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Armstrong Weather Forecast
| TODAY | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  | |  |  | | | | | |  | |
| Sunny | Partly Cloudy | Sunny | Clear | Chance of T-Storm | Mostly Clear | Chance of T-Storm | Mostly Clear | Chance of T-Storm | Mostly Clear | Chance of Showers | Mostly Clear |
| Hi: 99°FHi: 37°C | Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C | Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C | Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C | Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C | Lo: 75°FLo: 24°C | Hi: 95°FHi: 35°C | Lo: 71°FLo: 22°C |
| POP: 30% | POP: 50% | POP: 40% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 632 AM CDT Sun Sep 20 2026 
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Issued: 636 AM CDT Sun Sep 20 2026
Key Messages
Updated at 633 AM CDT Sun Sep 20 2026- Major to Extreme Heat Risk continues across the populated RGV through at least Tuesday, with Moderate to Major across the rural areas where overnight temperatures will be a little lower each day.
- Record heat for the month-to-date will remain the story through the seven day period and beyond.
- Generally dry weather will prevail through Tuesday or Wednesday, with some potential for increased rain chances and coverage by Wednesday or Thursday. That s...