"This was the hottest June we ever had, in the whole period of records," said Jay Breidenbach, meteorologist at the National Weather Service office in Boise. "And July is started out just as hot."
June started off with a record-tying 96 degrees and the stultifying heat continued, beginning a stretch of triple-digit temperatures by the final week of June.
"Yes, this extraordinary heatwave is going to last two more days, at least above 100 degrees," Breidenbach told Boise Weekly. "So that will tie the record for the most consecutive days of over 100 degrees—nine consecutive days in triple digits if the forecast holds and we think it will."
The National Weather Service has been collecting data since 1877 and the hottest Fourth of July on record in Boise was 1937 when it hit 106 degrees. Residents are more inclined to recall July 4, 2001, when it hit 105 degrees, the second-hottest on record. In 1959, Boise had a rather chilly July 4th when the temperature dropped to 43 degrees. The average high over 137 years has been 87 degrees and the average low has been 56 degrees on July 4th in Boise.
Currently, the National Weather Service is forecasting sunny skies for the upper Treasure Valley this coming Saturday, July 4, with high temperatures between 98 and 104 degrees. Evenings should be clear and low temperatures near 70 degrees.