Weather World
City of Fountain Valley, CAFountain Valley, CA Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Fountain Valley Weather Forecast
| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT |
 |  |  |  | | |  |  | |  | | |
| Chance of Rain | Chance of Rain | Chance of Showers | Showers | Chance of Showers | Chance of Showers | Mostly Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy | Chance of Showers | Chance of Showers |
| Hi: 72°FHi: 22°C | Lo: 61°FLo: 16°C | Hi: 72°FHi: 22°C | Lo: 61°FLo: 16°C | Hi: 72°FHi: 22°C | Lo: 57°FLo: 14°C | Hi: 75°FHi: 24°C | Lo: 60°FLo: 16°C | Hi: 75°FHi: 24°C | Lo: 57°FLo: 14°C | Hi: 72°FHi: 22°C | Lo: 57°FLo: 14°C |
| POP: 40% | POP: 40% | POP: 40% | POP: 70% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1206 AM PDT Fri Oct 30 2026 
Fountain Valley Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Fountain Valley Weather Map
Fountain Valley Quick Facts
Fountain Valley Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 159 AM PDT Fri Oct 30 2026
Discussion
...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES...
.SHORT TERM (Today through Sunday)... Scattered showers across the coast and valleys onto the coastal slopes of the mountains have mostly produced 0.10 inch or less of rainfall for Thursday evening through 2 AM today with isolated totals to 0.25 to 0.35 inch.
Scattered, mostly light showers will continue for the coast and valleys onto the coastal slopes of ...