Weather summary for September 2025 in Binningen (NBCN Station)

September 2025 in Binningen was marked by a notable range in temperatures, with the highest reaching 29.1°C on the 20th and the lowest dipping to 6.9°C on the 28th. The month experienced a significant rainfall event on the 21st, where precipitation peaked at 45.2 mm, well above the 20 mm threshold for noteworthy rainfall. There were six summer days recorded, but no hot days or tropical nights.

Historically, this September did not break any temperature records but was ranked 9th in terms of maximum temperature over the past 20 years. The highest recorded September temperature in this period was 32.1°C in 2024. In terms of precipitation, the total for September 2025 was 138.9 mm, which is considerably higher than the 20-year average of 70.18 mm, indicating a wetter than usual month.

Overall, September 2025 was wetter than the historical norm, with temperatures within the typical range for the past two decades. This month stands out for its above-average rainfall compared to previous years.

Source: Opendata Basel-Stadt
Weather archive: https://meteostat.net/de/station/06601