Weather WorldUnion Park, CA Weather Forecast
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Union Park Weather Forecast
| TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SUNDAY | SUNDAY NIGHT |
 |  | | | | | | | | | | |
| Clear | Sunny | Clear | Sunny | Clear | Sunny | Mostly Clear | Mostly Sunny | Clear | Clear | Mostly Sunny | Clear |
| Lo: 54°FLo: 12°C | Hi: 85°FHi: 29°C | Lo: 58°FLo: 14°C | Hi: 91°FHi: 33°C | Lo: 62°FLo: 17°C | Hi: 94°FHi: 34°C | Lo: 61°FLo: 16°C | Hi: 86°FHi: 30°C | Hi: 86°FHi: 30°C Lo: 57°FLo: 14°C | Hi: 86°FHi: 30°C Lo: 57°FLo: 14°C | Hi: 83°FHi: 28°C | Hi: 85°FHi: 29°C Lo: 55°FLo: 13°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 201 PM PDT Mon Sep 21 2026 
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Issued: 117 PM PDT Mon Sep 21 2026
Key Messages
- Periodically breezy winds and warming temperatures, peaking on Thursday with areas of Moderate HeatRisk in the Valley.
- Isolated mountain shower and thunderstorm chances (less than 10%) today along the Sierra Crest.
- Potential for unsettled weather and increased onshore winds over the weekend as a system passes to our north.
Discussion
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...Today through Thursday...
Scattered clouds continue to move across parts of northern California today, with cooler temperatures and breezy onshore wi...