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Belleville Weather Forecast
| REST OF TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY |
 |  |  | | | | | | | | | |
| Patchy Fog | Sunny | Clear | Sunny | Clear | Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny |
| Lo: 51°FLo: 11°C | Hi: 65°FHi: 18°C | Lo: 40°FLo: 4°C | Hi: 61°FHi: 16°C | Lo: 40°FLo: 4°C | Hi: 71°FHi: 22°C | Lo: 49°FLo: 9°C | Hi: 71°FHi: 22°C | Lo: 49°FLo: 9°C | Hi: 70°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 69°FHi: 21°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 130 AM EDT Mon Oct 05 2026 
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Issued: 201 AM EDT Mon Oct 5 2026
Key Messages
1) Frost/freeze conditions are probable Monday night into early Tuesday morning over the western and central Alleghenies
2) Extended stretch of dry and seasonal Fall weather this week
Discussion
... KEY MESSAGE 1: Frost/freeze conditions are probable Monday night into early Tuesday morning over the western & central Alleghenies
As of mid evening, partial clearing into our western areas, but the cold front is lagging to the northwest over southern Ontario. A rather deep upper level trough...