Duncan climate

Duncan Weather in August

NASA POWER reanalysis for the half-degree grid cell around Duncan, 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 21°C on August 31, and lows from 15°C to 13°C. Normal precipitation for the month is 31 mm over about 6 wet days.

August day by day

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

Normal daily high and low temperature at Duncan, 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
23°C
Average low
14°C
Precipitation
31 mm
Reanalysis high
35°CAug 9, 2018
Reanalysis low
9°CAug 31, 1999
Daylight
15 h 04 min to 13 h 28 min
Cloud cover
51%
Humidity
72%
Dew point
13°C
Wind
7.2 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°C31°C 200911°C 200817%
Aug 224°C15°C30°C 200911°C 200218%
Aug 324°C15°C29°C 199311°C 200818%
Aug 424°C15°C31°C 199311°C 200118%
Aug 524°C15°C32°C 201211°C 200218%
Aug 624°C15°C30°C 200811°C 199618%
Aug 724°C15°C30°C 201811°C 200218%
Aug 824°C15°C32°C 201811°C 199519%
Aug 924°C15°C35°C 201812°C 199219%
Aug 1024°C15°C31°C 201811°C 200819%
Aug 1124°C15°C33°C 201411°C 199519%
Aug 1224°C15°C29°C 201610°C 199519%
Aug 1323°C15°C30°C 199211°C 199518%
Aug 1423°C14°C31°C 200411°C 199519%
Aug 1523°C14°C32°C 201010°C 199518%
Aug 1623°C14°C32°C 201011°C 199517%
Aug 1723°C14°C30°C 201210°C 200017%
Aug 1823°C14°C28°C 200410°C 199518%
Aug 1923°C14°C31°C 201611°C 200019%
Aug 2023°C14°C29°C 201611°C 199619%
Aug 2123°C14°C28°C 201812°C 199619%
Aug 2223°C14°C28°C 201711°C 200920%
Aug 2322°C14°C27°C 200210°C 200322%
Aug 2422°C14°C27°C 200211°C 200122%
Aug 2522°C14°C30°C 201610°C 199322%
Aug 2622°C13°C30°C 201610°C 200822%
Aug 2722°C13°C28°C 200911°C 199324%
Aug 2822°C13°C30°C 201711°C 201023%
Aug 2922°C13°C28°C 200310°C 201024%
Aug 3021°C13°C28°C 200310°C 200824%
Aug 3121°C13°C28°C 19989°C 199926%

Chance of rain

The chance of at least 1 mm of precipitation in the reanalysis on each date at Duncan, in percent.01020301102030
  • Chance of a wet day

Sunrise and sunset

Times for 2026, local time (PDT).

August 1
sunrise 5:49 AM, sunset 8:53 PM
August 31
sunrise 6:31 AM, sunset 7:59 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.