If you planning to travel to Big Treehouse, Marshalltown, Iowa, 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 12:58 PM. The temperature feels like 35.15 with a humidity level of 81 so dress accordingly. Cloud coverage is 1 percent with visibility at 12 percent. Today’s UV index is 3, don’t forget the sunscreen if you need it! Today’s winds are traveling east-southeast at a speed of 11 MPH. At the end of the day don’t miss the sunset at 10:52 PM.