September in Spring Hill averages a daily high of 32°C with nights around 21.3°C. Expect roughly 13.4 wet days totalling 160.3mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Spring Hill is November–April.
Based on BROOKSVILLE HERNANDO CO AIRPORT, FL US (7km), 1995–2024. 29 years of September data.