July weather forecast
Grand Isle, VT

englishespañol中文
Share

Weather in July

July is the peak of summer in Grand Isle, with temperatures reaching up to 77.5°F (25.3°C), the warmest of all the months. It showcases the town's sunniest weather, with a maximum UV index of 5 allowing for sunshine-filled days. The days are longer, offering plenty of daylight hours for outdoor recreational activities. The lakes offer excellent boating and fishing experiences, and the trails are perfect for hikers and nature lovers.

Temperature

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

Humidity

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

Rainfall

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

Snowfall

In Grand Isle, snow does not fall in June through September.

Daylight

The average length of the day in July in Grand Isle, Vermont, 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, Vermont, sunrise is at 5:39 am and sunset at 8:19 pm EDT.

Sunshine

In Grand Isle, the average sunshine in July 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 estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.
Note: A maximum daily UV index of 5 during July morphs into the following directions:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Minimize direct exposure to the Sun during midday when its radiation is at its peak. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Updated: Feb 14, 2024 | Published by: Weather Atlas | About Us

Frequently asked questions

What time of the year is the hottest in Grand Isle?

In Grand Isle, temperatures reach their average annual highs in July, measuring 77.5°F (25.3°C) and a minimum average of 59.4°F (15.2°C).

What is the average July temperature in Grand Isle?

The average high-temperature and low-temperature during July are 77.5°F (25.3°C) and 59.4°F (15.2°C) respectively.

What is the average humidity in July in Grand Isle?

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

How many days does it rain in July in Grand Isle?

In Grand Isle, during July, the rain falls for 18.5 days and regularly aggregates up to 2.76" (70mm) of precipitation.

When it does not snow in Grand Isle?

June through September are months without snowfall.

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

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

What time 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, in Grand Isle, Vermont, sunrise is at 5:39 am and sunset at 8:19 pm EDT.

How long on average sun shines in July in Grand Isle?

The average sunshine duration in July is 10.4h.

What is the month with the highest UV index in Grand Isle?

May through August, with an average maximum UV index of 5, are months with the highest UV index.

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

The average daily maximum UV index in July in Grand Isle, Vermont, is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's 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 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).

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).

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).

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%).

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").

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).

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").

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).

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).

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).

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).

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).

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).

Grand Isle, Vermont, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location