Ice? Rain? ... 40 degree weather is predicted for Rapid City today. Rapid City Weather Forecasts. Get the monthly weather forecast for Rapid City, SD, including daily high/low, historical averages, to help you plan ahead. South Dakota weather reports with current conditions in each city also include a 5-day weather forecast, any local weather alerts, and road conditions with live traffic updates. Get the Rapid City, SD local hourly forecast including temperature, RealFeel, and chance of precipitation. 6 days ago. It looks to reach a crisp 47 degrees. The National Weather Service has issued an air quality alert for dust forRapid City, west of The Gap, effective from 10 a.m. to 5 â¦ Want to know what the weather is now? WXnation.com is your weather and webcam resource. See active alerts in Canada. Get the daily forecast and severe weather alerts in your inbox! Check out our current live radar and weather forecasts for Rapid City, South Dakota to help plan your day First strike at ; most recent strike at . Snow? Track storms, and stay in-the-know and prepared for what's coming. See numerous free, live Rapid City webcam images and streaming webcams, and select traffic cams and your local forecast. Easy to use weather radar at your fingertips! Current conditions at Rapid City, Rapid City Regional Airport (KRAP) Lat: 44.05°NLon: 103.05°WElev: 3202ft. Lightning detected in this zone. Everything you need to be ready to step out prepared. Be prepared with the most accurate 10-day forecast for Rapid City, SD with highs, lows, chance of precipitation from The Weather Channel and Weather.com If you are local to the area in which you need weather information, we encourage you to leave your own South Dakota weather report or traffic update to help other visitors. Lightning Alert. for Rapid City, SD, US. Weather Underground provides local & long-range weather forecasts, weatherreports, maps & tropical weather conditions for the Rapid City area.