Duncan Weather in December
Average highs run from 58°F on December 1 to 51°F on December 31, and lows from 34°F to 29°F. Normal precipitation for the month is 2.04 in over about 6 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
- 54°F
- Average low
- 31°F
- Precipitation
- 2.04 in
- Snowfall
- 0.8 in
- Record high
- 88°FDec 24, 1955
- Record low
- -2°FDec 22, 1989
- Chance of a freeze
- 100%
- Daylight
- 10 h 01 min to 9 h 54 min
- Cloud cover
- 54%
- Humidity
- 72%
- Dew point
- 31°F
- Wind
- 10.1 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 | 58°F | 34°F | 81°F 1950 | 12°F 2006 | 20% | 1% |
| Dec 2 | 57°F | 34°F | 79°F 1951 | 12°F 1985 | 20% | 1% |
| Dec 3 | 57°F | 33°F | 78°F 1995 | 13°F 1985 | 20% | 1% |
| Dec 4 | 57°F | 33°F | 82°F 1954 | 18°F 1945 | 20% | 1% |
| Dec 5 | 56°F | 33°F | 79°F 1956 | 14°F 1950 | 20% | 1% |
| Dec 6 | 56°F | 32°F | 75°F 1946 | 7°F 1950 | 20% | 1% |
| Dec 7 | 56°F | 32°F | 82°F 1966 | 9°F 1950 | 20% | 1% |
| Dec 8 | 55°F | 32°F | 75°F 1952 | 7°F 2005 | 20% | 1% |
| Dec 9 | 55°F | 32°F | 73°F 2003 | 7°F 2005 | 20% | 1% |
| Dec 10 | 55°F | 32°F | 79°F 1939 | 13°F 1977 | 20% | 1% |
| Dec 11 | 54°F | 31°F | 78°F 1939 | 14°F 1978 | 20% | 1% |
| Dec 12 | 54°F | 31°F | 77°F 1973 | 8°F 1989 | 20% | 1% |
| Dec 13 | 54°F | 31°F | 74°F 1948 | 8°F 1989 | 20% | 1% |
| Dec 14 | 54°F | 31°F | 82°F 1948 | 7°F 1958 | 20% | 1% |
| Dec 15 | 53°F | 31°F | 76°F 2008 | 5°F 1943 | 20% | 1% |
| Dec 16 | 53°F | 30°F | 77°F 1948 | 8°F 1989 | 20% | 1% |
| Dec 17 | 53°F | 30°F | 75°F 2006 | 10°F 1964 | 20% | 1% |
| Dec 18 | 53°F | 30°F | 76°F 2002 | 9°F 1964 | 20% | 1% |
| Dec 19 | 53°F | 30°F | 73°F 1962 | 9°F 1983 | 20% | 1% |
| Dec 20 | 52°F | 30°F | 75°F 1978 | 10°F 1983 | 20% | 2% |
| Dec 21 | 52°F | 30°F | 77°F 2010 | 5°F 1983 | 20% | 2% |
| Dec 22 | 52°F | 30°F | 76°F 1969 | -2°F 1989 | 20% | 2% |
| Dec 23 | 52°F | 30°F | 74°F 1979 | 1°F 1983 | 20% | 2% |
| Dec 24 | 52°F | 29°F | 88°F 1955 | 6°F 1990 | 20% | 2% |
| Dec 25 | 52°F | 29°F | 85°F 1955 | 4°F 1983 | 20% | 2% |
| Dec 26 | 52°F | 29°F | 71°F 1954 | 4°F 1983 | 20% | 2% |
| Dec 27 | 52°F | 29°F | 77°F 1946 | 14°F 2010 | 19% | 2% |
| Dec 28 | 51°F | 29°F | 73°F 2005 | 17°F 1946 | 19% | 2% |
| Dec 29 | 51°F | 29°F | 82°F 1951 | 4°F 1983 | 19% | 2% |
| Dec 30 | 51°F | 29°F | 82°F 1951 | 5°F 1983 | 19% | 2% |
| Dec 31 | 51°F | 29°F | 84°F 1951 | 4°F 1968 | 19% | 2% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CST).
- December 1
- sunrise 7:20 AM, sunset 5:21 PM
- December 31
- sunrise 7:38 AM, sunset 5:32 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00342660 (Duncan), public domain. Records: NOAA GHCN-Daily, station USC00342660, 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.