Warminster was founded in 1711 and named for Warminster in Wiltshire, England. For its first two centuries, Warminster was a rural community. In World War II, Naval Air Development Center, Johnsville (later Naval Air Warfare Center Warminster) opened in the township on grounds formerly belonging to the Brewster Aeronautical Corporation. This base was first used for weapons development and testing airplanes and was later used as a training center for astronauts. Warminster would rapidly grow into a suburban community following the war. In 1996, Naval Air Warfare Center Warminster was closed. The former base was redeveloped, with Warminster Community Park taking a portion of the grounds. }} Warminster has a humid subtropical climate with four seasons. Summers are hot and humid, with highs averaging in the 80s and lows averaging in the 60s. Summer temperatures occasionally rise to the 90s or 100s. Winters are cool to cold, with highs averaging in the upper 30s to low 40s and lows averaging in the 20s. Winter temperatures can occasionally drop down to 0 degrees or lower. Spring and fall can be variable, usually with milder weather. Warminster averages 48.2 inches of precipitation a year, which is fairly evenly distributed throughout the year. The area does see snow in the winter months, with some winters seeing only light snow and other winters bringing large snowstorms. In the warmer months, the area does experience thunderstorms, some of which can be severe. Warminster is prone to tropical storms and hurricanes from the Atlantic basin in the late summer and early fall, but typically only receives the remnants of such storms as they typically weaken by the time they reach this latitude.