If you planning to travel to Crystal Lake Park, Crystal Lake, 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 10:22 AM. The temperature feels like 70.95 with a humidity level of 44 so dress accordingly. Cloud coverage is 38 percent with visibility at 5.6 percent. Today’s UV index is 0, don’t forget the sunscreen if you need it! Today’s winds are traveling southwest at a speed of 7 MPH. At the end of the day don’t miss the sunset at 1:33 AM.