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December 2025: Second Driest December in Two Decades at Binningen Station

Published: January 6, 2026  ·  Period: 2025-12-01 – 2025-12-31

December 2025 at the NBCN weather station in Binningen was notably dry, with only 11.4 mm of precipitation, making it the second driest December in the past 20 years, and experienced moderate temperatures ranging from 15.0°C to -7.6°C, without any extreme weather events. Despite the low precipitation and moderate temperatures, December 2025 did not break any historical temperature records and was slightly warmer than the 20-year average.

Weather Report for December 2025

December 2025 at the NBCN weather station in Binningen was marked by a notable range of temperatures and exceptionally low precipitation. The highest temperature recorded was 15.0°C on December 8th, while the lowest temperature dropped to -7.6°C on December 31st. The month experienced a total precipitation of only 11.4 mm, making it the second driest December in the past 20 years, surpassed only by December 2016, which had 3.3 mm of precipitation. There were no ice days, summer days, hot days, or tropical nights, but there were three frost days.

In terms of historical significance, December 2025 did not break any all-time temperature records. The highest temperature of 15.0°C ranks as the 9th warmest December day over the last two decades. The record for the highest December temperature remains with December 2013, which reached 17.1°C. On the precipitation front, this December's low total of 11.4 mm stands out as a significant deviation from the historical average of 65.4 mm, emphasizing the unusually dry conditions.

Comparing December 2025 to previous years, it was not among the warmest or coldest months, with an average temperature of 3.77°C, slightly above the 20-year average of 3.43°C. The lack of significant precipitation events is noteworthy, as the maximum daily precipitation was only 5.3 mm, recorded on December 6th, far below the threshold of 20 mm that would typically highlight a particularly wet day.

Overall, December 2025 was characterized by its dryness, ranking as the second driest December in the last 20 years, and maintaining moderate temperatures without reaching extreme highs or lows. This month stands out for its lack of precipitation, contrasting sharply with the wetter Decembers of the past two decades.


Table 1: Comparison of December 2025 Weather with Historic December Data since 2000
Parameter Month of interest Since 2000
Avg Temperature °C 3.8 3.3
Min Temperature °C 0.7 -5.5
Max Temperature °C 15.0 18.1
Avg Precipitation mm 11.4 59.5
Min Precipitation mm None 3.3
Max Precipitation mm None 128.3

Figure 1: Precipitation Trend in December in the last 20 Years

Figure 1: Trend in December in Temperature in the last 20 Years

Data source: Opendata Basel-Stadt
Additional resources: Meteostat, Station Binningen

🤖 This text was generated with the assistance of AI. All quantitative statements are derived directly from the dataset listed under Data Source.