Umbm, MI Weather Forecast
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Umbm Weather Forecast
| THIS AFTERNOON | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT |
| Chance of T-Storm | Chance of Showers | Chance of Showers | Mostly Clear | Mostly Sunny | Patchy Fog | Mostly Sunny | Chance of Showers | Chance of T-Storm | Chance of Showers | Partly Sunny | Partly Cloudy |
| Hi: 71°FHi: 22°C | Lo: 59°FLo: 15°C | Hi: 65°FHi: 18°C | Lo: 55°FLo: 13°C | Hi: 70°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C | Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C | Hi: 75°FHi: 24°C | Lo: 55°FLo: 13°C |
| POP: 30% | POP: 20% | POP: 40% | POP: 40% | POP: 70% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1012 AM EDT Sat Aug 22 2026 

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Umbm Forecast Discussion
Issued: 634 AM EDT Sat Aug 22 2026
Key Messages
-- Rain/storms today.
-- Breezy, cool, and showery Sunday with high swim risks.
Discussion
... Issued at 310 AM EDT Sat Aug 22 2026
PATTERN SYNOPSIS/FORECAST:
Ridge axis stretches from British Columbia down to the Four Corners region, where the 598/599dm upper level heat dome remains in place...with an upper low just off the West Coast poised to try to eject northward. Meanwhile, downstream, NW flow overtaking the Central US, with sharp trough axis focused from KY northward through MI int...
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