August weather forecastRoslyn, SD
August
Weather in August
August, the last month of the summer in Roslyn, is also a moderately hot month, with an average temperature ranging between min 58.8°F (14.9°C) and max 80.1°F (26.7°C).Temperature
August registers an average high-temperature of a still moderately hot 80.1°F (26.7°C), slightly varied from July's 81°F (27.2°C). August nights observe an average temperature dip to a moderate 58.8°F (14.9°C).Humidity
In August, the average relative humidity is 67%.Rainfall
In Roslyn, in August, during 12.3 rainfall days, 2.01" (51mm) of precipitation is typically accumulated. In Roslyn, during the entire year, the rain falls for 112.9 days and collects up to 22.09" (561mm) of precipitation.Snowfall
In Roslyn, snow does not fall in June through September.Daylight
The average length of the day in August is 14h and 3min.On the first day of August in Roslyn, sunrise is at 6:14 am and sunset at 8:57 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 8:08 pm CDT.
Sunshine
The average sunshine in August is 10.3h.UV index
In August, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In August, the UV index of 5 transforms into the following advice:
Undertake precautions - Guarding against sun damage is counselled. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Roslyn, SD
- Average high temperature in August: 80.1°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (18.9°F).
- Average low temperature in August: 58.8°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (5°F).
Average pressure in August
Roslyn, SD
- Average pressure in August: 29.92"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
Roslyn, SD
- Average wind speed in August: 8.8mph
The windiest month (with the highest average wind speed) is April (11.7mph).
The calmest month (with the lowest average wind speed) is July (8.7mph).
Average humidity in August
Roslyn, SD
- Average humidity in August: 67%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is September (66%).
Average rainfall in August
Roslyn, SD
- Average rainfall in August: 2.01"
The wettest month (with the highest rainfall) is July (3.58").
The driest month (with the least rainfall) is November (0.63").
Average rainfall days in August
Roslyn, SD
- Average rainfall days in August: 12.3 days
The month with the highest number of rainy days is June (17.9 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in August
Roslyn, SD
- Average snowfall in August: 0"
The month with the highest snowfall is December (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Roslyn, SD
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (15.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Roslyn, SD
- Average daylight in August: 14h and 6min
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 18min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in August
Roslyn, SD
- Average sunshine days in August: 16.5 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is June (10.4 days).
Average UV index in August
Roslyn, 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, November and December (UV index 1).
Average cloud cover in August
Roslyn, SD
- Average cloud cover in August: 27
The month with the most cloud cover is January (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 27).
Average visibility in August
Roslyn, SD
- Average visibility in August: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
