Night and morning low clouds and fog will be present each day through the forecast period along the coast for the first half of the week and into portions of the valleys towards the end of the week. High temperatures will be below average in the deserts today and tomorrow, with highs 5 to 10 degrees above average west of the mountains for the first half of the week. Minor fluctuations in temperatures for Thursday through next weekend.
For extreme southwestern California including Orange, San Diego, western Riverside and southwestern San Bernardino counties,
Weak offshore flow through Wednesday will keep low clouds out of the inland valleys but won't be strong enough to keep coastal areas clear of low clouds overnight and in the mornings. It should help with more efficient clearing in the afternoons through Wednesday. A noticeable warming expected today compared to yesterday with the inland valleys expected to be 8 to 15 degrees warmer. An additional 3 to 7 degrees of warming is expected on Tuesday from the coast to the deserts, with continued warming inland Wednesday.
The marine layer is expected to deepen Wednesday night into Thursday, which will push low clouds and fog into the inland valleys. A deeper marine layer is expected to be maintained through the weekend. There will be slight day-to-day differences in high temperatures for Thursday through next weekend with high temperatures a few to around 5 degrees above average.
190600z, Coast/Coastal Valleys, Clear skies and VFR conditions prevail across the coastal basin tonight. Low chance (<10%) of marine layer cloud development across coastal San Diego County between 13-17z. If any low clouds do develop, bases would be AOA 1500ft MSL. Higher chances for marine layer clouds to return Tuesday night.
Inland Valleys/Mountains/Deserts, Another round of northerly/easterly offshore winds pick back up after 18z Tuesday. Strongest gusts up to 25-30kts localized to mountain passes, closer to 20kts or less stretching below passes. Otherwise, VFR prevailing through the period.
No hazardous marine conditions are expected through Saturday.
Ca, None. PZ, None.
