New €155m Les Grands Montets Lift Begins Opening This Winter
Closed since the devastating 2018 fire, the first part of the flagship new Grands Montets lift above Argentière in the Chamonix Valley is set to open this December.
View forecast
Keystone at 3717 m altitude
Issued by Snow-Forecast.com at: 11 pm (local time) / 20 Sep 2026
Next 4 days weather summary:Light rain (total 9.0mm), mostly falling on Wed afternoon. Freeze-thaw conditions (max 9°C on Mon afternoon, min -1°C on Sun night). Wind will be generally light. | Days 5-7 weather summary:Moderate rain (total 16.0mm), heaviest on Fri afternoon. Mild temperatures (max 9°C on Sat afternoon, min 1°C on Fri night). Wind will be generally light. | |||||||||||||||
Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | ||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | | |  |  | | | |  | | | | | | |
clear | some clouds | some clouds | clear | some clouds | light rain | rain shwrs | light rain | light rain | rain shwrs | rain shwrs | light rain | rain shwrs | rain shwrs | light rain | rain shwrs | |
km/h | ||||||||||||||||
Snow map |  |  |  |  |  |  | ||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | — | — | 1 | 2 | 1 | 5 | 1 | 1 | 3 | 4 | 1 | 5 | 1 |
max °C | 2 | 7 | 9 | 3 | 9 | 9 | 4 | 7 | 5 | 3 | 8 | 6 | 3 | 8 | 7 | 4 |
min °C | -1 | 3 | 8 | 1 | 5 | 6 | 3 | 5 | 4 | 2 | 5 | 5 | 2 | 5 | 5 | 1 |
chill °C | -4 | 1 | 6 | -1 | 3 | 5 | 3 | 4 | 4 | 2 | 5 | 4 | 0 | 3 | 3 | -1 |
Humid % | 49 | 35 | 21 | 67 | 43 | 43 | 71 | 72 | 81 | 84 | 67 | 67 | 92 | 70 | 62 | 85 |
Freeze m | 3750 | 4200 | 4850 | 4050 | 4450 | 4800 | 4250 | 4500 | 4500 | 4300 | 4400 | 4600 | 4250 | 4400 | 4700 | 4050 |
 | — | 6:50 | — | — | 6:50 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — |
 | — | — | 7:02 | — | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:55 | — |
Days 7-16 weather summary:
Interested in the 16-day Forecast? Unlock the full forecast and many more features by becoming a Pro member.
SnowPro
Hourly & 16-day forecasts- View past weather
- Fast, ad-free browsing
- Snow hindcasts & History
Unlocks app & website
Avalanche information: Colorado Avalanche Information Center
Popular Keystone Pages
Snow Radar
Latest snow reports near Keystone:
Keystone Snow Conditions
| Top snow depth: | 0 cm |
|---|---|
| Bottom snow depth: | 0 cm |
| Fresh snowfall depth: | — |
| Last snowfall: | 22 May 2026 |
| Snow Alerts | Create Alert |
Other resorts in USA - Colorado are reporting: powder (0) / good piste (0)
Snow-Forecast Partner Offers
Snow History
Week 3 of September has on average:
0.0 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.0 | Powder days Fresh snow, limited sun, any wind. |
0.1 | Bluebird days Average snow, mostly sunny, light wind. |
Find Your Trip
Keystone Forecast Snowfall
Sign up or Login to accessSnow-Forecast Partner Offers
Photos of Keystone
Keystone by Tom
Keystone by Tom
SunRISE above Keystone, Colorado by fredg
Upload new photo Other resorts in USA - Colorado are reporting: powder (0) / good piste (0)
The above table gives the weather forecast for Keystone at the specific elevation of 3717 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Keystone. To access the weather forecasts for the other elevations, use the tab navigation above the table. For a wider view of the weather, check out the Weather Map of United States.
Click here to read further information on freezing levels and how we forecast our temperatures.
Visitor Reviews of Keystone
Overall 4.0 Based on 16 votes and 5 reviews
- Snowsure
- Variety of pistes
- Vote
- Barry Peters from United Kingdom writes:
Summary: Keystone is a very well run friendly ski area. I am a fairly advanced skier who wanted to get better at bumps (moguls). Also good for beginners and good night skiing and fun-park. Pluses at Keystone: Helpful, well organised (this is N America, not Italy after all). Because of the recession and the time of year I went (late March), it was fairly quiet and no/tiny lift queues. Enough skiing unless you are really hard core. You can always go the the nearby resorts of Vail, Beaver Creek, Breckenbridge if you want (same lift pass but need to take bus or go by car). Lots of accommodation nearby - little that is ski-in, ski-out, but little problem unless you are lazy or can't walk & hold skis at the same time. Superb free bus chuttles that take you all around Keystone. Well-organised night skiing. Fantastic ski school (I used Mountain Lodge and they were the best I have used - good for all levels) Minuses at Keystone: The elevation can take getting used to for some. The cost of the lift pass - ouch. Made worse for us Europeans by the terrible exchange rate. However, a season pass for all the local resorts costs roughly the same as a week pass so actually it is cheap if you go for a few weeks. Barry Peters
Visitor Reviews of Keystone
Barry Peters from United Kingdom writes:
Summary:
Keystone is a very well run friendly ski area.
I am a fairly advanced skier who wanted to get better at bumps (moguls). Also good for beginners and good night skiing and fun-park.
Pluses at Keystone:
Helpful, well organised (this is N America, not Italy after all).
Because of the recession and the time of year I went (late March), it was fairly quiet and no/tiny lift queues.
Enough skiing unless you are really hard core. You can always go the the nearby resorts of Vail, Beaver Creek, Breckenbridge if you want (same lift pass but need to take bus or go by car).
Lots of accommodation nearby - little that is ski-in, ski-out, but little problem unless you are lazy or can't walk & hold skis at the same time. Superb free bus chuttles that take you all around Keystone.
Well-organised night skiing.
Fantastic ski school (I used Mountain Lodge and they were the best I have used - good for all levels)
Minuses at Keystone:
The elevation can take getting used to for some.
The cost of the lift pass - ouch. Made worse for us Europeans by the terrible exchange rate. However, a season pass for all the local resorts costs roughly the same as a week pass so actually it is cheap if you go for a few weeks.
Barry Peters
Nearest