Weather on May 13
Longmont, CO
55 Years of Data
Avg High
69°F
Avg Low
41°F
Warmest
2013
70°F avg
Coldest
2010
40°F avg
About This Date
May 13th in Longmont, CO typically brings mild spring weather, with average highs around 69°F and lows near 41°F — a 28°F daily swing. Over 54 years of records, the warmest May 13th was in 2013 (70°F average), while the coldest was 2010 (40°F) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 30% of May 13th dates historically, with the wettest May 13th recording 4.11" of rain. The last decade has been 5.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.0°F warmer on this date compared to 20-30 years ago.
Planning for May 13th in Longmont, CO? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 89° | 50° | 70° | — | — |
| 2024 | 68° | 41° | 55° | 0.56" | — |
| 2023 | 65° | 45° | 55° | 0.25" | — |
| 2022 | 71° | 47° | 59° | — | — |
| 2021 | 66° | 38° | 52° | — | — |
| 2020 | 65° | 42° | 53° | — | — |
| 2019 | 78° | 40° | 59° | — | — |
| 2018 | 58° | 49° | 53° | 1.09" | — |
| 2017 | 83° | 43° | 63° | — | — |
| 2016 | 73° | 49° | 61° | — | — |
| 2015 | 66° | 46° | 56° | 0.13" | — |
| 2014 | 52° | 30° | 41° | — | — |
| 2013warmest | 84° | 55° | 70° | — | — |
| 2012 | 61° | 39° | 50° | 0.2" | — |
| 2011 | 64° | 41° | 53° | — | — |
| 2010coldest | 51° | 28° | 40° | 0.18" | — |
| 2008 | 59° | 34° | 46° | 1.83" | — |
| 2007 | 81° | 51° | 66° | — | — |
| 2006 | 79° | 49° | 64° | — | — |
| 2005 | 63° | 39° | 51° | — | — |
| 2004 | 54° | 35° | 44° | 2.41" | — |
| 2003 | 74° | 40° | 57° | — | — |
| 2002 | 58° | 29° | 43° | — | — |
| 2001 | 85° | 51° | 68° | — | — |
| 2000 | 61° | 32° | 46° | — | — |
| 1999 | 72° | 30° | 51° | — | — |
| 1998 | 74° | 38° | 56° | — | — |
| 1997 | 73° | 37° | 55° | — | — |
| 1996 | 76° | 42° | 59° | — | — |
| 1995 | 69° | 43° | 56° | 0.13" | — |
| 1994 | 82° | 44° | 63° | — | — |
| 1993 | 72° | 42° | 57° | — | — |
| 1992 | 60° | 40° | 50° | — | — |
| 1991 | 71° | 40° | 55° | — | — |
| 1990 | 64° | 34° | 49° | — | — |
| 1989 | 77° | 42° | 60° | — | — |
| 1988 | 85° | 43° | 64° | — | — |
| 1987 | 80° | 49° | 64° | — | — |
| 1986 | 74° | 41° | 57° | — | — |
| 1985 | 57° | 37° | 47° | 0.05" | — |
| 1984 | 88° | 51° | 69° | — | — |
| 1983 | 68° | 29° | 48° | — | — |
| 1982 | 47° | 39° | 43° | 4.11" | — |
| 1981 | 70° | 36° | 53° | 0.79" | — |
| 1980 | 56° | 35° | 45° | 0.05" | — |
| 1979 | 63° | 38° | 50° | 0.03" | — |
| 1978 | 68° | 36° | 52° | — | — |
| 1977 | 82° | 52° | 67° | — | — |
| 1976 | 66° | 37° | 52° | — | — |
| 1975 | 60° | 37° | 49° | 1.07" | — |
| 1974 | 84° | 47° | 65° | — | — |
| 1973 | 63° | 39° | 51° | — | — |
| 1972 | 63° | 41° | 52° | 0.1" | — |
| 1971 | 65° | 37° | 51° | — | — |
54 years of data from LONGMONT 2 ESE