Weather WorldPlessis, NY Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Plessis Weather Forecast
| REST OF TODAY | TONIGHT | LABOR DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  | | |  |  |  | |  |  | |  |
| Mostly Sunny | Fog | Sunny | Patchy Fog | Partly Sunny | Mostly Cloudy | Showers | Showers | Chance of Showers | Chance of Showers | Sunny | Clear |
| Hi: 70°FHi: 21°C | Lo: 50°FLo: 10°C | Hi: 70°FHi: 21°C | Hi: 75°FHi: 24°C | Lo: 60°FLo: 16°C | Hi: 79°FHi: 26°C | Lo: 61°FLo: 16°C | Hi: 70°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 69°FHi: 21°C | Lo: 50°FLo: 10°C | |
| POP: 80% | POP: 90% | POP: 30% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1000 AM EDT Sun Sep 06 2026 
Plessis Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Plessis Weather Map
Plessis Quick Facts
Plessis Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 348 AM EDT Sun Sep 6 2026
Key Messages
1) Mainly dry uneventful weather expected today through Tuesday.
Discussion
... KEY MESSAGE 1...Mainly dry uneventful weather expected today through Tuesday.
A cool advection will continue with 850 mb temps getting down around +9C. With lake temps still sitting around +22/+23C, this will be enough to elicit a weak lake response. A NNE cross-lake flow over Lake Ontario will produce some lake clouds south of that lake, and with an added boost from upslope flow, there will also be a few li...