It’s no secret that winters in the Southwest are usually mild, but Tucson has been riding an exceptional heat wave this winter.

A bicyclist takes advantage of a clear and warm early evening for a ride along the Rillito River Park paths near North Craycroft Road.

Average monthly highs have hovered around the mid- to upper-80s since November. The last week of February could be more of the same, courtesy of a strong ridge, said Kevin Strongman, a meteorologist with the National Weather Service in Tucson.

The high-pressure ridge — the result of a jet stream — is pushing precipitation and cloud cover to the north, Strongman said.

Without the cloud cover, he said, heat from the sun is beating down on Tucson and driving up surface temperatures.

La Niña has been coming into play, he said.

This “stronger than normal ridge,” Strongman said, is more “pronounced” than a typical February. A ridge like this one, he said, doesn’t usually make its way to Tucson until March or April.

February’s average high temperature (to date) eclipsed the normal average by about nine degrees, reaching 77.2 degrees as of Friday.

That temperature also sets a record for the average maximum temperature for February to date.

For this time of the year, “fire weather is exceptionally threatening,” Strongman said, urging area residents to be vigilant with fire prevention.

Wildflowers bloom Friday along East Speedway. Sunny and mild days after expected through the weekend.

He said Tucson has “above normal chances” for an exceptionally hot summer.

In the meantime, highs are forecast to remain in the 70s until Monday, with a high of 74 degrees Saturday, 79 Sunday and 83 Monday. Lows will be in the low to mid-40s.

The expected high on Tuesday: 86.


Become a #ThisIsTucson member! Your contribution helps our team bring you stories that keep you connected to the community. Become a member today.