As of 05:11 MDT

Idaho Falls, ID weather in September

62°

Idaho Falls, Sunday, 9 August, 05:11

Mostly clear. Feels like 60°. High 96°, low 62°.

Pressure30.03 inHg

Wind6.2 mph S

Humidity57%

Visibility6.2 mi

Dew point45°

See detailed hourly forecast

In September, Idaho Falls, ID averages a high of 74.3° and a low of 48.3°. About 1.1 inches of precipitation fall over the month (5 wet days). The record high is 99.7° (2022) and the record low 22.5° (1965). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	81°	53.1°	12%	95.2° (2022)	39.9° (1965)
2	81°	54.1°	17%	93.6° (2007)	41.7° (2008)
3	81.1°	53.6°	10%	98.2° (2022)	40.8° (1961)
4	81°	52.9°	13%	96.8° (2022)	38.3° (1964)
5	80.2°	52.9°	12%	97.2° (2020)	39.7° (2014)
6	79°	52.2°	15%	97.9° (2022)	39.9° (2016)
7	79.3°	52°	15%	99.7° (2022)	38.1° (1992)
8	77.7°	52.5°	22%	92.1° (2021)	38.3° (2020)
9	77.7°	50.9°	18%	94.3° (2021)	33.1° (2020)
10	76.8°	50.4°	17%	88.7° (2021)	37.2° (2020)
11	75.4°	50.9°	20%	90° (1990)	41.2° (2007)
12	73.8°	49.5°	17%	90.7° (1990)	32.9° (2014)
13	74.8°	48.4°	13%	87.4° (2015)	36.1° (1974)
14	74.3°	48.6°	18%	92.1° (1990)	32° (1961)
15	74.3°	47.5°	15%	92.7° (2000)	33.3° (1970)
16	73.8°	48.4°	13%	90.1° (2000)	32.7° (1965)
17	73°	48.2°	17%	88.9° (2020)	30.9° (1965)
18	72.3°	47.5°	18%	88.3° (1979)	22.5° (1965)
19	71.1°	46.8°	25%	86° (2010)	24.4° (1965)
20	69.3°	45.7°	30%	85.1° (1962)	28° (1978)
21	68.5°	44.6°	22%	83.8° (1966)	29.3° (1983)
22	69.1°	43.5°	18%	85.3° (1966)	30.4° (1961)
23	70.3°	44.1°	10%	87.1° (1966)	32.5° (1961)
24	71.1°	44.6°	13%	88.3° (2001)	28.2° (1961)
25	71.2°	44.4°	10%	87.8° (2001)	28.6° (1970)
26	70.7°	45.3°	12%	85.5° (2010)	29.8° (1970)
27	70.9°	44.1°	17%	85.6° (2001)	32.5° (1970)
28	71.1°	44.2°	12%	88.2° (2024)	30.7° (1999)
29	70.3°	44.6°	17%	85.6° (1989)	25.7° (1985)
30	69.8°	43.9°	20%	85.3° (2011)	24.8° (1985)