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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 1:00 PM. The temperature feels like 54.050000000000004 with a humidity level of 53 so dress accordingly. Cloud coverage is 4 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 south-southwest at a speed of 9 MPH. At the end of the day don’t miss the sunset at 12:21 AM.
