Climate Change Chart of Beaver Creek, USA

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of +1.30 °C compared with the earlier reference period; this is an unweighted average of the monthly means, not a day-weighted annual average or a statement about every month. The largest monthly increase was in June, at a difference of +2.61 °C. In contrast, October had the largest monthly decrease, a difference of -0.84 °C. These monthly values describe means, not daytime maximum temperatures.

Changes in snowfall

Mean daily snowfall was higher on an unweighted average across calendar months, with a difference of +0.31 mm/day. The largest monthly increase occurred in April, where the difference was +1.98 mm/day; the largest monthly decrease was in November, at a difference of -1.38 mm/day. These are daily mean amounts, not monthly totals, and the overall difference does not imply the same direction in every month.

Changes in rainfall

Mean daily rainfall, rather than monthly rainfall totals, was higher on average across calendar months: the unweighted monthly-mean difference was +0.22 mm/day. The largest monthly increase occurred in August, with a difference of +1.16 mm/day. July moved in the opposite direction, recording the largest monthly decrease, a difference of -0.25 mm/day. These comparisons describe differences between reference-period averages, not a continuous progression or a uniform change across months.

Changes in sunshine duration

Across calendar months, mean daily sunshine duration had an unweighted average difference of -0.02 hours/day compared with the earlier period. This small negative difference is an aggregate across monthly means and does not establish that sunshine decreased in every month. The largest monthly increase was in June, with a difference of +1.65 hours/day, while October saw the largest monthly decrease, a difference of -0.71 hours/day.