Sidney, Montana Weather Forecast Discussion

287
FXUS65 KGGW 070850
AFDGGW
Area Forecast Discussion
National Weather Service Glasgow MT
250 AM MDT Sun Sep 7 2025
.DISCUSSION...
KEY MESSAGES:
- A warm ridge of high pressure brings a return to summer-like
  conditions starting today.
- Daily chances for showers and thunderstorms return to our region
  by the midweek.
WEATHER PATTERN OVERVIEW:
A warm upper level ridge of high pressure over the Pacific NW is
drifting eastward into Montana over the next few days. This will
allow for clear/sunny skies aside from some high clouds, low
humidity and high temperatures notably rebounding to as warm as
the upper 80s from today into midweek.
The next low pressure system will push into the Pacific NW and
orient some SW flow aloft approaching NE Montana as early as Tuesday
evening. This will direct more Pacific moisture and some
instability into our region and set the stage for a return to more
scattered thunderstorms later next week. At this time, model data
is unclear regarding placement and timing of these storms. Those
details will become more clear by midweek.
FORECAST CONFIDENCE & DEVIATIONS:
Stayed close to the base forecast besides adding some detail to
short term winds and humidities. There is high confidence in the
forecast through Tuesday, then more average confidence thereafter
for the extent of rain chances and amounts.
&&
.AVIATION...
UPDATED: 0830Z, 9/7
FLIGHT CATEGORY: VFR
DISCUSSION: No concerns. A ridge of high pressure will provide
mostly light and variable winds, while high cloud coverage
gradually increases.
EQUIPMENT: KSDY AWOS broadcast system is currently out for METARS
and amendments will not be scheduled. (AMD NOT SKED)
&&
.GGW WATCHES/WARNINGS/ADVISORIES...
None.
&&
$$
weather.gov/glasgow

NWS GGW Office Area Forecast Discussion