Climate Change Chart of dallas, USA

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference/change of +1.26 °C compared with the earlier reference period. This is an unweighted mean of the monthly means, not a day-weighted annual average, and it describes the aggregate rather than a change in every month. The largest monthly increase was in March, at a difference/change of +2.36 °C; these figures concern monthly mean temperature, not daytime maximum temperatures.

Changes in rainfall

Mean daily rainfall averaged across calendar months had a difference/change of +0.83 mm/day in the more recent period. This unweighted comparison of monthly means is not a day-weighted annual average, and it does not mean rainfall increased in every month. The monthly pattern included an increase of +2.88 mm/day in October, while April had a decrease of -1.04 mm/day. These are differences in mean daily amounts, not monthly rainfall totals.

Changes in sunshine duration

Mean daily sunshine duration averaged across calendar months had a difference/change of -0.11 hours/day compared with the earlier reference period. This is an unweighted mean of monthly averages, rather than a day-weighted annual figure, and does not imply the same change in every month. The contrasting monthly differences include an increase of +0.46 hours/day in April and a decrease of -0.54 hours/day in November.

Changes in snowfall

Mean daily snowfall averaged across calendar months had a difference/change of -0.06 mm/day in the more recent period. This unweighted mean summarizes monthly means, not day-weighted annual snowfall, and does not indicate that every month changed by the same amount. The largest monthly increase was in February, with a difference/change of +0.21 mm/day, while the largest monthly decrease was in January, with a difference/change of -0.50 mm/day. These figures describe mean daily snowfall amounts, not monthly totals.