Humble Reservoir, CA Weather Forecast
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Humble Reservoir Weather Forecast
| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT |
| Mostly Sunny | Patchy Fog | Mostly Sunny | Clear | Patchy Fog | Mostly Clear | Patchy Fog | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy |
| Hi: 91°FHi: 33°C | Lo: 69°FLo: 21°C | Hi: 93°FHi: 34°C | Lo: 68°FLo: 20°C | Hi: 94°FHi: 34°C | Lo: 69°FLo: 21°C | Hi: 93°FHi: 34°C | Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C | Lo: 72°FLo: 22°C | Hi: 95°FHi: 35°C | Lo: 72°FLo: 22°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1207 AM PDT Fri Aug 21 2026 

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Humble Reservoir Forecast Discussion
Issued: 1028 PM PDT Thu Aug 20 2026
Discussion
...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES...
...UPDATED AVIATION DISCUSSION...
A weakening Mesoscale Convective Vortex (MCV) from earlier convection over AZ has moved into far Southeast California. Outflow from this system has helped kicked off convection over the San Diego County mountains, while further north we`ve only seen some cumulus clouds so far. Expect scattered ...
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