Sidney, Montana 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

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FXUS65 KGGW 140633
AFDGGW

Area Forecast Discussion
National Weather Service Glasgow MT
1133 PM MST Fri Feb 13 2026

.KEY MESSAGES...
- A weak low pressure system is expected a slight chance of mixed
  precipitation Saturday night into Sunday night. Above normal
  temperatures look to continue through Monday.

- A change in the weather pattern is expected starting Tuesday
  with colder temperatures, accumulating snow, and gusty winds.




&&

.DISCUSSION...

WEATHER PATTERN OVERVIEW:
A zonal pattern over Montana will allow a weak low pressure system
to move through southern Saskatchewan on Saturday night. There is
currently a mix of rain and snow forecast along the Missouri River
and areas to the north of there. There is very little accumulation
expected with this activity. Weak ridging will help maintain mild
conditions through Monday.

A strong upper trough is expected to push southward from British
Columbia, and this will extend far enough eastward to aid in a low
pressure system moving across the area. There is a decent amount
of uncertainty with precipitation type due to a large temperature
swing, but overall there appears to be at least a decent chance of
most the area receiving a wetting rain occurring on Tuesday into
Wednesday. Snow that falls will have a rather strong east wind
associated with it, so there are challenging travel impacts
expected in this time period, especially in the northeast part of
the area. For now, the mean NBM probability suggests potential for
around 3 to 6 inches of snow in Sheridan, Daniels, Roosevelt, and
Valley Counties, with 1 to 4 inches of snow in all other
locations.

The 00Z GFS Ensemble suggests the upper trough will remain over
the region after Wednesday, and lingering precipitation chances
are expected on Thursday and Friday. Temperatures are expected to
be closer to average after Tuesday as well.

FORECAST CONFIDENCE & DEVIATIONS:
Made deviations for Saturday afternoon winds by utilizing NBM 90,
and increased PoPs for Saturday night through Sunday night.

There is low to moderate confidence in mixed precipitation
occurring for portions of the area Saturday night into Sunday
night.

There is high confidence in temperatures through Monday, with
moderate confidence after this time.

There is high confidence in the wind forecast for Saturday.

There is moderate to high confidence on most of the area receiving
one tenth of an inch of precipitation on Tuesday into Wednesday,
but low confidence on the timing of the change in precipitation
type.

&&

.AVIATION...
LAST UPDATE: 0615Z

FLIGHT CAT RANGE: VFR - MVFR

DISCUSSION: VFR conditions will persist with high to mid clouds
through 06Z Sunday. There is low to moderate (20 to 40 percent)
confidence of a low pressure system bringing a wintry mix to KGGW,
KOLF, and KSDY after 06Z Sunday.

WIND: Light west through 09Z, becoming light and variable,
becoming west at 9 to 16 knots after 18Z.

&&

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

$$

weather.gov/glasgow