It looks like the slight cool-down over the past few days was a false start for fall.
National Weather Service meteorologist Sean Benedict says high temperatures will reach about 100 degrees for most of the week.
"Our average highs around this time a year are now down around 90 degrees," Benedict said. "In the early portion of the week, we’ll be pushing back near 100 degrees by Tuesday, and that 100-degree temp might linger through the whole week, right around that 100-degree Fahrenheit mark."
In the high country, temperatures will be slightly above average, with highs in the mid-to-upper 70s, and lows in the 30s.
Longer-range forecasts call for another cool-down next week — and this one might stick, Benedict said.
"They start to favor a little bit more of a troughing pattern after this coming week," he said. "It's possible this week, the hundreds, if we do hit it, could be the last week of the year."
The latest 100-degree day on record is Oct. 27.