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Sullivan Weather Forecast
| REST OF TODAY | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
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| Chance of Showers | Chance of Showers | Patchy Fog | Clear | Mostly Sunny | Partly Cloudy | Partly Sunny | Partly Cloudy | Chance of Showers | Chance of Showers | Partly Sunny | Mostly Clear |
| Hi: 70°FHi: 21°C | Lo: 55°FLo: 13°C | Hi: 69°FHi: 21°C | Lo: 41°FLo: 5°C | Hi: 69°FHi: 21°C | Lo: 49°FLo: 9°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: 50°FLo: 10°C |
| POP: 50% | POP: 20% | POP: 40% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 235 PM EDT Sun Sep 13 2026 
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Issued: 257 PM EDT Sun Sep 13 2026
Key Messages
1. Low pressure and steady rain exits east this evening. Areas of fog are likely tonight before a cold front crosses that will bring chances for couple of thunderstorms near the CT Valley late this evening.
2. High pressure will build across New England for the first half of this week, bringing mainly dry conditions and cool temperatures. A frontal boundary will bring increased shower chances late in the week.
Discussion
... KEY MESSAGE 1 DESCRIPTION...
Low pressure will continue its tre...