Monticello climate

Monticello Weather in August

NOAA 1991-2020 normals for Monticello 2E, 3.1 km from Monticello

Average highs run from 84°F on August 1 to 80°F on August 31, and lows from 55°F to 50°F. Normal precipitation for the month is 1.80 in over about 10 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 Monticello, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
82°F
Average low
53°F
Precipitation
1.80 in
Record high
95°FAug 2, 2026
Record low
39°FAug 20, 2021
Chance of a freeze
0%
Days of 90°F or more
1.1
Daylight
14 h 05 min to 13 h 01 min
Cloud cover
46%
Humidity
42%
Dew point
43°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 184°F55°F94°F 202653°F 202332%0%
Aug 284°F55°F95°F 202652°F 201932%0%
Aug 384°F55°F94°F 202650°F 201232%0%
Aug 484°F55°F95°F 202650°F 201232%0%
Aug 584°F54°F95°F 202649°F 201233%0%
Aug 683°F54°F92°F 202647°F 201733%0%
Aug 783°F54°F92°F 202650°F 201733%0%
Aug 883°F54°F93°F 202649°F 201533%0%
Aug 983°F54°F93°F 202649°F 201533%0%
Aug 1083°F54°F90°F 201249°F 201533%0%
Aug 1183°F54°F90°F 202548°F 202333%0%
Aug 1283°F54°F90°F 201247°F 201333%0%
Aug 1383°F54°F90°F 201250°F 201733%0%
Aug 1482°F54°F90°F 202548°F 201633%0%
Aug 1582°F53°F89°F 201948°F 201733%0%
Aug 1682°F53°F88°F 202046°F 202533%0%
Aug 1782°F53°F91°F 202047°F 202533%0%
Aug 1882°F53°F90°F 202048°F 202532%0%
Aug 1982°F53°F93°F 202047°F 201632%0%
Aug 2082°F53°F93°F 202039°F 202132%0%
Aug 2182°F52°F92°F 202040°F 202132%0%
Aug 2281°F52°F91°F 202550°F 201432%0%
Aug 2381°F52°F94°F 202048°F 201732%0%
Aug 2481°F52°F90°F 202046°F 201432%0%
Aug 2581°F52°F90°F 201145°F 201632%0%
Aug 2681°F51°F90°F 201141°F 201631%0%
Aug 2781°F51°F90°F 201140°F 201631%0%
Aug 2881°F51°F88°F 201744°F 201831%0%
Aug 2980°F51°F88°F 201947°F 201831%0%
Aug 3080°F50°F86°F 201244°F 202531%0%
Aug 3180°F50°F86°F 201746°F 202531%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Monticello, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (MDT).

August 1
sunrise 6:21 AM, sunset 8:26 PM
August 31
sunrise 6:47 AM, sunset 7:48 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00425805 (Monticello 2E), public domain. Records: NOAA GHCN-Daily, station USC00425807, 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.