Weather on March 18
Denver, CO
55 Years of Data
Avg High
55°F
Avg Low
30°F
Warmest
2009
59°F avg
Coldest
1983
24°F avg
About This Date
March 18th in Denver, CO typically brings cool spring weather, with average highs around 55°F and lows near 30°F — a 25°F daily swing. Over 56 years of records, the warmest March 18th was in 2009 (59°F average), while the coldest was 1983 (24°F) — a 35°F range across recorded history. Precipitation has occurred on 14% of recorded March 18th dates, with snow falling 9% of the time (heaviest snowfall: 10"). The last decade has been 4.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.1°F warmer on this date compared to 20-30 years ago.
Planning for March 18th in Denver, CO? Bring layers as temperatures can vary throughout the day.
Warming Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 72° | 47° | 59° | — | — |
| 2025 | 71° | 44° | 58° | — | — |
| 2024 | 46° | 29° | 37° | — | — |
| 2023 | 40° | 18° | 29° | — | — |
| 2022 | 34° | 20° | 27° | — | — |
| 2021 | 40° | 19° | 29° | — | — |
| 2020 | 53° | 33° | 43° | — | — |
| 2019 | 50° | 28° | 39° | — | — |
| 2018 | 62° | 29° | 45° | — | — |
| 2017 | 79° | 39° | 59° | — | — |
| 2016 | 46° | 20° | 33° | 1.17" | 4" |
| 2015 | 54° | 37° | 45° | — | — |
| 2014 | 69° | 29° | 49° | — | — |
| 2013 | 56° | 25° | 40° | — | — |
| 2012 | 74° | 43° | 58° | — | — |
| 2011 | 61° | 30° | 45° | 0.46" | 1" |
| 2010 | 70° | 32° | 51° | — | — |
| 2009warmest | 75° | 42° | 59° | — | — |
| 2008 | 39° | 23° | 31° | — | — |
| 2007 | 77° | 36° | 56° | — | — |
| 2006 | 47° | 23° | 35° | — | — |
| 2005 | 58° | — | — | — | — |
| 2004 | 68° | 38° | 53° | — | — |
| 2003 | 44° | 28° | 36° | 8.89" | 10" |
| 2002 | 39° | 15° | 27° | — | — |
| 2001 | 33° | 18° | 25° | — | — |
| 2000 | 50° | 26° | 38° | — | — |
| 1999 | 49° | 23° | 36° | — | — |
| 1998 | 56° | 30° | 43° | 0.15" | — |
| 1997 | 66° | 30° | 48° | — | — |
| 1996 | 39° | 24° | 32° | 0.43" | 1" |
| 1995 | 65° | 35° | 50° | — | — |
| 1994 | 68° | 36° | 52° | — | — |
| 1993 | 43° | 27° | 35° | — | — |
| 1992 | 49° | 34° | 41° | — | — |
| 1991 | 55° | 33° | 44° | — | — |
| 1990 | 52° | 25° | 38° | — | — |
| 1989 | 55° | 17° | 36° | — | — |
| 1988 | 32° | 17° | 25° | — | — |
| 1987 | 37° | 28° | 33° | — | — |
| 1986 | 47° | 30° | 38° | 0.23" | — |
| 1985 | 62° | 35° | 49° | — | — |
| 1984 | 55° | 26° | 41° | — | — |
| 1983coldest | 30° | 18° | 24° | — | — |
| 1982 | 31° | 59° | 45° | — | — |
| 1981 | 62° | 27° | 44° | 0.56" | — |
| 1980 | 47° | — | — | — | — |
| 1979 | 57° | 31° | 44° | 0.28" | 1" |
| 1978 | 69° | — | — | — | — |
| 1977 | 50° | 24° | 37° | — | — |
| 1976 | 65° | 36° | 50° | — | — |
| 1975 | 52° | 29° | 40° | — | — |
| 1974 | 72° | 38° | 55° | — | — |
| 1973 | 63° | 27° | 45° | — | — |
| 1972 | 68° | 34° | 51° | — | — |
| 1971 | 57° | 20° | 38° | — | — |
56 years of data from LAKEWOOD