Weather on December 18
Sioux Falls, SD
55 Years of Data
Avg High
29°F
Avg Low
9°F
Warmest
1982
38°F avg
Coldest
1983
-16°F avg
About This Date
December 18th in Sioux Falls, SD typically brings very cold winter weather, with average highs around 29°F and lows near 9°F. Over 55 years of records, the warmest December 18th was in 1982 (38°F average), while the coldest was 1983 (-16°F) — a 54°F range across recorded history. Precipitation has occurred on 7% of recorded December 18th dates, with snow falling 11% of the time (heaviest snowfall: 3.6"). Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for December 18th in Sioux Falls, SD? Bundle up with warm layers and protect extremities from the cold.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 43° | 6° | 24° | 0.05" | 0.5" |
| 2024 | 26° | 14° | 20° | — | — |
| 2023 | 33° | 17° | 25° | — | — |
| 2022 | 11° | -3° | 4° | — | — |
| 2021 | 22° | 11° | 17° | — | — |
| 2020 | 41° | 19° | 30° | — | — |
| 2019 | 30° | 9° | 20° | — | — |
| 2018 | 44° | 28° | 36° | — | — |
| 2017 | 50° | 26° | 38° | — | — |
| 2016 | 8° | -27° | -9° | — | — |
| 2015 | 19° | 5° | 12° | — | — |
| 2014 | 27° | 13° | 20° | — | — |
| 2013 | 40° | 16° | 28° | — | — |
| 2012 | 31° | 9° | 20° | 0.43" | 3.6" |
| 2011 | 53° | 19° | 36° | — | — |
| 2010 | 15° | -2° | 7° | — | — |
| 2009 | 28° | 8° | 18° | — | — |
| 2008 | 20° | -7° | 6° | — | — |
| 2007 | 32° | 12° | 22° | — | — |
| 2006 | 38° | 15° | 26° | — | — |
| 2005 | 8° | -2° | 3° | — | — |
| 2004 | 37° | 0° | 19° | — | — |
| 2003 | 36° | 27° | 31° | — | — |
| 2002 | 37° | 33° | 35° | — | — |
| 2001 | 37° | 22° | 29° | — | — |
| 2000 | 13° | -3° | 5° | — | 0.1" |
| 1999 | 25° | 17° | 21° | — | — |
| 1998 | 38° | 19° | 28° | — | — |
| 1997 | 50° | 25° | 37° | — | — |
| 1996 | 2° | -5° | -2° | — | 0.1" |
| 1995 | 29° | 21° | 25° | — | — |
| 1994 | 23° | 1° | 12° | — | — |
| 1993 | 32° | 28° | 30° | 0.03" | 0.1" |
| 1992 | 29° | 20° | 24° | 0.23" | 0.8" |
| 1991 | 22° | 4° | 13° | — | — |
| 1990 | 22° | 0° | 11° | — | — |
| 1989 | 2° | -13° | -6° | — | — |
| 1988 | 50° | 22° | 36° | — | — |
| 1987 | 43° | 18° | 30° | — | — |
| 1986 | 44° | 11° | 27° | — | — |
| 1985 | 1° | -23° | -11° | — | — |
| 1984 | 22° | 3° | 12° | — | — |
| 1983coldest | -7° | -26° | -16° | — | — |
| 1982warmest | 48° | 29° | 38° | — | — |
| 1981 | 3° | -22° | -9° | — | — |
| 1980 | 34° | 5° | 19° | — | — |
| 1979 | 50° | 18° | 34° | — | — |
| 1978 | 33° | 20° | 26° | — | — |
| 1977 | 29° | 22° | 25° | — | — |
| 1976 | 52° | 21° | 36° | — | — |
| 1975 | 17° | -18° | 0° | — | — |
| 1974 | 31° | 10° | 20° | — | — |
| 1973 | 24° | 13° | 18° | — | — |
| 1972 | 33° | 11° | 22° | — | — |
| 1971 | 33° | 10° | 22° | — | — |
55 years of data from SIOUX FALLS