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If you planning to travel to Big Thunder Gold Mine, 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 1:21 PM. The temperature feels like 60.35 with a humidity level of 27 so dress accordingly. Cloud coverage is 5 percent with visibility at 14.9 percent. Today’s UV index is 0, don’t forget the sunscreen if you need it! Today’s winds are traveling southwest at a speed of 9 MPH. At the end of the day don’t miss the sunset at 11:52 PM.
