Idaho Falls August Weather

Typical Idaho Falls August Weather 1991–2020
Average daily high	85.7 °F
Average daily low	47.8 °F
Average monthly precipitation	0.6 inches

Idaho Falls August Weather Records 1948–2023
Highest temperature	100 °F	August 7, 1983
Lowest temperature	28 °F	August 26, 1992
Highest daily low	71 °F	August 8, 1983
Lowest daily high	55 °F	August 19, 2021
Hottest average temperature	5.5 °F above average	2022
Coldest average temperature	-3.8 °F below average	1968
Most daily precipitation	1.2 inches	August 29, 1971
Most monthly precipitation	2.6 inches	1968

Day	Average (°F)		Record (°F)
	High	Low	High	Low
August 1	88.0	49.8	98	37
August 2	87.9	49.7	98	42
August 3	87.8	49.6	99	42
August 4	87.7	49.5	100	36
August 5	87.7	49.3	97	38
August 6	87.6	49.2	98	42
August 7	87.5	49.2	100	40
August 8	87.3	49.0	99	39
August 9	87.1	48.8	96	36
August 10	86.9	48.7	98	37
August 11	86.8	48.6	98	41
August 12	86.6	48.5	97	37
August 13	86.4	48.4	96	39
August 14	86.2	48.2	99	37
August 15	86.1	48.0	98	38
August 16	85.8	47.8	96	37
August 17	85.4	47.7	98	36
August 18	85.2	47.5	97	35
August 19	85.0	47.3	97	34
August 20	84.8	47.1	94	34
August 21	84.5	46.8	96	35
August 22	84.2	46.6	98	36
August 23	83.9	46.4	97	36
August 24	83.6	46.2	98	34
August 25	83.2	46.0	97	30
August 26	82.8	45.7	97	28
August 27	82.4	45.5	93	33
August 28	82.0	45.2	94	33
August 29	81.6	45.0	95	32
August 30	81.3	44.6	99	31
August 31	81.0	44.4	97	30