Tuesday, August 10, 2010

Summer of Simmer: 67-Year Record Tied;
50th Day of 90°+

Evening Update: The monthly and seasonal cooling degree days for Washington continue to run significantly above average, driving up area utility bills:
Today    22 +57%
August 166 +14%
Summer 1205 +33%
2010 1446 +39%
Original post:
Today's preliminary high temperature of 98° at Washington ties the record for August 10 set in 1943. Along with the low so far of 76°, this brings the August monthly average to 81.4°, which is 2.5° above the long-term average. The summer average to date is 81.8°.

The high of 97° at Baltimore was 3° short of the record, and the high of 95° at Washington Dulles was 2° below the record there. The downtown Baltimore high was also 97°.

The high of 97° at Salisbury, MD tied a record set in 1977 in a temperature history dating back to 1900. The high of 99° at Georgetown, DE broke the record of 98° set in 1949. Georgetown records began in 1948.

This is the 45th summer day with a temperature of 90° or higher and the 50th of 2010 including the 5 in April and May. The record is 67 days of 90°+ in 1980.

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