Traveling to Jewel Cave National Monument, Custer, South Dakota? Here is your 6-day weather forecast in the area. Whether it is a warm weather destinations or cold climate don’t forget to consider weather, while you pack your bags for this trip. Start your day when the sunrises at 1:51 PM and don’t miss the sunset at 11:29 PM. Today’s winds are traveling west-northwest at a speed of 17 MPH. The temperature feels like 20 with a humidity level of 72. Cloud coverage is 32 percent with 11.9 percent visibility. Today’s UV index is 0 make sure to prepare properly. Make sure to plan your travel itinerary to match your travel weather forecast to make the most of your vacation with Reservations.com.