August weather forecast
Riverview, DE

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Weather in August

August, the last month of the summer in Riverview, is also a moderately hot month, with an average temperature fluctuating between 82.2°F (27.9°C) and 68.2°F (20.1°C).

Temperature

Riverview transitions into August recording an average high-temperature of a still warm 82.2°F (27.9°C), closely aligning with the preceding month's temperature. Riverview records an average low of 68.2°F (20.1°C) throughout the nights in August.

Heat index

Throughout August, the heat index is evaluated at a tropical 89.6°F (32°C). Prolonged exposure combined with continuous activity could lead to exhaustion, and possibly heat cramps.
It is important to note that the heat index values are for shaded areas and light wind scenarios. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.

Humidity

The months with the highest humidity in Riverview, Delaware, are May, August and September, with an average relative humidity of 79%.

Rainfall

August is the month with the most rainfall. Rain falls for 16.9 days and accumulates 3.9" (99mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

In August, the average length of the day is 13h and 39min.
On the first day of the month, sunrise is at 6:03 am and sunset at 8:13 pm. On the last day of August, sunrise is at 6:30 am and sunset at 7:33 pm EDT.

Sunshine

In Riverview, the average sunshine in August is 10.3h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 6 during August translates into the following guidance:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Updated: Jul 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Riverview in August?

In Riverview, in August, the average high-temperature is 82.2°F (27.9°C), and the average low-temperature is 68.2°F (20.1°C). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is evaluated at 89.6°F (32°C).

What is the most humid month?

The months with the highest humidity are May, August and September, with an average relative humidity of 79%.

What is the average humidity in August?

In August, the average relative humidity is 79%.

What is the wettest month in Riverview?

August is the month with the most rainfall. Rain falls for 16.9 days and accumulates 3.9" (99mm) of precipitation.

How many days does it rain in August?

In Riverview, in August, during 16.9 rainfall days, 3.9" (99mm) of precipitation is typically accumulated.

When it does not snow in Riverview?

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

How many hours of daylight does Riverview have in August?

In August, the average day length is 13h and 39min.

When is the sunrise / sunset in August?

In August, on the first day of the month, sunrise is at 6:03 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 7:33 pm EDT.

How long on average sun shines in August?

In Riverview, the average sunshine duration in August is 10.3h.

What is the month with the highest UV index?

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

How high is the UV index in August?

The average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health vulnerability 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 August
Riverview, DE

Average temperature in August - Riverview, DE
  • Average high temperature in August: 82.2°F

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (40.3°F).

  • Average low temperature in August: 68.2°F

The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).

Average pressure in August
Riverview, DE

Average pressure in August - Riverview, DE
  • Average pressure in August: 29.98"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 August
Riverview, DE

Average wind speed in August - Riverview, DE
  • Average wind speed in August: 6.3mph

The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

Average humidity in August
Riverview, DE

Average humidity in August - Riverview, DE
  • Average humidity in August: 79%

The months with the highest relative humidity are May, August and September (79%).
The months with the lowest relative humidity are January, March, April and November (74%).

Average rainfall in August
Riverview, DE

Average rainfall in August - Riverview, DE
  • Average rainfall in August: 3.9"

The wettest month (with the highest rainfall) is August (3.9").
The driest month (with the least rainfall) is January (2.13").

Average rainfall days in August
Riverview, DE

Average rainfall days in August - Riverview, DE
  • Average rainfall days in August: 16.9 days

The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is November (9 days).

Average snowfall in August
Riverview, DE

Average snowfall in August - Riverview, DE
  • Average snowfall in August: 0"

The month with the highest snowfall is January (1.93").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Riverview, DE

Average snowfall days in August - Riverview, DE
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (4.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in August /
Average sunshine in August
Riverview, DE

Average daylight in August / Average sunshine in August - Riverview, DE
  • Average daylight in August: 13h 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 August: 10h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

Average sunshine days in August
Riverview, DE

Average sunshine days in August - Riverview, DE
  • Average sunshine days in August: 12 days

The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is July (9.7 days).

Average UV index in August
Riverview, DE

Average UV index in August - Riverview, DE
  • Average UV index in August: 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 August
Riverview, DE

Average cloud cover in August - Riverview, DE
  • Average cloud cover in August: 31

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).

Average visibility in August
Riverview, DE

Average visibility in August - Riverview, DE
  • Average visibility in August: 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).

Riverview, Delaware, USA

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