Williamsburg, MI Weather Forecast
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Williamsburg Weather Forecast
| OVERNIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY |
| Partly Cloudy | Chance of T-Storm | Partly Cloudy | Partly Sunny | Mostly Clear | Partly Sunny | Rain | Rain | Partly Cloudy | Partly Sunny | Chance of Rain | Chance of Rain |
| Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C | Lo: 55°FLo: 13°C | Hi: 69°FHi: 21°C | Lo: 49°FLo: 9°C | Hi: 70°FHi: 21°C | Lo: 55°FLo: 13°C | Hi: 71°FHi: 22°C | Lo: 55°FLo: 13°C | Hi: 69°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 69°FHi: 21°C |
| POP: 50% | POP: 60% | POP: 40% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1012 PM EDT Fri Sep 11 2026 

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Issued: 729 PM EDT Fri Sep 11 2026
Key Messages
- Shower/thunderstorm chances along a passing cold front Saturday
- Cooler with some small rain chances Sunday
- More substantial rain event arrives Monday night/Tuesday; heavy rainfall potential.
Discussion
... Issued at 309 PM EDT Fri Sep 11 2026
Primary Forecast Concerns:
Shower/thunderstorm chances along a passing cold front Saturday: Surface cold front lying across northwest Ontario/northwest Minnesota/southeast North Dakota at early afternoon is forecast to propagate east through tonight...
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