Grand County climate

Grand County Weather in August

NOAA 1991-2020 normals for Moab Canyonland AP, 29.9 km from Grand County

Average highs run from 96°F on August 1 to 89°F on August 31, and lows from 67°F to 59°F. Normal precipitation for the month is 0.63 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 Grand County, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
93°F
Average low
63°F
Precipitation
0.63 in
Record high
106°FAug 2, 2026
Record low
43°FAug 31, 2005
Chance of a freeze
0%
Days of 90°F or more
24.3
Daylight
14 h 10 min to 13 h 04 min
Cloud cover
49%
Humidity
37%
Dew point
43°F
Wind
6.7 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 196°F67°F105°F 200856°F 199916%0%
Aug 295°F67°F106°F 202658°F 201116%0%
Aug 395°F67°F105°F 202656°F 200416%0%
Aug 495°F66°F104°F 202655°F 202316%0%
Aug 595°F66°F102°F 202460°F 200616%0%
Aug 695°F66°F103°F 202651°F 201116%0%
Aug 795°F66°F104°F 202648°F 201116%0%
Aug 894°F66°F104°F 202653°F 201016%0%
Aug 994°F65°F102°F 200052°F 201116%0%
Aug 1094°F65°F102°F 200353°F 201016%0%
Aug 1194°F65°F101°F 200353°F 200216%0%
Aug 1294°F65°F101°F 200254°F 199916%0%
Aug 1393°F65°F101°F 201854°F 201016%0%
Aug 1493°F64°F102°F 202554°F 200216%0%
Aug 1593°F64°F101°F 201555°F 200216%0%
Aug 1693°F64°F102°F 200254°F 200216%0%
Aug 1792°F63°F101°F 200250°F 200916%0%
Aug 1892°F63°F104°F 202055°F 200816%0%
Aug 1992°F63°F105°F 202052°F 200916%0%
Aug 2092°F63°F103°F 202050°F 201116%0%
Aug 2192°F62°F104°F 202549°F 201116%0%
Aug 2291°F62°F104°F 202055°F 200216%0%
Aug 2391°F62°F100°F 202057°F 200816%0%
Aug 2491°F61°F101°F 202050°F 201016%0%
Aug 2591°F61°F100°F 201954°F 200216%0%
Aug 2690°F61°F99°F 201752°F 200216%0%
Aug 2790°F60°F101°F 202049°F 200616%0%
Aug 2890°F60°F99°F 200152°F 200416%0%
Aug 2990°F60°F100°F 201746°F 200416%0%
Aug 3089°F59°F99°F 199849°F 200416%0%
Aug 3189°F59°F100°F 201943°F 200516%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Grand 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 6:19 AM, sunset 8:29 PM
August 31
sunrise 6:46 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 USW00093075 (Moab Canyonland AP), public domain. Records: NOAA GHCN-Daily, station USW00093075, 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.