**Severe thunderstorms and lightning risks in Washington, D.C., are the dominant factor elevating the implied probability of a weather delay at UFC Freedom 250 to 64.5%.** This outdoor card on the White House South Lawn faces an evening forecast featuring a strong chance of rain, high humidity, and potential severe storms capable of producing lightning strikes. UFC protocols require a 30-minute hold or evacuation for any lightning within eight miles, a rule already applied during the rain-delayed final press conference at the Lincoln Memorial. Dana White has reiterated that the event proceeds regardless of rain or other elements, but he has singled out lightning as the sole credible disruptor, aligning with trader consensus on meaningful delay odds. The unusual outdoor setting heightens sensitivity to these conditions compared with standard arena cards, though no fighter injuries, roster changes, or stylistic matchups factor into the weather-specific market.