St. George Weather in August
August in St. George brings extremely high temperatures around 37°C (99°F) during the day, dropping to 23°C (73°F) at night, with some rainfall expected.
Rainfall in St. George in August
This month experiences about 4 days of rain according to historical data, averaging 21 mm (0.8 in). The odd shower may pass through, but it usually doesn't amount to much. A largely dry month overall.
Temperature in St. George in August
August in St. George sees highs of 37°C (99°F) and lows of 23°C (73°F) overnight. Indoor breaks or shaded spots can make the warmer part of the day much more comfortable. Nights remain mild at 23°C (73°F), making evenings a pleasant time to be outdoors.August in St. George can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our St. George's climate page.
St. George Temperature in August
Min Temperature
23°C (73°F)
Max Temperature
37°C (99°F)
Chance of Rain
15%
Precipitation
21 mm (0.8 in)
Rainy days
4 days
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in St. George typically stay consistent throughout August, with daily highs averaging around 37°C (99°F). Nights are pleasant, with lows typically ranging from 18°C (64°F) to 21°C (70°F).
Average temperatures in August
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in August
Historical weather for St. George in August
Browse day-by-day weather records for St. George spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
St. George historical weather extremes in August
The extremes listed below come from historical weather data collected in St. George from 1976 through 2025.
- The hottest August day on record in St. George reached 43°C (109°F) (August 16, 2020).
- The lowest overnight temperature recorded in August was 6°C (43°F) (August 19, 1978).
Best Places in the United States of America in August
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in August →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in St. George in August
Hot weather in August means keeping cool is the priority. Loose-fitting clothes in natural fabrics work best. Pack plenty of shorts, tank tops, and breathable shirts. Don't forget a hat, swimwear, and comfortable sandals. Pack a light rain jacket or compact umbrella for occasional showers.What To Do in St. George in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our St. George's climate page.
See the full St. George climate overview or explore weather in the United States of America.
