Keystone Snow Report and Forecast
Snow Forecast for Keystone
When will there be fresh snow?
This is the Snow Forecast for Keystone, United States for 16 days from 17 May.
Updated 17 May 2025 12:30 NZST.
| Next Snow Expected | 18 May |
|---|---|
| Next Snow Amount | 3cm |
| Next 48 Hours | 7cm |
| Next 7 Days | 9cm |
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For Forecast detail, see below.
For current snow depths and skiing conditions, see our Current Snow Report for Keystone.
Forecast for today in Keystone
Max 15℃
Min 2℃
Valley temperatures from an overnight low of 2℃ to daytime highs around 15℃
Freeze-thaw (spring snow) from mid-mountain up.
Temperature at BaseTemp at Base
Sat
17
Snow unlikely
Cloudy.
Keystone has 7cm new snow forecast in the next 48 hours.
Keystone Snow Report
Snow report from Arapahoe Basin (7km from Keystone)
| Snow Conditions | - |
|---|
Keystone 7-Day Snow Forecast Overview
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| Sat 17 | Sun 18 | Mon 19 | Tue 20 | Wed 21 | Thu 22 | Fri 23 | |
|---|---|---|---|---|---|---|---|
| Wind | SW F3 | SW F3 | NW F2 | NW F2 | SW F2 | SW F2 | |
| 3,720m | 8℃
| 6℃
 +3cm
| -2℃
 +4cm
| 0℃
 +2cm
| 8℃
 | 10℃
| 13℃
|
| SW F3 | SW F3 | NW F2 | NW F2 | SW F2 | SW F2 | ||
| 3,280m | 11℃
| 10℃
+3cm
| 0℃
+3cm
| 3℃
+2cm
| 10℃
| 13℃
| 16℃
|
| SW F3 | S F2 | NW F2 | NW F2 | SW F3 | SW F3 | ||
| 2,840m | 15℃
| 14℃
| 3℃
+2cm
| 5℃
+2cm
| 13℃
| 16℃
| 19℃
|
| Snow Line | varying 3,309m | varying 3,289m | varying 3,579m | ||||
| Max Town | 15℃ | 14℃ | 3℃ | 5℃ | 13℃ | 16℃ | 19℃ |
| Min Town | 2℃ | 2℃ | -4℃ | -1℃ | -4℃ | 0℃ | 3℃ |
This table shows the average forecast snowfall, the maximum temperature, and expected general weather at resort, lower and upper mountain levels. For daily forecast details, see below.
Keystone Medium-Range (7-Day) Snow Forecast Detail
Note :- Mountain weather is extremely dynamic; the forecast below will change. Any forecast snow may move forward or back in the forecast, and predicted snowfall depths will be revised in subsequent updates.
Max 15℃
Min 2℃
Valley temperatures from an overnight low of 2℃ to daytime highs around 15℃
Freeze-thaw (spring snow) from mid-mountain up.
Temperature at BaseTemp at Base
Sat
17
Snow unlikely
Cloudy.
Max 14℃
Min 2℃
Valley temperatures from an overnight low of 2℃ to daytime highs around 14℃
Freeze-thaw (spring snow) conditions up high.
Temperature at BaseTemp at Base
Snowfall per hour
Snow Line
Sun
18
up to 3cm New Snow
Cloudy, clear sky, clear spells later.
Snow Line from 3,309m to 3,029m, with rain below.
Max 3℃
Min -4℃
Freeze-thaw (spring snow) conditions, with valley temperatures cooling to -4℃ and rising to 3℃
Temperature at BaseTemp at Base
Snowfall per hour
Snow Line
Mon
19
2cm to 4cm New Snow
Clear spells first, heavy snow showers then light snow, clear spells later.
Snow Line from 3,289m to resort level.
Max 5℃
Min -1℃
Freeze-thaw (spring snow) conditions, with valley temperatures cooling to -1℃ and rising to 5℃
Temperature at BaseTemp at Base
Snowfall per hour
Snow Line
Tue
20
2cm New Snow
Heavy snow showers, light snow showers, clear spells later.
Snow Line from 3,579m to resort level.
Max 13℃
Min -4℃
Freeze-thaw (spring snow) conditions, with valley temperatures cooling to -4℃ and rising to 13℃
Temperature at BaseTemp at Base
Wed
21
Snow unlikely
Clear sky.
Max 16℃
Min 0℃
Valley temperatures from an overnight low of 0℃ to daytime highs around 16℃
Freeze-thaw (spring snow) from mid-mountain up.
Temperature at BaseTemp at Base
Thu
22
Snow unlikely
Clear sky.
Max 19℃
Min 3℃
Valley temperatures from an overnight low of 3℃ to daytime highs around 19℃
Freeze-thaw (spring snow) conditions up high.
Temperature at BaseTemp at Base
Fri
23
Snow unlikely
Clear sky early, then cloudy later.
This Snow Forecast for Keystone, United States gives the predicted Snowfall and Freezing Levels for the next week.
The forecast snowfall depths given are the likely average accumulations for the Lower and Upper slopes. The actual snow depth in Keystone, on any given piste or itinerary, may be dramatically different, particularly if the snowfall is accompanied by high winds and/or varying air temperatures.
Snow Forecasts beyond two days ahead are subject to significant change and variable reliability.
Keystone Snow Forecast updated at 12:30 NZST, next update expected 15:00 NZST.
Snow Forecast near Keystone
| Snow Report and Forecast | 48 Hr | Sat | Sun | Mon | Tue | Wed | Thu | Fri | 7 Day |
|---|---|---|---|---|---|---|---|---|---|
| Vail | 10cm | 12cm | |||||||
| Copper Mountain | 8cm | 9cm | |||||||
| Breckenridge | 6cm | 8cm | |||||||
| Winter Park | 3cm | 6cm | |||||||
| Arapahoe Basin | 3cm | 5cm | |||||||
| Loveland Ski Area | 2cm | 2cm |
Understanding and predicting Snow Conditions in Keystone
Here are our tips for making the most of a trip to Keystone, with the help of the J2Ski Snow forecasts and reports. You can find some great skiing in Keystone, but like any mountain, snow conditions change throughout the season, from day to day, and even from hour to hour.
Whether you’re sticking to the marked pistes or venturing off-piste, here’s what you need to know:
Pistes (Groomers) or Off-Piste
These can be a world apart, regarding snow conditions, even ignoring the difference between the natural terrain features to be found off-piste and the generally controlled surfaces and slopes of a pisted (groomed) run.
- Piste Conditions can range from fresh powder to firm, icy surfaces, particularly after warm spells or a busy day on the mountain with the passage of many skiers.
- Off-Piste Conditions are far more variable. Wind and sun can quickly transform fresh snow into wind crust or slushy layers, whilst cold weather can preserve stashes of powder many days after a snowfall.
WARNING - skiing off-piste (out-of-bounds) at Keystone is not always controlled (slopes made safe from avalanche risk) or patrolled. Always check local advice, ski with safety kit (and know how to use it), and never ski alone.
Analyzing Weather and Snowfall Forecasts
Whilst no forecast can tell you exactly how snow conditions in Keystone will develop, checking the forecast regularly should give you an idea of what to expect.
New snowfall can bring fresh powder and refresh the surfaces of pisted runs. Powder can be tracked out quickly at busy times, but in less crowded and shaded areas, fresh snow can linger for days.
Changes in weather conditions, such as milder temperatures, rain or wind, can degrade snow quality. Conversely, cold, stable weather can preserve conditions for extended periods.
Predicting Future Snow Quality
Regularly check our snow and weather forecasts for Keystone for changes that may affect snow quality. Forecast snowfall depth and recent snowfall are good indicators of what to expect.
Use historical data and recent snow reports to understand past snow conditions and anticipate future changes.