Big Horn County climate

Big Horn County Weather in August

NOAA 1991-2020 normals for Greybull, 6.3 km from Big Horn County

Average highs run from 92°F on August 1 to 84°F on August 31, and lows from 56°F to 47°F. Normal precipitation for the month is 0.33 in over about 3 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 Big Horn County, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
88°F
Average low
52°F
Precipitation
0.33 in
Record high
105°FAug 1, 2026
Record low
36°FAug 31, 2005
Chance of a freeze
1%
Days of 90°F or more
17.5
Daylight
14 h 38 min to 13 h 16 min
Cloud cover
45%
Humidity
37%
Dew point
42°F
Wind
6.9 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 192°F56°F105°F 202648°F 200912%0%
Aug 292°F56°F103°F 202450°F 200612%0%
Aug 392°F56°F105°F 200152°F 200612%0%
Aug 492°F56°F100°F 200144°F 201212%0%
Aug 591°F55°F98°F 200149°F 201212%0%
Aug 691°F55°F104°F 200147°F 201812%0%
Aug 791°F55°F101°F 200548°F 201712%0%
Aug 891°F55°F100°F 201253°F 200912%0%
Aug 991°F55°F100°F 200047°F 202512%0%
Aug 1090°F54°F103°F 202248°F 200212%0%
Aug 1190°F54°F104°F 201846°F 200412%0%
Aug 1290°F54°F105°F 201845°F 200412%0%
Aug 1390°F53°F103°F 200347°F 200412%0%
Aug 1489°F53°F102°F 200346°F 202312%0%
Aug 1589°F53°F105°F 200346°F 200512%0%
Aug 1689°F53°F100°F 200343°F 200912%0%
Aug 1788°F52°F102°F 202041°F 200212%0%
Aug 1888°F52°F100°F 200144°F 200912%0%
Aug 1988°F52°F101°F 202541°F 201512%0%
Aug 2087°F51°F101°F 202545°F 201612%0%
Aug 2187°F51°F101°F 202347°F 201612%0%
Aug 2287°F51°F98°F 200646°F 201512%0%
Aug 2386°F50°F98°F 200638°F 201513%0%
Aug 2486°F50°F98°F 202043°F 201513%0%
Aug 2586°F49°F99°F 200845°F 200513%0%
Aug 2685°F49°F100°F 200741°F 200413%0%
Aug 2785°F49°F99°F 201142°F 200513%0%
Aug 2885°F48°F98°F 201242°F 200413%0%
Aug 2984°F48°F100°F 201242°F 201813%0%
Aug 3084°F48°F98°F 199943°F 200513%0%
Aug 3184°F47°F98°F 202236°F 200513%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Big Horn County, 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 5:59 AM, sunset 8:37 PM
August 31
sunrise 6:34 AM, sunset 7:50 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00484080 (Greybull), public domain. Records: NOAA GHCN-Daily, station USW00024048, 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.