Weather World
About Plum Island BeachPlum Island, MA Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Plum Island Weather Forecast
| TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | FRIDAY | SATURDAY | SATURDAY NIGHT | SUNDAY |
 |  |  |  |  |  |  | | | | |
| Showers Likely | Chance of Showers | Patchy Fog | Partly Cloudy | Mostly Sunny | Mostly Clear | Partly Cloudy | Partly Cloudy | Chance of Showers | Chance of Showers | Chance of Showers |
| Hi: 75°FHi: 24°C | Lo: 65°FLo: 18°C | Hi: 79°FHi: 26°C | Lo: 65°FLo: 18°C | Hi: 85°FHi: 29°C | Lo: 69°FLo: 21°C | Hi: 81°FHi: 27°C Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C |
| POP: 60% | POP: 40% | POP: 30% | POP: 30% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 704 AM EDT Mon Aug 17 2026 
Plum Island Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Plum Island Weather Map
Plum Island Quick Facts
Plum Island Forecast Discussion
Issued: 719 AM EDT Mon Aug 17 2026
Key Messages
- Showers and extensive cloud cover lead to a cooler-than- normal and quite humid day. A High Risk for rip currents remains in effect for south-facing ocean beaches.
- Mainly dry Tuesday, with only isolated showers possible across eastern southern New England. Seasonable temperatures continue, with a High Risk for rip currents along east-facing ocean beaches.
- No washouts expected, though several opportunities for showers return from mid to late week.