Preliminary data indicates that temperatures were just above the 30-year normal during the spring season. The statewide mean spring temperature of 54.7°F was 1.3°F above the 1981-2010 mean value of 53.4°F (Figure 1).
The statewide mean precipitation of 11.47 inches was 0.23 inches below the 1981-2010 normal of 11.70 inches, and was the 7th year in a row with below normal spring precipitation (Figure 2).
Statewide Spatial Averages
Data from the Delaware Environmental Observing System (DEOS) show that spring temperatures were above normal across northern New Castle County and Chester County, PA, along with portions of Kent and Sussex counties. Below normal temperatures were found along coastal and southern Sussex County and across southern New Castle and northern Kent counties (Figure 3).
Spring precipitation varied significantly across the State depending upon location. Dry conditions were especially apparent across extreme northern Delaware and Chester County, PA (Figure 4).