Summer 2012: 3rd Warmest Summer in the Last 118 Years

JJA temperatures 1895-2012
Figure 1. Delaware statewide June - August temperature from 1895-96 through 2011-2012.

Preliminary data from the National Climatic Data Center indicates that the summer (JJA) of 2012 was the 3rd warmest across Delaware since records began in 1895.

The June through August 2012 mean temperature of 76.9 degrees Fahrenheit was nearly three degrees above the 1895-2012 average (Figure 1).

Figure 2. Delaware statewide June - August precipitation from 1895-96 through 2011-2012.

The last three summer seasons have ranked as the three warmest summers since records began, with 2010 being the warmest, 2011 the second warmest and this year the third warmest on record.

The statewide June through August precipitation average of 9.72” was more than three inches below the 1895-2012 average, making 2012 the 29th driest summer season since 1895 (Figure 2).

Although the final data may change the rankings slightly, it is clear that summer 2012 was unusually warm and dry across the First State.

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Delaware Environmental Observing System
Delaware Geological Survey
UD College of Earth, Ocean, and Environment