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Johnston School, MO Weather Forecast
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Johnston School Weather Forecast
| TODAY | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT |
 |  |  |  |  | | | |  | | |  |
| Clearing | Chance of T-Storm | Chance of T-Storm | Mostly Clear | Sunny | Mostly Clear | Mostly Sunny | Chance of T-Storm | Chance of Showers | Chance of T-Storm | Chance of T-Storm | Chance of Showers |
| 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: 71°FLo: 22°C | Hi: 91°FHi: 33°C | Hi: 81°FHi: 27°C Lo: 69°FLo: 21°C | Hi: 81°FHi: 27°C Lo: 69°FLo: 21°C | Lo: 61°FLo: 16°C |
| POP: 20% | POP: 20% | POP: 20% | POP: 50% | POP: 50% | POP: 50% | POP: 50% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 347 AM CDT Wed Sep 16 2026 
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Issued: 626 AM CDT Wed Sep 16 2026
Key Messages
- A Heat Advisory is in effect for the entire area through Friday. Highs in the 90s with heat index values of 100-105 can be expected. Overnight lows will only drop into the 70s. Several daily records may be tied or broken.
- Isolated showers and storms will be possible this afternoon with up to 20% chance. Most will remain dry.
Aviation
/12Z TAFS THROUGH 12Z THURSDAY/... Issued at 624 AM CDT Wed Sep 16 2026
VFR conditions through the period. Some passing high cloud cover in central MO at t...