Most throw blankets are made from materials that dry relatively quickly compared to regular blankets. For instance, a cotton or wool blanket typically takes less than three hours to dry in a dryer. However, thicker blankets can take more time. Drying outside can take even longer, depending on the weather. While the exact drying time will vary depending on the fabric and the size of the blanket, most throw blankets will be dry within a couple of hours. Of course, weather conditions also play a role, so if it's humid outside, it may take a bit longer for your blanket to dry completely.