Monthly weather forecast and climate
Groton, NY

January, the same as December, in Groton, New York, is a freezing cold winter month, with temperature in the range of an average low of 16.2°F (-8.8°C) and an average high of 27.5°F (-2.5°C). January is the coldest month, with an average high-temperature of 27.5°F (-2.5°C) and an average low-temperature of 16.2°F (-8.8°C). Weather in January »

February, the last month of the winter, in Groton, is also a subzero cold month, with temperature in the range of an average low of 18°F (-7.8°C) and an average high of 30.6°F (-0.8°C). In February, the average high-temperature is essentially the same as in January - a still subzero cold 30.6°F (-0.8°C). Weather in February »

The first month of the spring, March, is a wintry month in Groton, New York, with temperature in the range of an average low of 25°F (-3.9°C) and an average high of 39.7°F (4.3°C). In Groton, New York, the average high-temperature increases, from a subzero cold 30.6°F (-0.8°C) in February, to a wintry 39.7°F (4.3°C). Weather in March »

April in Groton, New York, is a fresh spring month, with temperature in the range of an average low of 35.4°F (1.9°C) and an average high of 52.3°F (11.3°C). In Groton, the average high-temperature in April increases, from a cold 39.7°F (4.3°C) in March, to a cool 52.3°F (11.3°C). Weather in April »

The last month of the spring, May, is a comfortable month in Groton, New York, with average temperature ranging between max 66.2°F (19°C) and min 46°F (7.8°C). In Groton, the average high-temperature in May increases, from a cool 52.3°F (11.3°C) in April, to a comfortable 66.2°F (19°C). Weather in May »

The first month of the summer, June, is a pleasant month in Groton, New York, with average temperature fluctuating between 52.5°F (11.4°C) and 72.7°F (22.6°C). In June, the average high-temperature marginally rises, from a comfortable 66.2°F (19°C) in May, to a pleasant 72.7°F (22.6°C). Weather in June »

July is a moderately hot summer month in Groton, New York, with average temperature varying between 78.4°F (25.8°C) and 58.3°F (14.6°C). The warmest month is July, with an average high-temperature of 78.4°F (25.8°C) and an average low-temperature of 58.3°F (14.6°C). Weather in July »

August, the last month of the summer, in Groton, is also a moderately hot month, with temperature in the range of an average high of 76.5°F (24.7°C) and an average low of 56.7°F (13.7°C). In Groton, New York, the average high-temperature is almost the same as in July - a still moderately hot 76.5°F (24.7°C). Weather in August »

September, the first month of the autumn, in Groton, is also an agreeable month, with average temperature ranging between min 50.9°F (10.5°C) and max 69.6°F (20.9°C). In Groton, the average high-temperature slightly decreases, from a warm 76.5°F (24.7°C) in August, to a pleasant 69.6°F (20.9°C). Weather in September »

October, like September, is another mild autumn month in Groton, New York, with average temperature varying between 42.3°F (5.7°C) and 57°F (13.9°C). In October, the average high-temperature drops, from an agreeable 69.6°F (20.9°C) in September, to a mild 57°F (13.9°C). Weather in October »

The last month of the autumn, November, is another chilly month in Groton, New York, with average temperature ranging between max 43.9°F (6.6°C) and min 31.8°F (-0.1°C). In November, the average high-temperature drops, from a mild 57°F (13.9°C) in October, to a chilly 43.9°F (6.6°C). Weather in November »

The first month of the winter, December, is also a wintry month in Groton, New York, with temperature in the range of an average low of 24.4°F (-4.2°C) and an average high of 33.3°F (0.7°C). In Groton, the average high-temperature decreases, from a frosty 43.9°F (6.6°C) in November, to a cold 33.3°F (0.7°C). Weather in December »

What is the coldest month in Groton?

With an average high-temperature of 27.5°F (-2.5°C) and an average low-temperature of 16.2°F (-8.8°C), January is the coldest month in Groton, New York.

How many days does it rain in Groton?

Throughout the year, in Groton, New York, there are 143 rainfall days, and 21.3" (541mm) of precipitation is accumulated.

What is the driest month in Groton?

The month with the least rainfall in Groton, New York, is January when the rain falls for 5.4 days and typically collects 1.06" (27mm) of precipitation.

When does it snow in Groton?

January through May, October through December are months with snowfall in Groton, New York.

How much does it snow in Groton?

In Groton, New York, during the entire year, snow falls for 68.6 days, and aggregates up to 18.98" (482mm) of snow.

What is the month with the lowest UV index in Groton?

Months with the lowest UV index are January, February and December, with an average maximum UV index of 1.

What is the most humid month in Groton?

With an average relative humidity of 88%, February is the most humid month in Groton, New York.

What is the snowiest month in Groton?

The month with the most snowfall in Groton is February when snow falls for 15.3 days and typically aggregates up to 4.17" (106mm) of snow.

What is the month with the least sunshine in Groton?

With an average of 2.5h of sunshine, February has the least sunshine of the year.

What are the least humid months in Groton?

April and May, with an average relative humidity of 79%, are the least humid months in Groton, New York.

What is the rainiest month in Groton?

The month with the most rainfall is June when the rain falls for 15.7 days and typically aggregates up to 2.44" (62mm) of precipitation.

When it does not snow in Groton?

June through September are months without snowfall in Groton.

When are the longest days in Groton?

The month with the longest days is June, with an average of 15.3h of daylight.

What is the warmest month in Groton?

The warmest month in Groton, New York, is July, with an average high-temperature of 78.4°F (25.8°C) and an average low-temperature of 58.3°F (14.6°C).

What month has the most sunshine in Groton?

The month with the most sunshine in Groton is July, with an average of 10.2h of sunshine.

When is the highest UV index in Groton?

With an average maximum UV index of 6, July is the month with the highest UV index in Groton.

What is the month with the shortest days in Groton?

December has the shortest days of the year, with an average of 9.1h of daylight.
Average pressure - Groton, NY

The month with the highest atmospheric pressure is November (30.1").
The month with the lowest atmospheric pressure is June (29.93").

Average wind speed - Groton, NY

The windiest month (with the highest average wind speed) is January (10mph).
The calmest months (with the lowest average wind speed) are July and August (5.9mph).

Average humidity - Groton, NY
Average rainfall - Groton, NY
Average rainfall days - Groton, NY

Months with the highest number of rainy days are May and July (17.1 days).
The month with the least rainy days is February (5.2 days).

Average snowfall - Groton, NY
Average snowfall days - Groton, NY

The month with the highest number of snowfall days is February (15.3 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine - Groton, NY

The month with the longest days is June (Average daylight: 15.3h).
The month with the shortest days is December (Average daylight: 9.1h).

The month with the most sunshine is July (Average sunshine: 10.2h).
The month with the least sunshine is February (Average sunshine: 2.5h).

Average sunshine days - Groton, NY

The month with the most sunshine days is September (15.9 days).
The month with the least sunshine days is February (9.3 days).

Average visibility - Groton, NY

The month with the highest visibility is April (6mi).
Months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).