July weather forecast
Marty, SD

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Weather in July

July in Marty, South Dakota, is a hot summer month, with temperature in the range of an average high of 86.5°F (30.3°C) and an average low of 65.7°F (18.7°C).

Temperature

July, recording an average high temperature of 86.5°F (30.3°C) and a low temperature of 65.7°F (18.7°C), is Marty's warmest month.

Heat index

Throughout July, the heat index is appraised at a very hot 95°F (35°C). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.
Understanding the heat index involves considering values for shaded locales with light wind. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is found by incorporating humidity levels into the air temperature measurement. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are especially vital to children. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

In Marty, the average relative humidity in July is 67%.

Rainfall

In Marty, South Dakota, in July, it is raining for 12.4 days, with typically 1.73" (44mm) of accumulated precipitation. Throughout the year, there are 104.1 rainfall days, and 14.29" (363mm) of precipitation is accumulated.

Snowfall

In Marty, snow does not fall in May through September.

Daylight

The average length of the day in July is 14h and 59min.
On the first day of the month, sunrise is at 5:58 am and sunset at 9:16 pm. On the last day of July, sunrise is at 6:24 am and sunset at 8:55 pm CDT.

Sunshine

July has the most sunshine of the year, with an average of 11.1h of sunshine.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: A maximum daily UV index of 6 during July morphs into the following directions:
Prevent overexposure. Protection from the sun's harmful effects is needed. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Updated: Jul 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the hottest?

July registers as the month with the average highest temperatures, reaching 86.5°F (30.3°C) at its peak and 65.7°F (18.7°C) at the lowest.

How hot is it in July?

The high-temperature during July is 86.5°F (30.3°C) and the low-temperature is 65.7°F (18.7°C). In July, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 95°F (35°C).

What is the average humidity in July?

In Marty, the average relative humidity in July is 67%.

How much does it rain in July?

In Marty, in July, it is raining for 12.4 days, with typically 1.73" (44mm) of accumulated precipitation.

When it does not snow?

In Marty, snow does not fall in May through September.

How many hours of daylight does Marty have in July?

The average day length in July in Marty is 14h and 59min.

What time are sunrise and sunset in July?

In July, on the first day of the month, sunrise is at 5:58 am and sunset at 9:16 pm. On the last day of the month, sunrise is at 6:24 am and sunset at 8:55 pm CDT.

What month has the most sunshine?

July has the most sunshine of the year, with an average of 11.1h of sunshine.

How long on average sun shines in July?

The average sunshine duration in July is 11.1h.

When is the highest UV index?

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

What is the UV index reading in July in Marty?

The average daily maximum UV index in July 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
Marty, SD

Average temperature in July - Marty, SD
  • Average high temperature in July: 86.5°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (27.3°F).

  • Average low temperature in July: 65.7°F

The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).

Average pressure in July
Marty, SD

Average pressure in July - Marty, SD
  • Average pressure in July: 29.92"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).

Average wind speed in July
Marty, SD

Average wind speed in July - Marty, SD
  • Average wind speed in July: 8.3mph

The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (8.3mph).

Average humidity in July
Marty, SD

Average humidity in July - Marty, SD
  • Average humidity in July: 67%

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (62%).

Average rainfall in July
Marty, SD

Average rainfall in July - Marty, SD
  • Average rainfall in July: 1.73"

The wettest month (with the highest rainfall) is May (2.72").
The driest month (with the least rainfall) is February (0.31").

Average rainfall days in July
Marty, SD

Average rainfall days in July - Marty, SD
  • Average rainfall days in July: 12.4 days

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (2.9 days).

Average snowfall in July
Marty, SD

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

The months with the highest snowfall are January and March (1.93").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in July
Marty, SD

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

The month with the highest number of snowfall days is January (8.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in July / Average sunshine in July - Marty, 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: 11h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).

Average sunshine days in July
Marty, SD

Average sunshine days in July - Marty, SD
  • Average sunshine days in July: 14.6 days

The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is June (12.3 days).

Average UV index in July
Marty, SD

Average UV index in July - Marty, 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, February, November and December (UV index 2).

Average cloud cover in July
Marty, SD

Average cloud cover in July - Marty, SD
  • Average cloud cover in July: 23

The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 23).

Average visibility in July
Marty, SD

Average visibility in July - Marty, 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).

Marty, South Dakota, USA

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