August weather forecast
Spencer, SD

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Weather in August

The last month of the summer, August, is also a moderately hot month in Spencer, South Dakota, with an average temperature ranging between max 84.4°F (29.1°C) and min 62.1°F (16.7°C).

Temperature

The beginning of August reveals an average high-temperature of a still warm 84.4°F (29.1°C), showing minimal deviation from the previous month. Nighttime temperatures exhibit a substantial dip from daytime highs during August, averaging at an enjoyable 62.1°F (16.7°C).

Heat index

For August, the heat index is estimated at a hot 89.6°F (32°C). If exposure and activity persist, fatigue could ensue, possibly leading to heat cramps.
The metrics for the heat index are tailored for both shady environments and light winds. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.

Humidity

In August, the average relative humidity is 65%.

Rainfall

In Spencer, in August, during 10.5 rainfall days, 1.14" (29mm) of precipitation is typically accumulated. Throughout the year, in Spencer, there are 93.2 rainfall days, and 11.3" (287mm) of precipitation is accumulated.

Snowfall

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

Daylight

The average length of the day in August is 13h and 56min.
On the first day of August, sunrise is at 6:20 am and sunset at 8:53 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 8:07 pm CDT.

Sunshine

The average sunshine in August in Spencer is 10.7h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the average person.
Note: A maximum UV index of 6 in August translates into the following recommendations:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in August?

In August, in Spencer, the average high-temperature is 84.4°F (29.1°C), and the average low-temperature is 62.1°F (16.7°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is estimated at 89.6°F (32°C).

What is the average humidity in August in Spencer?

The average relative humidity in August is 65%.

How many days does it rain in August?

In Spencer, during August, the rain falls for 10.5 days and regularly aggregates up to 1.14" (29mm) of precipitation.

When it does not snow?

May through September are months without snowfall.

How many hours of daylight does Spencer have in August?

The average day length in August is 13h and 56min.

When is the sunrise / sunset in August?

In August, on the first day of the month, sunrise is at 6:20 am and sunset at 8:53 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 8:07 pm CDT.

How long on average sun shines in August?

In Spencer, the average sunshine duration in August is 10.7h.

What are the months with the highest UV index?

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

How high is the UV index in August?

In Spencer, the average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability 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
Spencer, SD

Average temperature in August - Spencer, SD
  • Average high temperature in August: 84.4°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (24.4°F).

  • Average low temperature in August: 62.1°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (10.2°F).

Average pressure in August
Spencer, SD

Average pressure in August - Spencer, SD
  • Average pressure in August: 29.92"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
Spencer, SD

Average wind speed in August - Spencer, SD
  • Average wind speed in August: 8.7mph

The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (8.6mph).

Average humidity in August
Spencer, SD

Average humidity in August - Spencer, SD
  • Average humidity in August: 65%

The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are September and October (63%).

Average rainfall in August
Spencer, SD

Average rainfall in August - Spencer, SD
  • Average rainfall in August: 1.14"

The wettest month (with the highest rainfall) is May (1.65").
The driest months (with the least rainfall) are February and November (0.28").

Average rainfall days in August
Spencer, SD

Average rainfall days in August - Spencer, SD
  • Average rainfall days in August: 10.5 days

The month with the highest number of rainy days is June (13.6 days).
The month with the least rainy days is February (1.9 days).

Average snowfall in August
Spencer, SD

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

The month with the highest snowfall is February (1.42").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Spencer, SD

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

The month with the highest number of snowfall days is January (8.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Spencer, 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: 10h and 4min

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 24min).

Average sunshine days in August
Spencer, SD

Average sunshine days in August - Spencer, SD
  • Average sunshine days in August: 17.3 days

The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is June (12.8 days).

Average UV index in August
Spencer, SD

Average UV index in August - Spencer, SD
  • Average UV index in August: 6

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).

Average cloud cover in August
Spencer, SD

Average cloud cover in August - Spencer, SD
  • Average cloud cover in August: 24

The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 22).

Average visibility in August
Spencer, SD

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

Spencer, South Dakota, USA

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