Merrian, PA Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Merrian Weather Forecast
| TODAY | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT |
| Partly Sunny | Chance of Showers | Showers | Chance of Showers | Mostly Cloudy | Chance of Showers | Chance of Showers | Chance of Showers | Chance of Showers | Chance of Showers | Chance of Showers | Chance of Showers |
| Hi: 71°FHi: 22°C | Lo: 59°FLo: 15°C | Hi: 70°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 69°FHi: 21°C | Lo: 49°FLo: 9°C | Hi: 60°FHi: 16°C | Lo: 45°FLo: 7°C | Hi: 60°FHi: 16°C | Lo: 49°FLo: 9°C | Hi: 61°FHi: 16°C | Lo: 45°FLo: 7°C |
| POP: 50% | POP: 100% | POP: 90% | POP: 50% | POP: 50% | POP: 40% | POP: 40% | POP: 40% | POP: 40% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1200 PM EDT Sat Sep 19 2026 

Merrian Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Merrian Weather Map
Merrian Quick Facts
Merrian Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 944 AM EDT Sat Sep 19 2026
Key Messages
1) Rain moves in tonight, heavy at times into Sunday.
2) Rainy pattern continues into much of next week, although uncertainty remains in the details. On the cool side as well.
Discussion
... KEY MESSAGE 1: Rain moves in tonight, heavy at times into Sunday.
Some dry air at low levels, most of the radar returns this morning so far have been at mid levels, but added slight chance POPS far western PA to match PBZ, as some rain reaching the ground across the far west as of mid morning.
Earlier...
Weather World