Human responses to climate change are increasingly constrained, underscoring the urgent need for intensified global mitigation efforts. Here, we examine abrupt shifts and long-term trends in temperature, precipitation, and sunshine duration in Handan City, Hebei Province, from 1955 to 2020. Our results indicate a pronounced increase in mean temperature, with a striking rise of 13.5°C over 66 years, corresponding to 0.21°C per decade. The Mann-Kendall test identified an abrupt temperature shift in 1999. Precipitation showed a significant decline of 20.57 mm per decade, with a marked change detected in 2001. Sunshine duration also exhibited a pronounced decrease, with a loss of 88.82 hours per decade and an average annual sunshine duration of 2,377.1 hours. The most significant reduction in sunshine hours occurred in 1995. These findings underscore profound regional climate shifts over the past six decades.