July weather forecast
Wilton, CT

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Weather in July

July, the same as June, is a moderately hot summer month in Wilton, Connecticut, with an average temperature fluctuating between 81.7°F (27.6°C) and 67.6°F (19.8°C).

Temperature

July, with its high-temperature average of 81.7°F (27.6°C) and a low-temperature average of 67.6°F (19.8°C), is the warmest month.

Heat index

Throughout July, the heat index is computed to be a tropical 86°F (30°C). If exposure and activity are sustained, they might cause a feeling of weariness, resulting in heat cramps.
When assessing, remember that heat index measurements are for light winds and shaded spots. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are largely significant for babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.

Humidity

In Wilton, the average relative humidity in July is 75%.

Rainfall

In Wilton, in July, during 18.1 rainfall days, 4.09" (104mm) of precipitation is typically accumulated. Throughout the year, there are 170.2 rainfall days, and 38.62" (981mm) of precipitation is accumulated.

Snowfall

In Wilton, Connecticut, snow does not fall in May through October.

Daylight

In Wilton, the average length of the day in July is 14h and 48min.
On the first day of July, sunrise is at 5:25 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 8:11 pm EDT.

Sunshine

With an average of 10.5h 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 of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum daily UV index of 6 during July morphs into the following directions:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Updated: Jul 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the hottest time of year?

Wilton's July weather, with an average high temperature of 81.7°F (27.6°C) and an average low temperature of 67.6°F (19.8°C), tends to be the warmest of the year.

What is the average July temperature?

Wilton in July has an average high-temperature of 81.7°F (27.6°C) and an average low-temperature of 67.6°F (19.8°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines air temperature and relative humidity, in July is computed to be 86°F (30°C).

What is the average humidity in July?

The average relative humidity in July is 75%.

How many days does it rain in July?

In Wilton, during July, the rain falls for 18.1 days and regularly aggregates up to 4.09" (104mm) of precipitation.

When it does not snow?

In Wilton, snow does not fall in May through October.

How many hours of daylight does Wilton have in July?

The average day length in July is 14h and 48min.

When are sunrise and sunset in July?

On the first day of July in Wilton, sunrise is at 5:25 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 8:11 pm EDT.

What month has the most sunshine?

July has the most sunshine of the year, with an average of 10.5h of sunshine.

How long on average sun shines in July?

In Wilton, the average sunshine duration in July is 10.5h.

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.

How high is the UV index in July?

In July, the average daily maximum UV index in Wilton, Connecticut, is 6. A UV Index reading of 6 to 7 represents a high health vulnerability 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
Wilton, CT

Average temperature in July - Wilton, CT
  • Average high temperature in July: 81.7°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (35.1°F).

  • Average low temperature in July: 67.6°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (25°F).

Average pressure in July
Wilton, CT

Average pressure in July - Wilton, CT
  • Average pressure in July: 29.96"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
Wilton, CT

Average wind speed in July - Wilton, CT
  • Average wind speed in July: 6.1mph

The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).

Average humidity in July
Wilton, CT

Average humidity in July - Wilton, CT
  • Average humidity in July: 75%

The months with the highest relative humidity are February, May, June, October and December (76%).
The month with the lowest relative humidity is April (72%).

Average rainfall in July
Wilton, CT

Average rainfall in July - Wilton, CT
  • Average rainfall in July: 4.09"

The wettest month (with the highest rainfall) is December (4.17").
The driest month (with the least rainfall) is January (2.44").

Average rainfall days in July
Wilton, CT

Average rainfall days in July - Wilton, CT
  • Average rainfall days in July: 18.1 days

The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is January (8.6 days).

Average snowfall in July
Wilton, CT

Average snowfall in July - Wilton, CT
  • Average snowfall in July: 0"

The month with the highest snowfall is February (3.46").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in July
Wilton, CT

Average snowfall days in July - Wilton, CT
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is February (8.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in July /
Average sunshine in July
Wilton, CT

Average daylight in July / Average sunshine in July - Wilton, CT
  • 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 3min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in July
Wilton, CT

Average sunshine days in July - Wilton, CT
  • Average sunshine days in July: 10.9 days

The month with the most sunshine days is January (17.3 days).
The month with the least sunshine days is June (10.1 days).

Average UV index in July
Wilton, CT

Average UV index in July - Wilton, CT
  • 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, November and December (UV index 2).

Average cloud cover in July
Wilton, CT

Average cloud cover in July - Wilton, CT
  • Average cloud cover in July: 32

The months with the most cloud cover are February, March and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in July
Wilton, CT

Average visibility in July - Wilton, CT
  • 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).

Wilton, Connecticut, USA

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