July weather forecast
Eureka, SD

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Weather in July

July in Eureka, South Dakota, is a tropical summer month, with temperature in the range of an average high of 86.4°F (30.2°C) and an average low of 65.5°F (18.6°C).

Temperature

July, on average, is the warmest month, registering a high temperature of 86.4°F (30.2°C) and a low of 65.5°F (18.6°C).

Heat index

For most parts of July, the heat index is appraised at a tropical 89.6°F (32°C). With ongoing exposure and activity, one might experience weariness, and heat cramps could ensue.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.

Humidity

In Eureka, the average relative humidity in July is 54%.

Rainfall

In Eureka, South Dakota, in July, it is raining for 11 days, with typically 2.09" (53mm) of accumulated precipitation. Throughout the year, in Eureka, South Dakota, there are 89.4 rainfall days, and 15.39" (391mm) of precipitation is accumulated.

Snowfall

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

Daylight

In July, the average length of the day is 15h and 18min.
On the first day of July in Eureka, sunrise is at 5:53 am and sunset at 9:31 pm. On the last day of the month, sunrise is at 6:21 am and sunset at 9:08 pm CDT.

Sunshine

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

UV index

The months with the highest UV index in Eureka are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: In July, the maximum UV index of 6 translates into these guidelines:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. 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. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the warmest month in Eureka?

July, with its average high-temperature of 86.4°F (30.2°C) and an average low-temperature of 65.5°F (18.6°C), holds the record as the warmest month in Eureka, South Dakota.

How hot does it get in Eureka in July?

In Eureka, in July, the average high-temperature is 86.4°F (30.2°C), and the average low-temperature is 65.5°F (18.6°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in July is appraised at 89.6°F (32°C).

What is the average humidity in July in Eureka?

The average relative humidity in July in Eureka is 54%.

How many days does it rain in July in Eureka?

In Eureka, in July, it is raining for 11 days, with typically 2.09" (53mm) of accumulated precipitation.

When it does not snow in Eureka?

June through September are months without snowfall in Eureka.

How many hours of daylight does Eureka have in July?

In July, the average day length is 15h and 18min.

What time are sunrise and sunset in July in Eureka?

On the first day of July, sunrise is at 5:53 am and sunset at 9:31 pm. On the last day of the month, sunrise is at 6:21 am and sunset at 9:08 pm CDT.

What month has the most sunshine in Eureka?

The month with the most sunshine is July, with an average of 11.4h of sunshine.

How many hours of sunshine does Eureka have in July?

The average sunshine duration in July in Eureka, South Dakota, is 11.4h.

When is the highest UV index in Eureka?

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

How high is the UV index in July in Eureka?

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

Average temperature in July - Eureka, 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
Eureka, SD

Average pressure in July - Eureka, 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
Eureka, SD

Average wind speed in July - Eureka, 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
Eureka, SD

Average humidity in July - Eureka, 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
Eureka, SD

Average rainfall in July - Eureka, 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
Eureka, SD

Average rainfall days in July - Eureka, 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
Eureka, SD

Average snowfall in July - Eureka, 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
Eureka, SD

Average snowfall days in July - Eureka, 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
Eureka, SD

Average daylight in July / Average sunshine in July - Eureka, 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
Eureka, SD

Average sunshine days in July - Eureka, 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
Eureka, SD

Average UV index in July - Eureka, 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
Eureka, SD

Average cloud cover in July - Eureka, 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
Eureka, SD

Average visibility in July - Eureka, 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).

Eureka, South Dakota, USA

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