The National Weather Service's San Francisco branch forecasts a more noticeable cooling trend beginning Tuesday, suggesting that those inland can expect a brief respite from the otherwise consistent warmth.
Today's conditions brought a slight chance of drizzle before 11 AM, which should pave the way for clearer skies by the afternoon. Highs will reach around 68 degrees, as winds pick up with gusts that might hit 18 mph. According to the National Weather Service, tonight, San Franciscans are looking at "increasing clouds, with a low around 55," with the potential for more drizzle after 2 AM, keeping with the city's penchant for damp and breezy evening curtain calls.
The more significant cooling is expected to start on Tuesday, as the NWS San Francisco anticipates highs to settle "into the middle 70s to middle 80s inland and the upper 60s to the middle 70s along the Bayshore." Coastal areas will stay relatively steady temperature-wise, tagging the upper 50s to lower 60s as their domain. Winds should remain relatively constant, with Tuesday showing a high near 67, coming with southwest gusts that could reach 21 mph, which might not be a stark shift from today's patterns but does signal the front edge of the upcoming temperature dip.
This moderation in warmth is attributed to a shortwave trough, or perhaps a weak cutoff low, develops into the Pacific Northwest and the northern Rockies, pushing the ridge axis towards the west and north, per the NWS bulletin, the weekend appears to bring a consequential change yet again with a "slight warming trend" forecasted, giving residents a gentle thermal roller coaster to navigate the confines of a bay-influenced climate. In the interim, the marine layer continues to be an assertive presence, surging inland in the evenings, leading to "another night of IFR to LIFR cigs" lingering like a low-hanging shroud over the region.
