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McCallum Lake, TX Weather Forecast
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McCallum Lake Weather Forecast
| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT |
 |  |  |  | | | |  | | | | |
| Chance of T-Storm | Chance of T-Storm | Mostly Sunny | Partly Cloudy | Sunny | Partly Cloudy | Sunny | Mostly Clear | Sunny | Mostly Clear | Chance of T-Storm | Mostly Clear |
| Hi: 106°FHi: 41°C | Lo: 80°FLo: 27°C | Hi: 106°FHi: 41°C | Lo: 80°FLo: 27°C | Hi: 105°FHi: 41°C | Lo: 81°FLo: 27°C | Hi: 108°FHi: 42°C | Lo: 81°FLo: 27°C | Hi: 108°FHi: 42°C | Lo: 81°FLo: 27°C | Hi: 103°FHi: 39°C | Lo: 79°FLo: 26°C |
| POP: 20% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 208 AM CDT Fri Aug 21 2026 
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McCallum Lake Forecast Discussion
Issued: 207 AM CDT Fri Aug 21 2026
Key Messages
- High temperatures will continue to exceed 100 degrees for the next several days. An Extreme Heat Warning and Heat Advisory remain in effect for portions of the area.
- Isolated thunderstorms are possible today and Saturday during the afternoon and evening, but most areas will remain rain-free into next week.
- Hot temperatures and low humidity will contribute to increased wildfire starts through the weekend.
Aviation
... (06Z TAFS) Issued at 1251 AM CDT Fri Aug 21 2026
VFR conditions will p...