Bloomberg News

Western U.S. May Be Cooler Than Normal Through Mid-November

November 01, 2011

Oct. 31 (Bloomberg) -- The western U.S. may be colder than normal through the middle of November, while temperatures in the East remain about 3 degrees Fahrenheit above normal or at seasonal levels, forecasters say.

The 6- to 10-day and 11- to 15-day forecasts issued by both MDA EarthSat Weather and Commodity Weather Group LLC’s President Matt Rogers call for temperatures in the West to be 8 to 14 degrees Fahrenheit (4 to 8 Celsius) lower than normal from Nov. 5 to Nov. 14. The coldest areas from Nov. 5 to Nov. 9 may be Colorado, New Mexico, Arizona and Utah.

“The forecast has turned substantially colder again over the western U.S., as a deep trough appears likely to settle into the region,” according to a note to clients today from MDA, in Gaithersburg, Maryland.

Traders use long-range temperature predictions to gauge energy use and market fluctuations. Hot or cold weather can increase demand for heating and cooling, and power plants use about 30 percent of the nation’s gas supplies, according to Energy Department data.

Denver’s average temperatures will be in the low 20s to mid 30s from Nov. 5 to Nov. 9, ranging 7 to 15 degrees below normal, according to MDA. At the same time, New York’s average temperature is forecast to be in the mid-50s, 3 to 6 degrees above normal.

Average temperatures in Boston and Philadelphia will be in the low 50s this weekend, 3 to 7 degrees above normal, according to MDA. Burbank, California’s average will hover in the mid-50, about 10 to 11 degrees lower.

There’s a possibility of another round of cold air coming into the Midwest and East after Nov. 14, according to at least one forecast model, said Rogers, in Bethesda, Maryland.

--Editors: Charlotte Porter, Margot Habiby

To contact the reporter on this story: Brian K. Sullivan in Boston at

To contact the editor responsible for this story: Dan Stets at

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