July weather forecast
Smithtown, NY

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Weather in July

July is a warm summer month in Smithtown, New York, with an average temperature varying between 71.2°F (21.8°C) and 79.3°F (26.3°C).

Temperature

Smithtown records the warmest temperatures in July, averaging a high of 79.3°F (26.3°C) and a low of 71.2°F (21.8°C).

Humidity

The average relative humidity in July is 75%.

Rainfall

July is the month with the most rainfall. Rain falls for 17.4 days and accumulates 3.94" (100mm) of precipitation.

Snowfall

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

Daylight

In Smithtown, the average length of the day in July is 14h and 46min.
On the first day of July, sunrise is at 5:25 am and sunset at 8:28 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 8:09 pm EDT.

Sunshine

With an average of 10.8h of sunshine, July has the most sunshine of the year.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index of 6 during July translates into these guidelines:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Updated: Jul 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the hottest?

Smithtown's temperature records reveal July as the warmest month, marked by average highs of 79.3°F (26.3°C) and lows of 71.2°F (21.8°C).

What is the usual temperature for Smithtown in July?

In July, in Smithtown, the average high-temperature is 79.3°F (26.3°C), and the average low-temperature is 71.2°F (21.8°C).

What is the average humidity in July?

In July, the average relative humidity is 75%.

What is the rainiest month?

The month with the most rainfall is July, when the rain falls for 17.4 days and typically aggregates up to 3.94" (100mm) of precipitation.

How much does it rain in Smithtown in July?

In July, the rain falls for 17.4 days. Throughout July, 3.94" (100mm) of precipitation is accumulated.

When it does not snow?

April through October are months without snowfall.

How many hours of daylight does Smithtown have in July?

The average day length in July is 14h and 46min.

What time are sunrise and sunset in July?

On the first day of July, sunrise is at 5:25 am and sunset at 8:28 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 8:09 pm EDT.

What month has the most sunshine in Smithtown?

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

How long on average sun shines in July?

The average sunshine duration in July is 10.8h.

When is the highest UV index?

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

What is the UV index intensity in July in Smithtown?

The average daily maximum UV index in July is 6. A UV Index value of 6 to 7 symbolizes a high health threat from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
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 July
Smithtown, NY

Average temperature in July - Smithtown, NY
  • Average high temperature in July: 79.3°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 July: 71.2°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).

Average pressure in July
Smithtown, NY

Average pressure in July - Smithtown, NY
  • Average pressure in July: 29.95"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).

Average wind speed in July
Smithtown, NY

Average wind speed in July - Smithtown, NY
  • Average wind speed in July: 8.3mph

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).

Average humidity in July
Smithtown, NY

Average humidity in July - Smithtown, NY
  • Average humidity in July: 75%

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

Average rainfall in July
Smithtown, NY

Average rainfall in July - Smithtown, NY
  • Average rainfall in July: 3.94"

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

Average rainfall days in July
Smithtown, NY

Average rainfall days in July - Smithtown, NY
  • Average rainfall days in July: 17.4 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).

Average snowfall in July
Smithtown, NY

Average snowfall in July - Smithtown, NY
  • Average snowfall in July: 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").

Average snowfall days in July
Smithtown, NY

Average snowfall days in July - Smithtown, NY
  • Average snowfall days in July: 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).

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

Average daylight in July / Average sunshine in July - Smithtown, NY
  • Average daylight in July: 14h 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 July: 10h and 5min

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).

Average sunshine days in July
Smithtown, NY

Average sunshine days in July - Smithtown, NY
  • Average sunshine days in July: 11.4 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).

Average UV index in July
Smithtown, NY

Average UV index in July - Smithtown, NY
  • Average UV index in July: 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).

Average cloud cover in July
Smithtown, NY

Average cloud cover in July - Smithtown, NY
  • Average cloud cover in July: 29

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

Average visibility in July
Smithtown, NY

Average visibility in July - Smithtown, NY
  • Average visibility in July: 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).

Smithtown, New York, USA

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