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Harthaven Weather Forecast
| TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | FRIDAY | SATURDAY | SUNDAY | SUNDAY NIGHT | COLUMBUS DAY |
 |  | | | | | | | |  |  |
| Clear | Sunny | Clear | Sunny | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Clear | Mostly Cloudy | Chance of Showers |
| Lo: 45°FLo: 7°C | Hi: 60°FHi: 16°C | Lo: 41°FLo: 5°C | Hi: 61°FHi: 16°C | Lo: 60°FLo: 16°C | Hi: 65°FHi: 18°C Lo: 55°FLo: 13°C | Hi: 65°FHi: 18°C Lo: 55°FLo: 13°C | Hi: 65°FHi: 18°C Lo: 55°FLo: 13°C | Hi: 65°FHi: 18°C Lo: 55°FLo: 13°C | Lo: 59°FLo: 15°C | Hi: 65°FHi: 18°C |
| POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 403 PM EDT Mon Oct 05 2026 
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Instant definitions for any meteorological term.
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Issued: 240 PM EDT Mon Oct 5 2026
Key Messages
- Mostly dry with continued fall temperatures. An early look at the holiday weekend favors dry weather, though late Sunday into Monday bears watching for rain.
Discussion
... KEY MESSAGE 1...Mostly dry with continued fall temperatures. An early look at the holiday weekend favors dry weather, though late Sunday into Monday bears watching for rain.
Dissipating showers moving east across southern New England this afternoon could result in a couple of hours with stronger gusts than what we ha...