San Diego (CNS)-The National Weather Service said a trough of low pressure was crossing the interior of San Diego County on Sunday, and the temperature is expected to cool on Tuesday.

The ocean level has risen another 400 feet from Saturday morning, which should provide more cooling for the valley on Sunday

The sky over the mountains and the desert is clear.

The ocean layer is very wide offshore, and it may be difficult to clean the beach on Sunday, although some breakthroughs are expected.

NWS stated that the high temperature in the coastal area on Sunday is expected to be 66-71 degrees, and the lowest temperature at night is 56-61 degrees. The western valley highs will be 70-75 and 74-79 at the foot of the mountain, and the overnight lows will be 52-59.

The projected high is 76-86 and the overnight low is 49-57. The high point in the desert will be 101-106 and the overnight low will be 66-74.

Forecasters said that the daytime highs are expected to be below average for most of the week, with Monday being the coldest day.

The ocean layer is expected to be the deepest from Monday night to Tuesday morning.

Westerly winds are expected to bring gusts of 35-50 mph near and below the mountain pass and enter the desert in the next few days with a minimum relative humidity of 10-20%. These conditions are expected to sometimes lead to increased fire weather conditions.

NWS said that by the end of this week, the high point will be close to the average level, and as the low point weakens, it will further heat up early next week.

Copyright 2021, City News Service, Inc.