New Haven weather in March 2025

Expect 46°F daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in New Haven in March. Check more long-term weather averages for New Haven in March before you book your next holiday to Connecticut in 2025/2026.

  • 46°F maximum daytime temperature in March in New Haven46
    46°F max day temperature
  • 7 hours of sunshine per day
  • 11 days with some rainfall in March in New Haven11
    11 days with some rainfall
  • 28°F minimum night-time temperature in March in New Haven28
    28°F min night temperature
  • 12 hours of daylight per day in March in New Haven12
    12 hours of daylight per day
  • No heat & humidity in March in New Haven0
    No heat & humidity
  • 4.0 inches monthly rainfall in March in New Haven4.0
    4.0 inches of monthly rainfall
  • UV (maximum) index 4 (Moderate) in March in New Haven4
    4 (Moderate) UV index
  • 37°F sea temperature in March in New Haven37
    37°F sea temperature

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The March 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 warm is it in New Haven in March?

Daytime temperatures usually reach 46°F in New Haven in March, falling to 28°F at night.

How sunny is it in New Haven in March?

There are normally 7 hours of bright sunshine each day in New Haven in March - that's 60% of daylight hours.

How warm is the sea around New Haven in March?

The average sea temperature around New Haven in March is 37°F.

Does it rain in New Haven in March?

There are usually 11 days with some rain in New Haven in March and the average monthly rainfall is 4.0 inches.

New Haven March sunrise & sunset times

Browse the sunrise and sunset times for New Haven in March 2025. Select a month to view New Haven sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Saturday, 1st March 2025 06:26 17:43
Sunday, 16th March 2025 06:01 18:00
Monday, 31st March 2025 05:36 18:16

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