How Often Have We Reached 90 Degrees or Higher?

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The number of days reaching 90 degrees or higher so far in 2014 has been relatively few across the central Ohio Valley; as of September 3rd, there have only been 8 days in Cincinnati, 12 in Columbus, and 5 in Dayton. Based on the 30-year climatological normal period (1981 to 2010), there are on average 21 days each year reaching 90 degrees or higher in Cincinnati, 18 in Columbus, and 14 in Dayton. Below are graphs (as of 9/3) showing the annual frequency of days in the 90s for each of our three climate stations, beginning with the first full year of data on record for each site. Click each graph for a larger version. Click here for the full dataset.