Weather on March 11
Longmont, CO
55 Years of Data
Avg High
56°F
Avg Low
26°F
Warmest
1972
57°F avg
Coldest
2022
10°F avg
About This Date
March 11th in Longmont, CO typically brings cool spring weather, with average highs around 56°F and lows near 26°F — a 30°F daily swing. Over 56 years of records, the warmest March 11th was in 1972 (57°F average), while the coldest was 2022 (10°F) — a 47°F range across recorded history. Precipitation has occurred on 18% of recorded March 11th dates, with snow falling 9% of the time (heaviest snowfall: 7"). The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
Planning for March 11th in Longmont, CO? Bring layers as temperatures can vary throughout the day.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 55° | 29° | 42° | 0.25" | — |
| 2025 | 72° | 38° | 55° | — | — |
| 2024 | 67° | 24° | 45° | — | — |
| 2023 | 50° | 25° | 37° | — | — |
| 2022coldest | 20° | 1° | 10° | — | — |
| 2021 | 51° | 27° | 39° | — | — |
| 2020 | 64° | 35° | 50° | — | — |
| 2019 | 50° | 26° | 38° | — | — |
| 2018 | 55° | 20° | 37° | — | — |
| 2017 | 56° | 37° | 46° | — | — |
| 2016 | 71° | 35° | 53° | — | — |
| 2015 | 65° | 30° | 47° | — | — |
| 2014 | 69° | 30° | 50° | 0.03" | — |
| 2013 | 54° | 27° | 40° | — | — |
| 2012 | 66° | 34° | 50° | — | — |
| 2011 | 68° | 45° | 56° | — | — |
| 2010 | 49° | 25° | 37° | 0.13" | 0.5" |
| 2009 | 42° | 12° | 27° | — | — |
| 2008 | 68° | 28° | 48° | — | — |
| 2007 | 60° | 30° | 45° | 0.28" | — |
| 2006 | 37° | 21° | 29° | — | — |
| 2005 | 68° | 28° | 48° | — | — |
| 2004 | 57° | 23° | 40° | — | — |
| 2003 | 67° | 35° | 51° | — | — |
| 2002 | 59° | 19° | 39° | — | — |
| 2001 | 40° | 19° | 29° | 0.86" | 1" |
| 2000 | 43° | 15° | 29° | — | — |
| 1999 | 57° | 19° | 38° | — | — |
| 1998 | 51° | 3° | 27° | — | — |
| 1997 | 70° | 28° | 49° | — | — |
| 1996 | 70° | 29° | 49° | — | — |
| 1995 | 71° | 31° | 51° | — | — |
| 1994 | 63° | 30° | 46° | — | — |
| 1993 | 45° | 24° | 34° | 0.41" | — |
| 1992 | 35° | 5° | 20° | — | — |
| 1991 | 64° | 29° | 46° | — | — |
| 1990 | 62° | 24° | 43° | — | — |
| 1989 | 71° | 29° | 50° | — | — |
| 1988 | 39° | 26° | 33° | 0.43" | 0.5" |
| 1987 | 49° | 23° | 36° | — | — |
| 1986 | 56° | 28° | 42° | — | — |
| 1985 | 52° | 36° | 44° | — | — |
| 1984 | 51° | 19° | 35° | — | — |
| 1983 | 61° | 29° | 45° | — | — |
| 1982 | 65° | 27° | 46° | — | — |
| 1981 | 49° | 24° | 36° | — | — |
| 1980 | 60° | 25° | 42° | — | — |
| 1979 | 54° | 22° | 38° | — | — |
| 1978 | 49° | 22° | 35° | 0.05" | — |
| 1977 | 47° | 31° | 39° | 1.68" | 7" |
| 1976 | 63° | 31° | 47° | — | — |
| 1975 | 35° | 25° | 30° | — | — |
| 1974 | 34° | 26° | 30° | 0.41" | 2" |
| 1973 | 54° | 22° | 38° | — | — |
| 1972warmest | 77° | 38° | 57° | — | — |
| 1971 | 53° | 29° | 41° | — | — |
56 years of data from LONGMONT 2 ESE