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Arrowhead Lake Weather Forecast
| REST OF TODAY | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | LABOR DAY | MONDAY NIGHT |
 |  | |  |  |  | |  | | | | |
| Sunny | Partly Cloudy | Mostly Sunny | Chance of Showers | Chance of T-Storm | Mostly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm |
| Hi: 63°FHi: 17°C | Lo: 44°FLo: 7°C | Hi: 64°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 63°FHi: 17°C | Lo: 45°FLo: 7°C | Hi: 66°FHi: 19°C | Lo: 48°FLo: 9°C | Hi: 65°FHi: 18°C | Lo: 47°FLo: 8°C | Hi: 64°FHi: 18°C | Lo: 46°FLo: 8°C |
| POP: 20% | POP: 30% | POP: 30% | POP: 10% | POP: 40% | POP: 30% | POP: 50% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 957 AM MDT Wed Sep 02 2026 
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Issued: 1105 AM MDT Wed Sep 2 2026
Key Messages
- A couple drier and warmer days for Wednesday and Thursday.
- Monsoon moisture returns late week into early next week with best chances for heavy rainfall over the mountains.
Aviation
/18Z TAFS THROUGH 18Z THURSDAY/... Issued at 1104 AM MDT Wed Sep 2 2026
VFR conditions are anticipated during the next 24 hours at all 3 taf sites, KPUB, KALS and KCOS. Surface Winds will be light and diurnally driven.
Watches / Warnings / Advisories
/WARNINGS/ADVISORIES... None.