If you planning to travel to Buffalo Rock State Park, Ottawa, Illinois, 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 11:44 AM. The temperature feels like 32.25 with a humidity level of 31 so dress accordingly. Cloud coverage is 14 percent with visibility at 4.2 percent. Today’s UV index is 5, don’t forget the sunscreen if you need it! Today’s winds are traveling south at a speed of 8 MPH. At the end of the day don’t miss the sunset at 12:18 AM.