Temperatures in Chicago May Drop as November Begins

Below-normal temperatures may persist in Chicago and around the Great Lakes area into November while the weather will be more seasonal across most of the U.S., said Matt Rogers, president of Commodity Weather Group LLC.

Readings are expected to be at least 3 degrees Fahrenheit (1.7 Celsius) lower than usual from Illinois to Ontario and Quebec, including Chicago, Toronto and Montreal, from Nov. 2 to Nov. 6, Rogers said.

A split in the jet stream “weakens cool-air availability and trends much of the nation closer to normal temperatures overall, but the Pacific pattern is too mixed to generate a big sustained warm pattern yet either,” Rogers said in his forecast from Bethesda, Maryland.

Below-normal temperatures, especially in Eastern and Midwestern cities, tend to increase energy consumption as more people turn up thermostats to heat homes and businesses. November marks the start of the cooling season, when most natural gas is burned in the U.S.

Power generation accounts for 32 percent of U.S. gas demand, according to the Energy Information Administration, the Energy Department’s statistical arm. About 49 percent of all homes use the fuel for heating.

A cold snap is chilling much of the eastern U.S., where temperatures are expected to be 5 to 8 degrees below normal through the end of the week, Rogers said.

Freeze watches and warnings were in place from Kansas to Massachusetts overnight, according to the National Weather Service. The low temperature in Boston, where Major League Baseball’s World Series begins tonight, is expected to be 39 degrees with a 40 percent chance of rain.

The Boston Red Sox are meeting the St. Louis Cardinals in the best-of-seven match.

The normal average temperature in New York for Nov. 1 is about 53 degrees, according to MDA. In Boston, it’s 48; in St. Louis, 54; Dallas, 63; Chicago, 47; and in Burbank, California, it’s 64.

Before it's here, it's on the Bloomberg Terminal.