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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 12:56 PM. The temperature feels like 62.900000000000006 with a humidity level of 25 so dress accordingly. Cloud coverage is 18 percent with visibility at 14.9 percent. Today’s UV index is 6, 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 1:06 AM.
