Thermopolis climate

Thermopolis Weather in August

NOAA 1991-2020 normals for Thermopolis, 0.7 km from Thermopolis

Average highs run from 93°F on August 1 to 86°F on August 31, and lows from 58°F to 51°F. Normal precipitation for the month is 0.50 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 Thermopolis, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
90°F
Average low
55°F
Precipitation
0.50 in
Record high
106°FAug 23, 1903
Record low
23°FAug 25, 1910
Chance of a freeze
0%
Days of 90°F or more
19.1
Daylight
14 h 34 min to 13 h 14 min
Cloud cover
42%
Humidity
38%
Dew point
41°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 193°F58°F104°F 190038°F 195016%0%
Aug 293°F58°F105°F 202642°F 192816%0%
Aug 392°F58°F103°F 190242°F 193516%0%
Aug 492°F58°F102°F 193442°F 193716%0%
Aug 592°F58°F104°F 194143°F 193716%0%
Aug 692°F58°F100°F 194939°F 191716%0%
Aug 792°F57°F102°F 200140°F 191716%0%
Aug 892°F57°F100°F 193541°F 193915%0%
Aug 992°F57°F103°F 194040°F 196315%0%
Aug 1091°F57°F105°F 202236°F 193915%0%
Aug 1191°F57°F103°F 195738°F 193915%0%
Aug 1291°F56°F103°F 193838°F 193915%0%
Aug 1391°F56°F103°F 200335°F 196315%0%
Aug 1491°F56°F101°F 200338°F 193815%0%
Aug 1590°F56°F103°F 190932°F 193815%0%
Aug 1690°F55°F101°F 190340°F 191015%0%
Aug 1790°F55°F100°F 202038°F 191615%0%
Aug 1890°F55°F100°F 202039°F 195415%0%
Aug 1989°F54°F100°F 202533°F 192014%0%
Aug 2089°F54°F103°F 202534°F 193914%0%
Aug 2189°F54°F100°F 202537°F 193914%0%
Aug 2289°F54°F100°F 193834°F 192414%0%
Aug 2388°F53°F106°F 190334°F 189914%0%
Aug 2488°F53°F101°F 191735°F 189915%0%
Aug 2588°F53°F101°F 202023°F 191015%0%
Aug 2688°F52°F100°F 191327°F 191015%0%
Aug 2787°F52°F97°F 192237°F 199215%0%
Aug 2887°F52°F100°F 192435°F 193115%0%
Aug 2987°F52°F99°F 201225°F 192015%0%
Aug 3086°F51°F102°F 195429°F 191015%0%
Aug 3186°F51°F102°F 195425°F 192015%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Thermopolis, 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 6:02 AM, sunset 8:36 PM
August 31
sunrise 6:36 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 USC00488875 (Thermopolis), public domain. Records: NOAA GHCN-Daily, station USC00488875, 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.