July weather forecast
Clayton, DE

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Weather in July

July recognized as the pinnacle of summer, sees the highest temperatures, peaking at 84.4°F (29.1°C), and the lowest winds speeds of just 6.1mph (9.8km/h). This underlines the truly calmer nature of the weather in Clayton, Delaware during this month. The increased daylight and UV index result in more vibrant and heated days. Its stark contrast to the cooler tones of the preceding months is evident. Despite its peak temperatures, July does see increased rainfall compared to June, making it a season of contrasts.

Temperature

July, recognised by an average high temperature of 84.4°F (29.1°C) and a low of 69.3°F (20.7°C), is Clayton's warmest month.

Heat index

The heat index for July is appraised at a hot 93.2°F (34°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Always consider that heat index estimations are for light winds and places in the shade. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', blends air temperature and moisture content to represent the felt temperature to humans. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.

Humidity

The average relative humidity in July is 77%.

Rainfall

In Clayton, in July, it is raining for 19 days, with typically 3.62" (92mm) of accumulated precipitation. In Clayton, during the entire year, the rain falls for 169.2 days and collects up to 34.96" (888mm) of precipitation.

Snowfall

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

Daylight

In Clayton, the average length of the day in July is 14h and 37min.
On the first day of the month, sunrise is at 5:40 am and sunset at 8:33 pm. On the last day of July, sunrise is at 6:02 am and sunset at 8:15 pm EDT.

Sunshine

With an average of 10.7h of sunshine, July has the most sunshine of the year.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. 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: An average UV index of 6 in July transforms into this advice:
Shield from overexposure. Defense against sun-related harm is required. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Updated: Aug 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the hottest?

July temperatures tend to peak at an average high of 84.4°F (29.1°C) and dip to a low of 69.3°F (20.7°C).

How hot does it get in July?

The high-temperature, in July, in Clayton, records 84.4°F (29.1°C), while the low-temperature is 69.3°F (20.7°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in July is appraised at 93.2°F (34°C).

What is the average humidity in July?

In Clayton, the average relative humidity in July is 77%.

How many days does it rain in July?

In July, the rain falls for 19 days. Throughout July, 3.62" (92mm) of precipitation is accumulated.

When it does not snow?

May through October are months without snowfall.

What is the average length of the day in July?

In July, the average day length is 14h and 37min.

What time are sunrise and sunset in July?

On the first day of July, sunrise is at 5:40 am and sunset at 8:33 pm. On the last day of the month, sunrise is at 6:02 am and sunset at 8:15 pm EDT.

What month has the most sunshine in Clayton?

July has the most sunshine of the year, with an average of 10.7h of sunshine.

How long on average sun shines in July?

In July, the average sunshine duration is 10.7h.

What is the month with the highest UV index?

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

What is the UV index intensity in July?

In July, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health risk 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 July
Clayton, DE

Average temperature in July - Clayton, DE
  • Average high temperature in July: 84.4°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (39.2°F).

  • Average low temperature in July: 69.3°F

The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (27.9°F).

Average pressure in July
Clayton, DE

Average pressure in July - Clayton, DE
  • Average pressure in July: 29.96"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in July
Clayton, DE

Average wind speed in July - Clayton, DE
  • Average wind speed in July: 6.1mph

The windiest months (with the highest average wind speed) are February and March (9.5mph).
The calmest month (with the lowest average wind speed) is August (6mph).

Average humidity in July
Clayton, DE

Average humidity in July - Clayton, DE
  • Average humidity in July: 77%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is April (73%).

Average rainfall in July
Clayton, DE

Average rainfall in July - Clayton, DE
  • Average rainfall in July: 3.62"

The wettest month (with the highest rainfall) is August (3.86").
The driest month (with the least rainfall) is January (2.13").

Average rainfall days in July
Clayton, DE

Average rainfall days in July - Clayton, DE
  • Average rainfall days in July: 19 days

The month with the highest number of rainy days is July (19 days).
The month with the least rainy days is November (9.3 days).

Average snowfall in July
Clayton, DE

Average snowfall in July - Clayton, DE
  • Average snowfall in July: 0"

The month with the highest snowfall is March (2.6").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in July
Clayton, DE

Average snowfall days in July - Clayton, DE
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (4.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in July /
Average sunshine in July
Clayton, DE

Average daylight in July / Average sunshine in July - Clayton, DE
  • Average daylight in July: 14h and 4min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in July: 10h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).

Average sunshine days in July
Clayton, DE

Average sunshine days in July - Clayton, DE
  • Average sunshine days in July: 9.5 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (9.5 days).

Average UV index in July
Clayton, DE

Average UV index in July - Clayton, DE
  • Average UV index in July: 6

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).

Average cloud cover in July
Clayton, DE

Average cloud cover in July - Clayton, DE
  • Average cloud cover in July: 29

The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 29).

Average visibility in July
Clayton, DE

Average visibility in July - Clayton, DE
  • 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).

Clayton, Delaware, USA

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