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GFS
USA · NOAA / NCEPGlobal Forecast System: a numerical model that simulates atmospheric physics.
United States · Colorado
Weather in Purgatory Resort
Nearby destination · Telluride, about 35 km away in a straight line. The photo shows that location, not Purgatory Resort. Murray Foubister · CC BY-SA 2.0 · Image source and modifications
Loading local weather signals…
14-day mountain weather & snow
GFS · ECMWF IFS · AIGFS · AIFS · GEM. Forecast at an indicative destination point; not a summit forecast or live snow depth.
Equal-weight blend of available complete local days. Days 8–14 are less certain; missing data remain blank. Snowfall cm are fresh snow, not snow depth. Sea-level pressure. Terrain temperature downscaling by Open-Meteo; no Agios Stefanos calibration. A point forecast cannot describe every piste or assess avalanche danger. Open-Meteo
Weather history · Purgatory Resort · 2016–2025
This summary uses the destination’s fixed coordinates and the historical service’s terrain elevation. It does not change with the forecast’s manual elevation setting. Mountain terrain, wind redistribution and snowmaking are not fully represented. Snowfall days do not indicate opening days or piste snow depth.
Explore rain and snowfall frequency, monthly average daily lows and highs, and daily temperature extremes within this decade.
The historical summary loads automatically…
| Month | Mean low °C | Mean high °C | Precipitation mm/month | Rain days/month | Snowfall days/month |
|---|
These are ERA5 reanalysis estimates on an approximately 25 km grid, with provider temperature downscaling, rather than station observations or official records. This decade is not a 30-year climate normal.
Rain day: liquid rain ≥1 mm. Snowfall day: modeled new snowfall ≥0.1 cm, which does not imply snow cover. Precipitation includes rain and the water equivalent of snow. Snow frequencies are especially approximate in mountainous and coastal locations.
Monthly averages use complete months and annual averages use complete years for each variable. Temperature extremes use complete available years within this decade. Coverage is shown on the cards and in table cell tooltips. This historical summary does not apply a forecast calibration.
Sources: Open-Meteo Historical Weather API · Copernicus / ERA5
A downhill ski area in Colorado, United States, with mapped lift-served terrain.
Before you go
Check the operator’s current piste map, lift status and access information before setting off.
Plan your visit
Consider temperature, fresh snow and wind together. Conditions at the base may differ from the upper slopes. Set an elevation in the forecast to explore a different level of the mountain.
Purgatory Resort: skiing, snow and mountain trips
Purgatory Resort · Colorado, United States. A downhill ski area in Colorado, United States, with mapped lift-served terrain. Check the operator’s current piste map, lift status and access information before setting off.
Mapped terrain in Purgatory Resort spans approximately 2,696–3,291 m. Compare the forecast elevation with that range when looking at rain versus snow or temperatures at different heights. These are mapping figures, not a report of current open terrain.
Durango is approximately 39 km to the south of this point. Compare the two forecasts if your day includes both locations. This is a straight-line distance, not a road route.
For skiing and snowboarding, distinguish predicted new snowfall from measured snow depth on pistes. Compare wind, temperatures and the selected forecast elevation; a village point is not a lift station or summit. For summer hiking and sightseeing, the same hourly outlook helps you plan around cloud and rain. Check current piste, lift and route updates with the operator.
Around the June solstice, daylight is approximately 14 h 50 min; around the December solstice, 9 h 30 min. This helps plan the time available for an outing or photography. These are approximate astronomical daylight lengths, not sunshine forecasts; cloud and the local horizon can reduce usable light.
Use the 2016–2025 weather history below to compare months using temperature, rain and modelled snowfall. It is a ten-year reanalysis summary, not a 30-year climate normal or a record from a weather station.
Compare places in the directory
- Durango — weather forecastUnited States · ≈ 39 km
- Ouray — weather forecastUnited States · ≈ 47 km
- Pagosa Springs — weather forecastUnited States · ≈ 83 km
- Telluride — snow forecastUnited States · ≈ 35 km
- Wolf Creek Ski Area — snow forecastUnited States · ≈ 94 km
Distances are in a straight line. Remote locations may have distant comparison points. These links do not define a route, lift connection or border crossing.
More weather destinations in United States
Sources: Destination information · OpenStreetMap / OpenSkiData · Daylight calculation reference
Nearby settlements and area
The forecast point is at 37.6233, -107.8357, using the America/Denver time zone. The nearby ski-area links below let you compare conditions across the region.
Mapped ski terrain
- Mapped lifts
- 14
- Mapped elevation range
- 2696–3291 m
From OpenSkiData mapping dated 7 September 2026. Coverage may be incomplete; these figures do not show which lifts or pistes are open today.
Data: OpenSkiData · OpenSkiMap · © OpenStreetMap · ODbL · Skimap.org · Who’s On First · © Mapterhorn
Open geographic dataMore ski areas in the region
Distances are approximate straight-line measurements between map points. They are not driving distances and do not imply a lift or piste connection.
Weather models and where they come from
AIGFS
USA · NOAA / NCEPArtificial Intelligence Global Forecast System: a machine-learning model initialized from NOAA atmospheric analyses.
ECMWF IFS
Europe · ECMWFIntegrated Forecasting System: the intergovernmental European centre’s numerical model. IFS 9 km and IFS 0.25° are products of the same model family on different data grids.
ECMWF AIFS
Europe · ECMWFArtificial Intelligence Forecasting System: this page uses AIFS Single, which produces one forecast scenario.
GEM
Canada · ECCCGlobal Environmental Multiscale: the atmospheric model within Canada’s GDPS. The current system combines numerical prediction with large-scale guidance from the GEML AI model.
The blend uses the values available for each day and variable. Coverage falls as individual models reach their forecast limits. The two IFS products are not independent models. Model spread shows disagreement, not the probability of a weather event.
Wind: maximum daily speed at 10 m and prevailing direction of origin. Direction uses a speed-weighted circular calculation; missing or strongly opposing directions display a dash. 🥶: low below 0°C. 🥵: high above 30°C. 💨 in Conditions: wind at least 40 km/h or gusts at least 60 km/h.
Forecast data: Open-Meteo · NOAA / ECMWF / ECCC.
Weather in other locations
- Agios Stefanos weather — 14-day forecast with GFS, ECMWF IFS, AIGFS, AIFS and GEM
- Weather forecasts for cities and regions of Greece and Cyprus
- Weather forecasts for European cities and regions
- Weather forecasts for locations around the world
- Weather and snow at ski resorts
- Weather forecasts for mountains and peaks
- Weather forecasts for Tierra del Fuego and Patagonia
- Weather forecasts for polar and cold regions
- All weather destinations by country
Open-Meteo and NOAA: where does the forecast come from?
The Source control selects data for widgets, weather maps and forecast tables. Xionia shows the provider used and the loading progress.
Open-Meteo — access to different models
Open-Meteo is a weather data service. It distributes forecasts from weather centres including NOAA, ECMWF and Environment and Climate Change Canada. Each model calculates how the atmosphere may evolve in its own way. Xionia compares the available values for each day and variable using the rules described in the forecast methodology.
NOAA GFS — a direct backup source
NOAA is the US National Oceanic and Atmospheric Administration. Its Global Forecast System, GFS, produces worldwide forecasts. The direct Xionia backup uses a GFS product on a 0.5° grid with 6-hour steps. This describes the product loaded here; other GFS products have different resolutions. Daily values are estimates derived from these steps, and snowfall in centimetres is unavailable from this backup.
Which option should I use?
Automatic tries Open-Meteo first. If a supported forecast request fails, it switches to NOAA. Choosing Open-Meteo or NOAA GFS selects that particular source. The NOAA backup downloads larger files, so its first load may take longer and use more mobile data.
How should I read differences and gaps?
The provider, available model, grid and forecast issue time can change the values. A dash means missing data. Model agreement is not a percentage probability, and days 8–14 have greater uncertainty. Observations from the Agios Stefanos station, historical ERA5 reanalysis and the daily FWI index have their own sources and are unaffected by this control.
Official documentation: Open-Meteo · NOAA / NCEP · GFS