Week In Weather Montrose: Hot, Possible Thunderstorms

MONTROSE, CA – Happy Monday, Montrose! This week in weather looks like temperatures will stay in the upper 90's, and potential summer storms might be headed your way through the middle of the week. Within the rest of Southern California temperatures will also be hot, so everyone will be sweating together.

Today
Sunny, with a high near 95. Calm wind becoming south southwest around 5 mph in the afternoon.

Tonight
Partly cloudy, with a low around 72. Southeast wind 5 to 10 mph.

Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95. East wind 5 to 10 mph becoming south in the morning.

Tuesday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 77. South wind 5 to 10 mph becoming light southeast in the evening.

Wednesday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 94. Light southeast wind becoming south 5 to 10 mph in the afternoon.

Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77.

Thursday
A 20 percent chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 95.

Thursday Night
A slight chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 76.

Friday
Mostly sunny, with a high near 94.

Friday Night
Mostly clear, with a low around 75.

A significant warming trend will begin in Southern California Monday, generating triple-digit temperatures in Los Angeles County valleys, National Weather Service forecasters said.

The NWS attributed the warming trend to an upper-level high-pressure system strengthening over Northern California and Nevada combined with "a weak northerly wind component at the lower levels."

"Widespread triple-digit heat is expected across the lower mountains, Antelope Valley and interior valleys," according to an NWS statement.

By Tuesday, an increase in monsoonal moisture will potentially lower temperatures a few degrees across Los Angeles and Ventura counties, but the increased humidity "will lead to significant discomfort," it said.

In fact, the discomfort will start Monday. An excessive heat warning issued by the NWS will be in effect from 10 Monday morning until 10 Monday evening in the Antelope Valley, where highs will range between 106 and 109 degrees, the NWS said. A slightly less serious heat advisory will be in effect from 10 this morning until 9 p.m. Tuesday in the San Gabriel Mountains and the Santa Clarita Valley amid highs ranging from 95 to 106.

"This is a dangerous situation with an increased threat of life- threatening heat-related illness," according to the NWS.

Forecasters urged people who work outdoors to save strenuous activities for the early morning or evening, wear light-colored, loose-fitting clothing, and drink plenty of water.

Above all, they said, be aware that "temperatures inside vehicles, even if the windows are partially open, can quickly rise to life-threatening levels. Never, ever leave people or pets in enclosed vehicles, even for a short period of time."

The NWS forecast a mixture of partly cloudy and sunny skies Monday in L.A. County, along with highs of 77 at LAX; 80 in Avalon; 84 in Long Beach; 85 in downtown L.A.; 90 in San Gabriel; 92 in Pasadena and Burbank; 95 on Mount Wilson; 100 in Woodland Hills; 105 in Saugus; 107 in Palmdale; and 108 in Lancaster.

Sunny skies were forecast in Orange County, along with highs of 70 in Laguna Beach; 73 in San Clemente; 76 in Newport Beach; 85 in Irvine; 86 in Anaheim and Mission Viejo; 89 in Fullerton; and 90 in Yorba Linda.

Temperatures will stay the same in some communities Tuesday, climb in others by up to 4 degrees and decline by a few degrees in some areas, including Lancaster, where a high temperature record for a July 30 was matched Sunday, when temperatures reached 106 degrees, the same as in 2000.

City News Service contributed to this post

Image via Patch