Fort Sumner Weather in December
Average highs run from 58°F on December 1 to 54°F on December 31, and lows from 27°F to 24°F. Normal precipitation for the month is 0.62 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
- 55°F
- Average low
- 25°F
- Precipitation
- 0.62 in
- Snowfall
- 2.6 in
- Record high
- 77°FDec 1, 1995
- Record low
- -13°FDec 9, 1978
- Chance of a freeze
- 100%
- Daylight
- 10 h 02 min to 9 h 54 min
- Cloud cover
- 50%
- Humidity
- 57%
- Dew point
- 22°F
- Wind
- 10.7 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 | 27°F | 77°F 1995 | 10°F 1985 | 12% | 3% |
| Dec 2 | 57°F | 27°F | 76°F 2008 | 10°F 1985 | 12% | 3% |
| Dec 3 | 57°F | 27°F | 76°F 2010 | 11°F 1978 | 12% | 3% |
| Dec 4 | 57°F | 27°F | 77°F 1958 | 13°F 2009 | 12% | 3% |
| Dec 5 | 56°F | 26°F | 73°F 1946 | 10°F 1972 | 12% | 3% |
| Dec 6 | 56°F | 26°F | 71°F 1946 | 0°F 1950 | 12% | 3% |
| Dec 7 | 56°F | 26°F | 75°F 1970 | 6°F 2005 | 12% | 3% |
| Dec 8 | 56°F | 26°F | 71°F 1984 | -2°F 1978 | 12% | 3% |
| Dec 9 | 55°F | 26°F | 75°F 1996 | -13°F 1978 | 12% | 4% |
| Dec 10 | 55°F | 25°F | 73°F 1975 | 4°F 1978 | 12% | 4% |
| Dec 11 | 55°F | 25°F | 75°F 1995 | 9°F 1985 | 12% | 4% |
| Dec 12 | 55°F | 25°F | 72°F 1990 | -3°F 1961 | 12% | 4% |
| Dec 13 | 55°F | 25°F | 72°F 1995 | -1°F 1985 | 13% | 4% |
| Dec 14 | 55°F | 25°F | 74°F 2010 | 5°F 1985 | 13% | 4% |
| Dec 15 | 54°F | 25°F | 74°F 2010 | 0°F 1987 | 13% | 4% |
| Dec 16 | 54°F | 25°F | 75°F 1908 | 1°F 1987 | 13% | 4% |
| Dec 17 | 54°F | 24°F | 75°F 1980 | 5°F 2016 | 13% | 4% |
| Dec 18 | 54°F | 24°F | 74°F 1980 | -4°F 2016 | 13% | 5% |
| Dec 19 | 54°F | 24°F | 69°F 1997 | -10°F 1909 | 13% | 5% |
| Dec 20 | 54°F | 24°F | 74°F 2003 | -12°F 1909 | 13% | 5% |
| Dec 21 | 54°F | 24°F | 73°F 1981 | 0°F 1909 | 13% | 5% |
| Dec 22 | 54°F | 24°F | 73°F 1955 | -2°F 1990 | 13% | 5% |
| Dec 23 | 54°F | 24°F | 73°F 1955 | -6°F 1990 | 13% | 5% |
| Dec 24 | 54°F | 24°F | 73°F 1955 | -4°F 2004 | 13% | 5% |
| Dec 25 | 54°F | 24°F | 73°F 1955 | 3°F 1983 | 13% | 5% |
| Dec 26 | 54°F | 24°F | 72°F 2005 | 4°F 1962 | 13% | 5% |
| Dec 27 | 54°F | 24°F | 71°F 2006 | 1°F 1987 | 13% | 5% |
| Dec 28 | 54°F | 24°F | 70°F 1955 | 2°F 1966 | 13% | 5% |
| Dec 29 | 54°F | 24°F | 75°F 2017 | -3°F 1982 | 13% | 5% |
| Dec 30 | 54°F | 24°F | 74°F 1945 | -4°F 1958 | 13% | 5% |
| Dec 31 | 54°F | 24°F | 73°F 2008 | 3°F 2014 | 12% | 5% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MST).
- December 1
- sunrise 6:45 AM, sunset 4:47 PM
- December 31
- sunrise 7:03 AM, sunset 4:57 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00293294 (Ft Sumner), public domain. Records: NOAA GHCN-Daily, station USC00295617, 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.