Weather on February 18
Boulder, CO
55 Years of Data
Avg High
49°F
Avg Low
24°F
Warmest
2016
55°F avg
Coldest
2006
-3°F avg
About This Date
February 18th in Boulder, CO typically brings chilly winter weather, with average highs around 49°F and lows near 24°F — a 25°F daily swing. Over 56 years of records, the warmest February 18th was in 2016 (55°F average), while the coldest was 2006 (-3°F) — a 58°F range across recorded history. Precipitation has occurred on 16% of recorded February 18th dates, with snow falling 13% of the time (heaviest snowfall: 3.6"). The last decade has been 5.7°F cooler on this date compared to 20-30 years ago.
The last decade has been 5.7°F cooler on this date compared to 20-30 years ago.
Planning for February 18th in Boulder, CO? Bring layers as temperatures can vary throughout the day.
Cooling Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 55° | 32° | 44° | — | — |
| 2025 | 12° | 3° | 8° | — | — |
| 2024 | 45° | 19° | 32° | — | — |
| 2023 | 54° | 34° | 44° | — | — |
| 2022 | 43° | 21° | 32° | — | — |
| 2021 | 32° | 14° | 23° | 0.03" | — |
| 2020 | 36° | 18° | 27° | — | — |
| 2019 | 19° | 10° | 15° | — | — |
| 2018 | 64° | 27° | 46° | — | — |
| 2017 | 64° | 35° | 50° | — | — |
| 2016warmest | 73° | 37° | 55° | — | — |
| 2015 | 49° | 14° | 31° | — | — |
| 2014 | 59° | 46° | 53° | — | — |
| 2013 | 48° | 19° | 34° | — | — |
| 2012 | 41° | 14° | 28° | 0.03" | 0.2" |
| 2011 | 54° | 24° | 39° | — | — |
| 2010 | 41° | 25° | 33° | 0.28" | 1.6" |
| 2009 | 50° | 30° | 40° | — | — |
| 2008 | 47° | 19° | 33° | — | — |
| 2007 | 60° | 27° | 43° | — | — |
| 2006coldest | 9° | -14° | -3° | 0.03" | 0.2" |
| 2005 | 40° | 18° | 29° | — | — |
| 2004 | 67° | 42° | 54° | — | — |
| 2003 | 46° | 29° | 37° | — | — |
| 2002 | 55° | 33° | 44° | — | — |
| 2001 | 55° | 25° | 40° | — | — |
| 2000 | 34° | 19° | 26° | 0.84" | 3.6" |
| 1999 | 47° | 24° | 35° | — | — |
| 1998 | 47° | 26° | 36° | — | — |
| 1997 | 59° | 34° | 46° | 0.56" | 0.1" |
| 1996 | 60° | 44° | 52° | — | — |
| 1995 | 54° | 34° | 44° | — | — |
| 1994 | 58° | 34° | 46° | — | — |
| 1993 | 55° | 3° | 29° | — | — |
| 1992 | 46° | 27° | 36° | — | — |
| 1991 | 44° | 24° | 34° | — | — |
| 1990 | 48° | 8° | 28° | — | — |
| 1989 | 41° | 18° | 29° | — | — |
| 1988 | 43° | 11° | 27° | — | — |
| 1987 | 38° | 28° | 33° | 0.1" | — |
| 1986 | 58° | 46° | 52° | — | — |
| 1985 | 48° | 19° | 34° | — | — |
| 1984 | 37° | 14° | 26° | 0.05" | 0.2" |
| 1983 | 58° | 35° | 46° | — | — |
| 1982 | 58° | 29° | 43° | — | — |
| 1981 | 65° | 32° | 48° | — | — |
| 1980 | 63° | 26° | 44° | — | — |
| 1979 | 55° | — | — | — | — |
| 1978 | 33° | 6° | 20° | — | — |
| 1977 | 60° | 42° | 51° | — | — |
| 1976 | 45° | 32° | 38° | — | — |
| 1975 | 35° | 10° | 23° | — | — |
| 1974 | 53° | 21° | 37° | 1.35" | 3.2" |
| 1973 | 48° | 20° | 34° | — | — |
| 1972 | 59° | 23° | 41° | — | — |
| 1971 | 49° | 35° | 42° | — | — |
56 years of data from BOULDER MUNI AP