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Town of Winthrop, MAWinthrop, MA Weather Forecast
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Winthrop Weather Forecast
| TODAY | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT |
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| Sunny | Chance of Showers | Showers | Patchy Fog | Mostly Sunny | Mostly Clear | Sunny | Mostly Clear | Partly Cloudy | Partly Cloudy | Chance of Showers | Chance of Showers |
| Hi: 75°FHi: 24°C | Lo: 61°FLo: 16°C | Hi: 75°FHi: 24°C | Lo: 61°FLo: 16°C | Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C | Hi: 65°FHi: 18°C | Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C Lo: 61°FLo: 16°C | Hi: 80°FHi: 27°C Lo: 61°FLo: 16°C | Hi: 80°FHi: 27°C Lo: 61°FLo: 16°C |
| POP: 20% | POP: 100% | POP: 30% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 450 AM EDT Sat Sep 12 2026 
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Meteorlogic Glosserator
Instant definitions for any meteorological term.
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Issued: 721 AM EDT Sat Sep 12 2026
Key Messages
- Showers, and possibly a few thunderstorms, with pockets of torrential rainfall possible early Sun am into the afternoon. A Flood Watch has been issued for RI and southeast MA.
- Any lingering scattered showers depart early Mon...otherwise dry/seasonable Mon-Tue but a brief bout of summer warmth and humidity possible Wed and/or Thu ahead of a cold front.
Discussion
... KEY MESSAGE 1...Showers, and possibly a few thunderstorms, with pockets of torrential rainfall possible early Sun am into...