July weather forecast
Dallas, SD

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Weather in July

July in Dallas, South Dakota, is a hot summer month, with an average temperature fluctuating between 88°F (31.1°C) and 66.7°F (19.3°C).

Temperature

July is the warmest month of the year, registering average temperatures as high as 88°F (31.1°C) and as low as 66.7°F (19.3°C).

Heat index

The heat index value during July is computed to be a torrid 95°F (35°C). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. 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 'feels like', is a metric representing the sensation of warmth when air temperature and moisture come together. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are highly critical to babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

The average relative humidity in July in Dallas is 58%.

Rainfall

In Dallas, in July, during 12.9 rainfall days, 2.09" (53mm) of precipitation is typically accumulated. Throughout the year, there are 103.9 rainfall days, and 16.85" (428mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall in Dallas.

Daylight

In July, the average length of the day is 15h and 1min.
On the first day of the month, sunrise is at 6:02 am and sunset at 9:21 pm. On the last day of July, in Dallas, sunrise is at 6:28 am and sunset at 9:00 pm CDT.

Sunshine

The month with the most sunshine in Dallas is July, with an average of 11.4h of sunshine.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index, 6 during July, leads to the following recommendations:
Guard oneself from overexposure. Defence against sun injury is vital. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Updated: Feb 14, 2024 | Published by: Weather U.S. | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What is the warmest month in Dallas?

July is the warmest month in Dallas, South Dakota, exhibiting average temperatures of 88°F (31.1°C) at the peak and 66.7°F (19.3°C) at the base.

How hot is it in Dallas in July?

The average high-temperature and low-temperature in Dallas during July are 88°F (31.1°C) and 66.7°F (19.3°C) respectively. The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in July is computed to be 95°F (35°C).

What is the average humidity in July in Dallas?

In July, the average relative humidity in Dallas, South Dakota, is 58%.

How many days does it rain in July in Dallas?

In Dallas, South Dakota, in July, during 12.9 rainfall days, 2.09" (53mm) of precipitation is typically accumulated.

When it does not snow in Dallas?

June through September are months without snowfall in Dallas.

How many hours of daylight does Dallas have in July?

The average day length in July in Dallas is 15h and 1min.

When are sunrise and sunset in July in Dallas?

In July, on the first day of the month, sunrise is at 6:02 am and sunset at 9:21 pm. On the last day of the month, in Dallas, sunrise is at 6:28 am and sunset at 9:00 pm CDT.

What month has the most sunshine in Dallas?

The month with the most sunshine in Dallas is July, with an average of 11.4h of sunshine.

How long on average sun shines in July in Dallas?

In Dallas, South Dakota, the average sunshine duration in July is 11.4h.

When is the highest UV index in Dallas?

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

What is the UV index intensity in July in Dallas?

In Dallas, the average daily maximum UV index in July is 6. A UV Index of 6 to 7 symbolizes a high health threat from exposure to the Sun's 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
Dallas, SD

Average temperature in July - Dallas, SD
  • Average high temperature in July: 88°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in July: 66.7°F

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).

Average pressure in July
Dallas, SD

Average pressure in July - Dallas, SD
  • Average pressure in July: 29.91"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

Average wind speed in July
Dallas, SD

Average wind speed in July - Dallas, SD
  • Average wind speed in July: 9.9mph

The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest month (with the lowest average wind speed) is August (9.8mph).

Average humidity in July
Dallas, SD

Average humidity in July - Dallas, SD
  • Average humidity in July: 58%

The month with the highest relative humidity is January (82%).
The months with the lowest relative humidity are August and September (57%).

Average rainfall in July
Dallas, SD

Average rainfall in July - Dallas, SD
  • Average rainfall in July: 2.09"

The wettest month (with the highest rainfall) is June (2.8").
The driest month (with the least rainfall) is January (0.47").

Average rainfall days in July
Dallas, SD

Average rainfall days in July - Dallas, SD
  • Average rainfall days in July: 12.9 days

The month with the highest number of rainy days is June (15.3 days).
The months with the least rainy days are January and February (2.7 days).

Average snowfall in July
Dallas, SD

Average snowfall in July - Dallas, SD
  • Average snowfall in July: 0"

The month with the highest snowfall is December (3.19").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in July
Dallas, SD

Average snowfall days in July - Dallas, SD
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (9.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in July /
Average sunshine in July
Dallas, SD

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

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in July: 11h and 2min

The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).

Average sunshine days in July
Dallas, SD

Average sunshine days in July - Dallas, SD
  • Average sunshine days in July: 14 days

The month with the most sunshine days is November (20.8 days).
The month with the least sunshine days is June (11.2 days).

Average UV index in July
Dallas, SD

Average UV index in July - Dallas, SD
  • Average UV index in July: 6

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in July
Dallas, SD

Average cloud cover in July - Dallas, SD
  • Average cloud cover in July: 20

The month with the most cloud cover is January (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 20).

Average visibility in July
Dallas, SD

Average visibility in July - Dallas, 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).

Dallas, South Dakota, USA

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