August weather forecast
Hartford, SD

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Weather in August

The last month of the summer, August, is another warm month in Hartford, South Dakota, with an average temperature fluctuating between 81.1°F (27.3°C) and 59.5°F (15.3°C).

Temperature

The onset of August brings with it an average high-temperature of a still warm 81.1°F (27.3°C), showing a negligible variation from the month before. Compared to daytime temperatures, Hartford's temperature drops significantly, averaging a mild 59.5°F (15.3°C) during the nights of August.

Heat index

The heat index value for August is appraised at a hot 86°F (30°C). If activity and exposure persist, they could induce fatigue, leading to possible heat cramps.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', combines both the air temperature and the humidity level to give a perceived human temperature. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly relevant to babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.

Humidity

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

Rainfall

In Hartford, during August, the rain falls for 13.9 days and regularly aggregates up to 2.48" (63mm) of precipitation. In Hartford, during the entire year, the rain falls for 118.3 days and collects up to 22.76" (578mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In Hartford, the average length of the day in August is 13h and 55min.
On the first day of August in Hartford, sunrise is at 6:17 am and sunset at 8:50 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 8:04 pm CDT.

Sunshine

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

UV index

In Hartford, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.
Note: A maximum daily UV index of 5 during August morphs into the following directions:
Prioritize safety - Suggestions to prevent sun damage are offered. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
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Frequently asked questions

What is the usual temperature for Hartford in August?

In Hartford, 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. 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 appraised at 86°F (30°C).

What is the average humidity in August in Hartford?

The average relative humidity in August in Hartford, South Dakota, is 73%.

How much does it rain in Hartford in August?

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

When it does not snow in Hartford?

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

How many hours of daylight does Hartford have in August?

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

What time are sunrise and sunset in August in Hartford?

In August, on the first day of the month, sunrise is at 6:17 am and sunset at 8:50 pm. On the last day of the month, in Hartford, sunrise is at 6:51 am and sunset at 8:04 pm CDT.

How many hours of sunshine does Hartford have in August?

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

What is the UV index reading in August in Hartford?

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

Average temperature in August - Hartford, 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).

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Average pressure in August
Hartford, SD

Average pressure in August - Hartford, 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).

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Average wind speed in August
Hartford, SD

Average wind speed in August - Hartford, 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).

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Average humidity in August
Hartford, SD

Average humidity in August - Hartford, 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%).

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Average rainfall in August
Hartford, SD

Average rainfall in August - Hartford, 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").

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Average rainfall days in August
Hartford, SD

Average rainfall days in August - Hartford, 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).

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Average snowfall in August
Hartford, SD

Average snowfall in August - Hartford, 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").

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Average snowfall days in August
Hartford, SD

Average snowfall days in August - Hartford, 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).

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

Average daylight in August / Average sunshine in August - Hartford, 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).

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Average sunshine days in August
Hartford, SD

Average sunshine days in August - Hartford, 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).

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Average UV index in August
Hartford, SD

Average UV index in August - Hartford, 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).

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Average cloud cover in August
Hartford, SD

Average cloud cover in August - Hartford, 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).

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Average visibility in August
Hartford, SD

Average visibility in August - Hartford, 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).

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Hartford, South Dakota, USA

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