weather.gov/glasgow