Fremont County climate

Fremont County Weather in August

NOAA 1991-2020 normals for Riverton, 12.8 km from Fremont County

Average highs run from 89°F on August 1 to 81°F on August 31, and lows from 57°F to 50°F. Normal precipitation for the month is 0.42 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 Fremont County, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
86°F
Average low
54°F
Precipitation
0.42 in
Record high
101°FAug 2, 2026
Record low
36°FAug 31, 2020
Chance of a freeze
0%
Days of 90°F or more
9.8
Daylight
14 h 31 min to 13 h 13 min
Cloud cover
44%
Humidity
37%
Dew point
37°F
Wind
7.2 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 189°F57°F100°F 202647°F 200914%0%
Aug 289°F57°F101°F 202648°F 200614%0%
Aug 389°F57°F99°F 202450°F 202514%0%
Aug 488°F56°F95°F 202245°F 201215%0%
Aug 588°F56°F94°F 200149°F 201215%0%
Aug 688°F56°F99°F 200149°F 201815%0%
Aug 788°F56°F97°F 202647°F 199615%0%
Aug 888°F56°F99°F 202647°F 199615%0%
Aug 988°F56°F98°F 202647°F 202515%0%
Aug 1087°F55°F99°F 202245°F 200215%0%
Aug 1187°F55°F98°F 201847°F 200415%0%
Aug 1287°F55°F97°F 199647°F 201615%0%
Aug 1387°F55°F98°F 200743°F 200215%0%
Aug 1486°F54°F99°F 200342°F 200515%
Aug 1586°F54°F95°F 200045°F 200915%
Aug 1686°F54°F95°F 200243°F 200915%
Aug 1786°F54°F95°F 202041°F 200915%
Aug 1885°F53°F96°F 201044°F 201515%
Aug 1985°F53°F97°F 202543°F 199615%
Aug 2085°F53°F99°F 202539°F 201615%
Aug 2184°F53°F98°F 202644°F 202115%
Aug 2284°F52°F96°F 200947°F 202115%
Aug 2384°F52°F95°F 201139°F 201515%
Aug 2483°F52°F95°F 201142°F 201015%
Aug 2583°F52°F94°F 201547°F 199815%
Aug 2683°F51°F93°F 201044°F 200416%
Aug 2783°F51°F95°F 201144°F 202416%
Aug 2882°F51°F94°F 201243°F 200416%
Aug 2982°F50°F96°F 201243°F 202116%
Aug 3081°F50°F92°F 199942°F 202016%
Aug 3181°F50°F92°F 199636°F 202016%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Fremont 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 6:05 AM, sunset 8:36 PM
August 31
sunrise 6:38 AM, sunset 7:51 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00024061 (Riverton), public domain. Records: NOAA GHCN-Daily, station USW00024061, 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.