American Falls climate

American Falls Weather in August

NOAA 1991-2020 normals for American Falls 6 Ne, 8.2 km from American Falls

Average highs run from 87°F on August 1 to 81°F on August 31, and lows from 55°F to 49°F. Normal precipitation for the month is 0.48 in over about 4 wet days.

August day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at American Falls, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
85°F
Average low
53°F
Precipitation
0.48 in
Record high
104°FAug 2, 1969
Record low
30°FAug 25, 1992
Chance of a freeze
1%
Days of 90°F or more
10.9
Daylight
14 h 29 min to 13 h 12 min
Cloud cover
41%
Humidity
32%
Dew point
37°F
Wind
8.1 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Aug 187°F55°F103°F 202640°F 200111%0%
Aug 287°F55°F104°F 196943°F 199111%0%
Aug 387°F55°F102°F 202443°F 198111%0%
Aug 487°F55°F102°F 199440°F 198011%0%
Aug 587°F55°F99°F 199439°F 198011%0%
Aug 687°F55°F102°F 200143°F 195011%0%
Aug 787°F55°F103°F 199035°F 199611%0%
Aug 887°F55°F104°F 199040°F 199611%0%
Aug 987°F55°F99°F 197235°F 199511%0%
Aug 1087°F55°F102°F 201839°F 200211%0%
Aug 1186°F54°F100°F 199639°F 194712%0%
Aug 1286°F54°F101°F 194042°F 198512%0%
Aug 1386°F54°F99°F 200340°F 196612%0%
Aug 1486°F54°F102°F 200338°F 198512%0%
Aug 1586°F54°F101°F 200335°F 197412%0%
Aug 1685°F53°F97°F 195839°F 196812%0%
Aug 1785°F53°F100°F 202038°F 200912%0%
Aug 1885°F53°F98°F 194037°F 197812%0%
Aug 1985°F53°F99°F 199235°F 199512%0%
Aug 2085°F52°F100°F 202635°F 196412%0%
Aug 2184°F52°F101°F 202637°F 196613%0%
Aug 2284°F52°F98°F 199134°F 196613%0%
Aug 2384°F52°F97°F 196736°F 197813%0%
Aug 2483°F51°F98°F 198835°F 201013%0%
Aug 2583°F51°F98°F 198130°F 199213%0%
Aug 2683°F51°F100°F 201031°F 199213%0%
Aug 2783°F50°F96°F 201234°F 199313%0%
Aug 2882°F50°F97°F 201234°F 201813%0%
Aug 2982°F50°F97°F 199034°F 201813%0%
Aug 3082°F50°F98°F 195433°F 196514%0%
Aug 3181°F49°F98°F 202232°F 196914%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at American Falls, in percent, and of at least 0.1 inch of snowfall.0510151102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (MDT).

August 1
sunrise 6:23 AM, sunset 8:52 PM
August 31
sunrise 6:55 AM, sunset 8:07 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00100227 (American Falls 6 Ne), public domain. Records: NOAA GHCN-Daily, station USW00024156, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.