Mosby, Montana Weather Forecast Discussion

562
FXUS65 KGGW 281118
AFDGGW
Area Forecast Discussion
National Weather Service Glasgow MT
518 AM MDT Sun Sep 28 2025
.DISCUSSION...
KEY MESSAGES:
- Warm temperatures and dry weather are largely expected over the
  next few days, at least through Tuesday.
- As the ridge breaks down, chances for precipitation begin by
  Tuesday night into the second half of the week.
WEATHER PATTERN OVERVIEW:
The upper ridge over the northern plains will amplify during the
next few days. Temperatures will increase through Tuesday as the
upper low of the desert southwest opens up and lifts north. With
the weakening of this low and the movement onshore of the east
Pacific trough, moisture will begin to increase across the region
with the southwest flow aloft.
Mid week another weak shortwave lifts across the region, pushing a
cold front and the possibility of showers through eastern Montana.
The remainder of the week will features cooler temperatures and
slight chances of rain as the Pacific trough moves onshore.
FORECAST CONFIDENCE & DEVIATIONS:
Ensemble consensus is fairly robust lending to high forecast
confidence for warm and dry weather through Tuesday, though lower
confidence exists on precipitation chances with increasing spread
among ensemble members for the middle of the week and beyond.
Overall therefore kept the forecast in line with NBM for this
cycle.
&&
.AVIATION...
VFR. Skies will remain clear to partly cloudy overnight with the
upper ridge in place. Smoke from wildfires may move in from the
southwest today, but is not expected to have much impact on
visibility.
EQUIPMENT: KSDY AMD NOT SKED will remain in place until the METARs
comms issue is repaired.
&&
.GGW WATCHES/WARNINGS/ADVISORIES...
None.
&&
$$
weather.gov/glasgow

NWS GGW Office Area Forecast Discussion