New Haven weather in January 2025

Expect 36°F daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in New Haven in January. Check more long-term weather averages for New Haven in January before you book your next holiday to Connecticut in 2025/2026.

  • 36°F maximum daytime temperature in January in New Haven36
    36°F max day temperature
  • 6 hours of sunshine per day
  • 10 days with some rainfall in January in New Haven10
    10 days with some rainfall
  • 21°F minimum night-time temperature in January in New Haven21
    21°F min night temperature
  • 10 hours of daylight per day in January in New Haven10
    10 hours of daylight per day
  • No heat & humidity in January in New Haven0
    No heat & humidity
  • 3.2 inches monthly rainfall in January in New Haven3.2
    3.2 inches of monthly rainfall
  • UV (maximum) index 2 (Low) in January in New Haven2
    2 (Low) UV index
  • 39°F sea temperature in January in New Haven39
    39°F sea temperature

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The January 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)  |  Imperial (°F)

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More about the USA

How cold is it in New Haven in January?

Daytime temperatures usually reach 36°F in New Haven in January, falling to 21°F at night.

How sunny is it in New Haven in January?

There are normally 6 hours of bright sunshine each day in New Haven in January - that's 57% of daylight hours.

How warm is the sea around New Haven in January?

The average sea temperature around New Haven in January is 39°F.

Does it rain in New Haven in January?

There are usually 10 days with some rain in New Haven in January and the average monthly rainfall is 3.2 inches. Rain may fall as snow in this month.

New Haven January sunrise & sunset times

Browse the sunrise and sunset times for New Haven in January 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 January 2025 07:18 16:34
Thursday, 16th January 2025 07:15 16:49
Friday, 31st January 2025 07:04 17:07

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