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If you planning to travel to Rushmore Cave, Keystone, South Dakota, here is your 6-day travel weather forecast to make sure you have all the essentials needed during your stay. Start your day when the sunrises at 11:48 AM. The temperature feels like 40.9 with a humidity level of 58 so dress accordingly. Cloud coverage is 43 percent with visibility at 14.9 percent. Today’s UV index is 5, don’t forget the sunscreen if you need it! Today’s winds are traveling west-northwest at a speed of 6 MPH. At the end of the day don’t miss the sunset at 1:55 AM.
