Weather World
City of Napa, CaliforniaNapa, CA Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Napa Weather Forecast
| REST OF TODAY | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | TUESDAY |
 |  | | |  |  |  | | |  | | |
| Sunny | Patchy Fog | Patchy Fog | Patchy Fog | Mostly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Clear | Mostly Clear |
| Hi: 85°FHi: 29°C | Lo: 56°FLo: 13°C | Hi: 81°FHi: 27°C | Lo: 56°FLo: 13°C | Hi: 85°FHi: 29°C | Lo: 67°FLo: 19°C | Hi: 86°FHi: 30°C | Hi: 86°FHi: 30°C Lo: 67°FLo: 19°C | Hi: 86°FHi: 30°C Lo: 67°FLo: 19°C | Hi: 90°FHi: 32°C Lo: 56°FLo: 13°C | Hi: 90°FHi: 32°C Lo: 56°FLo: 13°C | Hi: 90°FHi: 32°C Lo: 56°FLo: 13°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 302 PM PDT Wed Sep 30 2026 
Napa Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Napa Weather Map
Napa Quick Facts
Napa Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 509 PM PDT Wed Sep 30 2026
Key Messages
Updated at 1201 PM PDT Wed Sep 30 2026- Elevated fire weather conditions across the higher terrain through Thursday
- Temperatures warmer than seasonal averages with areas of moderate HeatRisk across the interior through the week
- Minor coastal flooding near high tide for bayshore locations along the San Francisco, San Pablo, and Monterey Bays today through Thursday
Aviation
... (00Z TAFS) Issued at 508 PM PDT Wed Sep 30 2026
A compressed marine layer is the main story for tonight, which wi...