While returning from Mexico, the pilot landed at Eagle Pass, TX and cleared U.S. Customs. Without refueling or obtaining a weather briefing, he continued toward his home airfield at the Flying L Ranch near Bandera, TX. Local weather observations indicated that there were thunderstorms and heavy rains at the Flying L Ranch, but only light rain to the south. Approaching from the south, the pilot flew over the ranch of a business associate, then proceeded north toward the Flying L Ranch. Shortly thereafter, the pilot returned. By this time, light precipitation was just beginning while lightning and heavier rain showers were observed to the north. The wind was from 270 deg at 20, gusting 25 kts. The pilot approached an open field behind his friend's property from the north, landed, then initiated a go-around. During the go-around, the plane hit the tops of 3 trees, pitched nearly straight up into a half loop, then struck the ground in a nose low attitude. There was 20 to 25 gal of fuel remaining.