September was extremely warm and wet with below average sunshine. The temperature averaged 66.0 degrees, 3.0 degrees per day above normal. Maximum temperature was 82.0 degrees on the 26th; a minimum temperature of 45.0 degrees was recorded on the 17th. Daytime high temperatures averaged 74.0 degrees, which is 2.6 degrees above the norm. Evening temperatures averaged 59.0 degrees, 4.5 degrees above the norm. This was the 8th warmest September in the 85 years of record keeping in East Wareham. Both 2010 and 2011 September’s average temperatures were in the top 10 highest years. The first 5 days of September were dry, followed by 3 days of rain, totaling 2.61 inches, followed by 10 dry days, ending the month with 5 days of humid, overcast, and wet days with daily fog.
Sunshine totaled 51% of the possible sunshine hours, 3 points below the norm. We only had 3 days with 90% or better sunshine, compared to the 13 days in September 2010 and 5 days with no sunshine at all. We also had 7 days with morning fog in East Wareham.
Precipitation totaled 4.98 inches, 0.92 inches above normal and 1.72 inches above last year’s September rainfall. We had measurable rain of 0.10 inches or greater on just 7 days, and 6 days with spotty showers and drizzle with less than 0.10 inches recorded. The largest 24-hour rainfall was 1.72 inches recorded on the 8th. There were two thunderstorms this month. Year-to-date rainfall for 2011 is 39.25 inches, 3.55 inches above average for East Wareham and 0.96 inches above 2010 total rainfall at the same time last year.