Triple-Digit Temperatures Remain In Palm Desert, Coachella Valley

PALM DESERT, CA — The Inland Empire remains oven-hot this week with temperatures well over 100 degrees in desert and foothill communities, the National Weather Service predicts. In Palm Desert, Palm Springs and the Coachella Valley, expect an average daytime high of 108 through Thursday with lows in the upper 80s.

The next three days will see high temperatures of over 100 degrees in many towns, prompting the National Weather Service Tuesday to issue another heat advisory for the region.

"Days will be slightly hotter and nights a little warmer, with the resulting heat risk sufficient for a heat advisory for Monday through Wednesday," the NWS said in a statement.

There is a moderate risk for heat-related illnesses for pets, livestock, and those who are sensitive to heat, especially those without effective cooling and/or adequate hydration, they said.

Last week, high temperatures struck the region with temperatures in excess of 100 in the Riverside metropolitan area. That cycle has remained unbroken over the previous six days.

The current heat advisory will run until 8 p.m. Wednesday.

"Drink plenty of fluids, stay in an air-conditioned room and stay out of the sun," the NWS stated.

Forecasters said a ridge of high pressure over the Great Basin of Utah and Nevada is influencing weather patterns.

Meanwhile, low pressure troughs over Arizona and Mexico are scooping up monsoonal moisture, stirring convective activity and generating thunderstorms, mostly east of the San Gorgonio Pass.

"There will continue to be a flow of monsoonal moisture into the area with mid-level southeast flow while higher level flow is drier and southwest," the National Weather Service said. "Isolated to scattered thunderstorms are expected to develop each afternoon in the mountains along convergence boundaries toward the mountain ridge tops, then migrate toward the deserts as the sea breeze moves inland."

Thunderstorm chances increase later this week and weekend, with storms potentially drifting west of the mountains and toward the coast, the NWS reported.

High temps in the Riverside metropolitan area are predicted to reach 101 Tuesday and Wednesday, with lows in the low 70s.

In the Coachella Valley, 108 will be the average daytime high for the two-day period, with lows in the upper 80s. Meanwhile, Southwest Riverside County's Temecula Valley see slightly cooler temperatures with high temperatures in the mid 90s, with lows around 70.