June weather in Boulder, CO
The average temperature in Boulder in June is 66.8°F (51.1°F–82.5°F). Average precipitation: 1.95 inches.
June is a summer month in Boulder, and is warmer than the annual average of 51.5°F. Daily temperatures swing about 31.4°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 14h 48m. For travel, June is a comfortable month to visit.
Avg High
82.5°F
Avg Low
51.1°F
Precipitation
1.95 in
Daylight
14h 48m
June records in Boulder
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| June 1 | 89.1°F (1997) | 33.1°F (1917) | 2.33 in (1991) |
| June 2 | 91.9°F (2006) | 30.0°F (1907) | 1.53 in (1895) |
| June 3 | 95.0°F (1958) | 32.0°F (1951) | 1.35 in (1904) |
| June 4 | 93.9°F (1990) | 36.0°F (1937) | 3.40 in (1949) |
| June 5 | 95.0°F (1946) | 33.1°F (1937) | 1.56 in (2008) |
| June 6 | 95.0°F (2000) | 33.1°F (1983) | 1.37 in (1949) |
| June 7 | 95.0°F (2000) | 32.0°F (1917) | 0.70 in (1997) |
| June 8 | 98.1°F (1985) | 34.0°F (2007) | 2.00 in (1969) |
| June 9 | 95.0°F (2012) | 37.0°F (2014) | 3.13 in (1987) |
| June 10 | 97.0°F (1952) | 34.0°F (1906) | 2.03 in (1897) |
| June 11 | 99.0°F (2022) | 34.0°F (1906) | 2.11 in (1970) |
| June 12 | 100.0°F (1952) | 32.0°F (1935) | 2.12 in (1927) |
| June 13 | 99.0°F (2024) | 26.1°F (1935) | 0.55 in (2010) |
| June 14 | 100.0°F (2006) | 25.0°F (1935) | 0.90 in (1901) |
| June 15 | 100.0°F (1952) | 34.0°F (1935) | 1.28 in (1914) |
| June 16 | 99.0°F (2021) | 21.9°F (1935) | 2.65 in (1963) |
| June 17 | 99.0°F (2021) | 14.0°F (1935) | 1.74 in (1972) |
| June 18 | 98.1°F (1936) | 28.0°F (1935) | 1.89 in (1993) |
| June 19 | 97.0°F (1934) | 32.0°F (1935) | 0.84 in (1946) |
| June 20 | 98.1°F (2025) | 19.9°F (1935) | 1.11 in (2011) |
| June 21 | 99.0°F (2016) | 24.1°F (1935) | 0.60 in (1934) |
| June 22 | 98.1°F (1954) | 37.9°F (1935) | 1.10 in (1947) |
| June 23 | 104.0°F (1954) | 39.0°F (1935) | 0.79 in (1906) |
| June 24 | 100.9°F (2012) | 33.1°F (1935) | 0.99 in (2006) |
| June 25 | 100.9°F (2012) | 28.9°F (1935) | 0.98 in (1958) |
| June 26 | 100.9°F (1994) | 30.9°F (1935) | 1.16 in (1985) |
| June 27 | 100.0°F (1990) | 33.1°F (1935) | 0.70 in (2004) |
| June 28 | 98.1°F (2018) | 30.0°F (1935) | 1.35 in (1895) |
| June 29 | 99.0°F (1917) | 28.0°F (1935) | 2.23 in (1987) |
| June 30 | 99.0°F (1994) | 41.0°F (1935) | 0.40 in (1987) |