Climate and monthly weather forecast
Holtsville, NY

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Weather in January

January, like December, in Holtsville, New York, is another cold winter month, with an average temperature varying between 30.2°F (-1°C) and 37.9°F (3.3°C). January, marked by an average high-temperature of 37.9°F (3.3°C) and a low-temperature of 30.2°F (-1°C), is the coldest month. Weather in January »

Weather in February

The last month of the winter, February, is also a wintry month in Holtsville, New York, with an average temperature varying between 31.3°F (-0.4°C) and 39.7°F (4.3°C). Holtsville registers an average high-temperature of a still icy 39.7°F (4.3°C) with the arrival of February, showing minor deviation from the preceding month. Weather in February »

Weather in March

March, the first month of the spring in Holtsville, is a chilly month, with an average temperature ranging between max 44.2°F (6.8°C) and min 36.3°F (2.4°C). Transitioning into March, Holtsville experiences an average high-temperature of a frosty 44.2°F (6.8°C), marking a minor shift from the preceding month. Weather in March »

Weather in April

April is a fresh spring month in Holtsville, New York, with an average temperature varying between 45.1°F (7.3°C) and 52.3°F (11.3°C). Holtsville's April weather indicates a minor ascent in high-temperatures, adjusting from a chilly 44.2°F (6.8°C) in March to a cool 52.3°F (11.3°C). Weather in April »

Weather in May

May, the last month of the spring in Holtsville, is a comfortable month, with an average temperature varying between 61.2°F (16.2°C) and 54.3°F (12.4°C). In Holtsville, stepping into May brings a gentle temperature nudge, moving slightly up from April's fresh 52.3°F (11.3°C) to a refreshing 61.2°F (16.2°C). Weather in May »

Weather in June

June, the first month of the summer in Holtsville, is an agreeable month, with an average temperature ranging between max 70.7°F (21.5°C) and min 63.5°F (17.5°C). The shift into June is marked by a rise in the average high-temperature, moving from May's enjoyable 61.2°F (16.2°C) to an agreeable 70.7°F (21.5°C). Weather in June »

Weather in July

July is a warm summer month in Holtsville, New York, with an average temperature ranging between max 77.9°F (25.5°C) and min 71.6°F (22°C). The arrival of July signals a slight increase in the average high-temperature, moving from an agreeable 70.7°F (21.5°C) in June to a warm 77.9°F (25.5°C). Weather in July »

Weather in August

August, the last month of the summer in Holtsville, is another warm month, with an average temperature fluctuating between 78.1°F (25.6°C) and 71.8°F (22.1°C). In Holtsville, the peak temperatures are generally noted in August, averaging a high of 78.1°F (25.6°C) and a low of 71.8°F (22.1°C). Weather in August »

Weather in September

September, the first month of the autumn in Holtsville, is also an agreeable month, with temperature in the range of an average high of 72.1°F (22.3°C) and an average low of 65.3°F (18.5°C). The move into September indicates a slight reduction in the average high-temperature, down from August's warm 78.1°F (25.6°C) to a pleasant 72.1°F (22.3°C). Weather in September »

Weather in October

October, the same as September, is another enjoyable autumn month in Holtsville, New York, with an average temperature ranging between min 55.8°F (13.2°C) and max 62.4°F (16.9°C). The beginning of October marks a decrease in the average high-temperature, transitioning from an agreeable 72.1°F (22.3°C) in September to a refreshing 62.4°F (16.9°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a fresh month in Holtsville, New York, with temperature in the range of an average low of 45°F (7.2°C) and an average high of 52.3°F (11.3°C). A shift in Holtsville's weather is observed as October turns into November, with the average high temperature reducing from an enjoyable 62.4°F (16.9°C) to a cool 52.3°F (11.3°C). Weather in November »

Weather in December

December, the first month of the winter in Holtsville, is still a chilly month, with an average temperature ranging between max 44.1°F (6.7°C) and min 37.2°F (2.9°C). December's arrival aligns with a minor decrease in average high-temperatures, from November's cool 52.3°F (11.3°C) to a chilly 44.1°F (6.7°C). Weather in December »
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Frequently asked questions

What is the coldest month in Holtsville?

January is the coldest month, exhibiting average temperatures of 37.9°F (3.3°C) at the peak and 30.2°F (-1°C) at the base.

What is the driest month in Holtsville?

The month with the least rainfall is January, when the rain falls for 8.3 days and typically collects 2.17" (55mm) of precipitation.

How much does it rain in Holtsville?

Throughout the year, there are 155.3 rainfall days, and 34.84" (885mm) of precipitation is accumulated.

When does it snow in Holtsville?

Months with snowfall are January through March, May, October and December.

How many days does it snow in Holtsville?

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

When is the lowest UV index in Holtsville?

The months with the lowest UV index are January through March and December, with an average maximum UV index of 2.

What is the month with the least sunshine in Holtsville?

With an average of 4.8h of sunshine, February has the least sunshine of the year in Holtsville, New York.

When does it snow the most in Holtsville?

March is the month with the most snowfall in Holtsville. Snow falls for 2.5 days and accumulates 2.13" (54mm) of snow.

When is Daylight Saving Time (DST) in Holtsville?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Holtsville, New York, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.

When it does not snow in Holtsville?

April, June through September and November are months without snowfall in Holtsville, New York.

What are the most humid months in Holtsville?

May and June, with an average relative humidity of 78%, are most humid months.

When are the longest days in Holtsville?

With an average of 15h and 6min of daylight, June has the longest days of the year.

What are the months 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, New York.

What month has the most sunshine in Holtsville?

The month with the most sunshine in Holtsville, New York, is July, with an average of 10.8h of sunshine.

What is the warmest month in Holtsville?

August, noted for its average high-temperature of 78.1°F (25.6°C) and an average low-temperature of 71.8°F (22.1°C), is considered the warmest month.

What is the least humid month in Holtsville?

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

What is the rainiest month in Holtsville?

December is the month with the most rainfall. Rain falls for 12.3 days and accumulates 3.74" (95mm) of precipitation.

What is the month with the shortest days in Holtsville?

The month with the shortest days is December, with an average of 9h and 18min of daylight.

Average temperature
Holtsville, NY

Average temperature - Holtsville, NY

The warmest month (with the highest average high temperature) is August (78.1°F).
The month with the lowest average high temperature is January (37.9°F).

The month with the highest average low temperature is August (71.8°F).
The coldest month (with the lowest average low temperature) is January (30.2°F).

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Average pressure
Holtsville, NY

Average pressure - Holtsville, NY

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

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Average wind speed
Holtsville, NY

Average wind speed - Holtsville, NY

The windiest month (with the highest average wind speed) is January (13.8mph).
The calmest months (with the lowest average wind speed) are July and August (9mph).

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Average humidity
Holtsville, NY

Average humidity - Holtsville, NY

The months with the highest relative humidity are May and June (78%).
The month with the lowest relative humidity is November (71%).

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Average rainfall
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").

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Average rainfall days
Holtsville, NY

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).

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Average snowfall
Holtsville, NY

Average snowfall - Holtsville, NY

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

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Average snowfall days
Holtsville, NY

Average snowfall days - Holtsville, NY

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

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Average daylight / Average sunshine
Holtsville, NY

Average daylight / Average sunshine - Holtsville, NY

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

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Average sunshine days
Holtsville, NY

Average sunshine days - Holtsville, NY

The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is July (11.3 days).

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Average UV index
Holtsville, NY

Average UV index - Holtsville, NY

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 and December (UV index 2).

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Average visibility
Holtsville, NY

Average visibility - Holtsville, NY

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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Holtsville, New York, USA

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