August weather forecast
Smithtown, NY

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Weather in August

August, the last month of the summer in Smithtown, is another warm month, with temperature in the range of an average low of 71.6°F (22°C) and an average high of 78.6°F (25.9°C).

Temperature

The average high-temperature for August is a still warm 78.6°F (25.9°C), closely aligning with the temperature of the preceding month. Nighttime temperatures record an average of 71.6°F (22°C) throughout August.

Humidity

The average relative humidity in August is 72%.

Rainfall

In Smithtown, during August, the rain falls for 16.3 days and regularly aggregates up to 3.46" (88mm) of precipitation. Throughout the year, in Smithtown, there are 155.9 rainfall days, and 35.94" (913mm) of precipitation is accumulated.

Snowfall

In Smithtown, snow does not fall in April through October.

Daylight

The average length of the day in August in Smithtown is 13h and 45min.
On the first day of August in Smithtown, sunrise is at 5:49 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 6:19 am and sunset at 7:26 pm EDT.

Sunshine

The average sunshine in August in Smithtown is 10.7h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index, 6 during August, leads to the following recommendations:
Shun overexposure. Protection from sun ravages is indispensable. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
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Frequently asked questions

What is the temperature in August in Smithtown?

August temperatures vary between a high-temperature of 78.6°F (25.9°C) and a low-temperature of 71.6°F (22°C).

What is the average humidity in August in Smithtown?

The average relative humidity in August is 72%.

How much does it rain in Smithtown in August?

In August, in Smithtown, New York, the rain falls for 16.3 days. Throughout August, 3.46" (88mm) of precipitation is accumulated.

When it does not snow in Smithtown?

In Smithtown, New York, snow does not fall in April through October.

How many hours of daylight does Smithtown have in August?

The average day length in August is 13h and 45min.

When are sunrise and sunset in August in Smithtown?

In August, on the first day of the month, sunrise is at 5:49 am and sunset at 8:08 pm. On the last day of the month, in Smithtown, New York, sunrise is at 6:19 am and sunset at 7:26 pm EDT.

How many hours of sunshine does Smithtown have in August?

The average sunshine duration in August in Smithtown, New York, is 10.7h.

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

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

How high is the UV index in August in Smithtown?

The average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Smithtown, NY

Average temperature in August - Smithtown, NY
  • Average high temperature in August: 78.6°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (37.6°F).

  • Average low temperature in August: 71.6°F

The month with the highest average low temperature is August (71.6°F).
The coldest month (with the lowest average low temperature) is January (28.9°F).

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Average pressure in August
Smithtown, NY

Average pressure in August - Smithtown, NY
  • Average pressure in August: 29.98"Hg

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 in August
Smithtown, NY

Average wind speed in August - Smithtown, NY
  • Average wind speed in August: 8.4mph

The windiest month (with the highest average wind speed) is January (12.8mph).
The calmest month (with the lowest average wind speed) is July (8.3mph).

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Average humidity in August
Smithtown, NY

Average humidity in August - Smithtown, NY
  • Average humidity in August: 72%

The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is November (71%).

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Average rainfall in August
Smithtown, NY

Average rainfall in August - Smithtown, NY
  • Average rainfall in August: 3.46"

The wettest month (with the highest rainfall) is July (3.94").
The driest month (with the least rainfall) is January (2.2").

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Average rainfall days in August
Smithtown, NY

Average rainfall days in August - Smithtown, NY
  • Average rainfall days in August: 16.3 days

The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is January (7.8 days).

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Average snowfall in August
Smithtown, NY

Average snowfall in August - Smithtown, NY
  • Average snowfall in August: 0"

The month with the highest snowfall is March (1.85").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in August
Smithtown, NY

Average snowfall days in August - Smithtown, NY
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (4.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in August /
Average sunshine in August
Smithtown, NY

Average daylight in August / Average sunshine in August - Smithtown, NY
  • Average daylight in August: 13h and 5min

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).

  • Average sunshine in August: 10h and 4min

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 in August
Smithtown, NY

Average sunshine days in August - Smithtown, NY
  • Average sunshine days in August: 12.3 days

The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is July (11.4 days).

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Average UV index in August
Smithtown, NY

Average UV index in August - Smithtown, NY
  • Average UV index in August: 6

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 cloud cover in August
Smithtown, NY

Average cloud cover in August - Smithtown, NY
  • Average cloud cover in August: 28

The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 28).

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Average visibility in August
Smithtown, NY

Average visibility in August - Smithtown, NY
  • Average visibility in August: 6mi

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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Smithtown, New York, USA

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