Weather WorldFairview Park Castro Valley, CA Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Fairview Park Castro Valley Weather Forecast
| REST OF TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY |
 |  | |  |  |  | |  |  | | | |
| Mostly Cloudy | Partly Cloudy | Mostly Cloudy | Mostly Cloudy | Partly Cloudy | Drizzle | Partly Cloudy | Mostly Clear | Mostly Clear | Partly Cloudy | Mostly Clear | Partly Cloudy |
| Lo: 59°FLo: 15°C | Hi: 66°FHi: 19°C | Lo: 59°FLo: 15°C | Hi: 70°FHi: 21°C | Lo: 59°FLo: 15°C | Hi: 70°FHi: 21°C | Lo: 59°FLo: 15°C | Hi: 70°FHi: 21°C Lo: 55°FLo: 13°C | Hi: 70°FHi: 21°C Lo: 55°FLo: 13°C | Hi: 70°FHi: 21°C | Lo: 59°FLo: 15°C | Hi: 70°FHi: 21°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 302 AM PDT Tue Sep 01 2026 
Fairview Park Castro Valley Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Fairview Park Castro Valley Weather Map
Fairview Park Castro Valley Quick Facts
Fairview Park Castro Valley Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 1058 PM PDT Mon Aug 31 2026
Key Messages
Updated at 1039 PM PDT Mon Aug 31 2026- Cooler weather continues through the week
- Beneficial wetting rain expected in the North Bay
Aviation
... (06Z TAFS) Issued at 1019 PM PDT Mon Aug 31 2026
MVFR stratus has lingered through the day across portions of the SF Bay Area, and is beginning to expand again across the North Bay and into the Monterey Bay region. High clouds may interrupt the radiational cooling across portions of the South Bay and Central Coast, but a very deep marine layer s...