Climate Change Chart of Guadalajara, Mexico

Overview of climate changes

Temperature changes

Monthly mean temperature was higher by a difference of +1.32 °C averaged across calendar months; this is an unweighted average of the monthly means, not a day-weighted annual average or a description of every month. The largest monthly increase was in April, with a difference of +1.82 °C. These figures describe monthly mean conditions, not daytime maximum temperatures, and compare the two reference periods rather than showing a continuous trend.

Changes in rainfall

Mean daily rainfall differed by +0.07 mm/day averaged across calendar months, an unweighted summary of monthly means rather than a day-weighted annual average or monthly rainfall total. Changes varied by month: in September, mean daily rainfall had an increase of +1.27 mm/day, while in June it had a difference of -0.76 mm/day. These monthly examples show why the small positive mean should not be taken to mean rainfall increased in every month; the comparison is between reference-period averages, not a continuous trend.

Changes in sunshine duration

Mean daily sunshine duration showed a difference of -0.11 hours/day averaged across calendar months; this unweighted average of monthly means does not imply the same change in every month. The largest monthly increase occurred in January, at +0.28 hours/day, whereas the largest monthly decrease occurred in November, at -0.34 hours/day. These are differences in mean daily hours for the named months, not evidence of a continuous trend between the reference periods.