August weather forecast
New Haven, WV

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Weather in August

August, the last month of the summer in New Haven, is also a moderately hot month, with an average temperature ranging between max 85.6°F (29.8°C) and min 62.6°F (17°C).

Temperature

The advent of August presents an average high-temperature of a warm 85.6°F (29.8°C), maintaining a close correlation with the preceding month. New Haven's August nights represent a significant downturn from the day's heat, with an average temperature of 62.6°F (17°C).

Heat index

August's mean heat index is estimated at a very hot 96.8°F (36°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
One should consider that heat index numbers are for shaded settings and light wind. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a single figure representing how weather conditions feel when combining temperature and humidity. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

The least humid month is August, with an average relative humidity of 74%.

Rainfall

In August, the rain falls for 15 days. Throughout August, 2.24" (57mm) of precipitation is accumulated. In New Haven, during the entire year, the rain falls for 170.5 days and collects up to 33.39" (848mm) of precipitation.

Snowfall

In New Haven, snow does not fall in May through September.

Daylight

In August, the average length of the day is 13h and 38min.
On the first day of the month, sunrise is at 6:29 am and sunset at 8:39 pm. On the last day of August, sunrise is at 6:56 am and sunset at 7:59 pm EDT.

Sunshine

The month with the most sunshine is August, with an average of 10.3h of sunshine.

UV index

May 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 health vulnerability from exposure to the Sun's UV rays for the average person.
Note: A maximum high daily UV index of 6 during August translates into the following directions:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Updated: Jul 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is August?

The high-temperature, in August, in New Haven, is 85.6°F (29.8°C), while the low-temperature averages to 62.6°F (17°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is estimated at 96.8°F (36°C).

What is the least humid month?

With an average relative humidity of 74%, August is the least humid month.

What is the average humidity in August?

In New Haven, the average relative humidity in August is 74%.

How many days does it rain in August?

In New Haven, in August, it is raining for 15 days, with typically 2.24" (57mm) of accumulated precipitation.

When it does not snow?

May through September are months without snowfall.

What is the average length of the day in August?

In August, the average day length is 13h and 38min.

When is the sunrise / sunset in August?

In August, on the first day of the month, sunrise is at 6:29 am and sunset at 8:39 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 7:59 pm EDT.

What month has the most sunshine?

August has the most sunshine of the year, with an average of 10.3h of sunshine.

How many hours of sunshine does New Haven have in August?

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

What is the month with the highest UV index?

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

What is the UV index intensity in August?

In New Haven, the average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high hazard to health 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
New Haven, WV

Average temperature in August - New Haven, WV
  • Average high temperature in August: 85.6°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (37.8°F).

  • Average low temperature in August: 62.6°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).

Average pressure in August
New Haven, WV

Average pressure in August - New Haven, WV
  • Average pressure in August: 30.01"Hg

The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

Average wind speed in August
New Haven, WV

Average wind speed in August - New Haven, WV
  • Average wind speed in August: 4.4mph

The windiest month (with the highest average wind speed) is February (7mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).

Average humidity in August
New Haven, WV

Average humidity in August - New Haven, WV
  • Average humidity in August: 74%

The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is August (74%).

Average rainfall in August
New Haven, WV

Average rainfall in August - New Haven, WV
  • Average rainfall in August: 2.24"

The wettest month (with the highest rainfall) is May (4.02").
The driest month (with the least rainfall) is September (1.97").

Average rainfall days in August
New Haven, WV

Average rainfall days in August - New Haven, WV
  • Average rainfall days in August: 15 days

The month with the highest number of rainy days is May (19.4 days).
The month with the least rainy days is November (10.7 days).

Average snowfall in August
New Haven, WV

Average snowfall in August - New Haven, WV
  • Average snowfall in August: 0"

The month with the highest snowfall is February (3.66").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
New Haven, WV

Average snowfall days in August - New Haven, WV
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
New Haven, WV

Average daylight in August / Average sunshine in August - New Haven, WV
  • 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 August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

Average sunshine days in August
New Haven, WV

Average sunshine days in August - New Haven, WV
  • Average sunshine days in August: 13.6 days

The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is May (9.4 days).

Average UV index in August
New Haven, WV

Average UV index in August - New Haven, WV
  • 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, February, November and December (UV index 2).

Average cloud cover in August
New Haven, WV

Average cloud cover in August - New Haven, WV
  • Average cloud cover in August: 33

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 33).

Average visibility in August
New Haven, WV

Average visibility in August - New Haven, WV
  • Average visibility in August: 5mi

The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).

New Haven, West Virginia, USA

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