Weather on May 13
Boulder, CO
55 Years of Data
Avg High
70°F
Avg Low
43°F
Warmest
1988
70°F avg
Coldest
1983
36°F avg
About This Date
May 13th in Boulder, CO typically brings pleasant spring weather, with average highs around 70°F and lows near 43°F — a 27°F daily swing. Over 55 years of records, the warmest May 13th was in 1988 (70°F average), while the coldest was 1983 (36°F) — a 34°F range across recorded history. Rain or other precipitation has occurred on about 27% of May 13th dates historically, with the wettest May 13th recording 4.83" of rain. The last decade has been 4.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.9°F warmer on this date compared to 20-30 years ago.
Planning for May 13th in Boulder, CO? Great weather for outdoor activities.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 86° | 54° | 70° | — | — |
| 2024 | 72° | 46° | 59° | — | — |
| 2023 | 61° | 45° | 53° | — | — |
| 2022 | 77° | 54° | 65° | — | — |
| 2021 | 73° | 39° | 56° | — | — |
| 2020 | 79° | 43° | 61° | — | — |
| 2019 | 77° | 45° | 61° | — | — |
| 2018 | 59° | 50° | 55° | — | — |
| 2017 | 83° | 43° | 63° | — | — |
| 2016 | 73° | 49° | 61° | — | — |
| 2015 | 66° | 46° | 56° | 0.13" | — |
| 2014 | 52° | 30° | 41° | — | — |
| 2013 | 84° | 55° | 70° | — | — |
| 2012 | 61° | 39° | 50° | 0.2" | — |
| 2011 | 64° | 41° | 53° | — | — |
| 2010 | 51° | 28° | 40° | 0.18" | — |
| 2009 | 66° | 40° | 53° | — | — |
| 2008 | 59° | 34° | 46° | 1.83" | — |
| 2007 | 81° | 51° | 66° | — | — |
| 2006 | 79° | 49° | 64° | — | — |
| 2005 | 63° | 39° | 51° | — | — |
| 2004 | 41° | 33° | 37° | 0.71" | — |
| 2003 | 75° | 44° | 60° | — | — |
| 2002 | 70° | 34° | 52° | — | — |
| 2001 | 84° | 50° | 67° | — | — |
| 2000 | 62° | 28° | 45° | — | — |
| 1999 | 76° | 41° | 58° | — | — |
| 1998 | 84° | 43° | 63° | — | — |
| 1997 | 76° | 44° | 60° | — | — |
| 1996 | 82° | 43° | 62° | — | — |
| 1995 | 66° | 42° | 54° | — | — |
| 1994 | 74° | 50° | 62° | 0.2" | — |
| 1993 | 77° | 45° | 61° | 0.03" | — |
| 1992 | 76° | 42° | 59° | 0.03" | — |
| 1991 | 80° | 46° | 63° | — | — |
| 1990 | 74° | 41° | 57° | — | — |
| 1989 | 66° | 42° | 54° | 0.56" | — |
| 1988warmest | 89° | 52° | 70° | — | — |
| 1987 | 81° | 58° | 69° | — | — |
| 1986 | 75° | 37° | 56° | — | — |
| 1985 | 57° | 37° | 47° | 0.41" | — |
| 1984 | 80° | 52° | 66° | — | — |
| 1983coldest | 38° | 34° | 36° | 0.99" | — |
| 1982 | 52° | 34° | 43° | 4.83" | — |
| 1981 | 55° | 36° | 45° | 0.89" | — |
| 1980 | 60° | 39° | 50° | — | — |
| 1979 | 63° | 38° | 50° | 0.03" | — |
| 1978 | 81° | 38° | 59° | — | — |
| 1977 | 75° | 47° | 61° | — | — |
| 1976 | 74° | 39° | 56° | — | — |
| 1975 | 65° | 36° | 50° | 0.97" | — |
| 1974 | 83° | 54° | 68° | — | — |
| 1973 | 59° | 41° | 50° | — | — |
| 1972 | 62° | 40° | 51° | — | — |
| 1971 | 72° | 39° | 55° | — | — |
55 years of data from BOULDER MUNI AP