Weather World
City of Groton, ConnecticutGroton, CT Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Groton Weather Forecast
| TODAY | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT |
 |  | |  |  |  | | | | | | |
| Mostly Sunny | Partly Cloudy | Mostly Sunny | Chance of Showers | Chance of Showers | Chance of Showers | Showers | Showers | Showers Likely | Chance of Showers | Chance of Showers | Partly Cloudy |
| Hi: 65°FHi: 18°C | Lo: 51°FLo: 11°C | Hi: 65°FHi: 18°C | Lo: 49°FLo: 9°C | Hi: 65°FHi: 18°C | Lo: 51°FLo: 11°C | Hi: 65°FHi: 18°C | Lo: 51°FLo: 11°C | Hi: 65°FHi: 18°C | Lo: 51°FLo: 11°C | Hi: 69°FHi: 21°C | Lo: 51°FLo: 11°C |
| POP: 20% | POP: 50% | POP: 70% | POP: 70% | POP: 70% | POP: 60% | POP: 50% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 233 AM EDT Wed Sep 23 2026 
Groton Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Groton Weather Map
Groton Quick Facts
Groton Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 318 AM EDT Wed Sep 23 2026
Key Messages
1) A coastal storm could impact the area from Friday into Sunday.
2) Coastal flooding, high surf and beach erosion could become a concern this week, especially with the approach of the storm Friday into Sunday.
3) A high rip current risk will persist into the weekend.
Discussion
... .KEY MESSAGE 1... Global models in agreement with a coastal low tracking SE of us during the Friday-Saturday period, but differences show up regarding how close the center of the storm will be and whether or ...