New Haven weather in January 2026

Expect daytime maximum temperatures of 36°F in New Haven, Connecticut in January based on long-term weather averages. There are 6 hours of sunshine per day on average with 10 days with some rainfall and typically 3.2 inches of rainfall in the month, which might fall as snow.

  • 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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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 2026. Select a month to view New Haven sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st January 2026 07:18 16:33
Friday, 16th January 2026 07:15 16:49
Saturday, 31st January 2026 07:04 17:07

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