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Hamilton Weather Forecast
| TODAY | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT |
| Mostly Cloudy | Partly Cloudy | Showers | Chance of Showers | Partly Sunny | Partly Cloudy | Partly Sunny | Showers | Showers | Mostly Cloudy | Chance of Showers | Chance of Showers |
| Hi: 79°FHi: 26°C | Lo: 60°FLo: 16°C | Hi: 75°FHi: 24°C | Lo: 55°FLo: 13°C | Hi: 71°FHi: 22°C | Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C | Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C | Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C | Lo: 49°FLo: 9°C |
| POP: 80% | POP: 50% | POP: 70% | POP: 70% | POP: 40% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 335 AM EDT Wed Sep 16 2026 

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Issued: 151 AM EDT Wed Sep 16 2026
Key Messages
1) Warming over the next couple of days as upper level ridging builds in with a few chances of rain showers and thunderstorms as we head into the weekend.
2) Watching potential for a stalling front late this weekend into early next week that could bring more persistent rainfall which may be heavy at times.
Discussion
... KEY MESSAGE 1...
Strong ridge of high pressure south of the region keeps zonal flow over the area today with westerly flow. A shortwave tough is moving through this morn...
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