221
FXUS65 KGGW 071916
AFDGGW

Area Forecast Discussion
National Weather Service Glasgow MT
116 PM MDT Mon Jul 7 2025

.DISCUSSION...
KEY MESSAGES:

1) Hot weather will return Tuesday and Wednesday with highs in
the 90s to near 100.

2) Cooler conditions to follow Thursday and Friday with gusty NW
winds on Thursday.

3) Isolated to scattered showers/thunderstorms expected with a
cold front Wednesday night through Friday morning.

WEATHER PATTERN OVERVIEW:

mainly sunny/clear conditions will linger into Wednesday as an
upper ridge will build into eastern Montana. With W or SW flow
(and compressional warming), temperatures will warm with highs in
the upper 80s and 90s Tuesday, 90s to low 100s Wednesday. This
will lower humidities that will be in the teens in most areas on
Wednesday. At this point, west to SW winds will be less than 15
mph. Elevated fire weather conditions are possible with the low RH
but more wind would be needed for critical fire weather
conditions to occur. Heat impact levels are currently forecasted
to high enough along and south of US Highway 2 that a Heat
Advisory may be needed on Wednesday.

An upper trough moves across the Canadian Prairies Wednesday night
and Thursday which will bring a cold front through NE Montana
Thursday morning with cooler temperatures. The system will bring a
chance of showers and thunderstorms Wednesday night and possibly
Thursday Night. However, more thunderstorms than showers Wednesday
night which could provide fire starts. Strong NW winds are
possible Thursday with a Lake Wind Advisory possible on Fort Peck
Lake.

Cooler air is expected Thursday and Friday then warmer temperatures
return for the weekend as the upper trough moves to the east.

FORECAST CONFIDENCE & DEVIATIONS:

There is high confidence of temperatures reaching the 90s to near
100 for many locations by Wednesday.

No deviations from the NBM at this time.

&&

.AVIATION...

LAST UPDATED: 2000Z

FLIGHT CAT RANGE: VFR.

DISCUSSION: Clear skies this evening then some mid-level clouds
will move in late tonight then mainly clear Tuesday.

WINDS: Light and variable this evening then E at light speeds
beginning first at KGGW. TFJ

&&

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

$$

weather.gov/glasgow