Area Forecast Discussion
Issued by NWS Glasgow, MT
Issued by NWS Glasgow, MT
548 FXUS65 KGGW 211937 AFDGGW Area Forecast Discussion National Weather Service Glasgow MT 137 PM MDT Thu Aug 21 2025 .DISCUSSION... KEY MESSAGES: - Mainly dry weather is expected for several days with temperatures between near normal to 10 degrees below normal. WEATHER PATTERN OVERVIEW: A cold front has now moved well east into the Dakotas this afternoon. Some overrunning clouds and an isolated shower remain over the southeast zones. The big change recently has been the much cooler air, with temperatures this afternoon about 20-30 degrees cooler than this time yesterday. With an upper low over south-central Canada and an upper ridge building over the Pacific Northwest, NW flow aloft will prevail the next several days with mainly dry weather and temperatures that will vary from near normal to around 10 degrees below normal. Tonight and Friday, there will be a wave moving along the MT/WY border that will bring chances for showers and thunderstorms to southern Montana. The precipitation from this system is expected to stay south of the forecast area at this time but an isolated shower over the southern zones cannot be ruled out. Significant Canadian nor Northern Rockies smoke is not expected through the period. FORECAST CONFIDENCE & DEVIATIONS: No changes made to the NBM at this time. && .AVIATION... UPDATED: 1940Z. FLIGHT CAT RANGE: VFR. DISCUSSION: Scattered clouds with an isolated shower in the KGDV area early this afternoon should diminish by evening. Some mid-high clouds may return early Friday in KGDV and points south and west but any showers should remain to the south. WINDS: 10 kts or less, mainly from the N or NW tonight. Increasing from the NW Friday to about 15 kts with higher gusts. TFJ && .GGW WATCHES/WARNINGS/ADVISORIES... None. && $$ weather.gov/glasgow