The National Weather Service has issued a freeze warning for the South Central Texas region, including Bexar County, from midnight Tuesday night to 8 a.m. Wednesday.
Forecasters said they expected sub freezing temperatures as low as 29 degrees. But, they added, there are "lower chances for freezing temperatures near urban areas between San Antonio and Austin" and communities closer to the Gulf Coast.
They warned that frost and freeze conditions may kill crops and other vegetation and may also damage exposed outdoor plumbing. They advised residents to bring plants inside before late Tuesday night.
Winds will be gusty at times, between 20 and 30 miles per hour, from Tuesday through Thursday.
Also, fire experts advised people who use space heaters to inspect them for any broken parts or loose plugs.
Heaters should be placed at least three feet away from clothing, rugs, and anything that can burn. Owners should plug heaters into a wall outlet, not an extension cord. Before leaving a room or going to sleep, turn off the heater.
Residents should also check their smoke detectors.
The cold front will be a dry one and not trigger any showers. Little more than 23 inches of rain has fallen at the airport all year, a rainfall deficit of nearly eight inches for an average year.
