Aspen, CO Weather Forecast
Pitkin County, Colorado
Seven-day outlook
28–54°F across the weekThe week runs between 28° and 54°, with tomorrow the warmest day of it. The second half leans cooling, and Monday is the coolest day in it. Sunday is the wettest day, peaking near 98%. 3 of the 7 days stay dry.
Forecasts come from the National Weather Service's own computer models, and current conditions from the nearest reporting weather station. Both are served through the weather API. A forecast is guidance, not a warning, and anything the Weather Service has actually issued is on the live map.
The written summaries on this page are generated from the forecast data above, not by a meteorologist. Each sentence is a reading of the same numbers you can see, and no forecaster has reviewed them.
About the Aspen forecast
Aspen sits at 39.1952°N, 106.8368°W in Pitkin County, Colorado. The forecast above is drawn for that point from the National Weather Service's own computer models: a seven-day outlook, and a finer-grained one covering the next eighteen hours where it reaches, and the radar and alert panels show what the Weather Service has out over the area right now.
- County
- Pitkin County
- Coordinates
- 39.1952°N, 106.8368°W
- Population
- 6,612 · 2023 estimate
- Land area
- 3.863 sq mi
Place data from the US Census Bureau. Coordinates are the Census internal point for Aspen, and the forecast is for that location, not for every address inside the city limits, and a large city can have real weather differences from one side to the other.
How well can the network see Aspen?
The nearest Doppler radar is KGJX (Grand Junction, CO), 74 miles to the W. A WSR-88D's lowest routine scan sits half a degree above horizontal, and the earth curves away beneath it, so by the time that beam reaches Aspen its center is about 6,200 ft above ground. That is far enough out that the beam has climbed above the lowest few thousand feet. Storm structure aloft is visible; a shallow circulation near the ground may not be, and a warning here can arrive before anything looks dramatic on the radar picture.
The closest instrument actually measuring the air is KASE · Aspen/Pitkin Cnty on the ASOS/AWOS network, 3.0 miles away. Close enough that its readings are, for practical purposes, the conditions in town.
Beam height is the standard 4/3-earth approximation for the 0.5° scan and assumes normal refraction; it is where the center of the beam is, not its edges, and unusual temperature profiles bend it. Radar siting from the NWS WSR-88D network, station positions from the Colorado observing network as of this build.
Forecasts near Aspen
- Snowmass Village, CO6 mi
- Basalt, CO16 mi
- Carbondale, CO25 mi
- Leadville, CO29 mi
- Gypsum, CO30 mi
- Eagle, CO31 mi
- Avon, CO35 mi
- Glenwood Springs, CO36 mi
Elsewhere in Colorado
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