Weather on December 18 at Theodore Roosevelt
Theodore Roosevelt National Park
Based on 55 years of data from Medora, ND
Elevation Note: Theodore Roosevelt sits at 2,600 ft. Expect temperatures 9°F cooler than the data shown below, which comes from Medora, ND at a lower elevation.
Planning Your Visit
December 18th in Theodore Roosevelt National Park (via Medora, ND) typically brings very cold winter weather, with average highs around 30°F and lows near 5°F — a 25°F daily swing. Over 55 years of records, the warmest December 18th was in 1979 (46°F average), while the coldest was 1989 (-12°F) — a 58°F range across recorded history. Precipitation has occurred on 13% of recorded December 18th dates, with snow falling 7% of the time (heaviest snowfall: 1.5"). The last decade has been 6.7°F cooler on this date compared to 20-30 years ago.
The last decade has been 6.7°F cooler on this date compared to 20-30 years ago.
Planning for December 18th in Theodore Roosevelt? Bundle up with warm layers and protect extremities from the cold.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 18°F | 0°F | 0.12" | -- |
| 2024 | 24°F | 4°F | 0" | 0" |
| 2023 | 39°F | 9°F | 0" | -- |
| 2022 | 1°F | -13°F | 0.1" | -- |
| 2021 | 16°F | -19°F | 0.08" | 0.8" |
| 2020 | 39°F | 12°F | 0" | 0" |
| 2019 | 36°F | 5°F | 0" | 0" |
| 2018 | 42°F | 16°F | 0" | 0" |
| 2017 | 41°F | 17°F | 0" | 0" |
| 2016 | 4°F | -26°F | 0" | -- |
| 2015 | 25°F | 5°F | 0" | -- |
| 2014 | 22°F | 16°F | 0" | 0" |
| 2013 | 34°F | 14°F | 0" | 0" |
| 2012 | 31°F | 2°F | 0" | 0" |
| 2011 | 51°F | 17°F | 0" | 0" |
| 2010 | 14°F | -4°F | 0" | 0" |
| 2009 | 39°F | 12°F | 0" | 0" |
| 2008 | 15°F | -20°F | 0" | 0" |
| 2007 | 43°F | 8°F | 0" | 0" |
| 2006 | 32°F | 6°F | 0" | 0" |
| 2005 | 7°F | -9°F | 0" | 0" |
| 2004 | 37°F | 12°F | 0" | -- |
| 2003 | 40°F | 23°F | -- | -- |
| 2002 | 32°F | 29°F | 0" | -- |
| 2001 | 35°F | 14°F | -- | -- |
| 2000 | 36°F | -14°F | 0" | 0" |
| 1999 | 43°F | 26°F | 0" | 0" |
| 1998 | 29°F | -4°F | -- | -- |
| 1997 | 43°F | 28°F | -- | -- |
| 1996 | 4°F | -8°F | 0" | 0" |
| 1995 | 25°F | 14°F | 0" | 0" |
| 1994 | 48°F | 21°F | 0" | 0" |
| 1993 | 36°F | 15°F | 0" | 0" |
| 1992 | 23°F | -3°F | 0" | 0" |
| 1991 | 42°F | 10°F | 0" | 0" |
| 1990 | 31°F | -10°F | 0.25" | 1" |
| 1989 | -2°F | -23°F | 0" | 0" |
| 1988 | 53°F | 30°F | 0" | 0" |
| 1987 | 38°F | 10°F | 0" | 0" |
| 1986 | 42°F | 13°F | 0" | 0" |
| 1985 | 24°F | -11°F | 0.33" | 1.5" |
| 1984 | 4°F | -25°F | 0" | 0" |
| 1983 | 0°F | -23°F | 0" | 0" |
| 1982 | 40°F | 29°F | 0.1" | 0" |
| 1981 | 12°F | -8°F | 0" | 0" |
| 1980 | 28°F | 1°F | 0" | 0" |
| 1979 | 61°F | 31°F | 0" | 0" |
| 1978 | 22°F | 1°F | 0" | 0" |
| 1977 | 22°F | 20°F | 0" | 0" |
| 1976 | 49°F | 13°F | 0" | 0" |
| 1975 | 39°F | -23°F | 0" | 0" |
| 1974 | 41°F | 13°F | 0" | 0" |
| 1973 | 13°F | 1°F | 0" | 0" |
| 1972 | 44°F | 16°F | 0" | 0" |
| 1971 | 38°F | 25°F | 0.05" | 0.1" |