Summers in Dallas are very hot and humid. Average highs in July and August often reach ~96 °F (35 °C), with nighttime lows around 77 °F (25 °C). Heat indices frequently push the perceived temperature above 100 °F. (Dallas Climate) Winters are mild, with occasional cold spells. Snowfall is rare (average ~2.6 inches per year). (Dallas Climate)
Hotels in Arlington, Dallas, or Fort Worth areas will be in high demand during match times. Book well in advance. Stadium parking will likely require pre-booked passes. Park-and-ride with shuttle systems, or remote lots with transit connections, will help reduce traffic congestion.
Dallas is a large metro area with varied neighborhoods. While many areas are safe, others have higher crime rates. Use standard precautions: stay in well-lit places, travel in groups especially at night, secure valuables, and choose lodging in safe, accessible districts.