Holtsville
New York, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Holtsville, NY

January, like December, in Holtsville, New York, is a wintry winter month, with average temperature ranging between min 30.2°F (-1°C) and max 37.9°F (3.3°C). The coldest month is January, with an average high-temperature of 37.9°F (3.3°C) and an average low-temperature of 30.2°F (-1°C). Weather in January »

February, the last month of the winter, in Holtsville, is also a wintry month, with temperature in the range of an average high of 39.7°F (4.3°C) and an average low of 31.3°F (-0.4°C). In February, the average high-temperature is almost 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 Holtsville, is a frosty month, with temperature in the range of an average high of 44.2°F (6.8°C) and an average low of 36.3°F (2.4°C). In Holtsville, the average high-temperature in March is relatively the same as in February - a chilly 44.2°F (6.8°C). Weather in March »

April in Holtsville, New York, is a fresh spring month, with average temperature varying between 52.3°F (11.3°C) and 45.1°F (7.3°C). In Holtsville, the average high-temperature in April marginally rises, from a chilly 44.2°F (6.8°C) in March, to a fresh 52.3°F (11.3°C). Weather in April »

May, the last month of the spring, in Holtsville, is a comfortable month, with average temperature fluctuating between 61.2°F (16.2°C) and 54.3°F (12.4°C). In Holtsville, the average high-temperature marginally rises, from a fresh 52.3°F (11.3°C) in April, to an enjoyable 61.2°F (16.2°C). Weather in May »

The first month of the summer, June, is a pleasant month in Holtsville, New York, with average temperature ranging between min 63.5°F (17.5°C) and max 70.7°F (21.5°C). In Holtsville, the average high-temperature rises, from an enjoyable 61.2°F (16.2°C) in May, to an agreeable 70.7°F (21.5°C). Weather in June »

July is a warm summer month in Holtsville, New York, with average temperature fluctuating between 77.9°F (25.5°C) and 71.6°F (22°C). In July, the average high-temperature slightly increases, from a pleasant 70.7°F (21.5°C) in June, to a warm 77.9°F (25.5°C). Weather in July »

August, the last month of the summer, in Holtsville, is another warm month, with average temperature ranging between max 78.1°F (25.6°C) and min 71.8°F (22.1°C). With an average high-temperature of 78.1°F (25.6°C) and an average low-temperature of 71.8°F (22.1°C), August is the warmest month. Weather in August »

September, the first month of the autumn, in Holtsville, is still a pleasant month, 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 moderately hot 78.1°F (25.6°C) in August, to an agreeable 72.1°F (22.3°C). Weather in September »

October, the same as September, is another comfortable autumn month in Holtsville, New York, with temperature in the range of an average low of 55.8°F (13.2°C) and an average high of 62.4°F (16.9°C). In Holtsville, the average high-temperature drops, from a pleasant 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 Holtsville, New York, with temperature in the range of an average high of 52.3°F (11.3°C) and an average low of 45°F (7.2°C). In November, the average high-temperature drops, from a comfortable 62.4°F (16.9°C) in October, to a fresh 52.3°F (11.3°C). Weather in November »

December, the first month of the winter, in Holtsville, is also a frosty month, with average temperature ranging between max 44.1°F (6.7°C) and min 37.2°F (2.9°C). In Holtsville, New York, the average high-temperature slightly decreases, from a cool 52.3°F (11.3°C) in November, to a chilly 44.1°F (6.7°C). Weather in December »

What is the coldest month in Holtsville?

January is the coldest month in Holtsville, with an average high-temperature of 37.9°F (3.3°C) and an average low-temperature of 30.2°F (-1°C).

How much does it rain in Holtsville?

In Holtsville, during the entire year, the rain falls for 155.3 days and collects up to 34.84" (885mm) of precipitation.

What is the driest month in Holtsville?

January is the month with the least rainfall in Holtsville. Rain falls for 8.3 days and accumulates 2.17" (55mm) of precipitation.

When does it snow in Holtsville?

Months with snowfall in Holtsville, New York, are January through March, May, October and December.

How many days does it snow in Holtsville?

Throughout the year, in Holtsville, there are 14.7 snowfall days, and 6.14" (156mm) of snow is accumulated.

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

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

What is the month with the least sunshine in Holtsville?

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

When does it snow the most in Holtsville?

The month with the most snowfall is March when snow falls for 2.5 days and typically aggregates up to 2.13" (54mm) of snow.

When it does not snow in Holtsville?

In Holtsville, New York, snow does not fall in April, June through September and November.

What is the most humid month in Holtsville?

Months with the highest humidity in Holtsville are May and June, with an average relative humidity of 78%.

When are the longest days in Holtsville?

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

What is the month with the highest UV index in Holtsville?

June through August, with an average maximum UV index of 6, are months with the highest UV index in Holtsville.

What month has the most sunshine in Holtsville?

The month with the most sunshine is July, with an average of 10.8h of sunshine.

What is the warmest month in Holtsville?

With an average high-temperature of 78.1°F (25.6°C) and an average low-temperature of 71.8°F (22.1°C), August is the warmest month in Holtsville, New York.

What is the least humid month in Holtsville?

With an average relative humidity of 71%, November is the least humid month.

What is the wettest month in Holtsville?

The month with the most rainfall in Holtsville is December when the rain falls for 12.3 days and typically aggregates up to 3.74" (95mm) of precipitation.

What is the month with the shortest days in Holtsville?

With an average of 9.3h of daylight, December has the shortest days of the year.
Average temperature - Holtsville, NY
Average humidity - Holtsville, NY
Average rainfall - Holtsville, NY

The wettest month (with the highest rainfall) is December (3.74").
The driest month (with the least rainfall) is January (2.17").

Average rainfall days - Holtsville, NY

The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is January (8.3 days).

Average snowfall - Holtsville, NY

The month with the highest snowfall is March (2.13").
Months with the least snowfall are April, June, July, August, September and November (0").

Average snowfall days - Holtsville, NY

The month with the highest number of snowfall days is February (4.6 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine - Holtsville, 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 UV index - Holtsville, NY