603
FXUS65 KGGW 041039
AFDGGW

Area Forecast Discussion
National Weather Service Glasgow MT
339 AM MST Thu Dec 4 2025

.DISCUSSION...

KEY MESSAGES:

- Temperature continues to swing with an unsettled weather
  pattern over the next week.

- Periods of light snow remain likely through the weekend.

WEATHER PATTERN OVERVIEW:
Today and tonight: A warm front is currently making its way east
out of Montana. Forecasted highs today are still warmer than we`ve
seen the past few days, but they have since lowered with further
model runs. A wintry mix of precipitation is possible briefly this
afternoon before becoming fully snow by tonight.

Friday the weekend: A cold front and low pressure system drops
into the region Friday night will bring the highest chance for
1-2" accumulations, mostly along a like southwest of Malta to
Glendive. Light snowfall is looking to taper off by Sunday
morning. Current total accumulations (today through Sunday) are
between 1-3".

Next week: Upper level ridging over the PNW and high pressure in
the intermountain west looks to continue our theme of embedded
short-wave disturbances along persistent northwesterly flow. This
could again bring warmer temperatures and repeating chances for
rain, snow, and maybe some things in between across Montana.

FORECAST CONFIDENCE & DEVIATIONS:
Blended HRRR and NBM90 for day 1-2 winds, NBM otherwise.

Today through tonight precip and temperatures: High confidence.
Tomorrow through the weekend temperatures: High confidence.
Tomorrow through the weekend precip: Moderate confidence.

&&

.AVIATION...

LAST UPDATED: 0900Z

FLIGHT CAT RANGE: VFR - MVFR

DISCUSSION: A warm front passing through will bring LLWS around
KGGW between until 12Z. West winds will remain steady through the
TAF cycle. Lowering cloud bases and light snow showers will shift
flight cat to MVFR after 0Z, but IFR conditions cannot be ruled
out after 6Z tonight.

&&

.GGW WATCHES/WARNINGS/ADVISORIES...
None.
&&

$$

weather.gov/glasgow