The National Weather Service announced on Saturday that rain may fall in San Diego County with chances of snow in the mountains.
Showers could develop as early as Monday night, but will most likely fall on Tuesday and Wednesday, according to the NWS.
The NWS said on Tuesday, onshore winds are expected to strengthen and become strong over mountains and deserts and a cold storm system moves south along the coast.
A slight thunderstorm is expected on Tuesday night, along with periods of showers on Tuesday and Wednesday.
“We can expect to see significant changes by Monday as the major trough deepens over the West,” forecasters said. The strongest southwest to west winds may be focused over the mountains and on adjacent desert areas but lower elevations west of the mountains were likely to experience breezy conditions on Tuesday and Wednesday.
Gusts could exceed 60 mph in wind prone areas. Daytime highs on Wednesday could be 15 to 20 degrees below normal, with lows 10 to 15 degrees below normal by Thursday morning.
Frost, and even some freezing temperatures, may be possible at lower elevations west of the mountains.
On Thursday, the storm is expected to move East. Warm and dry weather is expected to trend through next weekend.
The NWS did not mention hazardous marine conditions were expected through Monday afternoon. Strong west-northwest winds over 20 knots and large, choppy seas were forecast to develop Monday night.
Winds should strengthen Tuesday and Wednesday with gusts near 30 knots over the outer coastal waters. These winds will cause hazardous conditions for small vessels, then diminish late Wednesday into Thursday morning.
