Journal of Scientific Research and Reports

This study analysed minimum temperature trends in Nagpur, India, from 1985 to 2024, based on daily data from the District Agromet Unit of ICAR - Central Institute for Cotton Research. Temperature data were aggregated into monthly, seasonal, and annual values using Weather Cock15 software, with a focus on evaluating long-term and decadal trends. During 1985-1994, the annual minimum temperature showed a slight, non-significant decrease of 0.014°C, with small declines in both the Southwest (SW) and Northeast (NE) Monsoon seasons, as well as in winter. The most notable change was a 0.133°C decrease in September, which was significant at the 90% confidence level. In the subsequent decade, from 1995-2004, the annual minimum temperature increased by 0.050°C, though this was non-significant. Winter and summer temperatures both showed non-significant increases of 0.200°C, while April stood out with a significant increase of 0.300°C at the 95% confidence level.

During, 2005-2014, the annual minimum temperature decreased slightly by 0.017°C, with the NE Monsoon showing a minor decline. December recorded a significant decrease of 0.250°C at the 95% confidence level. However, in the most recent decade (2015-2024), a clear warming trend emerged, with the annual minimum temperature rising by 0.167°C, significant at the 90% confidence level. The NE Monsoon showed a substantial increase of 0.320°C, and both January and December experienced significant increases, with December showing the largest rise of 0.500°C, significant at the 99% confidence level.