July weather forecast
Vivian, SD

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Weather in July

July in Vivian, South Dakota, is a tropical summer month, with an average temperature fluctuating between 67.5°F (19.7°C) and 88.7°F (31.5°C).

Temperature

Vivian's warmest month, July, generally records average temperatures ranging from a high of 88.7°F (31.5°C) to a low of 67.5°F (19.7°C).

Heat index

July's heat index is computed to be a hot 93.2°F (34°C). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', measures the perceived warmth when incorporating the humidity present in the air. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.

Humidity

In Vivian, the average relative humidity in July is 53%.

Rainfall

In July, the rain falls for 12.3 days. Throughout July, 1.93" (49mm) of precipitation is accumulated. Throughout the year, there are 98.5 rainfall days, and 13.7" (348mm) of precipitation is accumulated.

Snowfall

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

Daylight

In July, the average length of the day in Vivian is 15h and 5min.
On the first day of the month, sunrise is at 6:02 am and sunset at 9:27 pm. On the last day of July, sunrise is at 6:29 am and sunset at 9:05 pm CDT.

Sunshine

With an average of 11.5h of sunshine, July has the most sunshine of the year.

UV index

July is the month with the highest UV index in Vivian, South Dakota, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 7 in July interprets into the following advice:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
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Frequently asked questions

What part of the year is the hottest in Vivian?

Vivian, South Dakota, reaches its average highest temperatures in July, measuring 88.7°F (31.5°C) at the peak and 67.5°F (19.7°C) at the lowest.

How hot is it in Vivian in July?

The high-temperature, in July, in Vivian, is 88.7°F (31.5°C), while the low-temperature averages to 67.5°F (19.7°C). In July, the average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, is computed to be 93.2°F (34°C).

What is the average humidity in July in Vivian?

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

How much does it rain in Vivian in July?

In Vivian, South Dakota, during July, the rain falls for 12.3 days and regularly aggregates up to 1.93" (49mm) of precipitation.

When it does not snow in Vivian?

June through September are months without snowfall in Vivian, South Dakota.

How many hours of daylight does Vivian have in July?

In July, the average day length is 15h and 5min.

What time are sunrise and sunset in July in Vivian?

On the first day of July in Vivian, sunrise is at 6:02 am and sunset at 9:27 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 9:05 pm CDT.

What month has the most sunshine in Vivian?

The month with the most sunshine in Vivian is July, with an average of 11.5h of sunshine.

How long on average sun shines in July in Vivian?

In Vivian, the average sunshine duration in July is 11.5h.

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

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

What is the UV index intensity in July in Vivian?

In July, the average daily maximum UV index in Vivian, South Dakota, is 7. A UV Index estimate of 6 to 7 represents a high hazard to health from unprotected exposure to 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
Vivian, SD

Average temperature in July - Vivian, SD
  • Average high temperature in July: 88.7°F

The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (26.2°F).

  • Average low temperature in July: 67.5°F

The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).

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Average pressure in July
Vivian, SD

Average pressure in July - Vivian, SD
  • Average pressure in July: 29.9"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).

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Average wind speed in July
Vivian, SD

Average wind speed in July - Vivian, SD
  • Average wind speed in July: 10mph

The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest months (with the lowest average wind speed) are February and August (9.9mph).

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Average humidity in July
Vivian, SD

Average humidity in July - Vivian, 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 (52%).

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Average rainfall in July
Vivian, SD

Average rainfall in July - Vivian, SD
  • Average rainfall in July: 1.93"

The wettest month (with the highest rainfall) is May (2.24").
The driest month (with the least rainfall) is January (0.35").

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Average rainfall days in July
Vivian, SD

Average rainfall days in July - Vivian, SD
  • Average rainfall days in July: 12.3 days

The month with the highest number of rainy days is June (14.2 days).
The month with the least rainy days is February (2.4 days).

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Average snowfall in July
Vivian, SD

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

The month with the highest snowfall is February (3.66").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in July
Vivian, SD

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

The month with the highest number of snowfall days is February (10 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
Vivian, SD

Average daylight in July / Average sunshine in July - Vivian, 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 3min

The month with the most sunshine is July (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
Vivian, SD

Average sunshine days in July - Vivian, SD
  • Average sunshine days in July: 15.1 days

The month with the most sunshine days is November (22.3 days).
The month with the least sunshine days is June (13.7 days).

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Average UV index in July
Vivian, SD

Average UV index in July - Vivian, SD
  • Average UV index in July: 7

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

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Average cloud cover in July
Vivian, SD

Average cloud cover in July - Vivian, SD
  • Average cloud cover in July: 19

The month with the most cloud cover is January (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 19).

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Average visibility in July
Vivian, SD

Average visibility in July - Vivian, 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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Vivian, South Dakota, USA

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