July weather forecast
Interior, SD

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Weather in July

July is a tropical summer month in Interior, South Dakota, with an average temperature ranging between max 89.2°F (31.8°C) and min 68.5°F (20.3°C).

Temperature

In Interior, temperatures reach their average annual highs in July, measuring 89.2°F (31.8°C) and a minimum average of 68.5°F (20.3°C).

Heat index

During July, the heat index is calculated to be a tropical 93.2°F (34°C). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
Factoring in the heat index, values are geared towards shaded areas with light breezes. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', arises from combining readings of air temperature and relative moisture content. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. 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 highly important for children. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.

Humidity

In July, the average relative humidity in Interior is 49%.

Rainfall

In July, the rain falls for 12.4 days. Throughout July, 1.81" (46mm) of precipitation is accumulated. Throughout the year, in Interior, there are 95.3 rainfall days, and 13.74" (349mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

The average length of the day in July is 15h and 4min.
On the first day of July in Interior, sunrise is at 5:10 am and sunset at 8:33 pm. On the last day of the month, sunrise is at 5:36 am and sunset at 8:11 pm MDT.

Sunshine

The average sunshine in July in Interior is 11.6h.

UV index

The month with the highest UV index 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 unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 7 in July interprets into the following recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less 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. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the hottest time of year in Interior?

July is the month when Interior experiences its warmest temperatures, averaging a high of 89.2°F (31.8°C) and a low of 68.5°F (20.3°C).

How hot is July in Interior?

During July, Interior experiences an average high-temperature of 89.2°F (31.8°C) and a low-temperature of 68.5°F (20.3°C). In July, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 93.2°F (34°C).

What is the average humidity in July in Interior?

The average relative humidity in July in Interior is 49%.

How many days does it rain in July in Interior?

In Interior, in July, it is raining for 12.4 days, with typically 1.81" (46mm) of accumulated precipitation.

When it does not snow in Interior?

In Interior, snow does not fall in June through September.

What is the average length of the day in July in Interior?

In July, the average day length in Interior, South Dakota, is 15h and 4min.

When are sunrise and sunset in July in Interior?

On the first day of July, sunrise is at 5:10 am and sunset at 8:33 pm. On the last day of the month, sunrise is at 5:36 am and sunset at 8:11 pm MDT.

How many hours of sunshine does Interior have in July?

In Interior, South Dakota, the average sunshine duration in July is 11.6h.

When is the highest UV index in Interior?

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

How high is the UV index in July in Interior?

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 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 July
Interior, SD

Average temperature in July - Interior, 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
Interior, SD

Average pressure in July - Interior, 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
Interior, SD

Average wind speed in July - Interior, 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
Interior, SD

Average humidity in July - Interior, 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
Interior, SD

Average rainfall in July - Interior, 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
Interior, SD

Average rainfall days in July - Interior, 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
Interior, SD

Average snowfall in July - Interior, 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
Interior, SD

Average snowfall days in July - Interior, 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
Interior, SD

Average daylight in July / Average sunshine in July - Interior, SD
  • Average daylight in July: 15h and 1min

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
Interior, SD

Average sunshine days in July - Interior, 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
Interior, SD

Average UV index in July - Interior, 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
Interior, SD

Average cloud cover in July - Interior, 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
Interior, SD

Average visibility in July - Interior, 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).

Interior, South Dakota, USA

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