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Jefferson County Weather Forecast
| OVERNIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
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| Mostly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Showers | Showers | Showers | Showers | Chance of Showers | Chance of Showers | Mostly Cloudy | Mostly Sunny |
| Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 69°FHi: 21°C | Lo: 55°FLo: 13°C | Hi: 61°FHi: 16°C | Lo: 50°FLo: 10°C | Hi: 60°FHi: 16°C | Lo: 50°FLo: 10°C | Hi: 61°FHi: 16°C | Lo: 49°FLo: 9°C | Hi: 65°FHi: 18°C |
| POP: 80% | POP: 70% | POP: 50% | POP: 80% | POP: 90% | POP: 70% | POP: 70% | POP: 50% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 225 AM EDT Sun Sep 20 2026 
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Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 820 PM EDT Sat Sep 19 2026
Key Messages
- 1) Scattered showers and perhaps a few thunderstorms look to finish out the weekend as a front passes through.
- 2) Daily shower chances and cooler temperatures persists through midweek with drier conditions for the upcoming weekend.
Discussion
... KEY MESSAGE 1...Scattered showers and perhaps a few thunderstorms look to finish out the weekend as a front passes through.
Added some light showers and sprinkles in across central and western MD this evening as spotty activity drops south from...