Granby climate

Granby Weather in August

NASA POWER reanalysis for the half-degree grid cell around Granby, 1991-2020; a grid cell is an area average and can differ from a thermometer in town by several degrees

Average highs run from 24°C on August 1 to 23°C on August 31, and lows from 15°C to 12°C. Normal precipitation for the month is 109 mm over about 16 wet days.

August day by day

The normal high and low for each date, in °C.

Normal daily high and low temperature at Granby, in °C, with the record for each date.010203040151015202530
  • Normal low
  • Normal high
  • Reanalysis extreme high
  • Reanalysis extreme low

August at a glance

Average high
24°C
Average low
14°C
Precipitation
109 mm
Reanalysis high
32°CAug 5, 2001
Reanalysis low
6°CAug 21, 2007
Daylight
14 h 44 min to 13 h 19 min
Cloud cover
59%
Humidity
82%
Dew point
15°C
Wind
6.8 km/h

Every day of the month

A wet day has at least 1 mm of precipitation in the reanalysis.

DateNormal highNormal lowReanalysis highReanalysis lowChance wet
Aug 124°C15°C30°C 200110°C 199859%
Aug 224°C15°C29°C 200710°C 199259%
Aug 324°C15°C30°C 200211°C 199959%
Aug 424°C15°C31°C 201410°C 199759%
Aug 524°C15°C32°C 20019°C 199458%
Aug 624°C15°C30°C 20187°C 199458%
Aug 724°C15°C28°C 19968°C 201058%
Aug 824°C15°C29°C 20189°C 200959%
Aug 924°C15°C30°C 20019°C 199959%
Aug 1024°C14°C29°C 20168°C 199958%
Aug 1124°C14°C29°C 20208°C 199657%
Aug 1224°C14°C28°C 20028°C 199255%
Aug 1324°C14°C29°C 20028°C 199253%
Aug 1424°C14°C30°C 200210°C 200754%
Aug 1524°C14°C29°C 200210°C 199654%
Aug 1624°C14°C29°C 20029°C 199454%
Aug 1723°C14°C29°C 19959°C 200052%
Aug 1823°C14°C29°C 20098°C 200551%
Aug 1923°C14°C29°C 20157°C 200750%
Aug 2023°C14°C28°C 20158°C 200749%
Aug 2123°C13°C27°C 20136°C 200749%
Aug 2223°C13°C26°C 20088°C 200449%
Aug 2323°C13°C27°C 20087°C 199448%
Aug 2423°C13°C27°C 20167°C 200448%
Aug 2523°C13°C28°C 20078°C 200447%
Aug 2623°C13°C28°C 19936°C 200646%
Aug 2723°C13°C28°C 19918°C 200947%
Aug 2823°C13°C28°C 20187°C 199548%
Aug 2923°C12°C30°C 20189°C 200345%
Aug 3022°C12°C29°C 19917°C 199644%
Aug 3123°C12°C30°C 20107°C 200645%

Chance of rain

The chance of at least 1 mm of precipitation in the reanalysis on each date at Granby, in percent.02040601102030
  • Chance of a wet day

Sunrise and sunset

Times for 2026, local time (EDT).

August 1
sunrise 5:35 AM, sunset 8:19 PM
August 31
sunrise 6:11 AM, sunset 7:30 PM

Every day of August: sun and moon

Other months

Sources

Cloud, humidity, wind and sunshine, and temperature and precipitation: 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.