July weather forecast
Westport, SD

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Weather in July

July, like June, in Westport, South Dakota, is a moderately hot summer month, with an average temperature varying between 63.1°F (17.3°C) and 84.7°F (29.3°C).

Temperature

The warmest month is July, with an average high-temperature of 84.7°F (29.3°C) and an average low-temperature of 63.1°F (17.3°C).

Heat index

For most parts of July, the heat index is evaluated at a tropical 89.6°F (32°C). Ongoing activity coupled with exposure often results in weariness and could induce heat cramps.
Heat index determinations are made taking into account the shade and light air movements. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'apparent temperature', comes about by integrating the temperature readings with the humidity levels. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.

Humidity

In Westport, the average relative humidity in July is 65%.

Rainfall

In July, the rain falls for 12.2 days. Throughout July, 2.6" (66mm) of precipitation is accumulated. In Westport, during the entire year, the rain falls for 97.2 days and collects up to 18.35" (466mm) of precipitation.

Snowfall

June through September are months without snowfall in Westport, South Dakota.

Daylight

In Westport, South Dakota, the average length of the day in July is 15h and 17min.
On the first day of the month, sunrise is at 5:49 am and sunset at 9:27 pm. On the last day of July, in Westport, South Dakota, sunrise is at 6:17 am and sunset at 9:03 pm CDT.

Sunshine

The month with the most sunshine in Westport is July, with an average of 11.1h of sunshine.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index in Westport, South Dakota. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In July, the average maximum UV index of 6 translates into the following recommendations:
Resist extreme sun exposure. Guarding against solar damage is essential. 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. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
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 Westport?

The highest temperatures in Westport are recorded in July, with averages reaching a high of 84.7°F (29.3°C) and a low of 63.1°F (17.3°C).

How hot is July in Westport?

Westport in July has an average high-temperature of 84.7°F (29.3°C) and an average low-temperature of 63.1°F (17.3°C). In July, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, is evaluated at 89.6°F (32°C).

What is the average humidity in July in Westport?

The average relative humidity in July in Westport is 65%.

How many days does it rain in July in Westport?

In Westport, South Dakota, in July, it is raining for 12.2 days, with typically 2.6" (66mm) of accumulated precipitation.

When it does not snow in Westport?

June through September are months without snowfall in Westport.

What is the average length of the day in July in Westport?

In July, the average day length is 15h and 17min.

What time are sunrise and sunset in July in Westport?

In July, on the first day of the month, sunrise is at 5:49 am and sunset at 9:27 pm. On the last day of the month, in Westport, South Dakota, sunrise is at 6:17 am and sunset at 9:03 pm CDT.

What month has the most sunshine in Westport?

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

How many hours of sunshine does Westport have in July?

In Westport, South Dakota, the average sunshine duration in July is 11.1h.

What is the month with the highest UV index in Westport?

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

What is the UV index reading in July in Westport?

In July, the average daily maximum UV index in Westport is 6. A UV Index estimate 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
Westport, SD

Average temperature in July - Westport, SD
  • Average high temperature in July: 84.7°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (20.7°F).

  • Average low temperature in July: 63.1°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (6.3°F).

Average pressure in July
Westport, SD

Average pressure in July - Westport, SD
  • Average pressure in July: 29.91"Hg

The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed in July
Westport, SD

Average wind speed in July - Westport, SD
  • Average wind speed in July: 8.4mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).

Average humidity in July
Westport, SD

Average humidity in July - Westport, SD
  • Average humidity in July: 65%

The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are August and September (60%).

Average rainfall in July
Westport, SD

Average rainfall in July - Westport, SD
  • Average rainfall in July: 2.6"

The wettest month (with the highest rainfall) is June (3.46").
The driest month (with the least rainfall) is January (0.59").

Average rainfall days in July
Westport, SD

Average rainfall days in July - Westport, SD
  • Average rainfall days in July: 12.2 days

The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is February (2 days).

Average snowfall in July
Westport, SD

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

The month with the highest snowfall is January (3.82").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in July
Westport, SD

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

The month with the highest number of snowfall days is January (13 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in July / Average sunshine in July - Westport, SD
  • Average daylight in July: 15h and 2min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • 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: 3h and 54min).

Average sunshine days in July
Westport, SD

Average sunshine days in July - Westport, SD
  • Average sunshine days in July: 16.8 days

The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is June (12.7 days).

Average UV index in July
Westport, SD

Average UV index in July - Westport, 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 and November (UV index 1).

Average cloud cover in July
Westport, SD

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

The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are July and August (Cloud cover 23).

Average visibility in July
Westport, SD

Average visibility in July - Westport, 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).

Westport, South Dakota, USA

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