Weather on May 1
Longmont, CO
55 Years of Data
Avg High
64°F
Avg Low
37°F
Warmest
1992
70°F avg
Coldest
1989
33°F avg
About This Date
May 1st in Longmont, CO typically brings mild spring weather, with average highs around 64°F and lows near 37°F — a 27°F daily swing. Over 54 years of records, the warmest May 1st was in 1992 (70°F average), while the coldest was 1989 (33°F) — a 37°F range across recorded history. Precipitation has occurred on 33% of recorded May 1st dates, with snow falling 9% of the time (heaviest snowfall: 10.7"). The last decade has been 6.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 6.7°F warmer on this date compared to 20-30 years ago.
Planning for May 1st in Longmont, CO? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 74° | 42° | 58° | 0.66" | — |
| 2024 | 75° | 40° | 57° | — | — |
| 2023 | 71° | 39° | 55° | — | — |
| 2022 | 70° | 36° | 53° | — | — |
| 2021 | 83° | 47° | 65° | — | — |
| 2020 | 82° | 49° | 65° | — | — |
| 2019 | 38° | 32° | 35° | 0.3" | — |
| 2018 | 74° | 46° | 60° | — | — |
| 2017 | 64° | 36° | 50° | — | — |
| 2016 | 42° | 31° | 36° | 0.25" | 1" |
| 2015 | 70° | 44° | 57° | 0.36" | — |
| 2014 | 63° | 30° | 46° | — | — |
| 2013 | 53° | 27° | 40° | 3.35" | 10.7" |
| 2012 | 78° | 53° | 66° | — | — |
| 2011 | 50° | 31° | 40° | — | — |
| 2010 | 58° | 30° | 44° | — | — |
| 2008 | 75° | 32° | 54° | 0.71" | 0.7" |
| 2007 | 72° | 47° | 59° | 0.36" | — |
| 2006 | 74° | 39° | 56° | 0.3" | — |
| 2005 | 39° | 30° | 35° | 0.15" | 0.2" |
| 2004 | 40° | 29° | 34° | 0.69" | — |
| 2003 | 56° | 36° | 46° | — | — |
| 2002 | 76° | 40° | 58° | — | — |
| 2001 | 78° | 43° | 60° | — | — |
| 2000 | 55° | 31° | 43° | — | — |
| 1999 | 46° | 32° | 39° | 3.15" | — |
| 1998 | 77° | 35° | 56° | — | — |
| 1997 | 62° | 34° | 48° | — | — |
| 1996 | 60° | 36° | 48° | 0.08" | — |
| 1995 | 56° | 31° | 43° | 0.25" | — |
| 1994 | 57° | 32° | 45° | — | — |
| 1993 | 70° | 35° | 52° | — | — |
| 1992warmest | 92° | 48° | 70° | — | — |
| 1991 | 54° | 32° | 43° | — | — |
| 1990 | 52° | 27° | 39° | — | — |
| 1989coldest | 49° | 18° | 33° | 0.03" | — |
| 1988 | 85° | 44° | 64° | — | — |
| 1987 | 80° | 45° | 62° | — | — |
| 1986 | 71° | 40° | 55° | — | — |
| 1985 | 72° | 37° | 54° | — | — |
| 1984 | 55° | 32° | 44° | — | — |
| 1983 | 62° | 36° | 49° | — | — |
| 1982 | 72° | 37° | 54° | — | — |
| 1981 | 73° | 42° | 58° | — | — |
| 1980 | 55° | 41° | 48° | 3.18" | — |
| 1979 | 64° | 39° | 52° | — | — |
| 1978 | 56° | 41° | 48° | 3.05" | — |
| 1977 | 79° | 47° | 63° | — | — |
| 1976 | 57° | 33° | 45° | — | — |
| 1975 | 54° | 29° | 41° | — | — |
| 1974 | 63° | 37° | 50° | — | — |
| 1973 | 44° | 31° | 37° | 3.07" | 4" |
| 1972 | 55° | 31° | 43° | 0.38" | — |
| 1971 | 68° | 38° | 53° | — | — |
54 years of data from LONGMONT 2 ESE