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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 1:24 PM. The temperature feels like 37.400000000000006 with a humidity level of 76 so dress accordingly. Cloud coverage is 66 percent with visibility at 10.7 percent. Today’s UV index is 3, don’t forget the sunscreen if you need it! Today’s winds are traveling west at a speed of 10 MPH. At the end of the day don’t miss the sunset at 11:49 PM.
