Weather on May 11
Boulder, CO
55 Years of Data
About This Date
May 11th in Boulder, CO typically brings mild spring weather, with average highs around 68°F and lows near 41°F — a 27°F daily swing. Over 56 years of records, the warmest May 11th was in 2004 (69°F average), while the coldest was 1979 (36°F) — a 33°F range across recorded history. Precipitation has occurred on 30% of recorded May 11th dates, with snow falling 4% of the time (heaviest snowfall: 1.7"). The last decade has been 2.3°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.3°F cooler on this date compared to 20-30 years ago.
Planning for May 11th in Boulder, CO? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 88° | 48° | 68° | — | — |
| 2025 | 82° | 48° | 65° | — | — |
| 2024 | 64° | 37° | 51° | — | — |
| 2023 | 52° | 46° | 49° | — | — |
| 2022 | 86° | 43° | 64° | — | — |
| 2021 | 45° | 34° | 39° | 0.13" | — |
| 2020 | 54° | 36° | 45° | — | — |
| 2019 | 63° | 34° | 48° | — | — |
| 2018 | 70° | 52° | 61° | — | — |
| 2017 | 64° | 45° | 54° | 1.32" | — |
| 2016 | 61° | 38° | 49° | — | — |
| 2015 | 58° | 30° | 44° | — | — |
| 2014 | 51° | 31° | 41° | 3.96" | 1.7" |
| 2013 | 67° | 42° | 54° | 0.05" | — |
| 2012 | 76° | 38° | 57° | 0.25" | — |
| 2011 | 68° | 33° | 51° | 3.07" | 0.2" |
| 2010 | 59° | 39° | 49° | 0.33" | — |
| 2009 | 66° | 48° | 57° | — | — |
| 2008 | 74° | 30° | 52° | — | — |
| 2007 | 81° | 45° | 63° | — | — |
| 2006 | 68° | 29° | 48° | — | — |
| 2005 | 65° | 44° | 54° | 3.12" | — |
| 2004warmest | 84° | 53° | 69° | — | — |
| 2003 | 58° | 31° | 44° | — | — |
| 2002 | 58° | 42° | 50° | 0.23" | — |
| 2001 | 76° | 49° | 62° | — | — |
| 2000 | 75° | 44° | 60° | — | — |
| 1999 | 59° | 30° | 45° | — | — |
| 1998 | 68° | 43° | 55° | — | — |
| 1997 | 74° | 48° | 61° | — | — |
| 1996 | 77° | 46° | 62° | — | — |
| 1995 | 68° | 39° | 54° | 0.08" | — |
| 1994 | 82° | 46° | 64° | 0.08" | — |
| 1993 | 66° | 36° | 51° | — | — |
| 1992 | 78° | 43° | 60° | — | — |
| 1991 | 84° | 50° | 67° | — | — |
| 1990 | 62° | 38° | 50° | 0.43" | — |
| 1989 | 80° | 47° | 63° | — | — |
| 1988 | 76° | 41° | 58° | — | — |
| 1987 | 75° | 48° | 62° | — | — |
| 1986 | 79° | 42° | 60° | — | — |
| 1985 | 72° | 48° | 60° | — | — |
| 1984 | 81° | 46° | 63° | — | — |
| 1983 | 41° | 38° | 39° | 0.05" | — |
| 1982 | 65° | 40° | 52° | 0.18" | — |
| 1981 | 64° | 36° | 50° | — | — |
| 1980 | 66° | 42° | 54° | 0.64" | — |
| 1979coldest | 44° | 29° | 36° | — | — |
| 1978 | 74° | 41° | 57° | — | — |
| 1977 | 77° | 38° | 57° | — | — |
| 1976 | 73° | 47° | 60° | — | — |
| 1975 | 73° | 48° | 61° | — | — |
| 1974 | 76° | 36° | 56° | — | — |
| 1973 | 65° | 37° | 51° | — | — |
| 1972 | 56° | 41° | 48° | 0.1" | — |
| 1971 | 47° | 40° | 43° | 0.94" | — |
Boulder, CO Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Boulder, CO Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Boulder, 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 Boulder, CO
Boulder, CO has no months that meet our "pleasant" threshold — every season has tradeoffs.