Weather on March 9
Boulder, CO
55 Years of Data
Avg High
56°F
Avg Low
29°F
Warmest
2026
62°F avg
Coldest
2022
16°F avg
About This Date
March 9th in Boulder, CO typically brings cool spring weather, with average highs around 56°F and lows near 29°F — a 27°F daily swing. Over 56 years of records, the warmest March 9th was in 2026 (62°F average), while the coldest was 2022 (16°F) — a 46°F range across recorded history. Precipitation has occurred on 20% of recorded March 9th dates, with snow falling 20% of the time (heaviest snowfall: 16.1"). The last decade has been 5.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.4°F warmer on this date compared to 20-30 years ago.
Planning for March 9th in Boulder, CO? Bring layers as temperatures can vary throughout the day. Check road conditions if traveling, as snow is possible.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026warmest | 72° | 52° | 62° | — | — |
| 2025 | 70° | 32° | 51° | — | — |
| 2024 | 54° | 25° | 40° | — | — |
| 2023 | 54° | 28° | 41° | — | — |
| 2022coldest | 23° | 9° | 16° | — | — |
| 2021 | 68° | 36° | 52° | — | — |
| 2020 | 61° | 37° | 49° | — | — |
| 2019 | 50° | 32° | 41° | — | — |
| 2018 | 63° | 46° | 54° | — | — |
| 2017 | 71° | 41° | 56° | — | — |
| 2016 | 56° | 26° | 41° | — | — |
| 2015 | 57° | 27° | 42° | — | — |
| 2014 | 72° | 31° | 51° | — | — |
| 2013 | 41° | 30° | 36° | 1.09" | 5.1" |
| 2012 | 63° | 23° | 43° | — | — |
| 2011 | 53° | 24° | 39° | — | — |
| 2010 | 56° | 30° | 43° | — | — |
| 2009 | 57° | 28° | 43° | — | — |
| 2008 | 51° | 25° | 38° | — | — |
| 2007 | 63° | 30° | 46° | — | — |
| 2006 | 44° | 16° | 30° | 0.05" | 0.5" |
| 2005 | 66° | 30° | 48° | — | — |
| 2004 | 69° | 39° | 54° | — | — |
| 2003 | 63° | 37° | 50° | — | — |
| 2002 | 41° | 6° | 24° | 0.03" | 0.2" |
| 2001 | 62° | 33° | 48° | — | — |
| 2000 | 46° | 27° | 36° | 0.05" | 0.1" |
| 1999 | 52° | 22° | 37° | — | — |
| 1998 | 29° | 13° | 21° | 0.03" | 0.3" |
| 1997 | 60° | 28° | 44° | — | — |
| 1996 | 62° | 20° | 41° | — | — |
| 1995 | 68° | 37° | 53° | — | — |
| 1994 | 46° | 12° | 29° | 0.1" | 0.6" |
| 1993 | 59° | 40° | 49° | — | — |
| 1992 | 35° | 23° | 29° | 4.72" | 16.1" |
| 1991 | 60° | 21° | 41° | — | — |
| 1990 | 47° | 21° | 34° | — | — |
| 1989 | 77° | 43° | 60° | — | — |
| 1988 | 69° | 34° | 51° | — | — |
| 1987 | 29° | 16° | 22° | 0.2" | 0.9" |
| 1986 | 62° | 47° | 54° | — | — |
| 1985 | 56° | 30° | 43° | — | — |
| 1984 | 52° | 30° | 41° | 0.33" | 1.2" |
| 1983 | 44° | 26° | 35° | — | — |
| 1982 | 59° | 22° | 40° | — | — |
| 1981 | 50° | 28° | 39° | — | — |
| 1980 | 55° | 31° | 43° | — | — |
| 1979 | 34° | 25° | 29° | 0.71" | 2.5" |
| 1978 | 63° | 35° | 49° | — | — |
| 1977 | 68° | 32° | 50° | — | — |
| 1976 | 59° | 26° | 43° | — | — |
| 1975 | 43° | 28° | 35° | 0.2" | 0.5" |
| 1974 | 62° | 26° | 44° | — | — |
| 1973 | 47° | 22° | 34° | — | — |
| 1972 | 76° | 46° | 61° | — | — |
| 1971 | 50° | 23° | 37° | — | — |
56 years of data from BOULDER MUNI AP