SpaceX's aggressive shift of Florida-based Starlink missions to Starship has sharply reduced Falcon 9 cadence for September 2026, with most remaining launches concentrated at Vandenberg. As of September 10, roughly four to five Falcon 9 flights have occurred early in the month, and the current manifest lists only a handful more through September 20, including USSF-153, O3b mPOWER, USSF-259, and one additional Starlink batch. The scheduled Starship Flight 14 test around mid-month represents the main variable that could add a launch, yet its orbital debut carries execution risk and limited near-term repeat potential. Traders therefore assign an 89% implied probability to fewer than 12 total SpaceX launches for the month.