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St Marys Weather Forecast
| TODAY | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  |  |  |  |  | |  |  | | | |
| Partly Sunny | Chance of Showers | Chance of T-Storm | Chance of T-Storm | Mostly Sunny | Mostly Clear | Sunny | Chance of Showers | Chance of Showers | Chance of Showers | Sunny | Chance of Showers |
| Hi: 80°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 80°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 85°FHi: 29°C | Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C |
| POP: 90% | POP: 90% | POP: 40% | POP: 30% | POP: 50% | POP: 40% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 220 AM EDT Sun Aug 16 2026 
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St Marys Forecast Discussion
Issued: 1036 AM EDT Sun Aug 16 2026
Key Messages
1) Showers and a few thunderstorms this evening through a portion of Monday morning may produce locally heavy downpours. Minor urban and poor drainage flooding is the main concern, but a localized flash flood risk exists close to the coast.
2) Dry with near normal temperatures Monday night through Wednesday before the next chance of a shower or thunderstorm on Wednesday night into Thursday.
Discussion
... .KEY MESSAGE 1... High pressure shifts offshore thro...