Typically, this is one of the three driest months of the year, with only 0.04 inches typically falling from the sky each April, May and June. That amounts to just enough drops to wet the pavement... and not much more.
However, the next few weeks may increase our chances of a wetter than average April. In a pattern eerily similar to the El Nino pattern that most forecasters were predicting all winter but yet never materialized, a high pressure system is expected to build off the coast of Oregon and Washington. This will drive a stronger southern jet stream into extreme Southern California.
This will keep the weather rather dry for the Pacific Northwest. However, several low pressure systems are expected to develop to the southwest of California and move inland over the next 7-14 days. An active subtropical jet stream will drive these systems across Central and Southern California, as well as Baja California, with a chance of showers or thunderstorms during each passage.
Before this pattern change, a strong high pressure cell moving across CA and the Great Basin will allow 2 days of very hot temps... and possibly the first 100 degree temperatures of the season on Wednesday!
Tuesday: Mostly Sunny. Highs 92-97, Lows 58-65. Some afternoon winds NW25, G35 in the late afternoon.
Wednesday: Mostly Sunny. Highs 95-101, Lows 60-70. Local morning and early afternoon winds NNE20, G35.
Thursday: Increasing clouds, with a chance of sprinkles or light showers by late in the day and into the night. Slightly cooler. Highs in the 80's. Lows 58-64.
Friday: Partly cloudy with a slight chance of sprinkles. Highs 78-84. Lows 56-64.
Saturday: Increasing clouds with a decent chance of showers or even an isolated thunderstorm. A bit muggy. Highs 78-84. Lows 55-65.
Sunday: Rather cloudy with a decent chance of rain at times, and a slight chance of a thunderstorm. A bit muggy. Highs 75-80. Lows 55-60.
Next week appears to bring periods of sun and periods of cloudiness with a few systems expected to move through during the week, with additional showers possible. Snow levels appear to remain above 7,000-8,000 feet.
Rainfall amounts between Saturday and Tuesday appear to be under 0.25 inch for the deserts, and possible near 0.50-1 inch in the mountains to our west. However, amounts in this type of pattern will vary considerably. If southerly flow develops more than expected, we may end up with higher rainfall totals. This makes for a tricky forecast for the weekend and following week. On the plus side, it will be another scenic period for desert photography.
In the meantime, hit the pool the next several days and hydrate well. Temps in the high 90's and low 100's are enough to help cause dehydration. Don't hit the hiking trails unprepared!