Weather on May 12
Longmont, CO
55 Years of Data
Avg High
67°F
Avg Low
40°F
Warmest
2022
71°F avg
Coldest
1983
35°F avg
About This Date
May 12th in Longmont, CO typically brings mild spring weather, with average highs around 67°F and lows near 40°F — a 27°F daily swing. Over 54 years of records, the warmest May 12th was in 2022 (71°F average), while the coldest was 1983 (35°F) — a 36°F range across recorded history. Precipitation has occurred on 39% of recorded May 12th dates, with snow falling 4% of the time (heaviest snowfall: 5.1"). The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
Planning for May 12th in Longmont, CO? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 87° | 50° | 69° | — | — |
| 2024 | 69° | 41° | 55° | — | — |
| 2023 | 52° | 47° | 49° | 4.98" | — |
| 2022warmest | 91° | 50° | 71° | — | — |
| 2021 | 43° | 34° | 38° | 0.08" | — |
| 2020 | 52° | 35° | 43° | 0.79" | — |
| 2019 | 66° | 34° | 50° | 0.05" | — |
| 2018 | 73° | 51° | 62° | 0.25" | — |
| 2017 | 78° | 41° | 60° | — | — |
| 2016 | 72° | 34° | 53° | — | — |
| 2015 | 69° | 33° | 51° | — | — |
| 2014 | 42° | 31° | 36° | 0.89" | 5.1" |
| 2013 | 77° | 47° | 62° | — | — |
| 2012 | 47° | 37° | 42° | 0.3" | — |
| 2011 | 48° | 37° | 43° | 1.04" | — |
| 2010 | 40° | 32° | 36° | 2.87" | 4.7" |
| 2008 | 79° | 53° | 66° | — | — |
| 2007 | 81° | 49° | 65° | — | — |
| 2006 | 80° | 39° | 60° | — | — |
| 2005 | 57° | 35° | 46° | 0.05" | — |
| 2004 | 85° | 40° | 62° | — | — |
| 2003 | 61° | 39° | 50° | — | — |
| 2002 | 62° | 35° | 49° | 1.14" | — |
| 2001 | 71° | 38° | 54° | — | — |
| 2000 | 71° | 39° | 55° | — | — |
| 1999 | 61° | 25° | 43° | — | — |
| 1998 | 73° | 36° | 54° | 0.1" | — |
| 1997 | 65° | 31° | 48° | 0.13" | — |
| 1996 | 80° | 51° | 66° | — | — |
| 1995 | 73° | 45° | 59° | — | — |
| 1994 | 81° | 43° | 62° | 0.08" | — |
| 1993 | 70° | 41° | 55° | — | — |
| 1992 | 83° | 39° | 61° | — | — |
| 1991 | 87° | 44° | 66° | — | — |
| 1990 | 56° | 32° | 44° | — | — |
| 1989 | 78° | 48° | 63° | — | — |
| 1988 | 77° | 39° | 58° | — | — |
| 1987 | 78° | 46° | 62° | — | — |
| 1986 | 69° | 42° | 56° | 0.18" | — |
| 1985 | 59° | 39° | 49° | 0.58" | — |
| 1984 | 83° | 48° | 65° | — | — |
| 1983coldest | 43° | 27° | 35° | — | — |
| 1982 | 51° | 40° | 45° | 1.42" | — |
| 1981 | 66° | 36° | 51° | — | — |
| 1980 | 44° | 36° | 40° | 0.99" | — |
| 1979 | 65° | 29° | 47° | — | — |
| 1978 | 73° | 37° | 55° | 0.13" | — |
| 1977 | 73° | 48° | 61° | — | — |
| 1976 | 79° | 40° | 59° | 0.08" | — |
| 1975 | 68° | 44° | 56° | — | — |
| 1974 | 80° | 36° | 58° | — | — |
| 1973 | 62° | 42° | 52° | — | — |
| 1972 | 60° | 37° | 49° | — | — |
| 1971 | 47° | 33° | 40° | 0.03" | — |
54 years of data from LONGMONT 2 ESE