Boulder County Weather in June
Average highs run from 78°F on June 1 to 87°F on June 30, and lows from 48°F to 55°F. Normal precipitation for the month is 1.95 in over about 10 wet days.
June day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
June at a glance
- Average high
- 83°F
- Average low
- 51°F
- Precipitation
- 1.95 in
- Record high
- 104°FJun 23, 1954
- Record low
- 20°FJun 20, 1935
- Chance of a freeze
- 1%
- Days of 90°F or more
- 5.9
- Daylight
- 14 h 51 min to 14 h 59 min
- Cloud cover
- 56%
- Humidity
- 49%
- Dew point
- 33°F
- Wind
- 6.3 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Jun 1 | 78°F | 48°F | 89°F 1997 | 33°F 1917 | 39% | |
| Jun 2 | 78°F | 48°F | 92°F 2006 | 30°F 1907 | 39% | |
| Jun 3 | 78°F | 48°F | 95°F 1958 | 32°F 1951 | 38% | |
| Jun 4 | 79°F | 48°F | 94°F 1990 | 36°F 1937 | 38% | |
| Jun 5 | 79°F | 49°F | 95°F 1946 | 33°F 1937 | 38% | |
| Jun 6 | 79°F | 49°F | 95°F 2000 | 33°F 1983 | 37% | |
| Jun 7 | 80°F | 49°F | 95°F 2000 | 32°F 1917 | 37% | |
| Jun 8 | 80°F | 49°F | 98°F 1985 | 34°F 2007 | 37% | |
| Jun 9 | 81°F | 50°F | 95°F 2012 | 37°F 2014 | 37% | |
| Jun 10 | 81°F | 50°F | 97°F 1952 | 34°F 1906 | 36% | |
| Jun 11 | 81°F | 50°F | 99°F 2022 | 34°F 1906 | 36% | |
| Jun 12 | 82°F | 50°F | 100°F 1952 | 32°F 1935 | 36% | |
| Jun 13 | 82°F | 51°F | 99°F 2024 | 26°F 1935 | 35% | |
| Jun 14 | 82°F | 51°F | 100°F 2006 | 25°F 1935 | 35% | |
| Jun 15 | 83°F | 51°F | 100°F 1952 | 34°F 1935 | 35% | |
| Jun 16 | 83°F | 51°F | 99°F 2021 | 22°F 1935 | 35% | |
| Jun 17 | 83°F | 52°F | 99°F 2021 | 34°F 1903 | 34% | |
| Jun 18 | 84°F | 52°F | 98°F 1936 | 28°F 1935 | 34% | 0% |
| Jun 19 | 84°F | 52°F | 97°F 1934 | 32°F 1935 | 34% | 0% |
| Jun 20 | 84°F | 52°F | 98°F 2025 | 20°F 1935 | 34% | 0% |
| Jun 21 | 84°F | 53°F | 99°F 2016 | 24°F 1935 | 33% | 0% |
| Jun 22 | 85°F | 53°F | 98°F 1954 | 38°F 1935 | 33% | 0% |
| Jun 23 | 85°F | 53°F | 104°F 1954 | 39°F 1935 | 33% | 0% |
| Jun 24 | 85°F | 53°F | 101°F 2012 | 33°F 1935 | 32% | 0% |
| Jun 25 | 86°F | 54°F | 101°F 2012 | 29°F 1935 | 32% | 0% |
| Jun 26 | 86°F | 54°F | 101°F 1994 | 31°F 1935 | 32% | 0% |
| Jun 27 | 86°F | 54°F | 100°F 1990 | 33°F 1935 | 32% | 0% |
| Jun 28 | 86°F | 54°F | 98°F 2018 | 30°F 1935 | 32% | 0% |
| Jun 29 | 86°F | 54°F | 99°F 1917 | 28°F 1935 | 32% | 0% |
| Jun 30 | 87°F | 55°F | 99°F 1994 | 41°F 1935 | 32% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- June 1
- sunrise 5:34 AM, sunset 8:25 PM
- June 30
- sunrise 5:36 AM, sunset 8:35 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00050848 (Boulder), public domain. Records: NOAA GHCN-Daily, station USC00050848, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.