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Grigsby, TX Weather Forecast
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| TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
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| Mostly Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Partly Cloudy | Partly Cloudy | Mostly Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy |
| 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 | Hi: 95°FHi: 35°C | Lo: 70°FLo: 21°C | Hi: 95°FHi: 35°C | Lo: 71°FLo: 22°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 627 AM CDT Mon Sep 14 2026 
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Issued: 622 AM CDT Mon Sep 14 2026
Key Messages
Issued at 1234 AM CDT Mon Sep 14 2026- The last full week of summer will feel more like the middle of summer with mid and upper 90s to lower 100s each day, extending heat advisory headlines through at least mid-week.
- Although rain chances aren`t zero, the majority of the region will remain dry throughout the week with only slightly better rain chances across our eastern zones later this afternoon.
- The upper-level ridge is expected to weaken by next weekend as an upper low drifts westw...