July is one of the warmer months of the year in Saint-Jean-sur-Richelieu, with average highs near 25.6°C and lows around 15.6°C (mean 20.6°C). It is a relatively wet time of year, averaging 101 mm of rainfall and 79% relative humidity across the period.
July is one of the warmer months of the year in Saint-Jean-sur-Richelieu. Across 45 years of records, the warmest July in Saint-Jean-sur-Richelieu was 2020 — when the month averaged 23.5°C — while the coldest was 1992 at 17.5°C. Typical July days reach 25.6°C with nights near 15.6°C. The long-term trend is warming, about 0.5°C per decade.
July is a relatively wet time of year in Saint-Jean-sur-Richelieu, averaging 101 mm of rainfall. The wettest July on record was 2023 with 187 mm, while the driest was 1991 at 58 mm.
Relative humidity in Saint-Jean-sur-Richelieu during July averages 79%. The most humid July was 2009 at 85%, and the least humid was 2025 at 70%.
July receives about 5.7 kWh/m²/day of solar energy in Saint-Jean-sur-Richelieu. The sunniest July was 2018 at 6.5 kWh/m²/day, and the cloudiest was 2009 at 4.9.
Average wind speed in Saint-Jean-sur-Richelieu during July is 2.2 m/s. The windiest July was 1996 at 2.6 m/s, while the calmest was 2023 at 1.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 20.1°C | 20.1°C | 19.9°C | 21.2°C | 22.1°C | +2°C |
| Avg High | 25.4°C | 25.1°C | 24.6°C | 26.2°C | 27.1°C | +1.7°C |
| Avg Low | 14.8°C | 15.2°C | 15.2°C | 16.1°C | 17.0°C | +2.2°C |
| Avg Rain | 87 mm | 114 mm | 116 mm | 85 mm | 101 mm | +15 mm |
July temperatures in Saint-Jean-sur-Richelieu have risen by about 1.9°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 6.6°C (1982) to a record high of 33.5°C (2010).
Rainfall in July is a relatively wet time of year, averaging 101 mm, with a wettest year of 187 mm.
One of the best times to visit Saint-Jean-sur-Richelieu
July is one of the best times to visit Saint-Jean-sur-Richelieu. Expect days averaging 25.6°C and nights around 15.6°C (mean 20.6°C) — warmer than Saint-Jean-sur-Richelieu's yearly average — with higher rainfall (101 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 | 28.4°C | 22.8°C | 17.1°C | 33.3°C | 10.7°C | 70 mm | 70% | 2 m/s | 5.8 |
| 2024 | 27.4°C | 22.5°C | 17.5°C | 31.4°C | 13.0°C | 114 mm | 78% | 2 m/s | 5.9 |
| 2023 🌧️ | 26.2°C | 21.8°C | 17.4°C | 32.2°C | 10.7°C | 187 mm | 83% | 1.7 m/s | 5.1 |
| 2022 | 26.6°C | 21.2°C | 15.8°C | 31.4°C | 9.5°C | 67 mm | 73% | 2.3 m/s | 6.2 |
| 2021 | 25.4°C | 20.5°C | 15.7°C | 30.9°C | 10.8°C | 77 mm | 72% | 2.2 m/s | 5 |
| 2020 🔥 | 28.6°C | 23.5°C | 18.4°C | 33.5°C | 14.7°C | 94 mm | 75% | 2.2 m/s | 5.9 |
| 2019 | 27.4°C | 22.3°C | 17.2°C | 32.0°C | 12.3°C | 65 mm | 78% | 2 m/s | 6.2 |
| 2018 | 28.1°C | 22.6°C | 17.2°C | 32.9°C | 10.7°C | 80 mm | 75% | 2.2 m/s | 6.5 |
| 2017 | 24.2°C | 19.7°C | 15.2°C | 27.7°C | 9.7°C | 98 mm | 83% | 2.1 m/s | 5.5 |
| 2016 | 26.4°C | 21.0°C | 15.6°C | 32.2°C | 11.2°C | 86 mm | 77% | 2.2 m/s | 5.8 |
| 2015 | 25.4°C | 20.4°C | 15.3°C | 31.3°C | 9.0°C | 108 mm | 79% | 2.2 m/s | 5.7 |
| 2014 | 24.5°C | 19.8°C | 15.1°C | 30.4°C | 11.6°C | 105 mm | 81% | 2.4 m/s | 5.5 |
| 2013 | 26.0°C | 21.1°C | 16.2°C | 31.1°C | 9.4°C | 74 mm | 79% | 2 m/s | 6 |
| 2012 | 27.0°C | 21.4°C | 15.8°C | 32.4°C | 10.9°C | 72 mm | 73% | 1.9 m/s | 6.4 |
| 2011 | 26.3°C | 21.4°C | 16.6°C | 31.4°C | 13.1°C | 78 mm | 80% | 1.9 m/s | 6.2 |
| 2010 | 26.8°C | 22.0°C | 17.1°C | 33.5°C | 10.4°C | 85 mm | 79% | 2.1 m/s | 5.9 |
| 2009 | 23.2°C | 18.8°C | 14.4°C | 28.2°C | 9.0°C | 143 mm | 85% | 2.1 m/s | 4.9 |
| 2008 | 24.9°C | 20.3°C | 15.7°C | 30.1°C | 10.8°C | 145 mm | 84% | 2 m/s | 5.4 |
| 2007 | 24.0°C | 19.2°C | 14.5°C | 29.4°C | 8.2°C | 121 mm | 82% | 1.9 m/s | 5.5 |
| 2006 | 25.9°C | 21.4°C | 17.0°C | 29.8°C | 11.7°C | 120 mm | 84% | 2.2 m/s | 5.7 |
| 2005 | 25.8°C | 20.8°C | 15.7°C | 29.7°C | 10.4°C | 122 mm | 82% | 2 m/s | 6.1 |
| 2004 | 24.7°C | 20.1°C | 15.6°C | 29.6°C | 10.2°C | 157 mm | 82% | 2 m/s | 5.3 |
| 2003 | 25.6°C | 20.8°C | 15.9°C | 28.9°C | 12.2°C | 82 mm | 79% | 2.4 m/s | 5.4 |
| 2002 | 25.0°C | 20.1°C | 15.3°C | 31.4°C | 9.5°C | 103 mm | 81% | 2.5 m/s | 5.9 |
| 2001 | 23.8°C | 18.8°C | 13.9°C | 31.3°C | 8.1°C | 87 mm | 78% | 2.2 m/s | 5.7 |
| 2000 | 23.5°C | 18.7°C | 13.9°C | 27.6°C | 9.5°C | 81 mm | 82% | 2.1 m/s | 5.5 |
| 1999 | 27.2°C | 21.8°C | 16.5°C | 32.7°C | 11.4°C | 114 mm | 75% | 2.2 m/s | 5.9 |
| 1998 | 24.9°C | 20.2°C | 15.5°C | 30.0°C | 10.5°C | 145 mm | 81% | 2.3 m/s | 5.7 |
| 1997 | 24.9°C | 19.6°C | 14.4°C | 29.6°C | 9.5°C | 97 mm | 78% | 2.4 m/s | 5.8 |
| 1996 | 23.6°C | 19.1°C | 14.7°C | 27.0°C | 10.8°C | 142 mm | 83% | 2.6 m/s | 5.1 |
| 1995 | 26.9°C | 21.7°C | 16.4°C | 32.4°C | 11.4°C | 121 mm | 75% | 2.3 m/s | 5.6 |
| 1994 | 25.8°C | 21.0°C | 16.3°C | 30.3°C | 11.0°C | 105 mm | 83% | 2.2 m/s | 5.5 |
| 1993 | 25.1°C | 20.5°C | 15.8°C | 31.2°C | 10.9°C | 126 mm | 82% | 2.3 m/s | 5.5 |
| 1992 ❄️ | 22.4°C | 17.5°C | 12.5°C | 26.9°C | 6.9°C | 115 mm | 80% | 2.3 m/s | 5.4 |
| 1991 | 25.4°C | 20.0°C | 14.6°C | 31.9°C | 8.8°C | 58 mm | 75% | 2.3 m/s | 6.1 |
| 1990 | 24.5°C | 19.7°C | 14.9°C | 29.4°C | 8.8°C | 120 mm | 80% | 2 m/s | 5.8 |
| 1989 | 25.6°C | 20.1°C | 14.6°C | 31.4°C | 9.9°C | 61 mm | 77% | 1.9 m/s | 6.3 |
| 1988 | 26.7°C | 21.4°C | 16.1°C | 32.9°C | 10.2°C | 73 mm | 77% | 1.9 m/s | 5.4 |
| 1987 | 26.3°C | 20.9°C | 15.5°C | 32.9°C | 8.1°C | 109 mm | 77% | 2.2 m/s | 5.7 |
| 1986 | 23.8°C | 18.8°C | 13.8°C | 31.2°C | 8.2°C | 112 mm | 80% | 2.2 m/s | 5.3 |
| 1985 | 24.4°C | 19.2°C | 13.9°C | 29.8°C | 9.4°C | 122 mm | 79% | 2.3 m/s | 5.9 |
| 1984 | 24.9°C | 20.0°C | 15.2°C | 28.4°C | 9.9°C | 81 mm | 78% | 2.4 m/s | 5 |
| 1983 | 25.5°C | 20.1°C | 14.8°C | 30.2°C | 8.3°C | 75 mm | 80% | 2.4 m/s | — |
| 1982 | 25.4°C | 19.8°C | 14.2°C | 31.0°C | 6.6°C | 70 mm | 75% | 2.4 m/s | — |
| 1981 | 25.7°C | 20.6°C | 15.5°C | 29.7°C | 10.0°C | 79 mm | 78% | 2.2 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 25.6°C with lows near 15.6°C (mean 20.6°C), based on 45 years of NASA POWER data.
July averages 101 mm of rainfall in Saint-Jean-sur-Richelieu, a relatively wet time of year. The wettest on record was 187 mm in 2023.
The hottest July reached 33.5°C in 2010. The coldest dipped to 6.6°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 1.9°C. Daytime highs moved from 25.2°C to 26.8°C and overnight lows from 14.7°C to 16.7°C over the same span.
July is one of the warmer months of the year in Saint-Jean-sur-Richelieu and a relatively wet time of year, so plan for around 25.6°C daytime highs and 15.6°C at night.
Not quite — July is the 12th coolest month in Saint-Jean-sur-Richelieu, averaging 20.6°C.
For July in Saint-Jean-sur-Richelieu, pack light layers you can adjust through the day, with typical highs of 25.6°C and lows of 15.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 79% — quite humid.
Average wind speed in July is 2.2 m/s. The windiest July on record averaged 2.6 m/s (1996).
The wettest July on record was 2023 with 187 mm. On average, July sees 101 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 Saint-Jean-sur-Richelieu 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.
