August weather forecastSaint George, UT
August
Weather in August
August carries forward the heat of July with high temperatures slightly dropping to 92.3°F (33.5°C). The city's weather is generally hot and humid, with a noticeable increase in rainfall. This period continues to be hot and humid as the aftermath of the moisture-laden monsoon winds becomes predominant.Temperature
The advent of August denotes an average high-temperature of a still tropical 92.3°F (33.5°C), subtly different from July's 93.9°F (34.4°C). In August, Saint George reports a consistent average low-temperature of 71.2°F (21.8°C) during the nights.Humidity
The average relative humidity in August is 28%.Rainfall
In Saint George, during August, the rain falls for 5.4 days and regularly aggregates up to 0.55" (14mm) of precipitation. Throughout the year, there are 66.6 rainfall days, and 6.97" (177mm) of precipitation is accumulated.Snowfall
In Saint George, snow does not fall in March through October.Daylight
In August, the average length of the day is 13h and 32min.On the first day of the month, sunrise is at 6:40 am and sunset at 8:41 pm. On the last day of August, sunrise is at 7:04 am and sunset at 8:03 pm MDT.
Sunshine
The average sunshine in August is 11.5h.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.Note: A maximum daily UV index of 7 during August morphs into the following directions:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Saint George, UT
- Average high temperature in August: 92.3°F
The warmest month (with the highest average high temperature) is July (93.9°F).
The month with the lowest average high temperature is December (47.7°F).
- Average low temperature in August: 71.2°F
The month with the highest average low temperature is July (72.3°F).
The coldest month (with the lowest average low temperature) is December (31.6°F).
Average pressure in August
Saint George, UT
- Average pressure in August: 29.91"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in August
Saint George, UT
- Average wind speed in August: 5.3mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest months (with the lowest average wind speed) are August and December (5.3mph).
Average humidity in August
Saint George, UT
- Average humidity in August: 28%
The month with the highest relative humidity is January (59%).
The month with the lowest relative humidity is June (18%).
Average rainfall in August
Saint George, UT
- Average rainfall in August: 0.55"
The wettest month (with the highest rainfall) is March (0.98").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days in August
Saint George, UT
- Average rainfall days in August: 5.4 days
The month with the highest number of rainy days is March (8.3 days).
The month with the least rainy days is June (1.8 days).
Average snowfall in August
Saint George, UT
- Average snowfall in August: 0"
The month with the highest snowfall is February (0.2").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days in August
Saint George, UT
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is December (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in August /
Average sunshine in August
Saint George, UT
- Average daylight in August: 13h and 30min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in August: 11h and 30min
The months with the most sunshine are June and July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days in August
Saint George, UT
- Average sunshine days in August: 19.8 days
The month with the most sunshine days is June (26.3 days).
The month with the least sunshine days is July (17.9 days).
Average UV index in August
Saint George, UT
- Average UV index in August: 7
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in August
Saint George, UT
- Average cloud cover in August: 7
The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is June (Cloud cover 6).
Average visibility in August
Saint George, UT
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
