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Weather as Recorded at the UMass Cranberry Station

Weather as Recorded at the UMass Cranberry Station

East Wareham

Prepared by Peter Jeranyama

May weather was slightly below average in temperature and with less sunshine than is normal.  Rainfall was above the 30-year average and was evenly distributed across the month.  The temperatures for May averaged 55.2 degrees, 0.6 degrees below the 30-year average.  The maximum temperature was 78.8 degrees on the 16th and a minimum temperature of 36.5 degrees was recorded on the 9th.  Daytime high temperatures averaged 62.5 degrees, 2.1 degrees below the norm.  Evening temperatures averaged 48.6 degrees, 1.5 degrees above the norm.

Based on data from the Blue Hills Observatory, sunshine averaged 36% of the possible sunshine hours, 16 percentage points below the norm.  There were only 3 days with 90% or better sunshine but 8 days with no sunshine at all (similar to 2016).  There were 18 days that were cloudy and overcast in East Wareham. 

Precipitation totaled 5.22 inch, 1.51 inches above the average rainfall for May in East Wareham.  This is the wettest May in the last four years.  There were 10 days with measurable precipitation, 8 with more than 0.1 inch. The two largest 24-hour rainfall events were 1.2 inches on the 14th and 1.13 inches on the 26th, accounting for 45% of the monthly total.  Our total year-to-date rainfall is 27.06 inches, 5.68 inches above the average in East Wareham. 

Official Spring Season

The official spring (March-May) had about normal average temperatures of 46 degrees, just slightly below the long-term average.  Snowfall for the period totaled 4 inches (all in March), 2.2 inches below average.  Precipitation was 3 inches above normal at 16.71 inches and this is 3.77 inches more rainfall than the same period last year (2016).  Sunshine for the spring was 560 hours, 7.4% less than the normal average number of sunshine hours for the three-month period.  Sunshine hours during March and April were above average, but May had well below average sunshine.