Climate Change Chart of Lucknow, India

Overview of climate changes

Temperature changes

Averaged across calendar months, the difference in monthly mean temperature was -0.44 °C; this is an unweighted comparison of monthly means, not a day-weighted annual average or a measure of daytime maximum temperatures. The largest monthly increase was in October, with a difference of +1.26 °C. By contrast, May had the largest monthly decrease, a difference of -2.65 °C. These identify the strongest month-specific changes in the comparison, rather than a continuous trend.

Changes in rainfall

Averaged across calendar months, mean daily rainfall had a difference of -0.02 mm/day. This unweighted mean of monthly averages describes the overall comparison, not rainfall in every month; the figures are daily means rather than monthly totals. The strongest monthly increase was in June, where mean daily rainfall had a difference of +1.51 mm/day. The largest decrease came in August, with a difference of -1.81 mm/day, showing that the monthly pattern was not uniform.

Changes in sunshine duration

Across calendar months, the unweighted mean difference in daily sunshine duration was -0.08 hours/day. This summarizes the monthly averages, rather than implying the same difference for each month or describing day-weighted annual sunshine. The largest monthly increase in mean daily sunshine was in August, at a difference of +1.46 hours/day. In June, sunshine had the largest monthly decrease, with a difference of -1.04 hours/day; these month-specific differences qualify the small overall mean change.