July is one of the warmer months of the year in Grand Junction, with average highs near 32°C and lows around 15.7°C (mean 23.9°C). It is about average for rainfall, averaging 33 mm of rainfall and 36% relative humidity across the period.
July is one of the warmer months of the year in Grand Junction. Across 45 years of records, the warmest July in Grand Junction was 2003 — when the month averaged 26.7°C — while the coldest were 1983 and 1995 at 21.1°C. Typical July days reach 32°C with nights near 15.7°C. The long-term trend is warming, about 0.7°C per decade.
July is about average for rainfall in Grand Junction, averaging 33 mm of rainfall. The wettest July on record was 2006 with 60 mm, while the driest was 1994 at 6 mm.
Relative humidity in Grand Junction during July averages 36%. The most humid July was 2015 at 49%, and the least humid was 1994 at 23%.
July receives about 7.3 kWh/m²/day of solar energy in Grand Junction. The sunniest July was 2005 at 8 kWh/m²/day, and the cloudiest was 2012 at 6.6.
Average wind speed in Grand Junction during July is 2.1 m/s. The windiest July was 1993 at 2.7 m/s, while the calmest were 2008, 2017 and 2021, among others at 1.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 22.7°C | 22.7°C | 24.8°C | 24.2°C | 25.2°C | +2.5°C |
| Avg High | 30.8°C | 30.7°C | 33.3°C | 32.0°C | 33.4°C | +2.6°C |
| Avg Low | 14.6°C | 14.6°C | 16.4°C | 16.4°C | 17.1°C | +2.5°C |
| Avg Rain | 38 mm | 34 mm | 27 mm | 40 mm | 19 mm | -19 mm |
July temperatures in Grand Junction have risen by about 2.7°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 6.7°C (1995) to a record high of 39.5°C (2023).
Rainfall in July is about average for rainfall, averaging 33 mm, with a wettest year of 60 mm.
One of the best times to visit Grand Junction
July is one of the best times to visit Grand Junction. Expect days averaging 32°C and nights around 15.7°C (mean 23.9°C) — warmer than Grand Junction's yearly average — with moderate rainfall (33 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 | 33.3°C | 25.1°C | 17.0°C | 37.0°C | 14.0°C | 7 mm | 27% | 2.3 m/s | 7.3 |
| 2024 | 34.0°C | 25.1°C | 16.2°C | 38.3°C | 11.6°C | 14 mm | 27% | 2.1 m/s | 7.9 |
| 2023 | 34.9°C | 26.2°C | 17.4°C | 39.5°C | 12.0°C | 7 mm | 26% | 2.2 m/s | 7.8 |
| 2022 | 32.0°C | 24.7°C | 17.4°C | 38.1°C | 13.7°C | 30 mm | 41% | 1.9 m/s | 6.9 |
| 2021 | 33.0°C | 25.4°C | 17.9°C | 39.3°C | 15.4°C | 41 mm | 41% | 1.8 m/s | 7 |
| 2020 | 32.9°C | 24.7°C | 16.4°C | 37.3°C | 9.1°C | 15 mm | 28% | 2.3 m/s | 7.4 |
| 2019 | 32.3°C | 24.1°C | 15.9°C | 36.2°C | 11.2°C | 27 mm | 39% | 2.2 m/s | 7.6 |
| 2018 | 34.3°C | 26.2°C | 18.1°C | 37.5°C | 11.8°C | 17 mm | 32% | 2.2 m/s | 7.2 |
| 2017 | 32.4°C | 24.7°C | 16.9°C | 37.8°C | 11.7°C | 48 mm | 41% | 1.8 m/s | 6.8 |
| 2016 | 31.8°C | 23.9°C | 15.9°C | 37.3°C | 12.0°C | 34 mm | 34% | 2.2 m/s | 7.4 |
| 2015 | 29.1°C | 21.7°C | 14.3°C | 34.2°C | 10.0°C | 53 mm | 49% | 2.1 m/s | 7.1 |
| 2014 | 32.7°C | 24.8°C | 17.0°C | 37.1°C | 11.2°C | 37 mm | 36% | 2 m/s | 7.1 |
| 2013 | 32.6°C | 24.9°C | 17.3°C | 37.0°C | 14.3°C | 56 mm | 40% | 1.9 m/s | 7.2 |
| 2012 | 31.5°C | 24.2°C | 16.8°C | 36.5°C | 14.4°C | 40 mm | 42% | 2.2 m/s | 6.6 |
| 2011 | 31.0°C | 23.1°C | 15.2°C | 36.1°C | 11.9°C | 52 mm | 45% | 2 m/s | 7.1 |
| 2010 | 32.6°C | 24.4°C | 16.2°C | 37.5°C | 7.5°C | 34 mm | 36% | 2.2 m/s | 7.3 |
| 2009 | 32.3°C | 23.8°C | 15.3°C | 35.8°C | 12.4°C | 21 mm | 33% | 2.2 m/s | 7.4 |
| 2008 | 33.0°C | 24.8°C | 16.6°C | 35.8°C | 13.7°C | 24 mm | 32% | 1.8 m/s | 7.4 |
| 2007 | 33.8°C | 25.5°C | 17.2°C | 37.4°C | 15.2°C | 36 mm | 34% | 1.8 m/s | 7.2 |
| 2006 🌧️ | 31.8°C | 24.2°C | 16.5°C | 36.6°C | 11.6°C | 60 mm | 42% | 1.8 m/s | 6.7 |
| 2005 | 33.9°C | 24.9°C | 15.9°C | 39.2°C | 11.3°C | 21 mm | 30% | 1.9 m/s | 8 |
| 2004 | 32.2°C | 23.9°C | 15.6°C | 36.8°C | 12.3°C | 23 mm | 31% | 2.1 m/s | 7.3 |
| 2003 🔥 | 35.9°C | 26.7°C | 17.6°C | 38.9°C | 14.2°C | 14 mm | 24% | 2.2 m/s | 7.9 |
| 2002 | 34.8°C | 26.1°C | 17.4°C | 39.1°C | 13.8°C | 15 mm | 30% | 2 m/s | 7.2 |
| 2001 | 32.1°C | 23.8°C | 15.5°C | 37.7°C | 10.5°C | 42 mm | 36% | 2.3 m/s | 7.3 |
| 2000 | 33.4°C | 24.6°C | 15.9°C | 36.8°C | 11.2°C | 17 mm | 25% | 2.2 m/s | 7.6 |
| 1999 | 29.9°C | 22.5°C | 15.1°C | 34.9°C | 12.3°C | 55 mm | 47% | 2.2 m/s | 7 |
| 1998 | 31.8°C | 23.8°C | 15.9°C | 37.6°C | 12.1°C | 56 mm | 40% | 1.9 m/s | 7.6 |
| 1997 | 30.1°C | 21.8°C | 13.4°C | 36.3°C | 7.5°C | 31 mm | 36% | 2.1 m/s | 7.4 |
| 1996 | 32.0°C | 24.1°C | 16.2°C | 35.3°C | 13.5°C | 30 mm | 32% | 1.8 m/s | 7.5 |
| 1995 | 29.2°C | 21.1°C | 13.0°C | 35.7°C | 6.7°C | 38 mm | 42% | 2.1 m/s | 7.7 |
| 1994 | 33.2°C | 24.7°C | 16.1°C | 36.0°C | 7.1°C | 6 mm | 23% | 2.4 m/s | 7.4 |
| 1993 | 30.2°C | 21.4°C | 12.6°C | 35.6°C | 7.7°C | 8 mm | 30% | 2.7 m/s | 7.8 |
| 1992 | 28.9°C | 21.3°C | 13.8°C | 33.2°C | 7.0°C | 42 mm | 40% | 2.2 m/s | 7 |
| 1991 | 30.8°C | 22.7°C | 14.5°C | 35.5°C | 11.3°C | 38 mm | 38% | 1.9 m/s | 7 |
| 1990 | 31.3°C | 23.1°C | 15.0°C | 38.1°C | 11.1°C | 39 mm | 37% | 2.3 m/s | 7.2 |
| 1989 | 32.7°C | 24.1°C | 15.5°C | 39.1°C | 12.3°C | 35 mm | 29% | 2.1 m/s | 7.5 |
| 1988 | 33.0°C | 24.3°C | 15.6°C | 36.7°C | 12.9°C | 21 mm | 31% | 2.2 m/s | 7.1 |
| 1987 | 29.8°C | 21.5°C | 13.2°C | 35.5°C | 9.8°C | 45 mm | 37% | 2.6 m/s | 7.1 |
| 1986 | 29.0°C | 21.4°C | 13.9°C | 34.3°C | 9.6°C | 43 mm | 41% | 2.3 m/s | 7 |
| 1985 | 30.8°C | 22.9°C | 15.0°C | 37.0°C | 11.9°C | 51 mm | 40% | 1.8 m/s | 7.1 |
| 1984 | 30.5°C | 22.8°C | 15.1°C | 34.3°C | 13.0°C | 39 mm | 44% | 1.8 m/s | 7.3 |
| 1983 ❄️ | 28.8°C | 21.1°C | 13.4°C | 33.1°C | 7.5°C | 44 mm | 46% | 2.3 m/s | — |
| 1982 | 31.1°C | 22.7°C | 14.3°C | 36.1°C | 8.6°C | 23 mm | 32% | 2.4 m/s | — |
| 1981 | 31.5°C | 23.3°C | 15.2°C | 37.0°C | 11.7°C | 43 mm | 37% | 2.1 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 32°C with lows near 15.7°C (mean 23.9°C), based on 45 years of NASA POWER data.
July averages 33 mm of rainfall in Grand Junction, about average for rainfall. The wettest on record was 60 mm in 2006.
The hottest July reached 39.5°C in 2023. The coldest dipped to 6.7°C in 1995.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 2.7°C. Daytime highs moved from 30.5°C to 33.4°C and overnight lows from 14.6°C to 17.2°C over the same span.
July is one of the warmer months of the year in Grand Junction and about average for rainfall, so plan for around 32°C daytime highs and 15.7°C at night.
Not quite — July is the 12th coolest month in Grand Junction, averaging 23.9°C.
For July in Grand Junction, pack light, breathable clothing and sun protection, with typical highs of 32°C and lows of 15.7°C.
Relative humidity in July averages 36% — relatively dry.
Average wind speed in July is 2.1 m/s. The windiest July on record averaged 2.7 m/s (1993).
The wettest July on record was 2006 with 60 mm. On average, July sees 33 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 July, 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 July specifically, along with year-by-year records and how the month has changed over the decades.
