August weather forecast
Monroe, SD

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Weather in August

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

Temperature

As July transitions into August, the average high-temperature rests at a still moderately hot 81.1°F (27.3°C), maintaining a close resemblance to the previous month. Significant variation from daytime temperatures marks August, with the month recording a nightly average of 59.5°F (15.3°C).

Heat index

Throughout August, the heat index is estimated at a hot 86°F (30°C). One might feel worn out with persistent exposure and activity, resulting in heat cramps.
The heat index's values are generally associated with conditions in shade and light breezes. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', joins air temperature with relative humidity to produce a temperature perception for humans. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.

Humidity

The average relative humidity in August is 73%.

Rainfall

In Monroe, in August, it is raining for 13.9 days, with typically 2.48" (63mm) of accumulated precipitation. In Monroe, during the entire year, the rain falls for 118.3 days and collects up to 22.76" (578mm) of precipitation.

Snowfall

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

Daylight

The average length of the day in August is 13h and 55min.
On the first day of August, sunrise is at 6:19 am and sunset at 8:50 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 8:05 pm CDT.

Sunshine

In Monroe, the average sunshine in August is 9.9h.

UV index

The average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In August, a regular UV index of 5 translates into these guidelines:
Take necessary precautions - Suggestions to elude sunburn are provided. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Boost your sun resistance with garments that are densely woven yet spacious.

Frequently asked questions

What are the temperatures in August?

In Monroe, 81.1°F (27.3°C) is the average high-temperature and 59.5°F (15.3°C) is the average low-temperature during August. The average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines relative humidity and air temperature, in August is estimated at 86°F (30°C).

What is the average humidity in August?

The average relative humidity in August is 73%.

How many days does it rain in August?

In Monroe, in August, it is raining for 13.9 days, with typically 2.48" (63mm) of accumulated precipitation.

When it does not snow?

June through September are months without snowfall.

How many hours of daylight does Monroe have in August?

In Monroe, the average day length in August is 13h and 55min.

What time are sunrise and sunset in August?

On the first day of August, sunrise is at 6:19 am and sunset at 8:50 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?

In Monroe, South Dakota, the average sunshine duration in August is 9.9h.

What is the UV index intensity in August?

The average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes 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
Monroe, SD

Average temperature in August - Monroe, 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
Monroe, SD

Average pressure in August - Monroe, 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
Monroe, SD

Average wind speed in August - Monroe, 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
Monroe, SD

Average humidity in August - Monroe, 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
Monroe, SD

Average rainfall in August - Monroe, 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
Monroe, SD

Average rainfall days in August - Monroe, 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
Monroe, SD

Average snowfall in August - Monroe, 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
Monroe, SD

Average snowfall days in August - Monroe, 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
Monroe, SD

Average daylight in August / Average sunshine in August - Monroe, 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
Monroe, SD

Average sunshine days in August - Monroe, 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
Monroe, SD

Average UV index in August - Monroe, 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
Monroe, SD

Average cloud cover in August - Monroe, 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
Monroe, SD

Average visibility in August - Monroe, 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).

Monroe, South Dakota, USA

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