


Area Forecast Discussion
Issued by NWS Glasgow, MT
Issued by NWS Glasgow, MT
879 FXUS65 KGGW 301930 AFDGGW Area Forecast Discussion National Weather Service Glasgow MT 130 PM MDT Mon Jun 30 2025 .DISCUSSION... KEY MESSAGES: - Hot and mainly dry weather is expected over the next few days. - A more active weather pattern is expected to emerge for the second half of the week extending into the Independence Day holiday period with daily chances for showers and thunderstorms returning. WEATHER PATTERN OVERVIEW: An upper ridge will be building across the region over the next few days, bringing hot and dry weather through midweek. Wednesday is expected to be the hottest day, with high temperatures in the mid 90s to lower 100s. These temperatures are already pushing toward Heat Advisory levels with moderate to major heat risk. Temperatures could push slightly higher with the 50th-75th percentile of the NBM indicating more widespread readings at or above 100. Thursday afternoon looks to be a few degrees cooler due to increased cloud cover. Ensembles show upper ridging sliding east ahead of the next low pressure system for the midweek. This will set up a more active weather pattern with increased low-level moisture heading into the 4th of July holiday. In short, expect daily chances for thunderstorms to return in the afternoon and evening hours starting Wednesday night. Temperatures will also begin trending cooler toward average. FORECAST CONFIDENCE & DEVIATIONS: The NBM was used for the forecast population with minimal deviation needed to capture expected trends. Confidence is high on mainly warm and dry weather through the next couple of days, while currently medium for the occurrence of triple digit heat midweek. Confidence is described as growing on increasing chances for thunderstorms to return each day starting midweek. && .AVIATION... Flight Category: VFR Discussion: High pressure across the area will mean mostly clear to partly cloudy skies, with little to no daytime convective development. && .GGW WATCHES/WARNINGS/ADVISORIES... None. && $$ weather.gov/glasgow