August weather forecast
Montrose, SD

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Weather in August

August, the last month of the summer in Montrose, is also a moderately hot month, with an average temperature fluctuating between 59.5°F (15.3°C) and 81.1°F (27.3°C).

Temperature

Montrose's shift into August sets the average high-temperature at a still moderately hot 81.1°F (27.3°C), a figure that deviates only slightly from July's 82.6°F (28.1°C). August nights in Montrose bring a significant cooling from the heat of the day, with averages of 59.5°F (15.3°C).

Heat index

During August, the heat index is calculated to be a hot 86°F (30°C). When exposure and activity are sustained, they could induce fatigue, with a chance of heat cramps.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'feels like' or 'felt air temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.

Humidity

The average relative humidity in August is 73%.

Rainfall

In Montrose, in August, during 13.9 rainfall days, 2.48" (63mm) of precipitation is typically accumulated. Throughout the year, there are 118.3 rainfall days, and 22.76" (578mm) of precipitation is accumulated.

Snowfall

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

Daylight

In August, the average length of the day is 13h and 56min.
On the first day of the month, sunrise is at 6:18 am and sunset at 8:51 pm. On the last day of August, sunrise is at 6:52 am and sunset at 8:05 pm CDT.

Sunshine

The average sunshine in August is 9.9h.

UV index

The average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: A typical high UV index of 5 in August suggests the following recommendations:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Updated: Aug 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Montrose in August?

In August, in Montrose, the average high-temperature is 81.1°F (27.3°C), and the average low-temperature is 59.5°F (15.3°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in August is calculated to be 86°F (30°C).

What is the average humidity in August?

In Montrose, the average relative humidity in August is 73%.

How many days does it rain in August?

In Montrose, during August, the rain falls for 13.9 days and regularly aggregates up to 2.48" (63mm) of precipitation.

When it does not snow?

June through September are months without snowfall.

What is the average length of the day in August in Montrose?

In Montrose, the average day length in August is 13h and 56min.

What time are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 6:18 am and sunset at 8:51 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 8:05 pm CDT.

How long on average sun shines in August?

The average sunshine duration in August is 9.9h.

What is the UV index intensity in August?

In Montrose, the average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to the Sun's 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 August
Montrose, SD

Average temperature in August - Montrose, SD
  • Average high temperature in August: 81.1°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (22.8°F).

  • Average low temperature in August: 59.5°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 (9.3°F).

Average pressure in August
Montrose, SD

Average pressure in August - Montrose, SD
  • Average pressure in August: 29.93"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).

Average wind speed in August
Montrose, SD

Average wind speed in August - Montrose, SD
  • Average wind speed in August: 8.3mph

The windiest month (with the highest average wind speed) is April (11.4mph).
The calmest month (with the lowest average wind speed) is July (8.1mph).

Average humidity in August
Montrose, SD

Average humidity in August - Montrose, SD
  • Average humidity in August: 73%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (67%).

Average rainfall in August
Montrose, SD

Average rainfall in August - Montrose, SD
  • Average rainfall in August: 2.48"

The wettest month (with the highest rainfall) is June (3.62").
The driest month (with the least rainfall) is February (0.63").

Average rainfall days in August
Montrose, SD

Average rainfall days in August - Montrose, SD
  • Average rainfall days in August: 13.9 days

The month with the highest number of rainy days is June (18.3 days).
The month with the least rainy days is February (2.6 days).

Average snowfall in August
Montrose, SD

Average snowfall in August - Montrose, SD
  • Average snowfall in August: 0"

The month with the highest snowfall is December (4.21").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Montrose, SD

Average snowfall days in August - Montrose, SD
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Montrose, SD

Average daylight in August / Average sunshine in August - Montrose, SD
  • Average daylight in August: 13h and 5min

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 August: 9h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

Average sunshine days in August
Montrose, SD

Average sunshine days in August - Montrose, SD
  • Average sunshine days in August: 13 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (9.2 days).

Average UV index in August
Montrose, SD

Average UV index in August - Montrose, SD
  • Average UV index in August: 5

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).

Average cloud cover in August
Montrose, SD

Average cloud cover in August - Montrose, SD
  • Average cloud cover in August: 30

The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is July (Cloud cover 27).

Average visibility in August
Montrose, SD

Average visibility in August - Montrose, SD
  • Average visibility in August: 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).

Montrose, South Dakota, USA

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