July weather forecast
Long Valley, SD

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Weather in July

July is a tropical summer month in Long Valley, South Dakota, with an average temperature fluctuating between 89.2°F (31.8°C) and 68.5°F (20.3°C).

Temperature

July, on average, is the warmest month, registering a high temperature of 89.2°F (31.8°C) and a low of 68.5°F (20.3°C).

Heat index

The heat index value during July is appraised at a hot 93.2°F (34°C). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.
It is important to note that the heat index values are for shaded areas and light wind scenarios. 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 'real feel' or 'felt air temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.

Humidity

In July, the average relative humidity is 49%.

Rainfall

In Long Valley, during July, the rain falls for 12.4 days and regularly aggregates up to 1.81" (46mm) of precipitation. Throughout the year, in Long Valley, there are 95.3 rainfall days, and 13.74" (349mm) of precipitation is accumulated.

Snowfall

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

Daylight

In July, the average length of the day is 15h and 2min.
On the first day of the month, sunrise is at 5:09 am and sunset at 8:30 pm. On the last day of July, sunrise is at 5:35 am and sunset at 8:09 pm MDT.

Sunshine

The average sunshine in July is 11.6h.

UV index

The month with the highest UV index in Long Valley is July, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the average person.
Note: The maximum UV index, 7 during July, leads to the following recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Updated: Jul 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the hottest?

In Long Valley, July is the month with the highest recorded average temperatures, measuring a high of 89.2°F (31.8°C) and a low of 68.5°F (20.3°C).

How hot is July in Long Valley?

The high-temperature during July is 89.2°F (31.8°C) and the low-temperature is 68.5°F (20.3°C). In July, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is appraised at 93.2°F (34°C).

What is the average humidity in July in Long Valley?

In July, the average relative humidity is 49%.

How much does it rain in July?

In Long Valley, during July, the rain falls for 12.4 days and regularly aggregates up to 1.81" (46mm) of precipitation.

When it does not snow in Long Valley?

June through September are months without snowfall in Long Valley.

What is the average length of the day in July?

In July, the average day length is 15h and 2min.

What time are sunrise and sunset in July?

In July, on the first day of the month, sunrise is at 5:09 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 5:35 am and sunset at 8:09 pm MDT.

How long on average sun shines in July?

In Long Valley, the average sunshine duration in July is 11.6h.

When is the highest UV index?

With an average maximum UV index of 7, July is the month with the highest UV index.

What is the UV index reading in July?

In July, the average daily maximum UV index is 7. A UV Index reading of 6 to 7 represents a high hazard to health from 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 July
Long Valley, SD

Average temperature in July - Long Valley, SD
  • Average high temperature in July: 89.2°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 July: 68.5°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 July
Long Valley, SD

Average pressure in July - Long Valley, SD
  • Average pressure in July: 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 July
Long Valley, SD

Average wind speed in July - Long Valley, SD
  • Average wind speed in July: 10.3mph

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 July
Long Valley, SD

Average humidity in July - Long Valley, SD
  • Average humidity in July: 49%

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

Average rainfall in July
Long Valley, SD

Average rainfall in July - Long Valley, SD
  • Average rainfall in July: 1.81"

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 July
Long Valley, SD

Average rainfall days in July - Long Valley, SD
  • Average rainfall days in July: 12.4 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 July
Long Valley, SD

Average snowfall in July - Long Valley, SD
  • Average snowfall in July: 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 July
Long Valley, SD

Average snowfall days in July - Long Valley, SD
  • Average snowfall days in July: 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 July /
Average sunshine in July
Long Valley, SD

Average daylight in July / Average sunshine in July - Long Valley, SD
  • Average daylight in July: 15h and 0min

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 July: 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 July
Long Valley, SD

Average sunshine days in July - Long Valley, SD
  • Average sunshine days in July: 15.5 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 July
Long Valley, SD

Average UV index in July - Long Valley, SD
  • Average UV index in July: 7

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 July
Long Valley, SD

Average cloud cover in July - Long Valley, SD
  • Average cloud cover in July: 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 July
Long Valley, SD

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

Long Valley, South Dakota, USA

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