Sidney, Montana 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

189
FXUS65 KGGW 052054
AFDGGW

Area Forecast Discussion
National Weather Service Glasgow MT
254 PM MDT Fri Sep 5 2025

.DISCUSSION...

KEY MESSAGES:

- Below normal temperatures with a frost/freeze expected
  overnight tonight through early Saturday morning.

- A high pressure ridge brings a return to summer-like conditions
  by early next week.

WEATHER PATTERN OVERVIEW:

The large, strong low pressure system which had pushed strong and
gusty winds through our area yesterday is now moving over the
Great Lakes region, and the last vestiges of departing low level
clouds are just clearing our border with North Dakota.

An warm upper level ridge of high pressure over the Pacific NW is
expected to flatten a bit while it drifts eastward into Montana
by early next week. This will allow for mainly clear skies, lower
humidity, and high temperatures rebounding into the mid to upper
80s from Sunday into midweek.

After which, the next low pressure system will push into the
Pacific NW and orient some SW flow aloft approaching NE Montana as
early as Wednesday evening. This will direct more Pacific moisture
and some instability into our region and set the stage for a
return to scattered thunderstorms later next week.

FORECAST CONFIDENCE & DEVIATIONS:

Stayed close to the base forecast besides adding some detail to
short term winds and temperature spread. There is high confidence
in the forecast through Tuesday, then more average confidence
thereafter for the extent of rain chances.


&&

.AVIATION...

UPDATED: 2052Z, Sept 5th, Friday afternoon.

FLIGHT CATEGORY: VFR

DISCUSSION: A stable atmosphere and departing low level clouds
will make for excelled flying conditions through the next two or
three days.

WINDS: This afternoon, from the NW at 10 to 15 kts with gusts up
to 23 kts. This evening, light and variable if not calm. Saturday
from the E and SE around 10 kts.

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