Jessup, PA Weather Forecast
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Jessup Weather Forecast
| TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
| Partly Sunny | Chance of Showers | Chance of Showers | Partly Cloudy | Partly Sunny | Partly Cloudy | Partly Sunny | Partly Cloudy | Chance of Showers | Chance of Showers | Partly Sunny | Partly Cloudy |
| Hi: 69°FHi: 21°C | Lo: 49°FLo: 9°C | Hi: 61°FHi: 16°C | Lo: 45°FLo: 7°C | Hi: 61°FHi: 16°C | Lo: 41°FLo: 5°C | Hi: 61°FHi: 16°C | Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C |
| POP: 50% | POP: 50% | POP: 30% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 635 AM EDT Mon Sep 21 2026 

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Issued: 645 AM EDT Mon Sep 21 2026
Key Messages
1) A wave of low pressure will move slowly east along a remnant frontal boundary Monday night into Tuesday, Possibly bringing rain to Northeast PA.
2) High pressure nudges in from the north, bringing dry, partly sunny and seasonably cool weather mid week.
3) Watching a potential coastal low for the end of the work week into next weekend that looks to meander along the southern New England shore.
Discussion
... KEY MESSAGE 1...
Still quite a bit of low level moisture around this morning wi...
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