Monthly weather forecast and climate
Islip Terrace, NY

January, the same as December, is another cold winter month in Islip Terrace, New York, with temperature in the range of an average low of 30°F (-1.1°C) and an average high of 37.9°F (3.3°C). With an average high-temperature of 37.9°F (3.3°C) and an average low-temperature of 30°F (-1.1°C), January is the coldest month. Weather in January »

February, the last month of the winter, in Islip Terrace, is another cold month, with average temperature ranging between min 31.1°F (-0.5°C) and max 39.7°F (4.3°C). In Islip Terrace, the average high-temperature in February is essentially the same as in January - a still cold 39.7°F (4.3°C). Weather in February »

March, the first month of the spring, in Islip Terrace, is a frosty month, with average temperature varying between 44.2°F (6.8°C) and 36.1°F (2.3°C). In March, the average high-temperature is almost the same as in February - a chilly 44.2°F (6.8°C). Weather in March »

April in Islip Terrace, New York, is a cool spring month, with average temperature varying between 45.1°F (7.3°C) and 52.9°F (11.6°C). In April, the average high-temperature marginally rises, from a frosty 44.2°F (6.8°C) in March, to a fresh 52.9°F (11.6°C). Weather in April »

The last month of the spring, May, is a comfortable month in Islip Terrace, New York, with average temperature varying between 54.5°F (12.5°C) and 62.2°F (16.8°C). In May, the average high-temperature increases, from a fresh 52.9°F (11.6°C) in April, to an enjoyable 62.2°F (16.8°C). Weather in May »

June, the first month of the summer, in Islip Terrace, is a pleasant month, with average temperature ranging between max 71.4°F (21.9°C) and min 63.9°F (17.7°C). In June, the average high-temperature rises, from an enjoyable 62.2°F (16.8°C) in May, to an agreeable 71.4°F (21.9°C). Weather in June »

July in Islip Terrace, New York, is a moderately hot summer month, with temperature in the range of an average low of 71.8°F (22.1°C) and an average high of 79°F (26.1°C). July is the warmest month, with an average high-temperature of 79°F (26.1°C) and an average low-temperature of 71.8°F (22.1°C). Weather in July »

August, the last month of the summer, in Islip Terrace, is also a moderately hot month, with temperature in the range of an average low of 72°F (22.2°C) and an average high of 78.4°F (25.8°C). In August, the average high-temperature is practically the same as in July - a still moderately hot 78.4°F (25.8°C). Weather in August »

The first month of the autumn, September, is still a pleasant month in Islip Terrace, New York, with average temperature varying between 72.1°F (22.3°C) and 65.3°F (18.5°C). In September, the average high-temperature slightly decreases, from a warm 78.4°F (25.8°C) in August, to a pleasant 72.1°F (22.3°C). Weather in September »

October, the same as September, is another enjoyable autumn month in Islip Terrace, New York, with average temperature fluctuating between 62.4°F (16.9°C) and 55.8°F (13.2°C). In Islip Terrace, the average high-temperature in October drops, from an agreeable 72.1°F (22.3°C) in September, to an enjoyable 62.4°F (16.9°C). Weather in October »

The last month of the autumn, November, is another cool month in Islip Terrace, New York, with average temperature ranging between max 52°F (11.1°C) and min 44.2°F (6.8°C). In November, the average high-temperature drops, from an enjoyable 62.4°F (16.9°C) in October, to a fresh 52°F (11.1°C). Weather in November »

December, the first month of the winter, in Islip Terrace, is still a chilly month, with average temperature varying between 36.9°F (2.7°C) and 43.9°F (6.6°C). In December, the average high-temperature slightly decreases, from a cool 52°F (11.1°C) in November, to a chilly 43.9°F (6.6°C). Weather in December »

What is the coldest month in Islip Terrace?

January is the coldest month in Islip Terrace, with an average high-temperature of 37.9°F (3.3°C) and an average low-temperature of 30°F (-1.1°C).

How many days does it rain in Islip Terrace?

In Islip Terrace, during the entire year, the rain falls for 153.2 days and collects up to 34.45" (875mm) of precipitation.

What is the driest month in Islip Terrace?

The month with the least rainfall is January when the rain falls for 7.6 days and typically collects 2.05" (52mm) of precipitation.

When does it snow in Islip Terrace?

January through March, October through December are months with snowfall in Islip Terrace.

How much does it snow in Islip Terrace?

Throughout the year, there are 13 snowfall days, and 5.87" (149mm) of snow is accumulated.

What is the month with the lowest UV index in Islip Terrace?

January through March and December, with an average maximum UV index of 2, are months with the lowest UV index in Islip Terrace, New York.

What is the month with the least sunshine in Islip Terrace?

The month with the least sunshine is February, with an average of 4.8h of sunshine.

What is the snowiest month in Islip Terrace?

The month with the most snowfall in Islip Terrace, New York, is March when snow falls for 2.6 days and typically aggregates up to 1.97" (50mm) of snow.

When it does not snow in Islip Terrace?

In Islip Terrace snow does not fall in April through September.

What is the most humid month in Islip Terrace?

May and June, with an average relative humidity of 77%, are most humid months.

When are the longest days in Islip Terrace?

The month with the longest days in Islip Terrace is June, with an average of 15.1h of daylight.

What is the month with the highest UV index in Islip Terrace?

June through August, with an average maximum UV index of 6, are months with the highest UV index in Islip Terrace, New York.

What is the warmest month in Islip Terrace?

With an average high-temperature of 79°F (26.1°C) and an average low-temperature of 71.8°F (22.1°C), July is the warmest month in Islip Terrace, New York.

What is the wettest month in Islip Terrace?

July is the month with the most rainfall. Rain falls for 17.9 days and accumulates 3.86" (98mm) of precipitation.

What month has the most sunshine in Islip Terrace?

With an average of 10.8h of sunshine, July has the most sunshine of the year in Islip Terrace, New York.

What is the least humid month in Islip Terrace?

The least humid month is November, with an average relative humidity of 71%.

What is the month with the shortest days in Islip Terrace?

December has the shortest days of the year in Islip Terrace, with an average of 9.3h of daylight.
Average temperature - Islip Terrace, NY
Average pressure - Islip Terrace, NY

The month with the highest atmospheric pressure is November (30.09").
The month with the lowest atmospheric pressure is June (29.93").

Average wind speed - Islip Terrace, NY

The windiest month (with the highest average wind speed) is January (13.4mph).
The calmest month (with the lowest average wind speed) is July (8.6mph).

Average humidity - Islip Terrace, NY
Average rainfall - Islip Terrace, NY
Average rainfall days - Islip Terrace, NY

The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is January (7.6 days).

Average snowfall - Islip Terrace, NY
Average snowfall days - Islip Terrace, NY

The month with the highest number of snowfall days is February (4.2 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight / Average sunshine - Islip Terrace, NY

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

The month with the most sunshine is July (Average sunshine: 10.8h).
The month with the least sunshine is February (Average sunshine: 4.8h).

Average sunshine days - Islip Terrace, NY

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (11.2 days).

Average UV index - Islip Terrace, NY
Average visibility - Islip Terrace, NY

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