ABC 10News Pinpoint Weather for Sun. Oct. 10, 2021: Monday brings major cooling and gusty winds

Posted at 10:05 AM, Oct 10, 2021
and last updated 2021-10-10 23:46:11-04

After a weekend of gradual warming, big changes are coming incredibly quickly. Monday will be the complete opposite of Sunday with a massive temperature drop and extremely gusty winds picking up.

A system is working its way down the west coast. Most of the associated moisture will stay to the east, so a majority of San Diego County will stay dry Monday. There is a slight chance for a stray shower or two, but it will favor the mountains. Some of that could turn to snow.

Heading into Monday, Highs will plummet as much as 10-15º for some areas in the span of just a day. This will bring highs in the 60s to a majority of the county for Monday. In addition, winds will pick up, peaking Monday afternoon and evening. The whole county will feel breezy conditions, but there is the potential for gusts up to 55-65 MPH in the mountains and deserts.

All of this activity has prompted multiple alerts. A High Wind Warning is in effect from 11 a.m. Monday to 3 a.m. Tuesday for the mountains. Gusts up to 75 MPH are expected. A Wind Advisory is in place from 1 p.m. Monday to 3 a.m. Tuesday for coastal areas, inland valleys and deserts. Gusts up to 35 MPH are expected.

Also, coasts will see choppy conditions, prompting a Small Craft Advisory, Gale Warning and High Surf Advisory from Monday through Tuesday morning.

Cooler temperatures remain into mid-week, then warmer conditions recover into next weekend.

It should be noted that a new water year started Oct. 1, which means the rain in the last week is benefiting a new year. It's been a great start thanks to the rain in the last week. With the most recent storm, Oceanside picked up 0.92", Rainbow 0.85", and Fallbrook got 0.68". San Diego picked up 0.16", bringing October's total to 0.64", which is well above the average of 0.06" for this time of the year.

Monday's Highs:
Coast: 68-71°
Inland: 66-71°
Mountains: 55-67°
Deserts: 78-85°

Follow ABC 10News Meteorologist Leah Pezzetti on Facebook at Leah Pezzetti 10News, or Twitter and Instagram @LeahPezzetti.