Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average sea temperature
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The straight road of North Street cutting through the green leafy suburbs of the scenic Greenwich City in Connecticut
Weather in January
January, like December, in Greenwich, Connecticut, is a wintry winter month, with an average temperature fluctuating between 26.1°F (-3.3°C) and 35.8°F (2.1°C). January is the coldest month, with an average high-temperature of 35.8°F (2.1°C) and an average low-temperature of 26.1°F (-3.3°C). Weather in January »
Weather in February
The last month of the winter, February, is also a wintry month in Greenwich, Connecticut, with an average temperature fluctuating between 38.3°F (3.5°C) and 27.7°F (-2.4°C). In Greenwich, the average high-temperature in February is practically the same as in January - a still cold 38.3°F (3.5°C). Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Greenwich, Connecticut, with temperature in the range of an average low of 33.8°F (1°C) and an average high of 45°F (7.2°C). In March, the average high-temperature marginally rises from a wintry 38.3°F (3.5°C) in February to a chilly 45°F (7.2°C). Weather in March »
Weather in April
April in Greenwich, Connecticut, is a mild spring month, with an average temperature ranging between min 43.5°F (6.4°C) and max 55.4°F (13°C). In April, the average high-temperature rises from a chilly 45°F (7.2°C) in March to a moderate 55.4°F (13°C). Weather in April »
Weather in May
The last month of the spring, May, is a comfortable month in Greenwich, Connecticut, with an average temperature fluctuating between 66.2°F (19°C) and 53.1°F (11.7°C). In Greenwich, the average high-temperature in May rises from a mild 55.4°F (13°C) in April to a comfortable 66.2°F (19°C). Weather in May »
Weather in June
June, the first month of the summer in Greenwich, is a warm month, with an average temperature fluctuating between 61.5°F (16.4°C) and 74.7°F (23.7°C). In June, the average high-temperature slightly increases from a comfortable 66.2°F (19°C) in May to a moderately hot 74.7°F (23.7°C). Weather in June »
Weather in July
July, like June, in Greenwich, Connecticut, is a moderately hot summer month, with an average temperature varying between 69.1°F (20.6°C) and 82°F (27.8°C). July is the warmest month, with an average high-temperature of 82°F (27.8°C) and an average low-temperature of 69.1°F (20.6°C). The average heat index in July is appraised at a tropical 87.8°F (31°C). Weather in July »
Weather in August
August, the last month of the summer in Greenwich, is also a moderately hot month, with an average temperature varying between 68.7°F (20.4°C) and 80.6°F (27°C). In August, the average high-temperature is almost the same as in July - a still moderately hot 80.6°F (27°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Greenwich, Connecticut, with an average temperature varying between 61.7°F (16.5°C) and 73.4°F (23°C). In Greenwich, the average high-temperature in September marginally drops from a warm 80.6°F (27°C) in August to a still moderately hot 73.4°F (23°C). Weather in September »
Weather in October
October, like September, in Greenwich, Connecticut, is another enjoyable autumn month, with an average temperature fluctuating between 62.4°F (16.9°C) and 51.8°F (11°C). In October, the average high-temperature drops from a warm 73.4°F (23°C) in September to an enjoyable 62.4°F (16.9°C). Weather in October »
Weather in November
November, the last month of the autumn in Greenwich, is also a fresh month, with an average temperature ranging between min 40.6°F (4.8°C) and max 50.9°F (10.5°C). In November, the average high-temperature drops from an enjoyable 62.4°F (16.9°C) in October to a fresh 50.9°F (10.5°C). Weather in November »
Weather in December
The first month of the winter, December, is also a wintry month in Greenwich, Connecticut, with an average temperature varying between 33.3°F (0.7°C) and 41.9°F (5.5°C). In Greenwich, the average high-temperature in December drops from a fresh 50.9°F (10.5°C) in November to a cold 41.9°F (5.5°C). Weather in December »
[Resources]FAQ
What is the coldest month in Greenwich?
With an average high-temperature of 35.8°F (2.1°C) and an average low-temperature of 26.1°F (-3.3°C), January is the coldest month.
What is the driest month in Greenwich?
The months with the least rainfall are January and February Rain falls for 7.9 days and accumulates 2.4" (61mm) of rain.
How much does it rain in Greenwich?
In Greenwich, during the entire year, the rain falls for 165.6 days and collects up to 37.64" (956mm) of precipitation.
When does it snow in Greenwich?
Months with snowfall are January through April, November and December.
How much does it snow in Greenwich?
Throughout the year, in Greenwich, Connecticut, there are 25.5 snowfall days, and 8.78" (223mm) of snow is accumulated.
What is the month with the lowest UV index in Greenwich?
The months with the lowest UV index in Greenwich, Connecticut, are January through March, November and December, with an average maximum UV index of 2.
What are the most humid months in Greenwich?
February, May and December, with an average relative humidity of 75%, are most humid months in Greenwich, Connecticut.
What is the snowiest month in Greenwich?
The month with the most snowfall is February, when snow falls for 7.1 days and typically aggregates up to 2.52" (64mm) of snow.
What is the month with the coldest ocean in Greenwich?
February is the month with the coldest seawater in Greenwich, Connecticut, with an average ocean temperature of 39.4°F (4.1°C).
What is the month with the least sunshine in Greenwich?
With an average of 4.7h of sunshine, February has the least sunshine of the year in Greenwich.
When is Daylight Saving Time (DST) in Greenwich?
On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 5. 2023, at 2:00 am, and the time zone reverts from EDT to EST.
When it does not snow in Greenwich?
May through October are months without snowfall in Greenwich, Connecticut.
When are the longest days in Greenwich?
June has the longest days of the year in Greenwich, with an average of 15h and 5min of daylight.
What is the month with the highest UV index in Greenwich?
June through August, with an average maximum UV index of 6, are months with the highest UV index.
What is the warmest month in Greenwich?
July is the warmest month in Greenwich, with an average high-temperature of 82°F (27.8°C) and an average low-temperature of 69.1°F (20.6°C).
What is the wettest month in Greenwich?
The month with the most rainfall is July, when the rain falls for 18.1 days and typically aggregates up to 4.13" (105mm) of precipitation.
What month has the most sunshine in Greenwich?
July has the most sunshine of the year in Greenwich, with an average of 10.5h of sunshine.
What is the least humid month in Greenwich?
The least humid month is August, with an average relative humidity of 71%.
What is the month with the warmest ocean in Greenwich?
With an average ocean temperature of 73°F (22.8°C), August is the month with the warmest seawater in Greenwich, Connecticut.
What is the month with the shortest days in Greenwich?
December has the shortest days of the year, with an average of 9h and 17min of daylight.
Average temperature
Greenwich, CT
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (35.8°F).
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure
Greenwich, CT
- Average pressure in January:
30.05"Hg - Average pressure in February:
30.03"Hg - Average pressure in March:
30.05"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.05"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.06"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Greenwich, CT
- Average wind speed in January:
9.9mph - Average wind speed in February:
9.6mph - Average wind speed in March:
9.7mph - Average wind speed in April:
9.1mph - Average wind speed in May:
7.5mph - Average wind speed in June:
7mph
- Average wind speed in July:
6.5mph - Average wind speed in August:
6.6mph - Average wind speed in September:
7.5mph - Average wind speed in October:
8.8mph - Average wind speed in November:
9.4mph - Average wind speed in December:
9.6mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity
Greenwich, CT
The months with the highest relative humidity are February, May and December (75%).
The month with the lowest relative humidity is August (71%).
Average rainfall
Greenwich, CT
- Average rainfall in January:
2.4" - Average rainfall in February:
2.4" - Average rainfall in March:
2.83" - Average rainfall in April:
3.11" - Average rainfall in May:
3.11" - Average rainfall in June:
3.27"
- Average rainfall in July:
4.13" - Average rainfall in August:
3.5" - Average rainfall in September:
2.72" - Average rainfall in October:
3.46" - Average rainfall in November:
2.83" - Average rainfall in December:
3.86"
The wettest month (with the highest rainfall) is July (4.13").
The driest months (with the least rainfall) are January and February (2.4").
Average rainfall days
Greenwich, CT
- Average rainfall days in January:
7.9 days - Average rainfall days in February:
10.5 days - Average rainfall days in March:
12.8 days - Average rainfall days in April:
15.5 days - Average rainfall days in May:
17.5 days - Average rainfall days in June:
17 days
- Average rainfall days in July:
18.1 days - Average rainfall days in August:
16.8 days - Average rainfall days in September:
13.5 days - Average rainfall days in October:
13.8 days - Average rainfall days in November:
10.2 days - Average rainfall days in December:
12 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is January (7.9 days).
Average snowfall
Greenwich, CT
The month with the highest snowfall is February (2.52").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Greenwich, CT
- Average snowfall days in January:
7.2 days - Average snowfall days in February:
7.1 days - Average snowfall days in March:
5 days - Average snowfall days in April:
0.5 days - Average snowfall days in May:
0.1 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
1 days - Average snowfall days in December:
4.6 days
The month with the highest number of snowfall days is January (7.2 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average sea temperature
Greenwich, CT
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 / Average sunshine
Greenwich, CT
- Average daylight in January:
9h and 37min - Average daylight in February:
10h and 40min - Average daylight in March:
11h and 58min - Average daylight in April:
13h and 20min - Average daylight in May:
14h and 30min - Average daylight in June:
15h and 5min
- Average daylight in July:
14h and 47min - Average daylight in August:
13h and 46min - Average daylight in September:
12h and 28min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 54min - Average daylight in December:
9h and 17min
The month with the longest days is June (Average daylight: 15h and 5min).
The month with the shortest days is December (Average daylight: 9h and 17min).
- Average sunshine in January:
5h and 0min - Average sunshine in February:
4h and 42min - Average sunshine in March:
6h and 12min - Average sunshine in April:
8h and 12min - Average sunshine in May:
8h and 42min - Average sunshine in June:
9h and 30min
- Average sunshine in July:
10h and 30min - Average sunshine in August:
10h and 18min - Average sunshine in September:
8h and 48min - Average sunshine in October:
5h and 48min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days
Greenwich, CT
- Average sunshine days in January:
17.6 days - Average sunshine days in February:
13.5 days - Average sunshine days in March:
14 days - Average sunshine days in April:
12.7 days - Average sunshine days in May:
11.5 days - Average sunshine days in June:
10.7 days
- Average sunshine days in July:
11.1 days - Average sunshine days in August:
11.8 days - Average sunshine days in September:
14.3 days - Average sunshine days in October:
15 days - Average sunshine days in November:
17.8 days - Average sunshine days in December:
15.2 days
The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is June (10.7 days).
Average UV index
Greenwich, CT
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
Greenwich, CT
The month with the most cloud cover is December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility
Greenwich, CT
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
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