Banning Sees 99 Degree Days, Thundershowers, Heat Advisories Across IE

BANNING, CA — Banning started the week with a slight chance of thundershowers and high temperatures near 99 degrees the National Weather Service said.

Much of the Inland Empire was under a heat advisory that began Sunday until at least 8 p.m. Monday, covering most of western Riverside County and the lower half of San Bernardino County.

"Take extra precautions if you work or spend time outside," the NWS stated. "When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion."

High pressure has stalled over Nevada and is influencing regional weather patterns, ushering in brittle, dry, hot conditions, meteorologists said.

"As the high-pressure centers over the Great Basin, this opens the door for easterly monsoonal flow to enter Southern California," the NWS said. "Slight chances of thunderstorms (are) in the forecast for the mountains and deserts on Monday afternoon and evening."

In the Coachella Valley, the highs will hover around 110 through the weekend and into early next week, with lows generally in the low 80s.

A list of cooling centers in Riverside County can be found at capriverside.org.

Banning's Weekly Weather Forecast

Monday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 99. East wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

Monday Night
Mostly clear, with a low around 74. West wind around 10 mph, with gusts as high as 20 mph.

Tuesday
Sunny, with a high near 99. West wind 5 to 15 mph becoming southeast in the morning. Winds could gust as high as 25 mph.

Tuesday Night
Mostly clear, with a low around 71. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

Wednesday
Sunny, with a high near 96. West wind 10 to 15 mph, with gusts as high as 25 mph.

Wednesday Night
Mostly clear, with a low around 68.

Thursday
Sunny, with a high near 93.

Thursday Night
Mostly clear, with a low around 66.

Friday
Sunny, with a high near 92.

Friday Night
Mostly clear, with a low around 64.

Saturday
Sunny, with a high near 92.

Saturday Night
Mostly clear, with a low around 64.

Sunday
Sunny, with a high near 91.