January weather forecast and climate
Greenwich, CT

What is the coldest month in Greenwich?

With an average high-temperature of 36°F (2.2°C) and an average low-temperature of 21°F (-6.1°C), January is the coldest month in Greenwich.

What is the temperature in January in Greenwich?

The average high-temperature, in January, in Greenwich, Connecticut, is 36°F (2.2°C), while the average low-temperature is 21°F (-6.1°C).

How much does it rain in Greenwich in January?

Throughout January, in Greenwich, 4.3" (109.7mm) of precipitation is accumulated.

How much does it snow in Greenwich in January?

During January, Greenwich regularly aggregates up to 7.7" (195.6mm) of snow.
Average temperature in January - Greenwich, CT
  • Average high temperature in January: 36°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 January: 21°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 January - Greenwich, CT
  • Average rainfall in January: 4.3"

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 January - Greenwich, CT
  • Average snowfall in January: 7.7"

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 January - Greenwich, CT
  • Average sea temperature in January: 41.6°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 January - Greenwich, CT
  • Average daylight in January: 9.6h

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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