Climate Change Chart of Frankfort, USA

Overview of climate changes

Temperature changes

Monthly mean temperature was higher by a mean difference of +0.85 °C averaged across calendar months; 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 December, with a difference of +2.22 °C. That identifies the strongest increase among the monthly comparisons, rather than implying that every month warmed by the same amount.

Changes in rainfall

Mean daily rainfall had a mean difference of +0.45 mm/day averaged across calendar months, so the aggregate comparison is higher in the more recent period; it is not a day-weighted annual average or a monthly rainfall total. The largest monthly increase occurred in July, with a difference of +1.64 mm/day, while November had the largest decrease, at a difference of -1.00 mm/day. These contrasting month-specific changes show why the mean increase should not be read as a rise in rainfall in every month.

Changes in snowfall

Mean daily snowfall had a mean difference of +0.06 mm/day averaged across calendar months, indicating a higher aggregate monthly mean in the more recent period. This is an unweighted comparison of monthly means, not a day-weighted annual average or a monthly snowfall total. The largest monthly increase was in February, with a difference of +0.86 mm/day, while the largest decrease was in December, at a difference of -0.96 mm/day. The contrasting monthly changes mean that the small overall mean difference should not be taken to describe the direction of snowfall change in each month.

Changes in sunshine duration

Mean daily sunshine duration had a mean difference of -0.10 hours/day averaged across calendar months, indicating a lower aggregate monthly mean in the more recent period; this is not a day-weighted annual measure. The largest monthly decrease was in August, with a difference of -0.42 hours/day. By contrast, November recorded the largest increase, with a difference of +0.30 hours/day, so the overall mean decrease does not describe every month.