June is one of the warmer months of the year in Grand Junction, with average highs near 28.7°C and lows around 11.3°C (mean 20°C). It is one of the drier months, averaging 19 mm of rainfall and 33% relative humidity across the period.
June is one of the warmer months of the year in Grand Junction. Across 45 years of records, the warmest Junes in Grand Junction were 2012, 2021 and 2024 — when the month averaged 23°C — while the coldest was 1995 at 15.7°C. Typical June days reach 28.7°C with nights near 11.3°C. The long-term trend is warming, about 0.6°C per decade.
June is one of the drier months in Grand Junction, averaging 19 mm of rainfall. The wettest June on record was 1984 with 59 mm, while the driest was 2013 at 0 mm.
Relative humidity in Grand Junction during June averages 33%. The most humid June was 1995 at 48%, and the least humid was 2002 at 16%.
June receives about 7.8 kWh/m²/day of solar energy in Grand Junction. The sunniest June was 2012 at 8.7 kWh/m²/day, and the cloudiest was 2009 at 6.8.
Average wind speed in Grand Junction during June is 2.6 m/s. The windiest June was 2020 at 3.2 m/s, while the calmest was 1987 at 2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 19.3°C | 18.7°C | 20.1°C | 21.0°C | 21.4°C | +2.1°C |
| Avg High | 27.9°C | 27.4°C | 28.8°C | 29.9°C | 29.8°C | +1.9°C |
| Avg Low | 10.8°C | 10.1°C | 11.3°C | 12.1°C | 12.9°C | +2.1°C |
| Avg Rain | 22 mm | 22 mm | 18 mm | 12 mm | 21 mm | -1 mm |
June temperatures in Grand Junction have risen by about 2.9°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 0.7°C (1990) to a record high of 39.2°C (2021).
Rainfall in June is one of the drier months, averaging 19 mm, with a wettest year of 59 mm.
One of the best times to visit Grand Junction
June is one of the best times to visit Grand Junction. Expect days averaging 28.7°C and nights around 11.3°C (mean 20°C) — warmer than Grand Junction's yearly average — with low rainfall (19 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 30.9°C | 22.2°C | 13.5°C | 36.4°C | 9.3°C | 18 mm | 26% | 2.6 m/s | 8.1 |
| 2024 | 31.2°C | 23.0°C | 14.7°C | 35.7°C | 9.0°C | 38 mm | 38% | 2.6 m/s | 7.4 |
| 2023 | 26.1°C | 18.2°C | 10.2°C | 32.1°C | 7.2°C | 17 mm | 41% | 2.6 m/s | 7.4 |
| 2022 | 29.7°C | 21.2°C | 12.7°C | 36.1°C | 4.2°C | 13 mm | 32% | 2.7 m/s | 7.7 |
| 2021 | 31.6°C | 23.0°C | 14.4°C | 39.2°C | 7.9°C | 19 mm | 28% | 2.4 m/s | 7.7 |
| 2020 | 29.5°C | 20.8°C | 12.0°C | 35.3°C | 1.2°C | 20 mm | 29% | 3.2 m/s | 8 |
| 2019 | 26.6°C | 18.5°C | 10.4°C | 32.7°C | 3.3°C | 22 mm | 46% | 2.5 m/s | 7.6 |
| 2018 | 31.6°C | 22.6°C | 13.6°C | 37.0°C | 6.3°C | 4 mm | 19% | 3 m/s | 8.4 |
| 2017 | 31.5°C | 22.2°C | 13.0°C | 37.1°C | 4.9°C | 3 mm | 26% | 2.6 m/s | 8.5 |
| 2016 | 31.5°C | 22.6°C | 13.8°C | 37.3°C | 7.7°C | 10 mm | 34% | 2.3 m/s | 8 |
| 2015 | 29.6°C | 21.1°C | 12.6°C | 34.8°C | 6.8°C | 37 mm | 42% | 2.2 m/s | 7.8 |
| 2014 | 28.4°C | 19.6°C | 10.9°C | 33.8°C | 4.9°C | 3 mm | 29% | 2.7 m/s | 7.8 |
| 2013 | 31.5°C | 22.1°C | 12.7°C | 38.4°C | 3.6°C | 0 mm | 22% | 2.8 m/s | 8.4 |
| 2012 🔥 | 32.4°C | 23.0°C | 13.5°C | 36.7°C | 5.3°C | 1 mm | 17% | 3 m/s | 8.7 |
| 2011 | 27.7°C | 18.7°C | 9.7°C | 34.4°C | 5.6°C | 18 mm | 34% | 3 m/s | 8 |
| 2010 | 28.5°C | 19.8°C | 11.2°C | 34.2°C | 4.1°C | 20 mm | 37% | 2.8 m/s | 7.8 |
| 2009 | 25.0°C | 17.6°C | 10.1°C | 32.7°C | 5.1°C | 37 mm | 46% | 2.3 m/s | 6.8 |
| 2008 | 27.8°C | 18.7°C | 9.6°C | 33.2°C | 2.8°C | 19 mm | 33% | 2.4 m/s | 8 |
| 2007 | 29.9°C | 20.9°C | 11.8°C | 35.3°C | 2.1°C | 14 mm | 27% | 2.6 m/s | 8.2 |
| 2006 | 31.1°C | 22.0°C | 12.8°C | 35.5°C | 7.5°C | 10 mm | 25% | 2.5 m/s | 8 |
| 2005 | 26.0°C | 17.7°C | 9.3°C | 34.9°C | 3.2°C | 55 mm | 44% | 2.7 m/s | 7.5 |
| 2004 | 28.7°C | 20.1°C | 11.4°C | 33.8°C | 6.0°C | 16 mm | 32% | 2.5 m/s | 7.5 |
| 2003 | 28.3°C | 19.5°C | 10.8°C | 35.4°C | 6.6°C | 11 mm | 33% | 2.5 m/s | 7.8 |
| 2002 | 32.0°C | 22.9°C | 13.8°C | 36.3°C | 6.8°C | 2 mm | 16% | 2.9 m/s | 8.4 |
| 2001 | 29.7°C | 20.6°C | 11.5°C | 36.3°C | 1.6°C | 5 mm | 26% | 2.5 m/s | 8.2 |
| 2000 | 29.8°C | 20.9°C | 11.9°C | 34.0°C | 5.5°C | 15 mm | 27% | 2.6 m/s | 7.8 |
| 1999 | 27.4°C | 18.6°C | 9.9°C | 32.5°C | 2.3°C | 27 mm | 37% | 2.7 m/s | 7.9 |
| 1998 | 24.9°C | 16.5°C | 8.2°C | 35.0°C | 2.6°C | 27 mm | 39% | 2.8 m/s | 7.6 |
| 1997 | 27.8°C | 19.2°C | 10.6°C | 32.2°C | 6.5°C | 26 mm | 40% | 2.5 m/s | 7.8 |
| 1996 | 29.2°C | 20.4°C | 11.5°C | 33.0°C | 5.2°C | 29 mm | 33% | 2.5 m/s | 7.6 |
| 1995 ❄️ | 23.8°C | 15.7°C | 7.6°C | 30.0°C | 2.2°C | 50 mm | 48% | 2.4 m/s | 7.4 |
| 1994 | 30.7°C | 21.8°C | 12.8°C | 36.7°C | 8.2°C | 13 mm | 28% | 2.7 m/s | 8.2 |
| 1993 | 25.4°C | 16.8°C | 8.3°C | 32.8°C | 2.2°C | 13 mm | 42% | 2.7 m/s | 7.8 |
| 1992 | 26.8°C | 18.4°C | 10.0°C | 32.5°C | 3.8°C | 12 mm | 39% | 2.3 m/s | 7.6 |
| 1991 | 27.6°C | 18.8°C | 10.0°C | 31.9°C | 3.4°C | 16 mm | 33% | 2.8 m/s | 7.7 |
| 1990 | 30.5°C | 21.1°C | 11.7°C | 37.7°C | 0.7°C | 11 mm | 25% | 3 m/s | 8 |
| 1989 | 28.3°C | 19.5°C | 10.7°C | 35.8°C | 4.8°C | 8 mm | 27% | 2.5 m/s | 7.6 |
| 1988 | 29.9°C | 21.2°C | 12.5°C | 36.3°C | 4.3°C | 21 mm | 41% | 2.3 m/s | 7.5 |
| 1987 | 28.3°C | 19.9°C | 11.4°C | 32.6°C | 4.8°C | 14 mm | 37% | 2 m/s | 8 |
| 1986 | 28.7°C | 20.0°C | 11.4°C | 33.6°C | 6.4°C | 16 mm | 37% | 2.1 m/s | 7.5 |
| 1985 | 28.9°C | 20.0°C | 11.1°C | 33.1°C | 4.0°C | 12 mm | 33% | 2.2 m/s | 8 |
| 1984 🌧️ | 25.7°C | 17.6°C | 9.4°C | 34.0°C | 2.1°C | 59 mm | 44% | 2.4 m/s | 7 |
| 1983 | 24.1°C | 16.4°C | 8.6°C | 31.2°C | 2.2°C | 45 mm | 47% | 2.3 m/s | — |
| 1982 | 26.8°C | 18.2°C | 9.6°C | 34.1°C | 2.4°C | 10 mm | 32% | 2.7 m/s | — |
| 1981 | 30.0°C | 21.0°C | 12.1°C | 37.1°C | 1.9°C | 16 mm | 30% | 2.6 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 28.7°C with lows near 11.3°C (mean 20°C), based on 45 years of NASA POWER data.
June averages 19 mm of rainfall in Grand Junction, one of the drier months. The wettest on record was 59 mm in 1984.
The hottest June reached 39.2°C in 2021. The coldest dipped to 0.7°C in 1990.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 2.9°C. Daytime highs moved from 27.1°C to 29.9°C and overnight lows from 10.2°C to 13.1°C over the same span.
June is one of the warmer months of the year in Grand Junction and one of the drier months, so plan for around 28.7°C daytime highs and 11.3°C at night.
Not quite — June is the 10th coolest month in Grand Junction, averaging 20°C.
For June in Grand Junction, pack light layers you can adjust through the day, with typical highs of 28.7°C and lows of 11.3°C.
Relative humidity in June averages 33% — relatively dry.
Average wind speed in June is 2.6 m/s. The windiest June on record averaged 3.2 m/s (2020).
The wettest June on record was 1984 with 59 mm. On average, June sees 19 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Grand Junction behaves each June, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for June specifically, along with year-by-year records and how the month has changed over the decades.
