The daily minimum, maximum and mean temperature data at 37 weather stations in Iran from 1960 to 2018 were analyzed for their homogeneity and trend. Of these, only 10 stations passed the homogeneity test successfully without any break point or outlier. Approximately 75% of the breaks could be explained by the station relocation. Annual and seasonal anomalies of the homogenized series were calculated using the 30-year period of 1961–1990 as the reference. The regional trend of temperature was estimated using the mean annual and seasonal anomalies from stations that showed similar variability. The mean temperatures showed a positive trend over most of the 10 regions in Iran, with the rate of change varying from 0.1 to \(0.4^{\circ }\) C/decade. The minimum temperatures increased significantly in all the regions at the rate of 0.35– \(0.63^{\circ }\) C/decade, with the highest warming occurring over the central area of Iran in autumn. The maximum temperatures showed a positive trend over all the 10 regions with the exception of the east area. The associated rate of change varied from 0.14 to \(0.29^{\circ }\) C/decade. The highest increase occurred over the Northeastern area during spring.

分析了伊朗 37 个气象站 1960 年至 2018 年每日最低、最高和平均温度数据的同质性​​和趋势。其中，只有 10 个站点成功通过了均匀性测试，没有出现任何断点或异常值。大约 75% 的中断可以由车站搬迁来解释。以 1961 年至 1990 年的 30 年期间为参考，计算均质序列的年度和季节性异常。使用来自表现出类似变异性的站点的年平均和季节性异常估计区域温度趋势。伊朗 10 个地区中的大部分地区平均气温呈正趋势，变化率从 0.1 到\(0.4^{\circ }\)C/十年。所有地区的最低气温均以 0.35– \(0.63^{\circ }\) C/decade的速率显着升高，其中伊朗中部地区秋季升温幅度最大。除东部地区外，10个地区的最高气温均呈上升趋势。相关的变化率从 0.14 到\(0.29^{\circ }\) C/decade。春季增幅最大的是东北地区。