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Middlesex Valley Weather Forecast
| THIS AFTERNOON | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
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| Sunny | Clear | Sunny | Mostly Clear | Partly Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy | Mostly Sunny | Mostly Clear |
| Hi: 61°FHi: 16°C | Lo: 39°FLo: 4°C | Hi: 65°FHi: 18°C | Lo: 41°FLo: 5°C | Hi: 61°FHi: 16°C | Lo: 39°FLo: 4°C | Hi: 61°FHi: 16°C | Lo: 39°FLo: 4°C | Hi: 61°FHi: 16°C | Lo: 41°FLo: 5°C | Hi: 59°FHi: 15°C | Lo: 35°FLo: 2°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1235 PM EDT Sun Oct 18 2026 
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Instant definitions for any meteorological term.
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Issued: 137 PM EDT Sun Oct 18 2026
Key Messages
1) High pressure will keep conditions dry and warmer for at least the next week.
Discussion
... KEY MESSAGE 1...
Big bubble and absolutely no trouble. A prolonged period of dry conditions is expected with high pressure remaining over the region for at least the next week. Days will see high temperatures in the 60s. Expect large diurnal temperature swings, with mostly clear conditions at night and light winds making way for efficient radiational cooling. Lows will generally be in the 30s...