Average temperatures in the Greater Yellowstone Area have increased by 2.3 degrees Fahrenheit since 1950and could rise by another 10 F or more by 2100, according to a report on climate change released today.In Wyoming, where an unusual heat wave produced record temperatures just last week, the outlook isparticularly dire: Without a reduction in greenhouse gas emissions, the cities of Jackson, Cody and Pinedale,along with Bozeman, Mont., could experience an additional 40 to 60 days each year with temperaturesexceeding 90 F by the turn of the century, the report said.
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