< Previous Month Next Month >

Idaho Falls August Weather

Averages and records for weather in Idaho Falls, Idaho in the month of August.

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
Daily chance of precipitation	15.7%

Idaho Falls August Weather Records 1948–2024
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 high temperature	90.5 °F	2022
Coldest average high temperature	75.5 °F	1968
Most daily precipitation	1.2 inches	August 29, 1971
Most monthly precipitation	2.6 inches	1968

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	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	99	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

Weather Station Details

Years	Station	Coordinates
1948–2024	Idaho Falls Fanning Field	location