August weather forecast
Long Valley, SD

Share

Weather in August

The last month of the summer, August, is another tropical month in Long Valley, South Dakota, with an average temperature ranging between max 87.1°F (30.6°C) and min 66.9°F (19.4°C).

Temperature

Long Valley ushers in August with an average high-temperature of a still tropical 87.1°F (30.6°C), showing a close resemblance to the previous month. Long Valley observes an average low-temperature of 66.9°F (19.4°C) during August.

Heat index

August's mean heat index is appraised at a hot 89.6°F (32°C). Exhaustion might be the outcome of enduring exposure and continuous activity, with a risk of heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a metric representing the sensation of warmth when air temperature and moisture come together. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.

Humidity

The average relative humidity in August is 48%.

Rainfall

In Long Valley, in August, during 10.8 rainfall days, 1.18" (30mm) of precipitation is typically accumulated. In Long Valley, during the entire year, the rain falls for 95.3 days and collects up to 13.74" (349mm) of precipitation.

Snowfall

In Long Valley, snow does not fall in June through September.

Daylight

In Long Valley, the average length of the day in August is 13h and 55min.
On the first day of August, sunrise is at 5:36 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 6:09 am and sunset at 7:22 pm MDT.

Sunshine

The month with the most sunshine is August, with an average of 11.7h of sunshine.

UV index

In Long Valley, the average daily maximum UV index in August is 6. 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: In August, a daily UV index of 6 turns into the following recommendations:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Enhance your sun protection with tightly woven, yet airy clothing.
Updated: Jul 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in August?

An average high-temperature, in August, in Long Valley, is 87.1°F (30.6°C) and the average low-temperature is 66.9°F (19.4°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in August is appraised at 89.6°F (32°C).

What is the average humidity in August?

In Long Valley, the average relative humidity in August is 48%.

How much does it rain in August?

In Long Valley, in August, it is raining for 10.8 days, with typically 1.18" (30mm) of accumulated precipitation.

When it does not snow?

June 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 55min.

When is the sunrise / sunset in August?

On the first day of August, sunrise is at 5:36 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 6:09 am and sunset at 7:22 pm MDT.

What month has the most sunshine?

August has the most sunshine of the year, with an average of 11.7h of sunshine.

How long on average sun shines in August?

In Long Valley, the average sunshine duration in August is 11.7h.

What is the UV index intensity in August?

In August, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from unsafe exposure to Sun's UV rays.
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
Long Valley, SD

Average temperature in August - Long Valley, SD
  • Average high temperature in August: 87.1°F

The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (29.8°F).

  • Average low temperature in August: 66.9°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).

Average pressure in August
Long Valley, SD

Average pressure in August - Long Valley, SD
  • Average pressure in August: 29.9"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed in August
Long Valley, SD

Average wind speed in August - Long Valley, SD
  • Average wind speed in August: 10.2mph

The windiest month (with the highest average wind speed) is April (12.1mph).
The calmest month (with the lowest average wind speed) is February (10.1mph).

Average humidity in August
Long Valley, SD

Average humidity in August - Long Valley, SD
  • Average humidity in August: 48%

The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is September (47%).

Average rainfall in August
Long Valley, SD

Average rainfall in August - Long Valley, SD
  • Average rainfall in August: 1.18"

The wettest month (with the highest rainfall) is May (2.09").
The driest month (with the least rainfall) is January (0.39").

Average rainfall days in August
Long Valley, SD

Average rainfall days in August - Long Valley, SD
  • Average rainfall days in August: 10.8 days

The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is February (2.6 days).

Average snowfall in August
Long Valley, SD

Average snowfall in August - Long Valley, SD
  • Average snowfall in August: 0"

The month with the highest snowfall is February (3.15").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Long Valley, SD

Average snowfall days in August - Long Valley, SD
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (8.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Long Valley, SD

Average daylight in August / Average sunshine in August - Long Valley, SD
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in August: 11h and 4min

The month with the most sunshine is August (Average sunshine: 11h and 42min).
The months with the least sunshine are January and February (Average sunshine: 5h and 12min).

Average sunshine days in August
Long Valley, SD

Average sunshine days in August - Long Valley, SD
  • Average sunshine days in August: 16.7 days

The month with the most sunshine days is December (21.1 days).
The months with the least sunshine days are April and June (14.1 days).

Average UV index in August
Long Valley, SD

Average UV index in August - Long Valley, SD
  • Average UV index in August: 6

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in August
Long Valley, SD

Average cloud cover in August - Long Valley, SD
  • Average cloud cover in August: 18

The month with the most cloud cover is January (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 18).

Average visibility in August
Long Valley, SD

Average visibility in August - Long Valley, SD
  • 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).

Long Valley, South Dakota, USA

Weather forecast for your location

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