Northern California's Evening Outlook: A Glimpse into September 28, 2025

As we transition into the evening hours of Saturday, September 28, 2025, Northern California is set to enjoy a beautiful and comfortable night. Residents across the region can look forward to predominantly clear skies, allowing for excellent stargazing opportunities and pleasant outdoor activities.

For the Sacramento Valley, expect temperatures to gradually cool from the low 80s in the late afternoon down into the comfortable high 50s to low 60s by midnight.

The air will remain dry with light, variable winds, making for an ideal evening to dine outdoors or take a leisurely stroll. Overnight lows are projected to dip into the mid-50s, so a light jacket might be welcome for early morning commuters on Sunday.

Over in the San Francisco Bay Area, the familiar evening marine layer will begin to make its presence felt, particularly along the immediate coast.

While inland areas like the East Bay and South Bay will experience mostly clear conditions with temperatures settling into the low 60s, coastal communities such as San Francisco and Half Moon Bay will see temperatures in the mid-50s, accompanied by a touch of fog and cooler, breezy conditions. Winds from the west-northwest will be sustained at 10-15 mph along the coast, gusting higher at times, providing that classic crisp Bay Area feel.

Moving towards the Foothills and Sierra Nevada, the evening promises serenity.

Temperatures will fall from the pleasant low 70s earlier in the day to the low 50s by late evening in the lower foothills, and into the 40s at higher elevations. Clear skies will prevail, offering breathtaking views of the night sky without any significant wind. Those camping or spending time in the mountains should prepare for cool overnight lows, potentially dipping into the high 30s in isolated, higher elevation areas.

The North Coast, from Eureka down to Mendocino, will experience a mixture of clear breaks and increasing cloud cover from the marine layer later in the night.

Temperatures will hover in the high 50s to low 60s during the early evening, cooling to the low 50s overnight. A gentle breeze from the ocean will keep conditions fresh and invigorating. No precipitation is expected across any part of Northern California.

Overall, Saturday evening, September 28, 2025, looks to be a splendid one throughout Northern California.

Whether you're in the city, by the bay, or nestled in the mountains, prepare for a tranquil night with mostly clear skies and seasonably mild to cool temperatures. Remember to check back for Sunday's full daytime forecast as we track what promises to be another pleasant day ahead!