July weather forecast
Erwin, SD

Weather in July

July, the same as June, is a moderately hot summer month in Erwin, South Dakota, with an average temperature varying between 60.8°F (16°C) and 80.8°F (27.1°C).

Temperature

With an average high-temperature of 80.8°F (27.1°C) and an average low-temperature of 60.8°F (16°C), July is the warmest month.

Heat index

The average heat index in July is computed to be 84.2°F (29°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Take into consideration that the heat index values are calculated for 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', 'apparent temperature', 'felt air temperature', or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like activity, differences in body mass, height, and shape, pregnancy, and metabolic differences affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

The average relative humidity in July in Erwin is 73%.

Rainfall

In Erwin, during July, the rain falls for 14.3 days and regularly aggregates up to 2.91" (74mm) of precipitation. Throughout the year, in Erwin, there are 112.3 rainfall days, and 18.78" (477mm) of precipitation is accumulated.

Snowfall

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

Daylight

In July, the average length of the day is 15h and 9min.
On the first day of July, sunrise is at 5:48 am and sunset at 9:18 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 8:56 pm CDT.

Sunshine

With an average of 10.7h of sunshine, July has the most sunshine of the year.

UV index

The months with the highest UV index are June and July, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: The average daily UV index of 6 in July transform into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the warmest month in Erwin?

July is the warmest month in Erwin, South Dakota, with an average high-temperature of 80.8°F (27.1°C) and an average low-temperature of 60.8°F (16°C).

What is the temperature in July in Erwin?

In July, in Erwin, South Dakota, the average high-temperature is 80.8°F (27.1°C), and the average low-temperature is 60.8°F (16°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, in July is computed to be 84.2°F (29°C).

What is the average humidity in July in Erwin?

The average relative humidity in July in Erwin is 73%.

How many days does it rain in July in Erwin?

In Erwin, in July, during 14.3 rainfall days, 2.91" (74mm) of precipitation is typically accumulated.

When it does not snow in Erwin?

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

How many hours of daylight does Erwin have in July?

In Erwin, South Dakota, the average day length in July is 15h and 9min.

When is the sunrise / sunset in July in Erwin?

In July, on the first day of the month, sunrise is at 5:48 am and sunset at 9:18 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 8:56 pm CDT.

What month has the most sunshine in Erwin?

July has the most sunshine of the year in Erwin, South Dakota, with an average of 10.7h of sunshine.

How many hours of sunshine does Erwin have in July?

The average sunshine duration in July in Erwin, South Dakota, is 10.7h.

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

The months with the highest UV index in Erwin are June and July, with an average maximum UV index of 6.

How high is the UV index in July in Erwin?

In July, the average daily maximum UV index is 6. A UV Index reading 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
Erwin, SD

Average temperature in July - Erwin, SD
  • Average high temperature in July: 80.8°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (19.4°F).

  • Average low temperature in July: 60.8°F

The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (5.5°F).

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Average pressure in July
Erwin, SD

Average pressure in July - Erwin, SD
  • Average pressure in July: 29.92"Hg

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

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Average wind speed in July
Erwin, SD

Average wind speed in July - Erwin, SD
  • Average wind speed in July: 8.5mph

The windiest month (with the highest average wind speed) is April (11.6mph).
The calmest month (with the lowest average wind speed) is July (8.5mph).

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Average humidity in July
Erwin, SD

Average humidity in July - Erwin, SD
  • Average humidity in July: 73%

The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are September and October (68%).

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Average rainfall in July
Erwin, SD

Average rainfall in July - Erwin, SD
  • Average rainfall in July: 2.91"

The wettest month (with the highest rainfall) is June (3.19").
The driest months (with the least rainfall) are January and February (0.59").

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Average rainfall days in July
Erwin, SD

Average rainfall days in July - Erwin, SD
  • Average rainfall days in July: 14.3 days

The month with the highest number of rainy days is June (17.2 days).
The month with the least rainy days is February (2.7 days).

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Average snowfall in July
Erwin, SD

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

The months with the highest snowfall are January and December (3.74").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in July
Erwin, SD

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

The month with the highest number of snowfall days is January (14.4 days).
The months with the least snowfall days are June, July and August (0 days).

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

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

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in July: 10h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

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Average sunshine days in July
Erwin, SD

Average sunshine days in July - Erwin, SD
  • Average sunshine days in July: 13.8 days

The month with the most sunshine days is October (19.1 days).
The month with the least sunshine days is June (10.3 days).

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Average UV index in July
Erwin, SD

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

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

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Average cloud cover in July
Erwin, SD

Average cloud cover in July - Erwin, SD
  • Average cloud cover in July: 28

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in July
Erwin, SD

Average visibility in July - Erwin, 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).

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