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
August observes an average high-temperature of a still moderately hot 80.1°F (26.7°C), marking an insignificant difference from July's 81.1°F (27.3°C). Astoria's nighttime temperature during August is consistently averaged at a mild 59.5°F (15.3°C).Humidity
In Astoria, the average relative humidity in August is 72%.Rainfall
In Astoria, during August, the rain falls for 11.9 days and regularly aggregates up to 1.5" (38mm) of precipitation. In Astoria, during the entire year, the rain falls for 101.9 days and collects up to 14.61" (371mm) of precipitation.Snowfall
In Astoria, snow does not fall in June through September.Daylight
In August, the average length of the day is 13h and 59min.On the first day of August, sunrise is at 6:13 am and sunset at 8:51 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 8:03 pm CDT.
Sunshine
In Astoria, the average sunshine in August is 10.3h.UV index
In August, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: In August, a daily maximum UV index of 5 leads to the following instructions:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Direct Sun exposure should be minimized especially during midday when radiation is most intense. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in August?
What is the average humidity in August?
How much does it rain in August?
When it does not snow?
What is the average length of the day in August?
What time are sunrise and sunset in August in Astoria?
How many hours of sunshine does Astoria have in August?
What is the UV index reading in August?
Average temperature in August
Astoria, SD
- Average high temperature in August: 80.1°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (20.5°F).
- Average low temperature in August: 59.5°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (7.2°F).
Average pressure in August
Astoria, 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 (29.86"Hg).
Average wind speed in August
Astoria, SD
- Average wind speed in August: 8.1mph
The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is July (8mph).
Average humidity in August
Astoria, SD
- Average humidity in August: 72%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (67%).
Average rainfall in August
Astoria, SD
- Average rainfall in August: 1.5"
The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in August
Astoria, SD
- Average rainfall days in August: 11.9 days
The month with the highest number of rainy days is June (16.5 days).
The month with the least rainy days is January (1.7 days).
Average snowfall in August
Astoria, SD
- Average snowfall in August: 0"
The month with the highest snowfall is February (3.27").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Astoria, SD
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Astoria, SD
- Average daylight in August: 14h and 0min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in August: 10h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in August
Astoria, SD
- Average sunshine days in August: 16.6 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (11.3 days).
Average UV index in August
Astoria, 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 November (UV index 1).
Average cloud cover in August
Astoria, SD
- Average cloud cover in August: 26
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in August
Astoria, 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).
Astoria, South Dakota, USA
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