The weather observed at GRAND PRAIRIE, TX (KGPM) at 12:50 PM CST was: The skies were cloudy. The weather reported was moderate rain. Temperature: 34F ( 1C) Dewpoint: 34F ( 1C) Relative Humidity: 100% Winds from the NW (310 degs) at 12 mph. Altimeter:30.33 inches of mercury. The prevailing visibility was 3 miles.