American Falls city, Idaho

Official LSAD Designation: American Falls city • Census GEOID: 1601900 • Power County

Climate Normals & Weather Observations

30-year climate normals (1991–2020) and weather observations for American Falls city.

Reference Weather Station: AMERICAN FALLS, ID US (ID: USC00100218) • Located 2.8 miles from community center • Elevation: 1,374.6 m

Month	Average High (°F)	Average Low (°F)	Mean Temp (°F)	Precipitation (in)
January	34.5°	18.7°	26.6°	0.96"
February	39.1°	21.0°	30.0°	0.68"
March	51.8°	29.1°	40.5°	1.02"
April	60.0°	35.0°	47.5°	1.30"
May	71.3°	42.5°	56.9°	1.54"
June	79.1°	49.6°	64.4°	1.15"
July	90.4°	56.4°	73.4°	0.53"
August	87.7°	54.8°	71.2°	0.49"
September	76.9°	46.2°	61.5°	0.81"
October	61.4°	36.2°	48.8°	0.92"
November	46.5°	26.8°	36.6°	0.83"
December	34.5°	20.0°	27.2°	0.87"

2010–2025, completed calendar years only.

NOAA station AMERICAN FALLS, ID US (ID: USC00100218) • 2.8 miles from community center .

This is the same reference station used for monthly normals.

Show annual mean of daily highs and lows

Annual mean Annual mean of daily highs Annual mean of daily lows

Annual temperature data table (°F)

Annual station temperatures, 2010–2025. Unavailable means no reported value.
Year	Annual mean (°F)	Annual mean of daily highs (°F)	Annual mean of daily lows (°F)
2010	47.8	60.4	35.1
2011	47.3	59.7	34.9
2012	51.3	64.6	38.0
2013	48.1	61.1	35.0
2014	50.4	62.9	37.8
2015	50.8	63.3	38.3
2016	49.6	62.3	36.9
2017	48.7	60.9	36.5
2018	50.2	62.6	37.8
2019	48.3	60.0	36.5
2020	49.8	62.0	37.6
2021	51.3	63.4	39.1
2022	47.4	59.6	35.1
2023	47.5	58.5	36.5
2024	50.3	62.0	38.7
2025	Unavailable	Unavailable	Unavailable

Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.