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Glasgow, Montana 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
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NWS Forecast for Glasgow MT
National Weather Service Forecast for:
Glasgow MT
Issued by: National Weather Service Glasgow, MT |
| Updated: 2:08 pm MST Dec 23, 2025 |
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This
Afternoon
Chance Snow
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Tonight
Slight Chance
Wintry Mix
then Slight
Chance
Freezing Rain
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Wednesday
Mostly Cloudy
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Wednesday
Night
Chance Sleet
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Christmas
Day
Chance Wintry
Mix
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Thursday
Night
Slight Chance
Freezing Rain
then Slight
Chance Snow
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Friday
Slight Chance
Wintry Mix
then Slight
Chance Rain
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Friday
Night
Chance
Freezing Rain
then Chance
Wintry Mix
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Saturday
Blustery.
Slight Chance
Snow then
Mostly Sunny
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| Hi 24 °F |
Lo 16 °F |
Hi 27 °F |
Lo 18 °F |
Hi 29 °F |
Lo 18 °F |
Hi 36 °F |
Lo 3 °F |
Hi 16 °F |
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This Afternoon
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A 30 percent chance of snow, mainly before 4pm. Cloudy, with a high near 24. East wind around 13 mph. Little or no snow accumulation expected. |
Tonight
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A slight chance of snow before 9pm, then a slight chance of freezing rain between 9pm and 4am. Mostly cloudy, with a low around 16. East northeast wind 8 to 11 mph. Chance of precipitation is 20%. |
Wednesday
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Mostly cloudy, with a high near 27. East wind 9 to 14 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 29 mph. |
Wednesday Night
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A chance of sleet, mainly after 5am. Mostly cloudy, with a low around 18. East wind 10 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 30%. Little or no sleet accumulation expected. |
Christmas Day
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A chance of sleet before 8am, then a chance of freezing rain between 8am and 2pm, then a chance of snow after 2pm. Mostly cloudy, with a high near 29. East wind 5 to 8 mph becoming light and variable in the afternoon. Chance of precipitation is 40%. Little or no snow and sleet accumulation expected. |
Thursday Night
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A slight chance of freezing rain before 11pm, then a slight chance of snow after 5am. Mostly cloudy, with a low around 18. East southeast wind 3 to 6 mph. Chance of precipitation is 20%. |
Friday
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A slight chance of snow before 8am, then a slight chance of freezing rain between 8am and 11am, then a slight chance of rain after 11am. Mostly cloudy, with a high near 36. East southeast wind around 6 mph becoming west southwest in the afternoon. Chance of precipitation is 20%. |
Friday Night
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A chance of freezing rain before 2am, then a chance of snow. Mostly cloudy, with a low around 3. Northeast wind 7 to 14 mph becoming west in the evening. Winds could gust as high as 21 mph. Chance of precipitation is 40%. |
Saturday
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A 20 percent chance of snow before 11am. Partly sunny, with a high near 16. Blustery, with a northwest wind 18 to 22 mph, with gusts as high as 34 mph. |
Saturday Night
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Partly cloudy, with a low around -9. Northwest wind 10 to 20 mph, with gusts as high as 28 mph. |
Sunday
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Partly sunny, with a high near 10. Northwest wind 5 to 7 mph becoming southeast in the afternoon. |
Sunday Night
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Mostly cloudy, with a low around -1. |
Monday
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Mostly cloudy, with a high near 27. |
Monday Night
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Mostly cloudy, with a low around 15. |
Tuesday
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A chance of flurries. Partly sunny, with a high near 35. |
Forecast from NOAA-NWS
for Glasgow MT.
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Weather Forecast Discussion
272
FXUS65 KGGW 232012
AFDGGW
Area Forecast Discussion
National Weather Service Glasgow MT
112 PM MST Tue Dec 23 2025
.DISCUSSION...
KEY MESSAGES:
- Isolated rain and snow through this evening.
- A wintry mix including freezing rain possible on Christmas Day.
- Another round of mixed precipitation possible Friday into
Saturday.
WEATHER PATTERN OVERVIEW:
A weak push of moisture from the south has resulted in a weak band
of precipitation occurring, with very little accumulation
expected. The band will move from south to north across the area
before ending late this evening. A broad ridge across the CONUS is
expected to become more amplified through the week, with the east
Pacific trough digging southward along with the Gulf of Alaska
low. This will lead to a slow increase in moisture streaming into
Montana as the atmospheric river pushing into southern California
spreads across the Great Basin.
With the weak winter thermal boundary over central Montana, as
slight ripples occur in the flow and moisture increases,
overrunning precipitation is possible. Thermal profiles with warm
air aloft and a colder boundary layer will create conditions for
freezing rain and ice pellets over mainly the central part of the
CWA from any precipitation that occurs, intermittently from
Wednesday night through Saturday morning.
A stronger shortwave pushes through the ridge on Friday night for
another chance for precipitation along with gusty winds and
dropping temperatures. An arctic airmass will keep temperatures
down below normal on Saturday and Sunday. A ridge is expected to
move back in on Monday.
FORECAST CONFIDENCE & DEVIATIONS:
Increased pops on Day 1 to account for the weak band of
precipitation moving through the area. Increased winds for the
area for Day 1 and 2, especially around Glasgow and Vandalia.
Increased PoPs slightly for Days 2 and 3 since there is decent
agreement among CAM models of freezing rain and ice pellets
occurring.
There is moderate to high confidence in temperatures for the next
6 days of the forecast. There is high confidence of less than
0.02 hundredths of precipitation occurring through this evening.
There is moderate to high confidence in freezing rain occurring
Wednesday night into Thursday night west of HWY 24, with low
confidence in precipitation accumulation. There is moderate
confidence of a wintry mix occurring on Friday. There is high
confidence a winter weather headline being issued for Wednesday
night into Thursday, but the uncertainty lies in freezing rain
accumulation amounts and surface temperatures getting above
freezing at the time the precipitation moves through.
Moderate to high confidence for widespread freezing rain on
Thursday, with lower confidence for the QPF amount.
&&
.AVIATION...
UPDATED: 2030Z
FLIGHT CATEGORY: VFR, Isolated IFR.
DISCUSSION: Widely scattered precipitation is moving through the
region from south to north along a stationary surface front. There
is high confidence of VFR conditions remaining in place through
10Z. There is low to moderate confidence in a surface east and
southeast wind aiding in isolated IFR conditions developing
between 10Z and 18Z.
WINDS: For KGGW, southeast winds at 7 to 15 knots, becoming
northeast after 6Z, becoming southeast again after 18Z. For all
other sites, east at 6 to 12 knots, becoming light and variable
after 4Z, becoming east at 7 to 13 knots after 11Z.
&&
.GGW WATCHES/WARNINGS/ADVISORIES...
None.
&&
$$
weather.gov/glasgow
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