Big Sky Resort
October 26 in the books — biggest dump on this date: 5.0″ in 2019 (snowed on 11 of 24 recorded years). All-time single day: 17.0″ on Oct 22, 2022.
Stoke today Oct 26
Next 24 hours forecast
Forecast
0.3″
best available forecast · as of Oct 26 08:56
NWS 0.3″ · Open-Meteo 0.1″
Last 24 hours measured
Station
0.0″
Lone Mountain SNOTEL · 2.3 km · depth 0.0″ · rolling 24 h, observed Oct 26 06:00
Next 48 hours (0.3″ snow · as of Oct 26 08:56)
10-day outlook
Forecast data: National Weather Service; Weather data by Open-Meteo.com (CC BY 4.0); Data from MET Norway (CC BY 4.0) — adapted by SnowAlert.
In the forecaster’s words
Overnight
Mostly cloudy. Low around 31, with temperatures rising to around 35 overnight. East northeast wind around 2 mph.
Monday
Partly sunny. High near 50, with temperatures falling to around 46 in the afternoon. East southeast wind 2 to 6 mph, with gusts as high as 18 mph.
Today
Partly sunny. High near 50, with temperatures falling to around 46 in the afternoon. East southeast wind 2 to 6 mph, with gusts as high as 18 mph.
Tonight 0–0.5″
A chance of rain between 7pm and 8pm, then rain and snow. Mostly cloudy, with a low around 28. South southwest wind around 7 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New snow accumulation of less than half an inch possible.
Tuesday none expected
A chance of snow before 5pm. Partly sunny. High near 39, with temperatures falling to around 36 in the afternoon. West southwest wind 3 to 7 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Tuesday Night
Partly cloudy, with a low around 22. South southwest wind 3 to 7 mph, with gusts as high as 20 mph.
Forecast discussion TFX · Oct 26 04:15
- Dense fog will continue to affect Southwest MT through this morning. - Light rain and snow will move from west to east across the CWA overnight tonight. - Another round of light rain or snow showers is expected to end the work week. - Overall, afternoon temperatures will generally be near to a bit below normal all week.
Read the full discussion
000 FXUS65 KTFX 261015 AFDTFX Area Forecast Discussion National Weather Service Great Falls MT 415 AM MDT Mon Oct 26 2026 .KEY MESSAGES... - Dense fog will continue to affect Southwest MT through this morning. - Light rain and snow will move from west to east across the CWA overnight tonight. - Another round of light rain or snow showers is expected to end the work week. - Overall, afternoon temperatures will generally be near to a bit below normal all week. && .DISCUSSION... - Meteorological Overview: Low clouds and dense fog continue to affect Southwest MT this morning. Increasing high clouds will prevent the dense fog from expanding in areal coverage, but will also prevent the dense fog from burning off quickly this morning. Thus the no changes to the current dense fog advisory statement. Otherwise, the main concern later today/tonight will be the increasing chances for rain/snow as the next upper level trof approaches from the West. The heaviest precipitation should fall in the mountains with this system, with the southwest mountains being the favored area. Thus a winter weather advisory has been issued for tonight for the southwest mountains around Pony, Big Sky and West Yellowstone. This will be a quick moving trof, with most of the precipitation ending by early Tuesday morning. For the rest of Tue/Wed, the airmass will remain a bit unstable for a few passing light rain/snow showers, but most/if any of the precipitation that falls should be in the mountains. For later in the work week...mostly Thu into Fri...an upper level low will develop off the coast of the Pacific Northwest, but generally stall over that region. This will result in a moist southwesterly flow aloft developing over MT, which will allow for scattered rain/snow showers to move through the CWA from time to time. The upper level trof will begin to move slowly eastward over the weekend, and then moving across MT early next week. Thus the chances for light rain/snow showers will continue for several days. Overall, afternoon temperatures will generally be a bit below normal across the CWA, with a few locations possibly seeing near normal temperatures Tue/Wed. - Forecast Confidence & Scenarios: The main concern tonight will be the light snow across Southwest MT. Overall snow accumulations look to be on the lighter side, thus a winter weather advisory has been issued for one mountain zone...330...for this system. Rain is likely to change to snow at all elevations by Tue morning, but any snow accumulations at lower elevations generally look to be less than an inch at this time. Periods of light snow are expected in the mountains later this week and into this weekend. Overall most of the snow accumulations will continue to be on the light side, but a winter statement might be needed from time to time over portions of the CWA later this week and into this weekend. Brusda && .AVIATION... 26/12Z TAF Period The main concern this morning will be areas of dense fog over Southwest MT, with visibility below 1/2SM at times. The fog will be a bit slow to burn off, thinking late morning, with low ceilings continuing into mid afternoon. Then the next round of light rain/snow moves into the western portions of the CWA by 00z Tue. Expect this band of precipitation to move from west to east across the CWA tonight. Mountains/passes will be obscured by clouds/precipitation across the CWA through the period. Brusda && .PRELIMINARY POINT TEMPS/POPS... GTF 43 32 51 35 / 0 60 20 0 CTB 43 26 50 28 / 0 40 30 0 HLN 48 33 51 28 / 0 90 10 0 BZN 51 29 47 23 / 0 90 20 0 WYS 48 19 37 15 / 10 100 60 20 DLN 52 31 45 24 / 0 80 0 0 HVR 52 29 50 29 / 0 40 70 40 LWT 49 30 47 29 / 0 60 40 0 && .TFX WATCHES/WARNINGS/ADVISORIES... Dense Fog Advisory until noon MDT today for Beaverhead and Western Madison below 6000ft-Canyon Ferry Area-Elkhorn and Boulder Mountains-Gallatin Valley-Gallatin and Madison County Mountains and Centennial Mountains-Madison River Valley-Missouri Headwaters-Northwest Beaverhead County. Winter Weather Advisory from 9 PM this evening to 6 AM MDT Tuesday for Gallatin and Madison County Mountains and Centennial Mountains. && $$ http://www.weather.gov/greatfalls
Sources & last updated
- Data from MET Norway — CC BY 4.0, adapted by SnowAlert fetched Oct 26 07:07
- National Weather Service fetched Oct 26 08:56
- Weather data by Open-Meteo.com, from the ECMWF and NOAA models — CC BY 4.0, adapted by SnowAlert fetched Oct 26 07:01
- USDA NRCS SNOTEL fetched Oct 26 06:35