Fresno's eight-day heat spell broke Monday, with a high of 98, thanks to some monsoon moisture that put the Valley under an overcast sky.
"Nothing about the weather changed particularly," said Jim Dudley of the National Weather Service's office in Hanford. "It was 100 percent because of the clouds."
The overcast was unusual in how it affected the central San Joaquin Valley. To the south, Bakersfield had clear skies and a high of 104 degrees. To the north, the highs were also in the low 100s.
"I guess you could say Fresno got lucky," Dudley said.
While the skies appeared to offer the chance of sprinkles, little to no areas in Fresno experienced any rain.
"Several stations throughout the Valley reported light sprinkling, but nowhere had any measurable rain," Dudley said.
The sun attempted to break through the clouds toward the end of the day. With a six-degree increase between 2 and 5 p.m., the temperature still did not break 100. There was a point around 5:30 p.m. when the thermometer hit 99 degrees, but it did not last long enough to be considered a high.
"I think clouds were the only thing that could have broken a streak like this," Dudley said of the hot spell, which began June 29.
A new heat spell could start Tuesday. Beginning Tuesday and continuing the rest of the week, skies are predicted to stay clear and sunny, with triple-digit highs returning.
"Those temperatures are going to jump right back up," Dudley said.
The reporter can be reached at firstname.lastname@example.org