Lemhi County climate

Lemhi County Weather in August

NOAA 1991-2020 normals for Salmon-Ksra, 25.9 km from Lemhi County

Average highs run from 88°F on August 1 to 80°F on August 31, and lows from 52°F to 45°F. Normal precipitation for the month is 0.60 in over about 5 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 Lemhi County, 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
49°F
Precipitation
0.60 in
Record high
102°FAug 14, 1992
Record low
29°FAug 25, 1992
Chance of a freeze
2%
Days of 90°F or more
9.1
Daylight
14 h 41 min to 13 h 17 min
Cloud cover
42%
Humidity
46%
Dew point
37°F
Wind
5.1 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 188°F52°F99°F 197342°F 197518%0%
Aug 288°F52°F99°F 200143°F 198217%0%
Aug 388°F52°F100°F 202442°F 198717%0%
Aug 488°F52°F100°F 197937°F 198017%0%
Aug 588°F51°F101°F 197940°F 198017%0%
Aug 688°F51°F100°F 199040°F 196917%0%
Aug 787°F51°F101°F 197040°F 196917%0%
Aug 887°F51°F98°F 198240°F 197417%0%
Aug 987°F51°F98°F 199639°F 200217%0%
Aug 1087°F50°F99°F 200340°F 201617%0%
Aug 1186°F50°F99°F 197240°F 197017%0%
Aug 1286°F50°F99°F 199644°F 198217%0%
Aug 1386°F50°F101°F 197337°F 198517%0%
Aug 1486°F49°F102°F 199240°F 198517%0%
Aug 1585°F49°F99°F 196941°F 197417%0%
Aug 1685°F49°F99°F 202340°F 197417%0%
Aug 1785°F49°F99°F 202339°F 200917%0%
Aug 1885°F48°F97°F 202037°F 197817%0%
Aug 1984°F48°F97°F 202038°F 199517%0%
Aug 2084°F48°F101°F 202539°F 197517%0%
Aug 2184°F48°F99°F 196939°F 197417%0%
Aug 2283°F47°F101°F 196939°F 198817%0%
Aug 2383°F47°F102°F 196938°F 196817%0%
Aug 2483°F47°F101°F 196934°F 199217%0%
Aug 2582°F47°F100°F 198129°F 199217%0%
Aug 2682°F46°F98°F 198131°F 199217%0%
Aug 2782°F46°F97°F 197135°F 197617%0%
Aug 2881°F46°F97°F 197136°F 196917%0%
Aug 2981°F45°F96°F 201236°F 197517%0%
Aug 3081°F45°F95°F 200536°F 197517%0%
Aug 3180°F45°F93°F 201334°F 197717%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Lemhi County, in percent, and of at least 0.1 inch of snowfall.051015201102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (MDT).

August 1
sunrise 6:21 AM, sunset 9:02 PM
August 31
sunrise 6:57 AM, sunset 8:14 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00108080 (Salmon-Ksra), public domain. Records: NOAA GHCN-Daily, station USC00108080, 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.