Average Weather in Stephenville Texas, United States. In Stephenville, the summers are hot and muggy, the winters are cold and windy, and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 35Â°F to 94Â°F and is rarely below 23Â°F or above 100Â°F.
Due to the moderating effect of the ocean, temperatures are cooler than more inland areas of Orange County, where temperatures frequently exceed 90 Â°F (32 Â°C) and occasionally reach 100 Â°F (38 Â°C). The period of November through March is somewhat rainy, as shown in the table to right.
Comments. Submit. Orange and other citrus trees are hardy in USDA zones 9 to 10 and, in general, do not grow well in the ground in colder climates. There are some varieties that can withstand temperatures down to 10 degrees.range and other citrus trees are hardy in USDA zones 9 to 10 and, in general, do not grow well in the ground in colder climates.