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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 12:29 PM. The temperature feels like 33.2 with a humidity level of 60 so dress accordingly. Cloud coverage is 32 percent with visibility at 13.9 percent. Today’s UV index is 6, don’t forget the sunscreen if you need it! Today’s winds are traveling northwest at a speed of 8 MPH. At the end of the day don’t miss the sunset at 1:25 AM.
