Chris Fontana, "The Old Forecaster" 5/25/2013
The low pressure area that was over the Pacific Northwest has finally moved to the east. As it was moving out it sent one more shot of clouds across the north state. This is why it got cloudy for a while yesterday afternoon.
Today is starting off sunny but a weak low pressure trough is moving across the Pacific toward the coast and will move across Northern California late today and Sunday. The north coast, Trinity, Siskiyou, and Modoc counties will increasing clouds this afternoon with isolated light showers late this afternoon and evening through Sunday afternoon. . The valley and the rest of the north state will be sunny with a few clouds this afternoon and Sunday. Temperatures today will be cooler in the north but slightly warmer elsewhere. Gusty southwest to northwest winds will occur this afternoon.
Sunday afternoon and evening the low will be moving eastward and skies will be clearing. However, by Monday another low pressure trough will reach the coast. This system will have a little more moisture with it and Monday and most of Tuesday the foothills and mountains will be partly cloudy to cloudy with scattered light showers. The valley will be partly cloudy with isolated light showers. Gusty south to southwest winds will occur Monday afternoon. Monday and Tuesday temperatures will be 8 to 15 degrees below normal
The showers will end Tuesday afternoon and evening....but another weak system will brush the north end of the state Wednesday afternoon and Thursday. This system will bring a few showers to the areas north of Redding with partly sunny to partly cloudy conditions elsewhere. Skies will be clearing Thursday afternoon and Friday looks sunny with temperatures back to normal or slightly above. Gusty north winds will start late Thursday and continue through Friday.