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Hallmark Lake, TX Weather Forecast
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Hallmark Lake Weather Forecast
| REST OF THIS AFTERNOON | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT |
 |  | |  | | | | |  | | |  |
| Sunny | Chance of Showers | Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny | Mostly Clear | Chance of T-Storm | Chance of Showers | Chance of T-Storm | Chance of T-Storm |
| Hi: 104°FHi: 40°C | Lo: 80°FLo: 27°C | Hi: 105°FHi: 41°C | Lo: 81°FLo: 27°C | Hi: 104°FHi: 40°C | Lo: 79°FLo: 26°C | Hi: 105°FHi: 41°C | Lo: 80°FLo: 27°C | Hi: 103°FHi: 39°C | Lo: 79°FLo: 26°C | Hi: 100°FHi: 38°C | Lo: 75°FLo: 24°C |
| POP: 20% | POP: 20% | POP: 20% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 504 PM CDT Sat Aug 22 2026 
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Hallmark Lake Forecast Discussion
Issued: 607 PM CDT Sat Aug 22 2026
Key Messages
- Hot temperatures near or over 100 degrees will continue through next week, with the hottest days of the summer likely Sunday through Tuesday.
- An Extreme Heat Warning remains in effect for parts of North Texas with a Heat Advisory across the rest of North and Central Texas, and these will likely be extended into early next week.
- Hot temperatures and low humidity will contribute to increased wildfire starts this weekend through next week.
Aviation
... (00Z TAFS) Issued at 559 PM CDT Sat ...