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St. George August Weather

Averages and records for weather in St. George, Utah in the month of August.

Typical St. George August Weather 1991–2020
Average daily high	101.1 °F
Average daily low	71.9 °F
Average monthly precipitation	0.7 inches
Average monthly snow	none
Daily chance of precipitation	9.9%
Daily chance of snow	0%

St. George August Weather Records 1893–2024
Highest temperature	115 °F	August 17, 2020
Lowest temperature	40 °F	August 17, 1902
Highest daily low	85 °F	August 5, 2007
Lowest daily high	72 °F	August 30, 2000
Hottest average high temperature	106.3 °F	1969
Coldest average high temperature	92.9 °F	1941
Most daily precipitation	2.4 inches	August 31, 1909
Most monthly precipitation	3.0 inches	1925
Most daily snow	none	-
Most monthly snow	none	-

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°F)		Record (°F)
Day	High	Low	High	Low
August 1	102.2	73.6	112	43
August 2	102.1	73.5	112	54
August 3	102.0	73.4	111	54
August 4	102.0	73.3	112	52
August 5	101.9	73.3	113	52
August 6	101.8	73.2	110	50
August 7	101.8	73.1	110	52
August 8	101.7	72.9	110	50
August 9	101.6	72.8	111	50
August 10	101.5	72.7	110	51
August 11	101.5	72.6	112	47
August 12	101.4	72.6	111	40
August 13	101.2	72.4	110	46
August 14	101.1	72.3	109	50
August 15	101.0	72.2	110	48
August 16	100.9	72.0	111	47
August 17	100.8	71.8	115	40
August 18	100.6	71.6	113	48
August 19	100.5	71.4	112	46
August 20	100.4	71.2	111	47
August 21	100.3	71.1	109	50
August 22	100.1	70.9	110	44
August 23	99.9	70.8	110	45
August 24	99.8	70.6	110	45
August 25	99.6	70.3	109	47
August 26	99.4	70.1	108	47
August 27	99.1	69.8	108	49
August 28	98.8	69.6	109	48
August 29	98.6	69.3	107	48
August 30	98.3	69.0	109	43
August 31	98.0	68.6	109	45

Weather Station Details

Years	Station	Coordinates
1893–2024	St. George	location