The Weather Blog

April 30, 2009|By FRANK ROYLANCE | FRANK ROYLANCE,frank.roylance@baltsun.com

This week's sizzle had us thinking more about air conditioning than heating. But a look back at the heating season finds that it's ending precisely on BWI's long-term average for heating degree days - a temperature-based measure of demand for heating energy. Cool months were separated by mild, and a chilly April moderated with a hot finale. Soon, the cooling degree-days begin.

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