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Myrtle, MO Weather Forecast
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Myrtle Weather Forecast
| REST OF TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | SATURDAY | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY |
 |  | | | | | | |  |  |  |  |
| Mostly Clear | Sunny | Mostly Clear | Sunny | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Clear | Chance of T-Storm | Chance of T-Storm | Partly Cloudy | Chance of Showers |
| Lo: 71°FLo: 22°C | Hi: 99°FHi: 37°C | Lo: 71°FLo: 22°C | Hi: 100°FHi: 38°C | Lo: 70°FLo: 21°C | Hi: 99°FHi: 37°C Lo: 69°FLo: 21°C | Hi: 99°FHi: 37°C Lo: 69°FLo: 21°C | Hi: 99°FHi: 37°C Lo: 69°FLo: 21°C | Lo: 65°FLo: 18°C | Hi: 89°FHi: 32°C | Lo: 61°FLo: 16°C | Hi: 85°FHi: 29°C |
| POP: 20% | POP: 40% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 547 PM CDT Tue Sep 15 2026 
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Issued: 549 PM CDT Tue Sep 15 2026
Key Messages
- A Heat Advisory is now 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.
- There is a 20-40% chance of scattered thunderstorms this afternoon into tonight, north of I-44. There is a Marginal (1 of 5) Risk of severe weather for locations north of Highway 54 with the main risks being damaging winds, locally heavy rainfall, and lightning. ...