May weather forecast and climate
Greenwich, CT

What is the temperature in May in Greenwich?

The average high-temperature, in May, in Greenwich, is 69.1°F (20.6°C), while the average low-temperature is 50°F (10°C).

How much does it rain in Greenwich in May?

During May, Greenwich regularly aggregates up to 4.6" (116.3mm) of precipitation.

Does it snow in Greenwich in May?

In May, it doesn't snow. April is the latest month when it typically snows.
Average temperature in May - Greenwich, CT
  • Average high temperature in May: 69°F

The warmest month (with the highest average high temperature) is July (83°F).
The month with the lowest average high temperature is January (36°F).

  • Average low temperature in May: 50°F

The month with the highest average low temperature is July (65°F).
The coldest month (with the lowest average low temperature) is January (21°F).

Average rainfall in May - Greenwich, CT
  • Average rainfall in May: 4.6"

Wettest months (with the highest rainfall) are March and September (4.7").
The driest month (with the lowest rainfall) is February (3.2").

Average snowfall in May - Greenwich, CT
  • Average snowfall in May: 0"

The month with the highest snowfall is February (8.3").
Months with the lowest snowfall are May, June, July, August, September and October (0").

Average sea temperature in May - Greenwich, CT
  • Average sea temperature in May: 51.4°F

The best month for swimming (with the highest average sea temperature) is August (73.1°F).
The coldest month (with the lowest average sea temperature) is February (39.5°F).

Average daylight in May - Greenwich, CT
  • Average daylight in May: 14.5h

The month with the longest days is June (Average daylight: 15.1h).
The month with shortest days is December (Average daylight: 9.3h).

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