If you planning to travel to Mark Twain Cave, Hannibal, Missouri, 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 12:49 PM. The temperature feels like 48.400000000000006 with a humidity level of 88 so dress accordingly. Cloud coverage is 78 percent with visibility at 9.6 percent. Today’s UV index is 1, don’t forget the sunscreen if you need it! Today’s winds are traveling west-northwest at a speed of 9 MPH. At the end of the day don’t miss the sunset at 10:50 PM.