Areas of morning fog and low clouds are expected to give way to mostly sunny skies and temperatures ranging from the low to mid-80s through Tuesday in the Valley, forecasters said.
Chatsworth is expected to see an afternoon high of 87 today, with slightly cooler weather in Woodland Hills, Van Nuys and Burbank, said Kevin Stenson, a meteorologist with WeatherData Inc., which provides forecast information for The Times.
Due to the fog, morning temperatures today and Tuesday are expected to be cool, ranging from the upper 40s to the low 50s, Stenson said.
Stenson warned that the ultraviolet index for Los Angeles is expected to be 9, meaning that people with fair skin will suffer sunburn in less than 10 minutes.
A trough of low pressure is expected to move into Southern California beginning Wednesday, bringing partly cloudy skies and cooler temperatures but no rain.
"The low-pressure system is not strong enough to give rain in the Valley, but it could be a little breezy, with winds up to 15 mph," Stenson said.
Highs are expected to be in the mid- to upper 70s, with lows in the low to mid-50s for Wednesday and Thursday.
The low-pressure system will be replaced by a high-pressure system beginning Friday, bringing sunny skies and slightly higher afternoon temperatures.