July weather forecast
Vermillion, SD

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Weather in July

July represents the height of summer in Vermillion, providing the warmest weather experience of the year. Maximum sunlight hours and minimum cloud cover result in increased UV index levels, requiring proper sun protection for those venturing outdoors. Seasonal temperature highs reach up to 84.4°F (29.1°C), indicating the need for staying hydrated and cool. Even as thunderstorms whip up typically in the afternoons, they fail to dispel the intense heat entirely. Enjoying the warm weather in the city varies greatly, from lazy days of sunshine to sometimes challenging heatwaves.

Temperature

The highest temperatures in Vermillion are recorded in July, with averages reaching a high of 84.4°F (29.1°C) and a low of 64.9°F (18.3°C).

Heat index

Throughout July, the heat index is appraised at a tropical 93.2°F (34°C). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.

Humidity

In Vermillion, the average relative humidity in July is 74%.

Rainfall

In July, in Vermillion, South Dakota, the rain falls for 12.6 days. Throughout July, 1.89" (48mm) of precipitation is accumulated. Throughout the year, in Vermillion, there are 116.6 rainfall days, and 21.26" (540mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In Vermillion, the average length of the day in July is 14h and 58min.
On the first day of July in Vermillion, sunrise is at 5:53 am and sunset at 9:09 pm. On the last day of the month, sunrise is at 6:19 am and sunset at 8:49 pm CDT.

Sunshine

July has the most sunshine of the year in Vermillion, with an average of 10.9h 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 reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: During July, 6 as the daily maximum UV index converts into the following advice:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
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Frequently asked questions

What month is the hottest in Vermillion?

In Vermillion, the average temperatures in July are the highest, with a peak at 84.4°F (29.1°C) and a low of 64.9°F (18.3°C).

How hot is it in Vermillion in July?

July temperatures in Vermillion, South Dakota, vary between a high-temperature of 84.4°F (29.1°C) and a low-temperature of 64.9°F (18.3°C). In July, the average heat index (a.k.a. 'feels like', 'felt air 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 Vermillion?

The average relative humidity in July is 74%.

How much does it rain in Vermillion in July?

In Vermillion, South Dakota, in July, it is raining for 12.6 days, with typically 1.89" (48mm) of accumulated precipitation.

When it does not snow in Vermillion?

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

How many hours of daylight does Vermillion have in July?

In Vermillion, the average day length in July is 14h and 58min.

When are sunrise and sunset in July in Vermillion?

On the first day of July in Vermillion, sunrise is at 5:53 am and sunset at 9:09 pm. On the last day of the month, sunrise is at 6:19 am and sunset at 8:49 pm CDT.

What month has the most sunshine in Vermillion?

July has the most sunshine of the year, with an average of 10.9h of sunshine.

How many hours of sunshine does Vermillion have in July?

In Vermillion, South Dakota, the average sunshine duration in July is 10.9h.

What are the months with the highest UV index in Vermillion?

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

What is the UV index intensity in July in Vermillion?

The average daily maximum UV index in July is 6. A UV Index of 6 to 7 symbolizes a high hazard to health 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
Vermillion, SD

Average temperature in July - Vermillion, SD
  • Average high temperature in July: 84.4°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (26.8°F).

  • Average low temperature in July: 64.9°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).

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Average pressure in July
Vermillion, SD

Average pressure in July - Vermillion, SD
  • Average pressure in July: 29.93"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

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Average wind speed in July
Vermillion, SD

Average wind speed in July - Vermillion, SD
  • Average wind speed in July: 7.8mph

The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).

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Average humidity in July
Vermillion, SD

Average humidity in July - Vermillion, SD
  • Average humidity in July: 74%

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (65%).

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Average rainfall in July
Vermillion, SD

Average rainfall in July - Vermillion, SD
  • Average rainfall in July: 1.89"

The wettest month (with the highest rainfall) is June (3.35").
The driest months (with the least rainfall) are January and February (0.63").

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Average rainfall days in July
Vermillion, SD

Average rainfall days in July - Vermillion, SD
  • Average rainfall days in July: 12.6 days

The month with the highest number of rainy days is June (17.3 days).
The months with the least rainy days are January and February (2.8 days).

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Average snowfall in July
Vermillion, SD

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

The months with the highest snowfall are January and February (2.83").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in July
Vermillion, SD

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

The month with the highest number of snowfall days is February (7.1 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
Vermillion, SD

Average daylight in July / Average sunshine in July - Vermillion, 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 6min).

  • Average sunshine in July: 10h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

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Average sunshine days in July
Vermillion, SD

Average sunshine days in July - Vermillion, SD
  • Average sunshine days in July: 15.8 days

The month with the most sunshine days is January (22.2 days).
The month with the least sunshine days is June (10.3 days).

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Average UV index in July
Vermillion, SD

Average UV index in July - Vermillion, 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 January (UV index 1).

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Average cloud cover in July
Vermillion, SD

Average cloud cover in July - Vermillion, SD
  • Average cloud cover in July: 25

The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 25).

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Average visibility in July
Vermillion, SD

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

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