Harmonsburg, PA Weather Forecast
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Harmonsburg Weather Forecast
| TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
| Sunny | Partly Cloudy | Clearing | Clear | Sunny | Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Clear | Mostly Sunny | Mostly Clear |
| Hi: 65°FHi: 18°C | Lo: 39°FLo: 4°C | Hi: 65°FHi: 18°C | Lo: 35°FLo: 2°C | Hi: 61°FHi: 16°C | Lo: 35°FLo: 2°C | Hi: 65°FHi: 18°C | Lo: 40°FLo: 4°C | Hi: 61°FHi: 16°C | Lo: 35°FLo: 2°C | Hi: 61°FHi: 16°C | Lo: 39°FLo: 4°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 247 AM EDT Mon Oct 19 2026 

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Issued: 200 AM EDT Mon Oct 19 2026
Key Messages
1) Dry and seasonable weather is expected through this weekend.
Discussion
... KEY MESSAGE 1... A remarkably stagnant and tranquil weather pattern is in store for the foreseeable future. Through the work week the local area will be sandwiched between ridging aloft over the central U.S. and troughing over the Northeast. This will support general surface high pressure, dry weather and seasonable temperatures. Ridging aloft is expected to shift east this weekend, keeping us dry but likely...
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