Cool, CA Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Cool Weather Forecast
| TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SUNDAY | MONDAY | TUESDAY |
| Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Sunny | Clear | Clear | Clear | Clear | Clear |
| Lo: 69°FLo: 21°C | Hi: 97°FHi: 36°C | Lo: 73°FLo: 23°C | Hi: 95°FHi: 35°C | Lo: 70°FLo: 21°C | Hi: 89°FHi: 32°C | Lo: 62°FLo: 17°C | Hi: 80°FHi: 27°C Lo: 60°FLo: 16°C | Hi: 80°FHi: 27°C Lo: 60°FLo: 16°C | Hi: 80°FHi: 27°C Lo: 60°FLo: 16°C | Hi: 80°FHi: 27°C Lo: 60°FLo: 16°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 800 PM PDT Tue Sep 08 2026 

Cool Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Cool Weather Map
Cool Quick Facts
Cool Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 1247 PM PDT Tue Sep 8 2026
Key Messages
- Drying and warming trend through Thursday, with areas of Moderate to Major HeatRisk Wednesday and Thursday.
- Heat Advisory is in effect 10 am Wednesday - 10 pm Thursday for the Delta, Valley, and foothills.
- Cooling temperatures late week into the weekend.
- Breezy onshore winds Friday-Saturday followed by gustier north winds Sunday-Monday.
Discussion
...
Today-Thursday: A fluctuating weather pattern is setting up across the region today with split flow aloft currently over interior NorCal....
Weather World