San Diego Sees Partly Sunny Skies and Scattered Showers Today

Lead San Diego experienced partly sunny conditions with intermittent showers on Wednesday, September 17, as daytime highs reached 79°F and humidity paired with a 77 percent chance of precipitation brought localized downpours.

Nut Graf The mix of sun and showers interrupted the city’s typically dry late-summer pattern, prompting residents and visitors to carry umbrellas during midday outings. The unusual spike in precipitation underscores a brief shift in Southern California’s coastal weather dynamics.

Key Weather Details:

• Temperature: high of 79°F and low of 68°F
• Precipitation: 77 percent chance of showers, generally light but intermittent
• Wind: southwest at 7 mph, providing a gentle breeze along the waterfront
• UV Index: 11, indicating very high sun exposure risk during cloud breaks

Main Part Morning hours began with partial sunshine peeking through scattered clouds, quickly giving way to brief, localized showers around mid-morning. Coastal neighborhoods from La Jolla to Point Loma saw brief wet spells, while inland areas remained largely dry.

By early afternoon, clouds thinned, allowing the mercury to climb into the upper 70s. However, scattered showers redeveloped around 3 p.m., especially near Mission Valley, before tapering off around sunset.

Humidity levels hovered near 60 percent, higher than typical September averages, which traditionally feature low heat and limited rainfall. The elevated moisture contributed to the formation of afternoon cloud buildups over the city’s hills.

UV exposure peaked when clouds briefly parted around noon, necessitating sunscreen and protective clothing for those outdoors. Evening conditions cleared, offering residents a comfortable night with lows near 68°F.

Looking Ahead Tomorrow’s forecast calls for a return to mostly sunny skies with highs near 80°F and negligible rain prospects, marking a quick reversion to San Diego’s standard dry coastal climate.