Temperatures maxed out about 5° to 10° above average to close out the work week. We are going from high pressure warmth to low pressure cooling this weekend.
For the rest of the night, low clouds and fog will continue to fill in for the coast and inland valleys through Saturday morning. It will be dense in spots and lead to reduced visibility. There is a significant reduction in Fallbrook tonight.
The moisture is being steered by strong onshore flow. This is also prompting gusty winds in the mountains and desert. A Wind Advisory has been issued from 1 PM Saturday to 10 AM Sunday.
At the coast, high surf took over the SD coast today. 6' waves with sets 10' - 12' were reported at Sunset Cliffs this afternoon & the OB Pier was closed. The big waves will continue through Sunday afternoon.
A strengthening marine layer from the trough over the West will bring light rain/drizzle to the County Saturday afternoon - night. Accumulations will be very minimal with trace to 0.1" for most of the County. Isolated spots could see 0.25" along coastal mountain slopes, the deep shade of blue on the map.
Temperatures will also be cooler tomorrow, especially inland with the approaching system. Once the cold front pass through Sunday morning, temperatures will dip a little more as mostly sunny skies return.
SATURDAY MICROCLIMATE HIGHS:
- Coastal highs near 64°, normal around 65°
- Inland highs near 64°, normal around 69°
- Mountain highs near 55°, normal around 52°
- Desert highs near 74°, normal around 68°
SUNDAY MICROCLIMATE HIGHS:
- Coastal highs near 62°, normal around 65°
- Inland highs near 62°, normal around 69°
- Mountain highs near 50°, normal around 52°
- Desert highs near 68°, normal around 68°
On the back side of the system, high pressure will build in over the Southwest. Temps will warm up with a few passing clouds for the first half of the week. The next chance of rainy weather may occur by next weekend.