San Francisco Weather Radar: Local Guide to Reading Storms

What radar should confirm

For San Francisco, radar is most useful when it explains whether precipitation is moving toward the places you actually use: home, work, school, travel routes, or outdoor plans.

Local hazards to compare

• Dense summer fog that keeps coastal neighborhoods cold and gray
• Extreme microclimate temperature swings across the city
• Winter atmospheric river storms with heavy rain and wind
• Wildfire smoke drifting in from inland fires in late summer

When to watch more closely

San Francisco's key windows are the summer fog season, winter atmospheric river storms, and late-summer or fall smoke events from regional wildfires.