July is one of the warmer months of the year in Granby, with average highs near 24.2°C and lows around 14.7°C (mean 19.5°C). It is a relatively wet time of year, averaging 110 mm of rainfall and 82% relative humidity across the period.
July is one of the warmer months of the year in Granby. Across 45 years of records, the warmest July in Granby was 2020 — when the month averaged 21.8°C — while the coldest was 1992 at 16.3°C. Typical July days reach 24.2°C with nights near 14.7°C. The long-term trend is warming, about 0.5°C per decade.
July is a relatively wet time of year in Granby, averaging 110 mm of rainfall. The wettest July on record was 2023 with 218 mm, while the driest was 1991 at 62 mm.
Relative humidity in Granby during July averages 82%. The most humid July was 2009 at 85%, and the least humid was 2022 at 77%.
July receives about 5.7 kWh/m²/day of solar energy in Granby. The sunniest July was 2018 at 6.5 kWh/m²/day, and the cloudiest was 2009 at 4.9.
Average wind speed in Granby during July is 0.3 m/s. The windiest Julys were 2023, 2024 and 2025, among others at 0.3 m/s, while the calmest were 2023, 2024 and 2025, among others at 0.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 18.9°C | 19.1°C | 19.1°C | 20.1°C | 20.7°C | +1.8°C |
| Avg High | 23.8°C | 23.8°C | 23.8°C | 24.9°C | 25.5°C | +1.7°C |
| Avg Low | 13.9°C | 14.4°C | 14.4°C | 15.2°C | 15.9°C | +2°C |
| Avg Rain | 97 mm | 127 mm | 123 mm | 89 mm | 113 mm | +17 mm |
July temperatures in Granby have risen by about 1.8°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 5.5°C (1992) to a record high of 31.2°C (2005).
Rainfall in July is a relatively wet time of year, averaging 110 mm, with a wettest year of 218 mm.
One of the best times to visit Granby
July is one of the best times to visit Granby. Expect days averaging 24.2°C and nights around 14.7°C (mean 19.5°C) — warmer than Granby's yearly average — with higher rainfall (110 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 | 25.9°C | 20.8°C | 15.7°C | 30.0°C | 9.1°C | 87 mm | 80% | 0.3 m/s | 5.8 |
| 2024 | 26.1°C | 21.4°C | 16.6°C | 29.2°C | 11.6°C | 123 mm | 82% | 0.3 m/s | 5.9 |
| 2023 🌧️ | 25.6°C | 21.2°C | 16.7°C | 30.3°C | 11.1°C | 218 mm | 85% | 0.3 m/s | 5.1 |
| 2022 | 25.2°C | 20.0°C | 14.8°C | 29.3°C | 8.4°C | 69 mm | 77% | 0.3 m/s | 6.2 |
| 2021 | 23.5°C | 18.9°C | 14.2°C | 29.9°C | 9.3°C | 77 mm | 78% | 0.3 m/s | 5 |
| 2020 🔥 | 26.4°C | 21.8°C | 17.1°C | 30.9°C | 13.1°C | 106 mm | 83% | 0.3 m/s | 5.9 |
| 2019 | 26.0°C | 21.1°C | 16.1°C | 29.7°C | 11.0°C | 68 mm | 81% | 0.3 m/s | 6.2 |
| 2018 | 26.3°C | 21.2°C | 16.2°C | 31.2°C | 9.8°C | 88 mm | 80% | 0.3 m/s | 6.5 |
| 2017 | 23.6°C | 19.1°C | 14.5°C | 29.2°C | 8.7°C | 87 mm | 83% | 0.3 m/s | 5.5 |
| 2016 | 24.5°C | 19.5°C | 14.6°C | 29.4°C | 9.3°C | 89 mm | 81% | 0.3 m/s | 5.8 |
| 2015 | 24.1°C | 19.2°C | 14.3°C | 30.5°C | 7.9°C | 114 mm | 82% | 0.3 m/s | 5.7 |
| 2014 | 23.5°C | 19.1°C | 14.7°C | 29.4°C | 10.2°C | 105 mm | 82% | 0.3 m/s | 5.5 |
| 2013 | 25.2°C | 20.3°C | 15.3°C | 29.5°C | 7.7°C | 84 mm | 82% | 0.3 m/s | 6 |
| 2012 | 24.9°C | 19.8°C | 14.7°C | 30.6°C | 9.8°C | 80 mm | 80% | 0.3 m/s | 6.4 |
| 2011 | 25.4°C | 20.5°C | 15.7°C | 30.6°C | 11.7°C | 82 mm | 82% | 0.3 m/s | 6.2 |
| 2010 | 25.5°C | 20.9°C | 16.2°C | 31.1°C | 9.4°C | 92 mm | 81% | 0.3 m/s | 5.9 |
| 2009 | 22.5°C | 18.1°C | 13.6°C | 27.2°C | 8.4°C | 149 mm | 85% | 0.3 m/s | 4.9 |
| 2008 | 24.2°C | 19.6°C | 15.0°C | 28.7°C | 9.7°C | 154 mm | 84% | 0.3 m/s | 5.4 |
| 2007 | 23.2°C | 18.4°C | 13.7°C | 27.7°C | 7.4°C | 114 mm | 83% | 0.3 m/s | 5.5 |
| 2006 | 25.2°C | 20.8°C | 16.3°C | 29.3°C | 11.0°C | 127 mm | 85% | 0.3 m/s | 5.7 |
| 2005 | 24.9°C | 19.9°C | 14.8°C | 31.2°C | 10.0°C | 136 mm | 83% | 0.3 m/s | 6.1 |
| 2004 | 24.1°C | 19.5°C | 14.8°C | 28.3°C | 9.7°C | 171 mm | 83% | 0.3 m/s | 5.3 |
| 2003 | 24.2°C | 19.6°C | 15.1°C | 28.1°C | 11.2°C | 88 mm | 83% | 0.3 m/s | 5.4 |
| 2002 | 24.0°C | 19.2°C | 14.4°C | 31.0°C | 9.1°C | 111 mm | 83% | 0.3 m/s | 5.9 |
| 2001 | 22.6°C | 17.8°C | 13.1°C | 29.4°C | 7.3°C | 98 mm | 81% | 0.3 m/s | 5.7 |
| 2000 | 22.8°C | 18.0°C | 13.1°C | 29.1°C | 8.7°C | 83 mm | 83% | 0.3 m/s | 5.5 |
| 1999 | 25.1°C | 20.3°C | 15.5°C | 30.0°C | 11.0°C | 125 mm | 81% | 0.3 m/s | 5.9 |
| 1998 | 23.8°C | 19.3°C | 14.7°C | 29.6°C | 9.9°C | 153 mm | 82% | 0.3 m/s | 5.7 |
| 1997 | 23.5°C | 18.6°C | 13.6°C | 28.4°C | 8.5°C | 103 mm | 81% | 0.3 m/s | 5.8 |
| 1996 | 22.9°C | 18.5°C | 14.1°C | 28.5°C | 10.1°C | 176 mm | 84% | 0.3 m/s | 5.1 |
| 1995 | 25.0°C | 20.2°C | 15.4°C | 29.7°C | 10.7°C | 142 mm | 82% | 0.3 m/s | 5.6 |
| 1994 | 24.9°C | 20.3°C | 15.8°C | 29.7°C | 10.9°C | 127 mm | 85% | 0.3 m/s | 5.5 |
| 1993 | 24.1°C | 19.5°C | 14.9°C | 29.8°C | 10.2°C | 132 mm | 83% | 0.3 m/s | 5.5 |
| 1992 ❄️ | 21.1°C | 16.3°C | 11.6°C | 25.2°C | 5.5°C | 125 mm | 83% | 0.3 m/s | 5.4 |
| 1991 | 23.5°C | 18.6°C | 13.8°C | 29.6°C | 7.6°C | 62 mm | 80% | 0.3 m/s | 6.1 |
| 1990 | 23.8°C | 19.0°C | 14.1°C | 28.5°C | 8.1°C | 129 mm | 82% | 0.3 m/s | 5.8 |
| 1989 | 24.1°C | 18.9°C | 13.7°C | 28.6°C | 9.0°C | 71 mm | 81% | 0.3 m/s | 6.3 |
| 1988 | 24.9°C | 20.0°C | 15.0°C | 30.6°C | 9.3°C | 81 mm | 82% | 0.3 m/s | 5.4 |
| 1987 | 24.4°C | 19.5°C | 14.6°C | 30.1°C | 7.5°C | 108 mm | 82% | 0.3 m/s | 5.7 |
| 1986 | 22.6°C | 17.8°C | 13.0°C | 28.7°C | 7.4°C | 115 mm | 83% | 0.3 m/s | 5.3 |
| 1985 | 23.0°C | 18.1°C | 13.2°C | 26.8°C | 8.5°C | 145 mm | 82% | 0.3 m/s | 5.9 |
| 1984 | 23.4°C | 18.8°C | 14.2°C | 27.5°C | 9.7°C | 100 mm | 82% | 0.3 m/s | 5 |
| 1983 | 23.9°C | 19.0°C | 14.0°C | 29.0°C | 7.7°C | 82 mm | 83% | 0.3 m/s | — |
| 1982 | 23.4°C | 18.3°C | 13.1°C | 28.4°C | 5.6°C | 75 mm | 79% | 0.3 m/s | — |
| 1981 | 24.1°C | 19.3°C | 14.5°C | 28.2°C | 9.8°C | 92 mm | 82% | 0.3 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 24.2°C with lows near 14.7°C (mean 19.5°C), based on 45 years of NASA POWER data.
July averages 110 mm of rainfall in Granby, a relatively wet time of year. The wettest on record was 218 mm in 2023.
The hottest July reached 31.2°C in 2005. The coldest dipped to 5.5°C in 1992.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 1.8°C. Daytime highs moved from 23.6°C to 25.3°C and overnight lows from 13.8°C to 15.6°C over the same span.
July is one of the warmer months of the year in Granby and a relatively wet time of year, so plan for around 24.2°C daytime highs and 14.7°C at night.
Not quite — July is the 12th coolest month in Granby, averaging 19.5°C.
For July in Granby, pack light layers you can adjust through the day, with typical highs of 24.2°C and lows of 14.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 82% — quite humid.
Average wind speed in July is 0.3 m/s. The windiest July on record averaged 0.3 m/s (1981).
The wettest July on record was 2023 with 218 mm. On average, July sees 110 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 Granby 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.
