Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
Groton experiences a transition to a still warm 83.1°F (28.4°C) in average high-temperatures with the arrival of August, not greatly differing from July's 84.7°F (29.3°C). Nighttime in August brings a stark departure from the daily high in Groton, resting at an average low-temperature of 61°F (16.1°C).Heat index
The average heat index in August is estimated at a tropical 86°F (30°C). Continuing activity during long-lasting exposure might induce tiredness and result in heat cramps.Understand that the heat index values take into account shaded locations and mild winds. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', reflects the feeling of heat when considering both air temperature and humidity. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
Humidity
August and September, with an average relative humidity of 60%, are the least humid months in Groton.Rainfall
In August, the rain falls for 10.4 days. Throughout August, 1.61" (41mm) of precipitation is accumulated. In Groton, during the entire year, the rain falls for 97.2 days and collects up to 18.35" (466mm) of precipitation.Snowfall
In Groton, snow does not fall in June through September.Daylight
In August, the average length of the day in Groton, South Dakota, is 14h and 3min.On the first day of the month, sunrise is at 6:17 am and sunset at 8:59 pm. On the last day of August, in Groton, sunrise is at 6:53 am and sunset at 8:11 pm CDT.
Sunshine
In Groton, South Dakota, the average sunshine in August is 10.7h.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index in Groton. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: An average maximum UV index of 6 in August leads to these recommendations:
Deflect overexposure. Sun protection is a necessity. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Frequently asked questions
How hot is August in Groton?
What is the least humid month in Groton?
What is the average humidity in August in Groton?
How many days does it rain in August in Groton?
When it does not snow in Groton?
How many hours of daylight does Groton have in August?
What time are sunrise and sunset in August in Groton?
How long on average sun shines in August in Groton?
When is the highest UV index in Groton?
How high is the UV index in August in Groton?
Average temperature in August
Groton, SD
- Average high temperature in August: 83.1°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 August: 61°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 August
Groton, SD
- Average pressure in August: 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 August
Groton, SD
- Average wind speed in August: 8.3mph
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 August
Groton, SD
- Average humidity in August: 60%
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 August
Groton, SD
- Average rainfall in August: 1.61"
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 August
Groton, SD
- Average rainfall days in August: 10.4 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 August
Groton, SD
- Average snowfall in August: 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 August
Groton, SD
- Average snowfall days in August: 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 August /
Average sunshine in August
Groton, SD
- Average daylight in August: 14h and 0min
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 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: 3h and 54min).
Average sunshine days in August
Groton, SD
- Average sunshine days in August: 18.2 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 August
Groton, SD
- Average UV index in August: 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 August
Groton, SD
- Average cloud cover in August: 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 August
Groton, 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).
Groton, South Dakota, USA
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