Update: Downtown Sacramento hits 99 degrees Saturday; 103 predicted Sunday

Forecasters predict blazing hot temperatures in the Sacramento region through Monday.

Saturday’s high was 99 degrees in downtown Sacramento and 100 at Sacramento Executive Airport, said Jim Mathews, National Weather Service meteorologist. Today is expected to be even more of a scorcher, with a predicted high of 103 degrees – about 12 degrees above normal, according to the weather service.

High pressure from the Four Corners region is to blame for the hike in temperature, forecasters said.

Mathews said a gradual cooling trend will kick in Tuesday, and the region’s temperatures will drop to the mid- to low-90s by Friday.

The triple-digit weather isn’t surprising this time of year because the region averages “about three weeks of 100s a year,” Mathews said.

“If you look at the whole climatological record dating back to 1877, the normal number of 100s is 14 (days),” he said.

Smoky conditions are expected in some areas of the northern Sacramento Valley, mostly due to several wildfires still burning in Trinity County, according to the weather service.

Ashiah Scharaga: 916-321-1673, @AshiahD