Weather significantly impacts battery performance:
Temperature effects: Battery efficiency typically drops 20-40% in cold weather (below 10°C/50°F). Pre-warm batteries to room temperature before flight, but never heat them directly. In hot weather (above 35°C/95°F), avoid flying as heat can damage cells. Wind resistance can reduce flight time by 30-50%, so always check weather conditions before flying. For optimal performance, operate between 10-35°C (50-95°F) and keep batteries protected from extreme conditions during storage and transport.