Douglas County climate

Douglas County Weather in August

NOAA 1991-2020 normals for Castle Rock, 9.2 km from Douglas County

Average highs run from 85°F on August 1 to 82°F on August 31, and lows from 57°F to 52°F. Normal precipitation for the month is 2.52 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 Douglas County, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
84°F
Average low
55°F
Precipitation
2.52 in
Record high
94°FAug 8, 2025
Record low
33°FAug 31, 2020
Chance of a freeze
0%
Days of 90°F or more
6.0
Daylight
14 h 12 min to 13 h 05 min
Cloud cover
50%
Humidity
47%
Dew point
44°F
Wind
7.4 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 185°F57°F89°F 202240°F 202032%0%
Aug 285°F57°F89°F 202242°F 201432%0%
Aug 385°F57°F87°F 202443°F 201632%0%
Aug 485°F56°F92°F 202046°F 201532%0%
Aug 585°F56°F88°F 202243°F 202132%0%
Aug 685°F56°F91°F 202541°F 202532%0%
Aug 785°F56°F93°F 202045°F 202132%0%
Aug 885°F56°F94°F 202541°F 202132%0%
Aug 985°F56°F89°F 202043°F 201232%0%
Aug 1084°F56°F86°F 202043°F 202032%0%
Aug 1184°F56°F88°F 202044°F 201832%0%
Aug 1284°F56°F88°F 202143°F 201232%0%
Aug 1384°F55°F91°F 202539°F 202032%0%
Aug 1484°F55°F92°F 202540°F 201232%0%
Aug 1584°F55°F92°F 202541°F 201231%0%
Aug 1684°F55°F88°F 201939°F 201231%0%
Aug 1784°F55°F89°F 201339°F 201231%0%
Aug 1884°F55°F92°F 202039°F 201631%0%
Aug 1983°F54°F89°F 201943°F 202231%
Aug 2083°F54°F91°F 201940°F 201630%
Aug 2183°F54°F87°F 201337°F 201230%
Aug 2283°F54°F90°F 202038°F 201530%
Aug 2383°F54°F90°F 201140°F 201530%
Aug 2483°F54°F89°F 202041°F 201629%
Aug 2583°F53°F90°F 201934°F 201629%
Aug 2682°F53°F88°F 202043°F 202228%
Aug 2782°F53°F85°F 201141°F 201628%
Aug 2882°F53°F89°F 202140°F 201428%
Aug 2982°F53°F89°F 201940°F 202327%
Aug 3082°F52°F88°F 202139°F 202427%
Aug 3182°F52°F86°F 202133°F 202026%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Douglas County, 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 6:00 AM, sunset 8:12 PM
August 31
sunrise 6:27 AM, sunset 7:32 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00051401 (Castle Rock), public domain. Records: NOAA GHCN-Daily, station USC00052494, 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.