Salt Lake City Weather in August
August's weather is slightly cooler than the previous month at Salt Lake City, Utah. This month also has more wind and thunderstorms than any other. Yet it is another dry month with little rain, low humidity and lots of sun.
This page gives detailed information on the typical August temperature, precipitation, sun, humidity, wind and storms for Salt Lake City. The numbers here are historical averages based on climate data gathered at the Salt Lake City International Airport, located a few miles northwest of the city's center.
|92 °F||August average high||33 °C|
|67 °F||August average low||19 °C|
|21 days||90 °F max. or more (32 °C)|
|7 days||60 °F min. or less (16 °C)|
Nearly every day in August warms to over 80 degrees Fahrenheit (27 degrees Celsius) in Salt Lake City. The city averages 2 days this month when the thermometer reaches into the 100s °F (over 38 °C).
Most nights this month cool to 70 °F (21 °C) or less. But most years, nighttime temperatures stay above 50 °F (10 °C) in August.
|0.6 in||total precipitation||15 mm|
|5 days||of rain|
Half the time, Salt Lake City receives 0.2 to 0.7 inches (5 to 18 mm) of rainfall in August. One in four years has drier weather, while another one in four is wetter.
|16 days||clear skies|
The sun's rays reach the ground in Salt Lake City during 82 percent of daylight hours on average in August, for a total of 349 hours in the month. Typically on 16 days this month the sky is mainly clear, with at most 30 percent cloud cover.
Sunlight in August at Salt Lake City lasts for 13 hours and 43 minutes a day on average. The longest day of the month is the 1st with 14 hours and 18 minutes of daylight. By the end of the month, the days have shortened to 13:07 from sunrise to sunset. These durations can vary by a minute or two from year to year.
|39 %||August average humidity|
The relative humidity in Salt Lake City during August usually peaks at 54 percent in the morning then drops to 23 percent by late afternoon.
|Local Time||2 am||5 am||8 am||11 am||2 pm||5 pm||8 pm||11 pm|
|9.7 mph||August wind speed average||15.6 kph|
August is the windiest month in Salt Lake City.
|0 days||rainfall of 0.5 inches (13 mm) or more|
|8 days||with thunderstorms in August|
Salt Lake City has more thunderstorms in August than any other month. August storms that produce half and inch or more of rain in one day occur just once in five years.
The weather data here are long-term averages provided by the US National Centers for Environmental Information (NCEI). Temperature and precipitation are 1991-2020 normals while humidity and thunderstorms are 1961-1990 normals.