Cheyenne 15 Day Forecast, com Detailed forecast in Cheyenne for 10 days. See 15 day weather forecast calculated with an ensemble forecast that gives the probability of events for Cheyenne, WY, State of Wyoming, US 11 hours ago · Here is the API 14 day weather forecast for Cheyenne, Wyoming. Weather forecasts for today and tomorrow are shown in detail every hour. 81°W Elev: 6116ft. Stay informed about today's weather conditions in Cheyenne. You can find accurate Cheyenne weather forecasts on the 15-day, 20-day and 90-day pages. Air temperature, wind speed, humidity and pressure. Be prepared with the most accurate 10-day forecast for Cheyenne, Wyoming 82009 with highs, lows, chance of precipitation from The Weather Channel and Weather. Note: The 7-day weather forecast for Cheyenne, WY is the most reliable and accurate weather forecast. 16°N Lon: 104. a39f, trx72, oz9, qk, w82, qncmux, nb, 5lw, gyp, 3auwox,