San Marcos CISD will operate on a two-hour delay schedule Friday. Bus schedules will also be on a two-hour delay. Original post: Hays CISD cancels Friday classes because of dangerous road conditions Snowy conditions that began Thursday night have caused area school districts, including Hays CISD, to close school on Friday. San Marcos CISD has said a decision will be made on whether to delay or cancel classes by 6 a.m. Friday. The National Weather Service has issued a hazardous weather outlook and winter weather warning for Hays County and is forecasting widespread freezing temperatures tonight across South Central Texas. Freezing temperatures are expected through 9 a.m. Friday morning. Austin Community College will open at 10 a.m. Friday.