Duncan Weather in December
Average highs run from 63°F on December 1 to 58°F on December 31, and lows from 26°F to 25°F. Normal precipitation for the month is 1.00 in over about 4 wet days.
December day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
December at a glance
- Average high
- 59°F
- Average low
- 25°F
- Precipitation
- 1.00 in
- Snowfall
- 0.5 in
- Record high
- 77°FDec 23, 2025
- Record low
- 17°FDec 29, 2003
- Chance of a freeze
- 100%
- Daylight
- 10 h 09 min to 10 h 02 min
- Cloud cover
- 38%
- Humidity
- 53%
- Dew point
- 23°F
- Wind
- 8.5 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.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Dec 1 | 63°F | 26°F | 75°F 2003 | 21°F 2006 | 12% | 1% |
| Dec 2 | 62°F | 26°F | 75°F 2021 | 23°F 2004 | 12% | 1% |
| Dec 3 | 62°F | 26°F | 75°F 2021 | 26°F 2006 | 12% | 1% |
| Dec 4 | 62°F | 26°F | 72°F 2012 | 24°F 1999 | 12% | 1% |
| Dec 5 | 61°F | 26°F | 73°F 2012 | 21°F 2005 | 12% | 1% |
| Dec 6 | 61°F | 26°F | 72°F 2010 | 18°F 2005 | 12% | 1% |
| Dec 7 | 61°F | 25°F | 73°F 2010 | 21°F 2005 | 12% | 1% |
| Dec 8 | 60°F | 25°F | 71°F 2000 | 24°F 2005 | 12% | 1% |
| Dec 9 | 60°F | 25°F | 71°F 2014 | 23°F 2011 | 13% | 1% |
| Dec 10 | 60°F | 25°F | 74°F 2014 | 24°F 2013 | 13% | 1% |
| Dec 11 | 60°F | 25°F | 74°F 2010 | 23°F 2012 | 13% | 1% |
| Dec 12 | 59°F | 25°F | 72°F 2014 | 23°F 1999 | 13% | 1% |
| Dec 13 | 59°F | 25°F | 72°F 2010 | 23°F 1999 | 13% | 1% |
| Dec 14 | 59°F | 25°F | 74°F 2025 | 23°F 2018 | 13% | 1% |
| Dec 15 | 59°F | 25°F | 72°F 2016 | 24°F 1999 | 13% | 1% |
| Dec 16 | 59°F | 25°F | 72°F 2006 | 20°F 2015 | 13% | 1% |
| Dec 17 | 58°F | 25°F | 70°F 2025 | 21°F 2015 | 13% | 1% |
| Dec 18 | 58°F | 25°F | 72°F 2024 | 24°F 2001 | 13% | 1% |
| Dec 19 | 58°F | 25°F | 71°F 2025 | 27°F 2007 | 13% | 1% |
| Dec 20 | 58°F | 25°F | 74°F 2025 | 20°F 2000 | 13% | 1% |
| Dec 21 | 58°F | 25°F | 75°F 2025 | 22°F 2006 | 13% | 1% |
| Dec 22 | 58°F | 24°F | 76°F 2025 | 24°F 2017 | 14% | 1% |
| Dec 23 | 58°F | 24°F | 77°F 2025 | 21°F 2007 | 14% | 1% |
| Dec 24 | 58°F | 24°F | 73°F 2005 | 21°F 1998 | 14% | 1% |
| Dec 25 | 58°F | 24°F | 72°F 2005 | 19°F 2004 | 14% | 1% |
| Dec 26 | 58°F | 24°F | 73°F 2005 | 19°F 2007 | 13% | 1% |
| Dec 27 | 58°F | 24°F | 71°F 2005 | 19°F 2008 | 13% | 1% |
| Dec 28 | 58°F | 24°F | 74°F 2020 | 19°F 2007 | 13% | 1% |
| Dec 29 | 58°F | 25°F | 72°F 2003 | 17°F 2003 | 13% | 1% |
| Dec 30 | 58°F | 25°F | 72°F 1998 | 21°F 2015 | 13% | 1% |
| Dec 31 | 58°F | 25°F | 70°F 1998 | 20°F 2010 | 13% | 1% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MST).
- December 1
- sunrise 7:01 AM, sunset 5:10 PM
- December 31
- sunrise 7:19 AM, sunset 5:21 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00022754 (Duncan), public domain. Records: NOAA GHCN-Daily, station USW00093084, 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.