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Frederick, PA Weather Forecast
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Frederick Weather Forecast
| TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | LABOR DAY | MONDAY NIGHT | TUESDAY |
 |  | |  |  |  |  | | | |  | |
| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Chance of Showers | Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny | Partly Cloudy | Mostly Sunny |
| Lo: 69°FLo: 21°C | Hi: 89°FHi: 32°C | Lo: 70°FLo: 21°C | Hi: 85°FHi: 29°C | Lo: 61°FLo: 16°C | Hi: 80°FHi: 27°C | Lo: 59°FLo: 15°C | Hi: 75°FHi: 24°C | Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C | Hi: 80°FHi: 27°C |
| POP: 60% | POP: 50% | POP: 50% | POP: 50% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 400 PM EDT Wed Sep 02 2026 
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Issued: 433 PM EDT Wed Sep 2 2026
Key Messages
1. Through tonight, a shortwave trough could spark another round of showers and storms, but it will be working against a relatively stable boundary layer.
2. Hot and humid conditions are forecast across the region on Thursday.
3. Unsettled conditions will continue on Thursday with the potential for severe thunderstorms. Scattered thunderstorms are again possible on Friday, mainly south of Philadelphia.
4. The Labor Day Weekend will feature mostly dry weather with at or below normal temp...