The Bay Area is on alert for a mixed bag of weather today. Residents may experience thunderstorms, bringing small hail, locally heavy downpours, and localized strong gusts. The National Weather Service advises, "When thunder roars, go indoors! See a flash, dash inside!" indicating a cautious approach to the unpredictability these storms may present.

Following the storms, returning to cooler temperatures will place the region under a Frost Advisory early Tuesday morning. This advisory, affecting North Bay interior valleys, the southern Salinas Valley, and surrounding mountainous areas, highlights concerns for "vulnerable populations, including children, the elderly, and people without adequate heating," the NWS Area Forecast Discussion cautions. Temperatures are expected to hover between 32 and 36 degrees, raising risks for those exposed to the cold without protection.

Meanwhile, the forecast outlined by the NWS Area Forecast Discussion warns of breezy conditions, with wind gusts potentially reaching up to 45 miles per hour in some coastal and ridgeline areas. The central focus for today and tonight includes two substantial rain bands affecting various parts of the Bay Area alongside scattered showers that are predicted to linger into the evening.

However, a brief respite is in sight, with the NWS predicting a gradual warming trend towards the latter part of the week. Yet, before the Bay Area feels this slight relief, a new wave of precipitation will arrive Wednesday, bringing light rain and continued chilled temperatures. Another round of rain is possible on Wednesday, with rarer than a tenth of an inch expected in most parts, while some coastal ranges may see up to 0.5 inches, per the NWS forecast discussion.