Weather on May 12
Longmont, CO
55 Years of Data
About This Date
May 12th in Longmont, CO typically brings mild spring weather, with average highs around 68°F and lows near 40°F — a 28°F daily swing. Over 55 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 38% of recorded May 12th dates, with snow falling 4% of the time (heaviest snowfall: 5.1"). The last decade has been 3.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.4°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 |
|---|---|---|---|---|---|
| 2026 | 77° | 57° | 67° | — | — |
| 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" | — |
Longmont, CO Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Longmont, CO Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Longmont, CO Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Longmont, CO
Longmont, CO has no months that meet our "pleasant" threshold — every season has tradeoffs.