Mount Gallatin mountain forecast
At the summit’s height the GFS model has 33°F and wind from the SSW at 4 mph, a wind chill of 29°F, Fri, Sep 25, 10:00 PM AKDT. The freezing level is at 4,029 ft, 978 ft below the summit.
The summit on the map
Mount Gallatin and the summits and ski areas around it. Each has its own page.
- Mount Gallatin
- Other summits
Now
- Summit
- 5,007 ft (1,526 m)
- Summit temperature
- 33°F
- Summit wind
- SSW 4 mph
- Freezing level
- 4,029 ft
At the summit’s height
Temperature, wind and wind chill up there, and the freezing level, every six hours for three days.
| Time | Temp | Wind | Wind chill | Freezing level | |
|---|---|---|---|---|---|
| Fri, Sep 25, 10:00 PM AKDT | 33°F | SSW 4 mph | 29°F | 4,029 ft | 978 ft below the summit |
| Sat, Sep 26, 4:00 AM AKDT | 32°F | S 7 mph | 26°F | 3,743 ft | 1,263 ft below the summit |
| Sat, Sep 26, 10:00 AM AKDT | 31°F | S 11 mph | 23°F | 4,820 ft | 187 ft below the summit |
| Sat, Sep 26, 4:00 PM AKDT | 29°F | SSE 9 mph | 21°F | 3,999 ft | 1,007 ft below the summit |
| Sat, Sep 26, 10:00 PM AKDT | 30°F | S 11 mph | 20°F | 3,894 ft | 1,112 ft below the summit |
| Sun, Sep 27, 4:00 AM AKDT | 31°F | S 12 mph | 21°F | 4,482 ft | 525 ft below the summit |
| Sun, Sep 27, 10:00 AM AKDT | 31°F | S 16 mph | 20°F | 4,495 ft | 512 ft below the summit |
| Sun, Sep 27, 4:00 PM AKDT | 32°F | S 15 mph | 22°F | 5,180 ft | 174 ft above the summit |
| Sun, Sep 27, 10:00 PM AKDT | 31°F | S 16 mph | 20°F | 4,636 ft | 371 ft below the summit |
| Mon, Sep 28, 4:00 AM AKDT | 32°F | SSW 13 mph | 23°F | 5,177 ft | 171 ft above the summit |
| Mon, Sep 28, 10:00 AM AKDT | 31°F | SSW 6 mph | 25°F | 4,885 ft | 121 ft below the summit |
| Mon, Sep 28, 4:00 PM AKDT | 32°F | SW 4 mph | 29°F | 5,062 ft | 56 ft above the summit |
NOAA’s GFS model, run Fri, Sep 25, 4:00 PM AKDT, interpolated to 5,007 ft between its pressure levels: the free air over the summit, which on a ridge is close to what a climber feels and in a sheltered spot is more than it. Wind chill is the National Weather Service’s formula, given where the temperature is 50°F or less and the wind above 3 mph.
Snow
No snow in the National Weather Service’s forecast for the summit’s grid cell over the next several days.
Sunrise and sunset
| Day | First light | Sunrise | Sunset | Last light | Daylight |
|---|---|---|---|---|---|
| September 26 | 6:04 AM | 6:41 AM | 6:38 PM | 7:15 PM | -13h -3m |
| September 27 | 6:06 AM | 6:43 AM | 6:35 PM | 7:13 PM | -13h -8m |
| September 28 | 6:08 AM | 6:45 AM | 6:32 PM | 7:10 PM | -13h -13m |
| September 29 | 6:10 AM | 6:48 AM | 6:30 PM | 7:07 PM | -13h -18m |
| September 30 | 6:12 AM | 6:50 AM | 6:27 PM | 7:05 PM | -13h -23m |
| October 1 | 6:14 AM | 6:52 AM | 6:24 PM | 7:02 PM | -13h -28m |
| October 2 | 6:16 AM | 6:54 AM | 6:22 PM | 6:59 PM | -13h -32m |
For a sea-level horizon at the summit’s position, local time. From a summit the horizon sits lower, so the sun is seen a few minutes before sunrise and after sunset; a ridge to the east or west does the opposite.
- Elevation
- 5,007 ft (1,526 m)
- Prominence
- 2,579 ft (786 m)
- Coordinates
- 56.7539, -131.9006
- Nearest town
- Wrangell
What this means
- Why a summit forecast differs
- The air cools with height, by about 3.6°F per 1,000 feet on average, and the wind above a ridge blows at the speed of the free atmosphere rather than slowed by the valley floor. A town’s forecast says little about the top of the mountain above it.
- Freezing level
- The height where the air is at 32°F (0°C). Above it precipitation falls as snow and wet rock freezes; the snow line usually sits a few hundred to a thousand feet below it.
- Wind chill
- How cold the air feels on exposed skin, from the temperature and the wind, by the National Weather Service’s 2001 formula.
- Cloud base
- Where cloud begins. When it is below the summit, the top is in cloud: no view, and in cold air, rime ice and poor visibility.
- Prominence
- How far a summit rises above the lowest contour line that encircles it and no higher summit: the measure of a mountain’s own height, not its neighbors’.
Nearby
Summits
Forecasts from the National Weather Service. Summit-height temperature, wind and freezing level from NOAA’s Global Forecast System on NOAA Open Data. Summits from Wikidata (CC0): prominence >= 600 m, or elevation >= 4267 m, or >= 12 Wikipedia editions; English Wikipedia article required; read 2026-09-25. Mountain weather changes fast; check the forecast again before you go.