Weather on March 9
Longmont, CO
55 Years of Data
Avg High
55°F
Avg Low
25°F
Warmest
2017
56°F avg
Coldest
1998
17°F avg
About This Date
March 9th in Longmont, CO typically brings cool spring weather, with average highs around 55°F and lows near 25°F — a 30°F daily swing. Over 56 years of records, the warmest March 9th was in 2017 (56°F average), while the coldest was 1998 (17°F) — a 39°F range across recorded history. Precipitation has occurred on 20% of recorded March 9th dates, with snow falling 9% of the time (heaviest snowfall: 5.1"). The last decade has been 4.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.2°F warmer on this date compared to 20-30 years ago.
Planning for March 9th in Longmont, CO? Bring layers as temperatures can vary throughout the day.
Warming Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 75° | 35° | 55° | — | — |
| 2025 | 55° | 22° | 38° | — | — |
| 2024 | 34° | 19° | 26° | 0.15" | — |
| 2023 | 38° | 26° | 32° | — | — |
| 2022 | 43° | 14° | 28° | 0.03" | 0.1" |
| 2021 | 70° | 35° | 52° | — | — |
| 2020 | 72° | 39° | 55° | 0.74" | — |
| 2019 | 50° | 25° | 37° | — | — |
| 2018 | 67° | 30° | 48° | — | — |
| 2017warmest | 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 | 71° | 31° | 51° | — | — |
| 2003 | 66° | 40° | 53° | — | — |
| 2002 | 30° | 14° | 22° | 0.18" | — |
| 2001 | 62° | 25° | 43° | — | — |
| 2000 | 60° | 25° | 42° | — | — |
| 1999 | 60° | 12° | 36° | — | — |
| 1998coldest | 32° | 1° | 17° | — | — |
| 1997 | 65° | 19° | 42° | — | — |
| 1996 | 48° | 11° | 29° | — | — |
| 1995 | 60° | 21° | 41° | — | — |
| 1994 | 30° | 5° | 18° | 0.66" | — |
| 1993 | 72° | 39° | 55° | — | — |
| 1992 | 53° | 24° | 39° | 5.18" | — |
| 1991 | 49° | 15° | 32° | — | — |
| 1990 | 47° | 21° | 34° | — | — |
| 1989 | 64° | 29° | 46° | — | — |
| 1988 | 54° | 21° | 37° | — | — |
| 1987 | 43° | 16° | 29° | 0.84" | 2" |
| 1986 | 64° | 35° | 50° | — | — |
| 1985 | 59° | 30° | 45° | — | — |
| 1984 | 54° | 18° | 36° | — | — |
| 1983 | 44° | 27° | 35° | 0.08" | — |
| 1982 | 52° | 25° | 38° | — | — |
| 1981 | 47° | 21° | 34° | — | — |
| 1980 | 41° | 26° | 34° | — | — |
| 1979 | 39° | 21° | 30° | 1.09" | 4" |
| 1978 | 65° | 33° | 49° | — | — |
| 1977 | 69° | 23° | 46° | — | — |
| 1976 | 47° | 21° | 34° | — | — |
| 1975 | 48° | 24° | 36° | — | — |
| 1974 | 67° | 26° | 46° | — | — |
| 1973 | 49° | 28° | 38° | — | — |
| 1972 | 65° | 23° | 44° | — | — |
| 1971 | 47° | 19° | 33° | — | — |
56 years of data from LONGMONT 2 ESE