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New Haven weather in October 2025
Expect 18°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in New Haven in October. Check more long-term weather averages for New Haven in October before you book your next holiday to Connecticut in 2025/2026.
- 1818°C max day temperature
- 7 hours of sunshine per day
- 77 days with some rainfall
- 77°C min night temperature
- 1111 hours of daylight per day
- 0No heat & humidity
- 8787 mm of monthly rainfall
- 44 (Moderate) UV index
- 1717°C sea temperature
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Recommended for Connecticut
The October weather guide for Connecticut (New Haven) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
More about the USA
How hot is it in New Haven in October?
Daytime temperatures usually reach 18°C in New Haven in October, falling to 7°C at night.
How sunny is it in New Haven in October?
There are normally 7 hours of bright sunshine each day in New Haven in October - that's 61% of daylight hours.
How warm is the sea around New Haven in October?
The average sea temperature around New Haven in October is 17°C.
Does it rain in New Haven in October?
There are usually 7 days with some rain in New Haven in October and the average monthly rainfall is 87mm.
New Haven October sunrise & sunset times
Browse the sunrise and sunset times for New Haven in October 2025. Select a month to view New Haven sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Wednesday, 1st October 2025 | 05:49 | 17:33 |
Thursday, 16th October 2025 | 06:05 | 17:09 |
Friday, 31st October 2025 | 06:22 | 16:48 |
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