Weather on December 18
Sioux Falls, SD
55 Years of Data
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.
| 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° | — | — |
Sioux Falls, SD Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Sioux Falls, SD Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Sioux Falls, SD Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Sioux Falls, SD
Sioux Falls, SD has no months that meet our "pleasant" threshold — every season has tradeoffs.