Climate Change Chart of Stuttgart, Germany

Overview of climate changes

Temperature changes

Averaged across calendar months, the monthly mean temperature difference was +1.58 °C; this unweighted comparison summarizes monthly means rather than daytime maximum temperatures, and does not imply the same change in every month. The largest monthly increase was in January, at +4.29 °C, while April had the largest decrease, -0.11 °C. These extrema show that monthly differences varied, even as the overall mean difference was upward.

Changes in snowfall

Mean daily snowfall, averaged across calendar months, had a difference of -0.44 mm/day. This unweighted comparison of monthly means is not a day-weighted annual average or a monthly total, and the average does not describe every month’s change. The largest monthly decrease was in February, with a difference of -2.02 mm/day, while the largest increase occurred in April, at +0.25 mm/day. These opposite monthly shifts indicate variation in the comparison, not the absence of snowfall in either period.

Changes in rainfall

Mean daily rainfall, averaged across calendar months, had a difference of +0.32 mm/day compared with the earlier reference period. This is an unweighted mean of monthly means, not a day-weighted annual average or a measure of monthly rainfall totals; it does not mean every month was wetter. The largest monthly increases were tied in August / October, each with a difference of +0.84 mm/day. By contrast, April had the largest decrease, -0.21 mm/day, illustrating that the mean shift did not apply uniformly across the calendar.

Changes in sunshine duration

Averaged across calendar months, mean daily sunshine duration had a difference of -0.23 hours/day in the more recent period. This unweighted summary of monthly means does not indicate that daily sunshine declined in every month. The largest monthly decrease was in January, with a difference of -0.96 hours/day; the largest increase occurred in April, at +0.25 hours/day. The contrast highlights differing monthly changes rather than a uniform shift throughout the year.