Boulder, CO Weather Forecast
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| TODAY | TONIGHT | SUNDAY | SUNDAY NIGHT | LABOR DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT |
| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Showers |
| Hi: 93°FHi: 34°C | Lo: 63°FLo: 17°C | Hi: 92°FHi: 33°C | Lo: 63°FLo: 17°C | Hi: 90°FHi: 32°C | Lo: 60°FLo: 16°C | Hi: 87°FHi: 31°C | Lo: 59°FLo: 15°C | Hi: 86°FHi: 30°C | Lo: 60°FLo: 16°C | Hi: 86°FHi: 30°C | Lo: 60°FLo: 16°C |
| POP: 20% | POP: 10% | POP: 20% | POP: 30% | POP: 20% | POP: 20% | POP: 30% | POP: 20% | POP: 30% | POP: 30% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 605 AM MDT Sat Sep 05 2026 

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Issued: 545 AM MDT Sat Sep 5 2026
Key Messages
- Remaining warmer than normal through most of next week.
- Isolated to scattered showers expected today, with a few thunderstorms this afternoon and evening for the northeast plains.
- Higher coverage of showers/storms expected Sunday into Monday, although mostly on the weaker side. Daily shower potential will carry into most of next week as well.
Discussion
/Through Friday/... Issued at 137 AM MDT Sat Sep 5 2026
I`m not sure if I have anything insightful to add in this forecast discussion, ...
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