July weather forecast
Grand Isle, VT

Weather in July

July in Grand Isle, Vermont, is a moderately hot summer month, with an average temperature varying between 77.5°F (25.3°C) and 59.4°F (15.2°C).

Temperature

With an average high-temperature of 77.5°F (25.3°C) and an average low-temperature of 59.4°F (15.2°C), July is the warmest month.

Humidity

In July, the average relative humidity in Grand Isle is 78%.

Rainfall

In July, in Grand Isle, the rain falls for 18.5 days. Throughout July, 2.76" (70mm) of precipitation is accumulated. Throughout the year, there are 176.9 rainfall days, and 29.88" (759mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall in Grand Isle.

Daylight

In Grand Isle, the average length of the day in July is 15h and 10min.
On the first day of the month, sunrise is at 5:11 am and sunset at 8:42 pm. On the last day of July, in Grand Isle, sunrise is at 5:38 am and sunset at 8:20 pm EDT.

Sunshine

In July, the average sunshine is 10.4h.

UV index

The months with the highest UV index in Grand Isle are May through August, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 5 in July interpret into the following advice:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the warmest month in Grand Isle?

With an average high-temperature of 77.5°F (25.3°C) and an average low-temperature of 59.4°F (15.2°C), July is the warmest month in Grand Isle, Vermont.

What is the temperature in July in Grand Isle?

The average high-temperature, in July, in Grand Isle, Vermont, is 77.5°F (25.3°C), while the average low-temperature is 59.4°F (15.2°C).

What is the average humidity in July in Grand Isle?

In July, the average relative humidity in Grand Isle, Vermont, is 78%.

How much does it rain in Grand Isle in July?

In Grand Isle, Vermont, in July, during 18.5 rainfall days, 2.76" (70mm) of precipitation is typically accumulated.

When it does not snow in Grand Isle?

June through September are months without snowfall in Grand Isle, Vermont.

What is the average length of the day in July in Grand Isle?

The average day length in July in Grand Isle is 15h and 10min.

When are sunrise and sunset in July in Grand Isle?

In July, on the first day of the month, sunrise is at 5:11 am and sunset at 8:42 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 8:20 pm EDT.

How many hours of sunshine does Grand Isle have in July?

The average sunshine duration in July in Grand Isle, Vermont, is 10.4h.

What are the months with the highest UV index in Grand Isle?

The months with the highest UV index in Grand Isle, Vermont, are May through August, with an average maximum UV index of 5.

How high is the UV index in July in Grand Isle?

In Grand Isle, the average daily maximum UV index in July is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from unsafe exposure to Sun's UV rays.
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 July
Grand Isle, VT

Average temperature in July - Grand Isle, VT
  • Average high temperature in July: 77.5°F

The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (24.3°F).

  • Average low temperature in July: 59.4°F

The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (12°F).

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Average pressure in July
Grand Isle, VT

Average pressure in July - Grand Isle, VT
  • Average pressure in July: 29.93"Hg

The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in July
Grand Isle, VT

Average wind speed in July - Grand Isle, VT
  • Average wind speed in July: 6.1mph

The windiest month (with the highest average wind speed) is April (8mph).
The calmest months (with the lowest average wind speed) are July and August (6.1mph).

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Average humidity in July
Grand Isle, VT

Average humidity in July - Grand Isle, VT
  • Average humidity in July: 78%

The months with the highest relative humidity are January and February (87%).
The months with the lowest relative humidity are April and May (76%).

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Average rainfall in July
Grand Isle, VT

Average rainfall in July - Grand Isle, VT
  • Average rainfall in July: 2.76"

The wettest month (with the highest rainfall) is June (3.23").
The driest month (with the least rainfall) is September (1.81").

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Average rainfall days in July
Grand Isle, VT

Average rainfall days in July - Grand Isle, VT
  • Average rainfall days in July: 18.5 days

The month with the highest number of rainy days is June (18.8 days).
The month with the least rainy days is January (9.4 days).

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Average snowfall in July
Grand Isle, VT

Average snowfall in July - Grand Isle, VT
  • Average snowfall in July: 0"

The month with the highest snowfall is February (9.49").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in July
Grand Isle, VT

Average snowfall days in July - Grand Isle, VT
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (19.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in July /
Average sunshine in July
Grand Isle, VT

Average daylight in July / Average sunshine in July - Grand Isle, VT
  • Average daylight in July: 15h and 1min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in July: 10h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 24min).

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Average sunshine days in July
Grand Isle, VT

Average sunshine days in July - Grand Isle, VT
  • Average sunshine days in July: 9.3 days

The month with the most sunshine days is September (15.3 days).
The month with the least sunshine days is February (6.5 days).

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Average UV index in July
Grand Isle, VT

Average UV index in July - Grand Isle, VT
  • Average UV index in July: 5

The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in July
Grand Isle, VT

Average cloud cover in July - Grand Isle, VT
  • Average cloud cover in July: 32

The month with the most cloud cover is February (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 31).

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Average visibility in July
Grand Isle, VT

Average visibility in July - Grand Isle, VT
  • Average visibility in July: 6mi

The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January and February (4mi).

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