Mellette County Weather in December
Average highs run from 42°F on December 1 to 35°F on December 31, and lows from 19°F to 13°F. Normal precipitation for the month is 0.44 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
- 38°F
- Average low
- 16°F
- Precipitation
- 0.44 in
- Snowfall
- 6.7 in
- Record high
- 71°FDec 2, 1998
- Record low
- -32°FDec 23, 1983
- Chance of a freeze
- 100%
- Daylight
- 9 h 11 min to 9 h 00 min
- Cloud cover
- 64%
- Humidity
- 72%
- Dew point
- 19°F
- Wind
- 12.1 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 | 42°F | 19°F | 67°F 1970 | -10°F 1985 | 14% | 12% |
| Dec 2 | 41°F | 19°F | 71°F 1998 | -15°F 1985 | 14% | 12% |
| Dec 3 | 41°F | 19°F | 70°F 1998 | -14°F 1985 | 14% | 13% |
| Dec 4 | 41°F | 18°F | 60°F 1975 | -6°F 2006 | 14% | 13% |
| Dec 5 | 40°F | 18°F | 67°F 1974 | -15°F 2005 | 14% | 13% |
| Dec 6 | 40°F | 18°F | 62°F 1988 | -20°F 1972 | 14% | 13% |
| Dec 7 | 40°F | 17°F | 60°F 1970 | -19°F 1972 | 14% | 13% |
| Dec 8 | 39°F | 17°F | 63°F 1987 | -13°F 1972 | 14% | 13% |
| Dec 9 | 39°F | 17°F | 61°F 2006 | -19°F 1977 | 14% | 13% |
| Dec 10 | 39°F | 17°F | 66°F 2006 | -18°F 1977 | 14% | 13% |
| Dec 11 | 38°F | 16°F | 66°F 1987 | -12°F 1972 | 13% | 13% |
| Dec 12 | 38°F | 16°F | 67°F 1968 | -19°F 2000 | 13% | 13% |
| Dec 13 | 38°F | 16°F | 58°F 1993 | -18°F 2000 | 13% | 13% |
| Dec 14 | 37°F | 16°F | 62°F 1988 | -15°F 1985 | 13% | 13% |
| Dec 15 | 37°F | 16°F | 68°F 1998 | -25°F 1989 | 13% | 13% |
| Dec 16 | 37°F | 15°F | 63°F 2002 | -22°F 1989 | 13% | 13% |
| Dec 17 | 37°F | 15°F | 59°F 1966 | -20°F 1975 | 13% | 13% |
| Dec 18 | 37°F | 15°F | 67°F 1976 | -20°F 1975 | 13% | 13% |
| Dec 19 | 36°F | 15°F | 68°F 1979 | -20°F 1989 | 13% | 13% |
| Dec 20 | 36°F | 15°F | 61°F 1979 | -19°F 1989 | 13% | 13% |
| Dec 21 | 36°F | 14°F | 63°F 1979 | -28°F 1983 | 13% | 13% |
| Dec 22 | 36°F | 14°F | 58°F 1979 | -30°F 1989 | 13% | 13% |
| Dec 23 | 36°F | 14°F | 60°F 1972 | -32°F 1983 | 13% | 13% |
| Dec 24 | 36°F | 14°F | 57°F 1971 | -25°F 1983 | 13% | 13% |
| Dec 25 | 36°F | 14°F | 52°F 1972 | -22°F 1983 | 13% | 13% |
| Dec 26 | 36°F | 14°F | 63°F 1979 | -23°F 1996 | 13% | 13% |
| Dec 27 | 35°F | 14°F | 55°F 1994 | -21°F 1996 | 13% | 13% |
| Dec 28 | 35°F | 13°F | 60°F 1980 | -10°F 1968 | 13% | 13% |
| Dec 29 | 35°F | 13°F | 58°F 2002 | -21°F 1990 | 13% | 13% |
| Dec 30 | 35°F | 13°F | 62°F 1999 | -29°F 1990 | 13% | 13% |
| Dec 31 | 35°F | 13°F | 55°F 2004 | -28°F 1967 | 13% | 12% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CST).
- December 1
- sunrise 7:57 AM, sunset 5:08 PM
- December 31
- sunrise 8:16 AM, sunset 5:16 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00391539 (Cedar Butte), public domain. Records: NOAA GHCN-Daily, station USC00395620, 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.