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Greenwich Common Weather Forecast
| TODAY | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  | |  |  |  | |  |  |  | | |
| Chance of T-Storm | Chance of Showers | Chance of T-Storm | Chance of T-Storm | Sunny | Mostly Clear | Sunny | Partly Cloudy | Chance of Showers | Showers | Chance of Showers | Chance of Showers |
| Hi: 79°FHi: 26°C | Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C | Lo: 60°FLo: 16°C | Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 80°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C |
| POP: 70% | POP: 20% | POP: 20% | POP: 20% | POP: 40% | POP: 60% | POP: 50% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 322 AM EDT Sun Aug 23 2026 
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Greenwich Common Forecast Discussion
Issued: 435 AM EDT Sun Aug 23 2026
Key Messages
1) Chances for showers and thunderstorms through today with low pressure and cold front moving through. Some thunderstorms could be strong with a marginal risk for severe thunderstorms.
2) Possible lingering showers Monday into early Monday evening. Otherwise mainly dry with high pressure eventually building back in Monday night into midweek.
3) Chances for showers and thunderstorm return Thursday and Friday.
Discussion
... .KEY MESSAGE 1... Heights lowering in mid levels as a closed low...