Teigen, Montana Weather Forecast Discussion

199
FXUS65 KGGW 270810
AFDGGW
Area Forecast Discussion
National Weather Service Glasgow MT
210 AM MDT Sat Sep 27 2025
.DISCUSSION...
KEY MESSAGES:
- Warming temperatures are expected starting today through
  Tuesday.
- Models are pointing towards some precipitation chances at times
  starting Tuesday night and continuing on and off the remainder
  of the week.
WEATHER PATTERN OVERVIEW:
Upper level ridge builds over the region today and remains in
place through Monday with warm and dry weather. Highs on Sunday
and Monday will be in the 80s in most areas and there is currently
around a 10 percent chance of some areas along and south of US 2
having a high of 90 degrees or warmer.
Meanwhile, models and ensembles have trended warmer on Tuesday
when the ridge moves to the east and the flow aloft becomes south
to SW aloft. Some areas could have highs above 90 on Tuesday. NBM
currently is giving the Missouri River Valley east of Fort Peck
Lake and the Yellowstone River Valley a 30 to 50 percent chance of
a high of 90 or higher on Tuesday. Prefrontal compressional
warming is also expected on Tuesday.
A cold front is expected either Tuesday night or Wednesday morning with
chances for showers in most areas.
Wednesday and beyond, SW flow aloft is expected with chances for
showers at times and somewhat cooler temperatures.
FORECAST CONFIDENCE & DEVIATIONS:
Confidence in temperature forecast is very high today through
Monday and moderate to high on Tuesday.
Confidence in rain forecast chances Tuesday night and beyond
is low due to differences in model and ensemble timing.
Raised temperatures slightly on Tuesday. Otherwise, no deviations
from NBM.
&&
.AVIATION...
UPDATED: 0800Z, Saturday, Sept. 27.
FLIGHT CONDITIONS: VFR.
DISCUSSION: Skies will be mostly clear today and tonight as upper ridge
builds over the area. Smoke from wildfires in Oregon and
Washington is expected to drift into eastern Montana the next few
days. It is uncertain at this point of the smoke will be thick
enough to reduce visibility below 6SM.
WINDS: Light and variable this morning, mainly SW 5 to 10 knots
this afternoon and SE or variable less than 10 knots tonight.
EQUIPMENT: KSDY AMD NOT SKED will remain in place until the METARs
comms issue is repaired.
&&
.GGW WATCHES/WARNINGS/ADVISORIES...
None.
&&
$$
weather.gov/glasgow

NWS GGW Office Area Forecast Discussion