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Haster Retarding Basin, CA Weather Forecast
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Haster Retarding Basin Weather Forecast
| TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY |
 |  | | | |  | | | | |  |  |
| Clear | Mostly Sunny | Clear | Mostly Sunny | Mostly Clear | Partly Cloudy | Mostly Clear | Partly Cloudy | Mostly Clear | Partly Cloudy | Chance of Showers | Chance of Showers |
| Lo: 74°FLo: 23°C | Hi: 99°FHi: 37°C | Lo: 72°FLo: 22°C | Hi: 99°FHi: 37°C | Lo: 70°FLo: 21°C | Hi: 96°FHi: 36°C | Lo: 69°FLo: 21°C | Hi: 90°FHi: 32°C | Lo: 68°FLo: 20°C | Hi: 88°FHi: 31°C | Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1222 PM PDT Mon Oct 05 2026 
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Issued: 1117 PM PDT Mon Oct 5 2026
Discussion
...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES...
...UPDATED AVIATION DISCUSSION...
Models show better onshore flow (west winds) closer to the coast and far western valleys over the next couple of days. Still thinking temperatures from today into Tuesday will be relatively similar. A subtle increase in temperatures will be seen at the coast as a thermal ridge expands northward Wednesday into Thursday. This...