Douglas County climate

Douglas County Weather in January

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

Average highs run from 45°F on January 1 to 45°F on January 31, and lows from 17°F to 18°F. Normal precipitation for the month is 0.55 in over about 4 wet days.

January 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.-40-20020406080151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

January at a glance

Average high
46°F
Average low
18°F
Precipitation
0.55 in
Snowfall
8.0 in
Record high
66°FJan 27, 2015
Record low
-28°FJan 16, 2024
Chance of a freeze
100%
Daylight
9 h 27 min to 10 h 11 min
Cloud cover
57%
Humidity
56%
Dew point
14°F
Wind
9.4 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
Jan 145°F17°F60°F 2026-21°F 201114%13%
Jan 245°F17°F54°F 2026-18°F 202214%13%
Jan 345°F17°F59°F 2025-12°F 201314%13%
Jan 445°F18°F59°F 2026-11°F 201514%12%
Jan 546°F18°F59°F 2012-15°F 201414%12%
Jan 646°F18°F58°F 2015-22°F 201714%12%
Jan 746°F18°F60°F 2022-13°F 201714%12%
Jan 846°F18°F55°F 2018-10°F 202514%12%
Jan 946°F18°F61°F 2018-9°F 202413%12%
Jan 1046°F18°F56°F 2012-19°F 201113%12%
Jan 1146°F18°F56°F 2014-20°F 201113%12%
Jan 1246°F18°F54°F 2022-12°F 202413%12%
Jan 1346°F18°F59°F 2021-12°F 201313%12%
Jan 1446°F18°F56°F 2023-14°F 202414%12%
Jan 1546°F18°F54°F 2026-23°F 202414%12%
Jan 1646°F18°F53°F 2015-28°F 202414%12%
Jan 1746°F18°F54°F 20221°F 201214%12%
Jan 1846°F18°F57°F 2018-11°F 202514%12%
Jan 1946°F18°F61°F 2018-22°F 202514%13%
Jan 2046°F18°F55°F 2021-23°F 202514%13%
Jan 2146°F18°F60°F 2013-24°F 202514%13%
Jan 2246°F18°F65°F 2013-7°F 201514%13%
Jan 2346°F18°F62°F 2013-11°F 202514%13%
Jan 2446°F18°F53°F 2015-3°F 202615%13%
Jan 2546°F18°F56°F 2012-13°F 202615%13%
Jan 2646°F18°F62°F 2015-14°F 202615%13%
Jan 2746°F18°F66°F 2015-12°F 202115%13%
Jan 2846°F18°F62°F 2011-15°F 201415%14%
Jan 2946°F18°F55°F 2011-12°F 201316%14%
Jan 3046°F18°F58°F 2024-15°F 202316%14%
Jan 3145°F18°F57°F 2017-18°F 202316%14%

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.051015201102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (MST).

January 1
sunrise 7:20 AM, sunset 4:47 PM
January 31
sunrise 7:08 AM, sunset 5:19 PM

Every day of January: 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.