North Korea’s opaque decision-making on missile activity keeps probabilities for September 2026 clustered between one and three tests, as traders weigh Pyongyang’s pattern of responsive launches against the absence of major scheduled catalysts early in the month. Short-range ballistic missile barrages in August, including more than ten projectiles on August 20 amid the tail end of U.S.-South Korea drills, illustrate how Pyongyang uses testing to signal resolve or protest joint exercises, yet the pace can drop sharply when diplomatic overtures surface, such as recent U.S. signals about potential leader-level engagement. Historical monthly variation, driven by internal military priorities and external events like sanctions enforcement or regional summits, further compresses the spread across the 1-, 2-, and 3-test outcomes. Separation could occur through fresh joint military maneuvers, explicit diplomatic breakthroughs or breakdowns involving the United States, or public statements from North Korean leadership that alter the near-term testing calendar before September ends.