Climate Change Chart of Juarez City, Mexico

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of +2.30 °C in the more recent period; 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 March, with a difference of +3.37 °C compared with the earlier reference period. This identifies the strongest reported monthly increase, rather than implying that every month warmed by the same amount.

Changes in snowfall

Averaged across calendar months, mean daily snowfall shows a difference of -0.08 mm/day in the more recent period. This unweighted comparison concerns daily amounts represented by monthly means, not monthly snowfall totals; it does not imply an identical decrease in every month. The largest monthly decrease was in January, with a difference of -1.36 mm/day, whereas the largest monthly increase was in December, with a difference of +0.25 mm/day. The opposing monthly changes provide context for the smaller overall mean difference.

Changes in sunshine duration

Mean daily sunshine duration, averaged across calendar months, shows a difference of -0.18 hours/day compared with the earlier reference period. This is an unweighted comparison of monthly means, not a statement that daily sunshine declined by the same amount in every month. The largest monthly increase occurred in January, with a difference of +0.33 hours/day, while the largest monthly decrease occurred in August, with a difference of -0.51 hours/day. These are monthly mean daily-hour differences, not measures of day-to-day variability.

Changes in rainfall

Averaged across calendar months, mean daily rainfall shows a difference of -0.03 mm/day in the more recent period. This unweighted mean of monthly means describes daily amounts, not monthly rainfall totals, and does not mean that rainfall decreased in every month. The largest monthly increase was in August, with a difference of +0.37 mm/day; the largest monthly decrease was in September, with a difference of -0.32 mm/day. These contrasting monthly shifts show why the overall mean should not be read as a uniform change throughout the year.