Overview: Hattiesburg, MSKnown for its charming Southern hospitality, Hattiesburg, MS, offers a climate with warm summers and mild winters. The temperatures throughout the year range from an average low of around 3 °C (37 °F) in January to an average high of 34 °C (92 °F) in the heat of July. Daily sunshine hours can stretch up to an impressive 9 hours in June, making it a season of long days and abundant sunlight. Rainfall is fairly distributed throughout the year, with the wettest month being March, featuring 149 mm (5.86 in) of precipitation and 11 days of rainy days. Relatively high humidity levels persist, giving Hattiesburg a moist and temperate feel, especially during the summer months.