Peerless, Montana Weather Forecast Discussion

700
FXUS65 KGGW 291112
AFDGGW
Area Forecast Discussion
National Weather Service Glasgow MT
512 AM MDT Mon Sep 29 2025
.DISCUSSION...
KEY MESSAGES:
- Warm temperatures and dry weather are largely expected through
  Tuesday.
- As the ridge breaks down, chances for precipitation begin by
  Tuesday night into the second half of the week.
- There is moderate confidence of a cool down occurring by next
  weekend.
WEATHER PATTERN OVERVIEW:
The upper ridge will remain over the northern plains through at
least Tuesday. Temperatures will be above average 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 southwest flow aloft.
On Wednesday afternoon and Thursday night, a few weak shortwave
troughs will lift across the region, pushing a cold front and the
possibility of showers through eastern Montana. Temperatures will
begin to cool heading into the weekend. There is a change in
pattern for the upcoming weekend for cooler than average weather,
but there remains high uncertainty in the details of precipitation
opportunities.
FORECAST CONFIDENCE & DEVIATIONS:
Used manual edits and NBM90 to increase winds through Tuesday
afternoon. No other deviations.
&&
.AVIATION...
VFR. Skies will remain clear to partly cloudy today into tonight
with the upper ridge in place.
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