How long your flags last depends largely on how they are displayed. A flag that is flown outside all day and night, as well as flags that fly outside during heavy rain, snow, or wind, will wear out a lot more quickly than a flag that is only displayed some of the time, or one that is brought in during inclement weather. The government standard for street flags is six to eight months, so you can expect your flag to last at least that long. If you want to get more use out of your printed street flags, bring them indoors during bad weather and at night.