Climate Change Chart of Amman, Jordan

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of +1.64 °C compared with the earlier reference period. This is an unweighted average of monthly means, not a day-weighted annual average, and describes the overall monthly-average comparison rather than every month or daytime maximum temperatures. The largest monthly increase in mean temperature occurred in March, with a difference of +2.53 °C. This identifies the strongest increase among the supplied monthly differences; it does not imply that every month warmed by the same amount.

Changes in rainfall

Averaged across calendar months, mean daily rainfall had a difference of +0.41 mm/day in the more recent period. This unweighted mean of monthly means is not a day-weighted annual average, and it describes daily rainfall averages rather than monthly totals or a uniform change in every month. The largest monthly increase in mean daily rainfall was in February, at a difference of +1.30 mm/day. This marks the strongest increase in the supplied monthly comparisons, not a monthly rainfall total.

Changes in sunshine duration

Averaged across calendar months, mean daily sunshine duration had a difference of -0.14 hours/day compared with the earlier reference period. This unweighted average of monthly means is not a day-weighted annual average, and does not mean that the same decrease occurred in each month. The largest monthly decrease in mean daily sunshine duration occurred in February, with a difference of -0.40 hours/day. The figure describes the daily mean for that month, rather than a total amount of sunshine over the month.

Changes in snowfall

Averaged across calendar months, mean daily snowfall is unchanged at the displayed precision, with a difference of 0.00 mm/day. This rounded mean does not establish that snowfall was absent or that individual months were unchanged. Monthly differences varied in direction: the largest increase in mean daily snowfall was in January, at a difference of +0.15 mm/day, while the largest decrease was in February, at a difference of -0.20 mm/day. These are daily means, not monthly snowfall totals.