896
FXUS65 KGGW 301141
AFDGGW

Area Forecast Discussion
National Weather Service Glasgow MT
541 AM MDT Tue Jun 30 2026

.KEY MESSAGES...
- Lake Wind Advisory today due to increasing west winds.

- Unsettled conditions continue with occasional showers and
  thunderstorms through the holiday weekend.

- Temperatures will gradually warm to near normal by the end of
  the week.

&&

.DISCUSSION...
WEATHER PATTERN OVERVIEW:
Upper low over the state this morning will lift northeast through
the day. Scattered showers will linger behind the low and will see
an increase in the west winds through the morning. These winds
will be strong enough to reach Lake Wind Criteria.

Weak ridging moves across the divide behind the departing low.
This will boost temperatures closer to normal for early July, and
lead to a slightly drier airmass. Showers and thunderstorm will
still be possible through the end of the week, but widespread
heavy rain is not anticipated.

The upper ridge builds in much stronger for early next week with
another jump in temperatures expected.
FORECAST CONFIDENCE & DEVIATIONS:

Minor deviations to account for pops this morning to match current
conditions. Winds were blended with the NBM90 for today to
account for the Lake Wind conditions.


&&

.AVIATION...
VFR most of the time. Areas of MVFR with scattered showers or
thunderstorms today.


&&

.GGW WATCHES/WARNINGS/ADVISORIES...
Lake Wind Advisory until 8 PM MDT this evening for Central and
Southeast Phillips-Central and Southern Valley-Garfield-McCone-
Petroleum.

&&

$$

weather.gov/glasgow