July weather forecast
Herreid, SD

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Weather in July

July in Herreid, South Dakota, is a tropical summer month, with an average temperature varying between 86.4°F (30.2°C) and 65.5°F (18.6°C).

Temperature

July is the warmest month of the year, registering average temperatures as high as 86.4°F (30.2°C) and as low as 65.5°F (18.6°C).

Heat index

The heat index value for July is evaluated at a tropical 89.6°F (32°C). If activity and exposure persist, they could induce fatigue, leading to possible heat cramps.
The metrics for the heat index are tailored for both shady environments and light winds. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a value derived by merging air temperature with the humidity to convey how the climate feels. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly 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

The average relative humidity in July is 54%.

Rainfall

In Herreid, during July, the rain falls for 11 days and regularly aggregates up to 2.09" (53mm) of precipitation. In Herreid, during the entire year, the rain falls for 89.4 days and collects up to 15.39" (391mm) of precipitation.

Snowfall

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

Daylight

In Herreid, the average length of the day in July is 15h and 18min.
On the first day of July, sunrise is at 5:54 am and sunset at 9:34 pm. On the last day of the month, sunrise is at 6:23 am and sunset at 9:10 pm CDT.

Sunshine

With an average of 11.4h of sunshine, July has the most sunshine of the year.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The UV index of 6 during July translates into the following guidance:
Ward off overexposure. Defence against solar harm is crucial. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Updated: Jul 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the warmest months in Herreid?

In Herreid, July records the average highest temperatures, peaking at 86.4°F (30.2°C) and reaching a low of 65.5°F (18.6°C).

How hot is it in July?

The high-temperature, in July, in Herreid, records 86.4°F (30.2°C), while the low-temperature is 65.5°F (18.6°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in July is evaluated at 89.6°F (32°C).

What is the average humidity in July in Herreid?

The average relative humidity in July is 54%.

How many days does it rain in July?

In Herreid, South Dakota, in July, during 11 rainfall days, 2.09" (53mm) of precipitation is typically accumulated.

When it does not snow?

June through September are months without snowfall.

How many hours of daylight does Herreid have in July?

The average day length in July is 15h and 18min.

When are sunrise and sunset in July?

On the first day of July, sunrise is at 5:54 am and sunset at 9:34 pm. On the last day of the month, sunrise is at 6:23 am and sunset at 9:10 pm CDT.

What month has the most sunshine?

July has the most sunshine of the year, with an average of 11.4h of sunshine.

How long on average sun shines in July?

The average sunshine duration in July is 11.4h.

What are the months with the highest UV index?

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

What is the UV index intensity in July?

The average daily maximum UV index in July is 6. A UV Index reading 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
Herreid, SD

Average temperature in July - Herreid, SD
  • Average high temperature in July: 86.4°F

The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (23°F).

  • Average low temperature in July: 65.5°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (9°F).

Average pressure in July
Herreid, SD

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

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

Average wind speed in July
Herreid, SD

Average wind speed in July - Herreid, SD
  • Average wind speed in July: 9.8mph

The windiest month (with the highest average wind speed) is April (11.5mph).
The calmest month (with the lowest average wind speed) is February (9.4mph).

Average humidity in July
Herreid, SD

Average humidity in July - Herreid, SD
  • Average humidity in July: 54%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (52%).

Average rainfall in July
Herreid, SD

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

The wettest month (with the highest rainfall) is June (2.32").
The driest month (with the least rainfall) is January (0.47").

Average rainfall days in July
Herreid, SD

Average rainfall days in July - Herreid, SD
  • Average rainfall days in July: 11 days

The month with the highest number of rainy days is June (13.8 days).
The month with the least rainy days is February (1.3 days).

Average snowfall in July
Herreid, SD

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

The month with the highest snowfall is February (3.98").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in July
Herreid, SD

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

The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in July / Average sunshine in July - Herreid, 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 July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days in July
Herreid, SD

Average sunshine days in July - Herreid, SD
  • Average sunshine days in July: 16.7 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (13.6 days).

Average UV index in July
Herreid, SD

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

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

Average cloud cover in July
Herreid, SD

Average cloud cover in July - Herreid, SD
  • Average cloud cover in July: 21

The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 21).

Average visibility in July
Herreid, SD

Average visibility in July - Herreid, SD
  • Average visibility in July: 6mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

Herreid, South Dakota, USA

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