This browser does not support the Video element.
Weather Forecast for Tuesday, April 21
The latest forecast and air quality conditions for the greater Los Angeles area, including beaches, valleys and desert regions.
LOS ANGELES - A late-season weather system is moving through Southern California on Tuesday, delivering a mix of light showers and breezy conditions to the region.
What we know:
According to the National Weather Service (NWS), rainfall totals will be relatively light across the region, generally measuring 1/3 of an inch or less. Mountainous areas may see locally higher amounts of up to 3/4 of an inch.
Because rainfall rates are expected to remain modest, forecasters have indicated a low risk of flooding or debris flows.
High temperatures on Tuesday are expected to sit 4 to 8 degrees below seasonal norms. Gusty southwest winds are impacting interior and mountain areas today, with gusts reaching up to 40 mph in some corridors, the NWS said.
What we don't know:
While the general path of the storm is clear, the exact timing of the "tapering off" period Tuesday evening will vary by neighborhood.
Forecasters are also monitoring a 15-20% chance of isolated thunderstorms in northern areas like San Luis Obispo, though it remains uncertain if those cells will drift far enough south to impact the Los Angeles basin.
Timeline:
- Tuesday Afternoon: Peak wind gusts and scattered light showers during the commute.
- Tuesday Evening: Rain begins to taper off across the Southland.
- Wednesday: Dry conditions return with a slight warming trend.
- Thursday – Friday: Temperatures remain near normal.
- Saturday – Sunday: A new low-pressure system brings a 30-50% chance of light rain and a "noticeable cooldown."
What's next:
Residents can expect a return to sunshine and near-normal temperatures starting Wednesday.
However, a second low-pressure system is already on the horizon for Saturday, which could bring another round of light rain and cooler daytime highs in the 60s for the final weekend of April.
The Source: This report is based on information from the National Weather Service.