418
FXUS65 KGGW 221045
AFDGGW

Area Forecast Discussion
National Weather Service Glasgow MT
345 AM MST Mon Dec 22 2025

.DISCUSSION...

KEY MESSAGES:

- Slight chance of wintry mix beginning this morning.

- Temperature swings through the weekend and chances for
  precipitation Christmas Eve night.

WEATHER PATTERN OVERVIEW:
With the upper flow turning SW, temps will warm to slightly above
average to near normal. A wave of low pressure over the Northern
Rockies will move east out of the region by tomorrow. Chances for
mixed precipitation today will be brief and limited, but may cause
slippery roads if currently ice packed. Moisture transported
inland form the atmospheric river event off the west coast may
more easily increase PoPs if regions of frontogenesis materialize
through Thursday.

FORECAST CONFIDENCE & DEVIATIONS:
Blended HRRR & NBM90 to day 1 winds. 75% NBM90 for day 1 wind
gusts.

Today through tonight precip and temperatures: Low confidence in
precip. High confidence in seasonably warm temps.
Tomorrow through the weekend temperatures: High confidence in
(generally) warmer highs and oscillating lows.
Tomorrow through the weekend precip: Low confidence.


&&

.AVIATION...

UPDATED: 1000Z

FLIGHT CATEGORY: VFR

DISCUSSION: VFR conditions through the TAF cycle. From 15Z - 18Z
mixed precipitation will move west to east. There is a low
probability of freezing rain.

WINDS: South to southeast at 5 - 10 kts veering west northwest
increasing to 15 - 20 knots this afternoon. Winds tonight will
shift predominantly north becoming light.

LLWS: 17Z - 20Z


&&

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

$$

weather.gov/glasgow