Cheyenne, WY Weather Forecast
Laramie County, Wyoming
Seven-day outlook
33–61°F across the weekThe week runs between 35° and 61°, with tomorrow the warmest day of it. The second half leans cooling, and Monday is the coolest day in it. Monday is the wettest day, peaking near 53%. 4 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 Cheyenne forecast
Cheyenne sits at 41.1273°N, 104.7902°W in Laramie County, Wyoming. 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
- Laramie County
- Coordinates
- 41.1273°N, 104.7902°W
- Population
- 65,168 · 2023 estimate
- Land area
- 36.336 sq mi
Place data from the US Census Bureau. Coordinates are the Census internal point for Cheyenne, 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 Cheyenne?
The nearest Doppler radar is KCYS (Cheyenne, WY), 1.9 miles to the NNW. 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 Cheyenne its center is about 90 ft above ground. That is about as close as radar coverage gets in the United States: the lowest scan is still near the ground when it reaches Cheyenne, so low-level rotation and the leading edge of a gust front show up on it. Cheyenne is closer to its radar than 99% of US cities.
The closest instrument actually measuring the air is KCYS · Cheyenne Rgnl on the ASOS/AWOS network, 2.3 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 Wyoming observing network as of this build.
Forecasts near Cheyenne
- Wellington, CO32 mi
- Ault, CO37 mi
- Eaton, CO42 mi
- Timnath, CO42 mi
- Fort Collins, CO43 mi
- Severance, CO43 mi
- Laramie, WY44 mi
- Windsor, CO45 mi
Elsewhere in Wyoming
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