The hottest weather of the week arrives today before a cool front drops down and provides some modest relief tomorrow. The front could trigger a couple storms today and, as it stalls just to our south, another round of storms by late tomorrow.
TodayHot. Isolated thunderstorm?
A hot airmass will remain overhead. It won't be oppressively humid courtesy of relatively dry west winds, but you'll notice a subtle hint of mugginess. High temperatures should reach the mid to upper 90s. A few thunderstorms could form late in the afternoon or evening (20% chance) in advance of an approaching cold front, but may not hold together well. Overnight, it will be partly cloudy and mild with lows 67-73 (suburbs-city).
SundayNot as hot, increased (but not high) storm chances.
The cold front will stall in our vicinity -- increasing cloud cover but lowering temperatures. Highs should be in the upper 80s. Scattered thunderstorms may (30% chance) form in the vicinity of the front late in the afternoon and into the evening as it begins a jog to the north as a warm front.
A Look Ahead: Midweek Extreme Heat?
Models are advertising a big heat wave next week -- particularly for the Midwest. For us, the hottest day looks to be Wednesday, when triple digit heat can't be ruled out. A backdoor cool front may provide a bit of relief on Thursday. Stay tuned.
Needed for Meteorology Field: Better Public RelationsA billboard advertisement at San Francisco International Airport photographed recently by an anonymous contributor.