| Day | Date | High/Low | Forecast |
| Fri | 9th | 81/60 | Sunny remainder of afternoon. Clear evening. |
| Sat | 10th | 81/59 | Mostly sunny day with some high clouds possible. Some evening high clouds. |
| Sun | 11th | 75/56 | Chance of early morning fog/low clouds; Otherwise, mostly sunny day with some high clouds. Chance of late evening low clouds. |
| Mon | 12th | 68/55 | Morning low clouds likely but sunny afternoon. Evening low clouds. |
| Tue | 13th | 66/53 | Morning low clouds; Afternoon sun and breezy at times. Partly cloudy evening. |
(Forecast delayed by technical difficulties.)
As the computer models predicted, high pressure aloft has built over the Southwest. Widespread 90 degree weather in the valleys and isolated triple digit heat occurred (100 degree weather first such readings this year). Despite widespread fog/low clouds along the coast this morning, warmer than normal weather occurred even near the coast. UCLA got warmer than I anticipated considering the shallow marine layer in place (forecast high for today is a postcast).
There will be one more day of much warmer than normal weather away from the immediate coast. Potentially, even some beaches may get several warmer degrees over today’s readings (if the current, shallow marine layer gets diluted and on-shore flow remains very weak in the morning). Noticeable cooling, however, is expected on Sunday (Mother’s Day). It’ll still be much warmer than normal for well inland areas, but compared with what’s expected tomorrow, Mother’s Day should be more agreeable away from the coast (fog may linger at the coast, however).
The cooling trend should continue early next week as high pressure aloft gets replaced with low pressure. This trough will bring back cooler than normal weather west of the mountains. At this point, I’m not expecting “May Gray” weather next week. Low clouds may be persistent in places on Tuesday, but a cold front should disrupt the low cloud field by the afternoon hours (spotty, early morning mist/drizzle possible, especially around coastal facing foothills/mountains). It should get breezy in many locales on Tuesday thanks to a predicted, strong, on-shore flow.
The aforementioned trough should weaken after Tuesday, but other “short waves” should help maintain a weak trough over the state for most or all of next week. Depending on what the low level winds become, widespread, morning low clouds may prevail for next week. Slightly cooler than normal weather is expected for the rest of next week, but the second half of the week should be a little warmer than it gets early next week. Little weather changes are currently foreseen for the subsequent weekend.
Next issued forecast/synopsis may be on Monday, 12 May.