Weather WorldJohnson Space Center, TX Weather Forecast
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Johnson Space Center Weather Forecast
| REST OF TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY |
 |  | | |  | | | | | | | |
| Clear | Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy | Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny |
| Lo: 79°FLo: 26°C | Hi: 95°FHi: 35°C | Lo: 79°FLo: 26°C | Hi: 95°FHi: 35°C | Lo: 79°FLo: 26°C | Hi: 95°FHi: 35°C | Lo: 79°FLo: 26°C | Hi: 99°FHi: 37°C | Lo: 79°FLo: 26°C | Hi: 99°FHi: 37°C | Lo: 79°FLo: 26°C | Hi: 99°FHi: 37°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 122 AM CDT Mon Aug 17 2026 
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Johnson Space Center Forecast Discussion
Issued: 604 AM CDT Mon Aug 17 2026
Key Messages
- Slightly above average summertime heat (upper 90s/lower 100s) will persist through most of the rest of the month across Southeast Texas. The potential for Heat Advisory issuance remains elevated as a result.
- Without adequate precautions outdoors, cumulative impacts of heat and heat stress will remain a significant risk factor to health (especially for heat-sensitive populations).
- Rain chances remain near zero for most of the week, but slight chances of r...