The dog days of summer are firmly upon us, with the National Weather Service in Sacramento warning of persistent sweltering conditions throughout much of the region. According to the National Weather Service, we're in for a dry spell with "above normal high temperatures" expected to persist until a slight reprieve next weekend. For those tirelessly seeking relief, the moderate HeatRisk will remain steadfast through the forecast period.
At the heart of this heatwave is a high-pressure system, unmoved in its grip over California, though the Delta breeze, that unsung hero of the valley, will attempt to blunt the thermal blade slightly today. The marine layer, while shallow around 1000 feet, isn't expected to provide substantial cooling, leaving us to contend with "triple-digit heat expected in the Central Valley and moderate HeatRisk," as reported by the National Weather Service. For the High Sierra, any hopes of afternoon thunderstorms are dashed by a lack of necessary moisture—further evidence of the drought's iron-like grasp on the state's throat.
Looking ahead to Monday and Tuesday, little is to change, save for a whisper of monsoonal moisture that might drift into Central California. This scant visitor, however, is predicted "to have much impact on our temperatures or weather," leaving locals to once again solely strategize personal measures against the heat, as per the National Weather Service. By Tuesday, the desert Southwest high insists to only gradually build westward, potentially heralding local areas of major HeatRisk, but with the incalculable persistence of moderate risk across most of the Central Valley.
The workweek continues on a dry note, showing no favoritism to those looking for a respite. Wednesday's "highs around 100 to 107 in the Central Valley with 80s to around 100 for the mountains and foothills" will ensure that air conditioners continue to hum their monotonous tunes day and night. A minor cooling trend is forecasted through to the weekend as that stubborn high pressure weakens, offering the faintest glimmer that "high temperatures returning to near seasonal normal by next weekend," providing the collective sweat-drenched public a reason to look forward to the days ahead, as mentioned by the National Weather Service.
For aviators wheeling across the NorCal skies, conditions remain largely VFR over the next 24 hours, except in areas local to wildfires where visibility may drop due to haze or smoke. And, while the Delta might stir with winds up to 20 knots at times, elsewhere surface wind looks to stay below 12 knots—a small mercy for those grounded and airborne alike in this relentless California summer simmer.