July weather - Summer 2024

Weather in July
Frequently asked questions
Average temperature in July
Average pressure in July
Average wind speed in July
Average humidity in July
Average rainfall in July
Average rainfall days in July
Average snowfall in July
Average snowfall days in July
Average daylight in July
Average sunshine in July
Average sunshine days in July
Average UV index in July
Average cloud cover in July
Average visibility in July

Large, scenic rocks and trees around this tiny Sylvan Lake located in the tranquil Custer State Park in Custer City, South Dakota

Weather in July

July in Custer is identified by its characteristic high temperatures, the warmest in the year, reaching up to 81.7°F (27.6°C). However, it's not simply the escalating temperatures but also the reduced rainfall that distinguishes July from its precursor month, June. The weather in July indicates the peak of summer with long, brightly lit days conducive for outdoor recreational activities. While hot, the climate is not excessively humid or uncomfortable. Residents and tourists alike can enjoy a pleasant mix of summer warmth and lowered rainfall levels.

Temperature

Custer's warmest temperatures are experienced in July, with average high temperatures of 81.7°F (27.6°C) and lows of 60.4°F (15.8°C).

Heat index

In July, the average heat index is appraised at 82.4°F (28°C). Persisting in activity during long-term exposure might induce weariness, with subsequent heat cramps.
Bear in mind that the heat index values are determined for shaded areas and light breezes. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', offers an insight into how hot it feels when we factor in moisture content. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.

Humidity

In July, the average relative humidity is 54%.

Rainfall

In Custer, during July, the rain falls for 17.3 days and regularly aggregates up to 2.91" (74mm) of precipitation. In Custer, during the entire year, the rain falls for 135.4 days and collects up to 20.39" (518mm) of precipitation.

Snowfall

In Custer, snow does not fall in June through August.

Daylight

The average length of the day in July is 15h and 4min.
On the first day of the month, sunrise is at 5:16 am and sunset at 8:40 pm. On the last day of July, sunrise is at 5:43 am and sunset at 8:18 pm MDT.

Sunshine

In Custer, South Dakota, the average sunshine in July is 11.6h.

UV index

July is the month with the highest UV index, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: A daily maximum UV index of 6 in July translates into the following instructions:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.

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Frequently asked questions

What part of the year is the hottest in Custer?

July is Custer's warmest month, registering average high temperatures of 81.7°F (27.6°C) and lows of 60.4°F (15.8°C).

What is the temperature in July in Custer?

In July, the average high-temperature and low-temperature in Custer are 81.7°F (27.6°C) and 60.4°F (15.8°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in July is appraised at 82.4°F (28°C).

What is the average humidity in July in Custer?

In Custer, South Dakota, the average relative humidity in July is 54%.

How much does it rain in Custer in July?

In Custer, South Dakota, in July, during 17.3 rainfall days, 2.91" (74mm) of precipitation is typically accumulated.

When it does not snow in Custer?

June through August are months without snowfall in Custer.

How many hours of daylight does Custer have in July?

In July, the average day length is 15h and 4min.

When are sunrise and sunset in July in Custer?

On the first day of July, sunrise is at 5:16 am and sunset at 8:40 pm. On the last day of the month, sunrise is at 5:43 am and sunset at 8:18 pm MDT.

How long on average sun shines in July in Custer?

In Custer, South Dakota, the average sunshine duration in July is 11.6h.

When is the highest UV index in Custer?

July is the month with the highest UV index in Custer, with an average maximum UV index of 6.

What is the UV index intensity in July in Custer?

In July, the average daily maximum UV index in Custer is 6. A UV Index reading of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J July A S O N D

Jun

July

Aug

Average high temperature

74.1°F 23.4°C

81.7°F 27.6°C

80.1°F 26.7°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

9.2mph 14.8km/h

8.3mph 13.4km/h

7.8mph 12.6km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

17.3

16.6

Average snowfall

0" 0mm

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

7.9

8.6

9.9

Average UV index

Average cloud cover

Average visibility

Average temperature in July
Custer, SD

Average high temperature in July: 81.7°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is December (29.8°F).

Average low temperature in July: 60.4°F

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is February (16.2°F).

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Average pressure in July
Custer, SD

Average pressure in July: 29.9"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed in July
Custer, SD

Average wind speed in July: 7.5mph

The windiest month (with the highest average wind speed) is April (9.5mph).
The calmest month (with the lowest average wind speed) is August (7mph).

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Average humidity in July
Custer, SD

Average humidity in July: 54%

The months with the highest relative humidity are January and February (77%).
The months with the lowest relative humidity are August and September (52%).

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Average rainfall in July
Custer, SD

Average rainfall in July: 2.91"

The wettest month (with the highest rainfall) is June (3.19").
The driest month (with the least rainfall) is January (0.47").

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Average rainfall days in July
Custer, SD

Average rainfall days in July: 17.3 days

The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is November (4.5 days).

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Average snowfall in July
Custer, SD

Average snowfall in July: 0"

The month with the highest snowfall is April (7.24").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in July
Custer, SD

Average snowfall days in July: 0 days

The month with the highest number of snowfall days is February (12.9 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
Custer, 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 4min

The month with the most sunshine is August (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 6h and 0min).

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Average sunshine days in July
Custer, SD

Average sunshine days in July: 8.6 days

The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is May (7.8 days).

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Average UV index in July
Custer, SD

Average UV index in July: 6

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

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Average cloud cover in July
Custer, SD

Average cloud cover in July: 19

The month with the most cloud cover is April (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 17).

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Average visibility in July
Custer, 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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July weather forecast
Custer, SD

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