Weather World
Altmar, NY Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Altmar Weather Forecast
| REST OF TODAY | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  |  |  | |  |  |  | | | | |
| Chance of T-Storm | Chance of T-Storm | Sunny | Clear | Mostly Sunny | Chance of Showers | Chance of Showers | Mostly Cloudy | Chance of Showers | Chance of Showers | Chance of Showers | Chance of Showers |
| Lo: 50°FLo: 10°C | Hi: 60°FHi: 16°C | Lo: 59°FLo: 15°C | Hi: 75°FHi: 24°C | Lo: 59°FLo: 15°C | Hi: 75°FHi: 24°C | Lo: 59°FLo: 15°C | Hi: 71°FHi: 22°C | Lo: 51°FLo: 11°C | |||
| POP: 60% | POP: 50% | POP: 40% | POP: 40% | POP: 50% | POP: 50% | POP: 40% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1000 AM EDT Sun Sep 13 2026 
Altmar Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Altmar Weather Map
Altmar Quick Facts
Altmar Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 650 AM EDT Sun Sep 13 2026
Key Messages
1) Warm and humid conditions will continue today, with showers and scattered thunderstorms through this evening.
2) Brief cooldown Monday through early Tuesday morning, then trending warmer and unsettled through the middle of the week.
Discussion
... KEY MESSAGE 1...Warm and humid conditions will continue today, with showers and scattered thunderstorms through this evening.
GOES water vapor imagery shows a southern stream shortwave trough across Pennsylvania early this morning. An axis o...