August began seasonably hot on this Sunday with fewer showers and thunderstorms than previous days, but a few did still pop over the higher terrain. Our rain chances are disappearing, but the heat and smoke will remain. A little residual monsoonal moisture remains over northern California at this time, but not an amount which allowed for widespread showers and thunderstorms recently. We can expect fewer clouds and a cooler start to Monday. Tonight we'll have a clearing sky with lingering haze and smoke. Lows will range from the 50s in the mountains to the 70s in the valley. Monday will be mostly sunny and hot with highs from the 80s and lower 90s in the mountains to the 90s and lower 100s in the foothills and valley.
A trough of low pressure is pushing toward the West Coast at this time, and it will continue driving the ridge of high pressure eastward, along with the monsoonal moisture it brought in the form of clouds, showers and thunderstorms. We'll have a few more high clouds Tuesday, but it will remain quite hot despite the clouds. The trough will move onshore Wednesday and Thursday, and that will bring stronger breezes and a minor cooldown. Our area will be between another trough to the northwest and a ridge to the east late this week and next weekend, and we will remain mostly sunny and seasonably hot. Valley low will range from the mid 60s to the lower 70s, with valley highs from the mid 90s to the lower 100s through next weekend.