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Mercer County Weather Forecast
| TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY |
 |  |  |  |  | | |  | | | | |
| Chance of T-Storm | Clearing | Mostly Clear | Becoming Cloudy | Chance of Showers | Clearing | Mostly Clear | Sunny | Clear | Sunny | Mostly Clear | Sunny |
| Lo: 59°FLo: 15°C | Hi: 71°FHi: 22°C | Lo: 55°FLo: 13°C | Hi: 65°FHi: 18°C | Lo: 55°FLo: 13°C | Hi: 70°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 61°FHi: 16°C | Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 69°FHi: 21°C |
| POP: 60% | POP: 50% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 400 PM EDT Fri Oct 02 2026 
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Instant definitions for any meteorological term.
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Issued: 246 AM EDT Sat Oct 3 2026
Key Messages
1. A cold front this evening will bring scattered showers and cooler temperatures for tonight and into the weekend.
2. Showers are expected to impact portions of the region Sunday and Sunday night, followed by much cooler temperatures during the first half of next week.
3. Canadian high pressure will bring much cooler temperatures during the first half of next week, including some potential for frost near and north of I-78 Tuesday night.
Discussion
... KEY MESSAGE 1...A cold front this e...