July 2015 Delaware Climate Near “Normal”

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Figure 1. Delaware statewide mean July temperature (°F) 1895-2015.
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Figure 2. Delaware statewide mean July precipitation (inches) 1895-2015.

July Temperatures

Preliminary data indicates that the statewide average temperature in July was 76.6°F, equal to the 1981-2010 average for the month (Figure 1). Maximum temperatures averaged 0.9°F below normal, while minimum temperatures averaged 0.9°F above normal across Delaware in July.

July Precipitation

Delaware’s statewide precipitation for July 2015 averaged 3.90 inches, just 0.24 inches below the 1981-2010 mean (Figure 2). July’s near normal precipitation followed a very wet June that ranked as the fourth wettest June since records began in 1895.

Statewide Spatial Averages

Temperatures were near normal across most of the State while the sign and size of anomalies varied from one location to another (Figure 3). Precipitation was below normal across most of Delaware and Chester County, PA except for southern Sussex County and in the Lewes, DE area where strong thunderstorms added to the monthly totals (Figure 4).

July 2015 average temperature departures from the 1981-2010 mean based upon DEOS station data.
Figure 3. July 2015 average temperature departures (°F) from the 1981-2010 mean based upon DEOS station data.
July 2015 precipitation departures (inches) from the 1982-2010 mean based upon DEOS station data.
Figure 4. July 2015 precipitation departures (inches) from the 1981-2010 mean based upon DEOS station data.
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