May was very nice and dry with well above average temperatures and sunshine. The temperatures for May averaged 60.0 degrees, 3.7 degrees per day above normal. This was the second warmest May in 84 years of records, surpassed only by 1991 when a recorded average temperature of 60.4 degrees was recorded. The maximum temperature was 84.0 degrees on the 26th and a minimum temperature of 34.0 degrees was recorded on the 11th. Daytime high temperatures averaged 70.0 degrees, 5.2 degrees above the norm. Evening temperatures averaged 50.0 degrees, 2.3 degrees above the norm.
Sunshine totaled 66% of the possible sunshine hours, 10 points above the norm and 19% above May 2009. There were 10 days with 90% or better sunshine and only 3 days with no sunshine at all. There were 5 days with fog in East Wareham.
Precipitation totaled 2.16 inches, 1.54 inches below the average rainfall for May in East Wareham. There were a total of 9 days with measurable precipitation. The largest 24-hour rainfall was 1.51 inches on the 18th-19th. Our total year-to-date rainfall is 24.98 inches, 4.08 inches above the average in East Wareham, and 2.57 inches above the amount measured at this point last year. We had 3 days with thunderstorms and 1 day with damaging winds.
The official spring (March-May) had well above average temperatures, rainfall and sunshine. Temperatures averaged 50.7 degrees, 4.2 degrees above average; rainfall totaled 17.20 inches, 4.52 inches above average (due to the extremely heavy rain in March) and snowfall totaled 4.0 inches, 1.80 inches below average. Sunshine for the spring average was well above normal, coming in with 56% of possible, 6 points over the normal. While sunshine during March was slightly below average, April and May were well above average.