The featured chart presents yearly number of hours that the heat index was at or above a given temperature. The hourly observations reported by the automated weather stations are assumed to persist for that local hour of time. The blue dots represent yearly averages while the red dots are actual totals for this year. Of course, this year has plenty of summer left, but totals so far are about half of normal. For this chart, the heat index is only included when its computed value is equal to or greater than the actual air temperature. You can generate this chart for other sites in the country to compare with Des Moines shown in the featured chart.

Voting:
Good = 23
Bad = 14
Abstain = 9

Tags:   heatindex