July weather forecast
Summerville, SD

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Weather in July

July, like June, in Summerville, South Dakota, is a moderately hot summer month, with an average temperature fluctuating between 63.1°F (17.3°C) and 84.7°F (29.3°C).

Temperature

July is the month that records the highest temperatures, with averages ranging from a high of 84.7°F (29.3°C) to a low of 63.1°F (17.3°C).

Heat index

The heat index for July is estimated at a hot 86°F (30°C). Staying active during long-term exposure might result in a state of exhaustion and cause heat cramps.
In the scope of the heat index, its values resonate with shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical 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

The average relative humidity in July in Summerville, South Dakota, is 53%.

Rainfall

In Summerville, in July, it is raining for 13.8 days, with typically 1.65" (42mm) of accumulated precipitation. Throughout the year, in Summerville, there are 101.3 rainfall days, and 14.25" (362mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall in Summerville.

Daylight

In Summerville, the average length of the day in July is 15h and 18min.
On the first day of July in Summerville, sunrise is at 5:03 am and sunset at 8:42 pm. On the last day of the month, sunrise is at 5:31 am and sunset at 8:18 pm MDT.

Sunshine

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

UV index

The months with the highest UV index in Summerville, South Dakota, are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum daily UV index of 6 during July translates into the following directions:
Shun overexposure. Protection from sun ravages is indispensable. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
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Frequently asked questions

What is the warmest month in Summerville?

Summerville, South Dakota, experiences its average highest temperatures in July, reaching a peak of 84.7°F (29.3°C) and a minimum of 63.1°F (17.3°C).

Is it hot in Summerville during July?

In Summerville, 84.7°F (29.3°C) is the average high-temperature and 63.1°F (17.3°C) is the average low-temperature during July. The average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines air temperature and relative humidity, in July is estimated at 86°F (30°C).

What is the average humidity in July in Summerville?

In July, the average relative humidity in Summerville, South Dakota, is 53%.

How much does it rain in Summerville in July?

In July, in Summerville, the rain falls for 13.8 days. Throughout July, 1.65" (42mm) of precipitation is accumulated.

When it does not snow in Summerville?

June through September are months without snowfall in Summerville.

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

In Summerville, South Dakota, the average day length in July is 15h and 18min.

What time are sunrise and sunset in July in Summerville?

In July, on the first day of the month, sunrise is at 5:03 am and sunset at 8:42 pm. On the last day of the month, in Summerville, sunrise is at 5:31 am and sunset at 8:18 pm MDT.

How long on average sun shines in July in Summerville?

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

What is the month with the highest UV index in Summerville?

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

How high is the UV index in July in Summerville?

In July, the average daily maximum UV index in Summerville is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability 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
Summerville, SD

Average temperature in July - Summerville, SD
  • Average high temperature in July: 84.7°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (25.2°F).

  • Average low temperature in July: 63.1°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).

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Average pressure in July
Summerville, SD

Average pressure in July - Summerville, SD
  • Average pressure in July: 29.9"Hg

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

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Average wind speed in July
Summerville, SD

Average wind speed in July - Summerville, SD
  • Average wind speed in July: 9.7mph

The windiest month (with the highest average wind speed) is April (11.7mph).
The calmest month (with the lowest average wind speed) is August (9.6mph).

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Average humidity in July
Summerville, SD

Average humidity in July - Summerville, SD
  • Average humidity in July: 53%

The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are August and September (51%).

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Average rainfall in July
Summerville, SD

Average rainfall in July - Summerville, SD
  • Average rainfall in July: 1.65"

The wettest month (with the highest rainfall) is June (2.28").
The driest month (with the least rainfall) is January (0.47").

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Average rainfall days in July
Summerville, SD

Average rainfall days in July - Summerville, SD
  • Average rainfall days in July: 13.8 days

The month with the highest number of rainy days is June (15.1 days).
The month with the least rainy days is January (2.9 days).

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Average snowfall in July
Summerville, SD

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

The month with the highest snowfall is February (4.53").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in July
Summerville, SD

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

The month with the highest number of snowfall days is February (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in July / Average sunshine in July - Summerville, SD
  • Average daylight in July: 15h and 2min

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in July: 11h and 2min

The month with the most sunshine is August (Average sunshine: 11h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

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Average sunshine days in July
Summerville, SD

Average sunshine days in July - Summerville, SD
  • Average sunshine days in July: 13.6 days

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (11.7 days).

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Average UV index in July
Summerville, SD

Average UV index in July - Summerville, 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).

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Average cloud cover in July
Summerville, SD

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

The months with the most cloud cover are January and February (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 20).

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Average visibility in July
Summerville, SD

Average visibility in July - Summerville, 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).

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Summerville, South Dakota, USA

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