July is one of the warmer months of the year in Mississauga, with average highs near 24.1°C and lows around 17.1°C (mean 20.6°C). It is a relatively wet time of year, averaging 68 mm of rainfall and 72% relative humidity across the period.
July is one of the warmer months of the year in Mississauga. Across 45 years of records, the warmest July in Mississauga was 2020 — when the month averaged 24.8°C — while the coldest was 1992 at 15.8°C. Typical July days reach 24.1°C with nights near 17.1°C. The long-term trend is warming, about 1.2°C per decade.
July is a relatively wet time of year in Mississauga, averaging 68 mm of rainfall. The wettest July on record was 1992 with 132 mm, while the driest was 1989 at 35 mm.
Relative humidity in Mississauga during July averages 72%. The most humid July was 2004 at 79%, and the least humid was 1988 at 66%.
July receives about 6 kWh/m²/day of solar energy in Mississauga. The sunniest Julys were 2002, 2011 and 2018 at 6.5 kWh/m²/day, and the cloudiest was 1984 at 5.1.
Average wind speed in Mississauga during July is 2.9 m/s. The windiest July was 2006 at 3.3 m/s, while the calmest was 2024 at 2.4 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 | 20.3°C | 22.5°C | 23.1°C | +3.8°C |
| Avg High | 23.2°C | 22.4°C | 23.5°C | 25.6°C | 26.3°C | +3.1°C |
| Avg Low | 15.4°C | 14.9°C | 17.0°C | 19.3°C | 19.8°C | +4.4°C |
| Avg Rain | 57 mm | 64 mm | 84 mm | 67 mm | 66 mm | +9 mm |
July temperatures in Mississauga have risen by about 3.8°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 8°C (2001) to a record high of 33.8°C (1988).
Rainfall in July is a relatively wet time of year, averaging 68 mm, with a wettest year of 132 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 1°C per decade while lows rose 1.5°C per decade, narrowing the gap between day and night.
One of the best times to visit Mississauga
July is one of the best times to visit Mississauga. Expect days averaging 24.1°C and nights around 17.1°C (mean 20.6°C) — warmer than Mississauga's yearly average — with moderate rainfall (68 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 | 27.4°C | 24.0°C | 20.6°C | 31.4°C | 16.3°C | 41 mm | 67% | 2.7 m/s | 6.4 |
| 2024 | 26.1°C | 22.9°C | 19.7°C | 30.0°C | 13.7°C | 96 mm | 70% | 2.4 m/s | 6 |
| 2023 | 25.9°C | 22.8°C | 19.7°C | 29.0°C | 17.6°C | 94 mm | 71% | 2.8 m/s | 5.7 |
| 2022 | 25.6°C | 22.1°C | 18.7°C | 29.2°C | 14.9°C | 47 mm | 67% | 2.9 m/s | 6.1 |
| 2021 | 24.8°C | 21.8°C | 18.8°C | 28.8°C | 15.2°C | 71 mm | 73% | 3.1 m/s | 5.2 |
| 2020 🔥 | 28.1°C | 24.8°C | 21.5°C | 31.7°C | 19.3°C | 45 mm | 70% | 3 m/s | 6.4 |
| 2019 | 26.4°C | 23.2°C | 19.9°C | 29.6°C | 15.9°C | 82 mm | 73% | 2.7 m/s | 6.3 |
| 2018 | 26.5°C | 23.4°C | 20.4°C | 29.0°C | 16.8°C | 57 mm | 69% | 3.1 m/s | 6.5 |
| 2017 | 24.2°C | 21.2°C | 18.2°C | 27.8°C | 15.2°C | 68 mm | 76% | 2.8 m/s | 5.6 |
| 2016 | 26.0°C | 22.7°C | 19.4°C | 30.2°C | 13.8°C | 42 mm | 68% | 2.9 m/s | 6.2 |
| 2015 | 24.7°C | 21.3°C | 18.0°C | 29.9°C | 13.2°C | 38 mm | 70% | 2.7 m/s | 6.4 |
| 2014 | 22.7°C | 19.7°C | 16.6°C | 26.5°C | 13.1°C | 110 mm | 74% | 3.2 m/s | 5.8 |
| 2013 | 24.9°C | 22.3°C | 19.7°C | 31.9°C | 14.5°C | 93 mm | 76% | 3 m/s | 5.8 |
| 2012 | 27.3°C | 24.1°C | 20.9°C | 32.0°C | 18.7°C | 67 mm | 67% | 2.9 m/s | 6.2 |
| 2011 | 27.2°C | 23.8°C | 20.5°C | 31.9°C | 14.7°C | 38 mm | 69% | 3 m/s | 6.5 |
| 2010 | 26.3°C | 23.0°C | 19.7°C | 31.4°C | 13.3°C | 78 mm | 71% | 2.9 m/s | 6.2 |
| 2009 | 22.1°C | 19.3°C | 16.4°C | 24.2°C | 13.9°C | 101 mm | 76% | 3 m/s | 5.4 |
| 2008 | 24.2°C | 21.2°C | 18.1°C | 27.9°C | 14.0°C | 119 mm | 76% | 2.9 m/s | 5.9 |
| 2007 | 24.4°C | 21.2°C | 17.9°C | 31.0°C | 14.3°C | 58 mm | 68% | 2.7 m/s | 5.8 |
| 2006 | 26.2°C | 23.0°C | 19.8°C | 31.0°C | 14.4°C | 120 mm | 73% | 3.3 m/s | 5.8 |
| 2005 | 27.6°C | 24.2°C | 20.8°C | 32.2°C | 15.7°C | 63 mm | 67% | 3 m/s | 6.2 |
| 2004 | 22.8°C | 20.0°C | 17.3°C | 25.7°C | 13.7°C | 121 mm | 79% | 2.9 m/s | 5.2 |
| 2003 | 21.4°C | 17.4°C | 13.4°C | 26.9°C | 10.8°C | 80 mm | 76% | 2.7 m/s | 5.5 |
| 2002 | 23.7°C | 19.6°C | 15.5°C | 29.2°C | 11.8°C | 76 mm | 72% | 2.9 m/s | 6.5 |
| 2001 | 20.4°C | 16.7°C | 13.0°C | 25.0°C | 8.0°C | 41 mm | 73% | 3 m/s | 6.1 |
| 2000 | 22.7°C | 20.1°C | 17.5°C | 25.8°C | 15.0°C | 63 mm | 76% | 3 m/s | 5.6 |
| 1999 | 23.9°C | 19.9°C | 15.8°C | 30.6°C | 11.8°C | 51 mm | 71% | 3 m/s | 6.2 |
| 1998 | 25.0°C | 21.9°C | 18.7°C | 28.4°C | 15.8°C | 71 mm | 70% | 3.2 m/s | 6 |
| 1997 | 24.1°C | 20.6°C | 17.2°C | 27.4°C | 12.5°C | 37 mm | 70% | 3.2 m/s | 6.1 |
| 1996 | 20.7°C | 16.6°C | 12.5°C | 25.0°C | 9.1°C | 52 mm | 73% | 2.9 m/s | 6.2 |
| 1995 | 23.0°C | 19.0°C | 15.0°C | 30.0°C | 10.0°C | 41 mm | 74% | 2.8 m/s | 5.7 |
| 1994 | 21.8°C | 18.2°C | 14.6°C | 25.2°C | 10.5°C | 59 mm | 77% | 2.7 m/s | 5.9 |
| 1993 | 22.4°C | 18.5°C | 14.7°C | 25.4°C | 10.9°C | 66 mm | 75% | 2.8 m/s | 6.1 |
| 1992 ❄️ 🌧️ | 19.5°C | 15.8°C | 12.1°C | 23.8°C | 9.1°C | 132 mm | 78% | 2.8 m/s | 5.5 |
| 1991 | 22.4°C | 18.5°C | 14.5°C | 26.2°C | 10.9°C | 68 mm | 72% | 3 m/s | 6.2 |
| 1990 | 21.4°C | 17.5°C | 13.6°C | 26.1°C | 11.1°C | 61 mm | 74% | 2.9 m/s | 5.7 |
| 1989 | 23.3°C | 19.5°C | 15.8°C | 28.9°C | 11.6°C | 35 mm | 69% | 2.5 m/s | 6.4 |
| 1988 | 25.0°C | 20.4°C | 15.7°C | 33.8°C | 10.1°C | 96 mm | 66% | 2.5 m/s | 5.8 |
| 1987 | 24.2°C | 20.3°C | 16.5°C | 30.8°C | 11.0°C | 56 mm | 72% | 3 m/s | 6.1 |
| 1986 | 22.9°C | 19.0°C | 15.1°C | 27.4°C | 9.7°C | 75 mm | 74% | 2.8 m/s | 6 |
| 1985 | 21.4°C | 17.8°C | 14.3°C | 23.8°C | 10.6°C | 49 mm | 72% | 3 m/s | 6.3 |
| 1984 | 21.7°C | 18.0°C | 14.3°C | 24.5°C | 9.1°C | 40 mm | 73% | 3 m/s | 5.1 |
| 1983 | 23.6°C | 19.7°C | 15.8°C | 28.8°C | 9.7°C | 48 mm | 72% | 3.1 m/s | — |
| 1982 | 22.7°C | 18.6°C | 14.6°C | 26.2°C | 9.1°C | 38 mm | 71% | 2.7 m/s | — |
| 1981 | 24.3°C | 20.3°C | 16.3°C | 30.0°C | 12.8°C | 73 mm | 70% | 2.9 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 24.1°C with lows near 17.1°C (mean 20.6°C), based on 45 years of NASA POWER data.
July averages 68 mm of rainfall in Mississauga, a relatively wet time of year. The wettest on record was 132 mm in 1992.
The hottest July reached 33.8°C in 1988. The coldest dipped to 8°C in 2001.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 3.8°C. Daytime highs moved from 22.7°C to 26°C and overnight lows from 15.1°C to 19.5°C over the same span.
July is one of the warmer months of the year in Mississauga and a relatively wet time of year, so plan for around 24.1°C daytime highs and 17.1°C at night.
Not quite — July is the 12th coolest month in Mississauga, averaging 20.6°C.
For July in Mississauga, pack light layers you can adjust through the day, with typical highs of 24.1°C and lows of 17.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 72% — moderately humid.
Average wind speed in July is 2.9 m/s. The windiest July on record averaged 3.3 m/s (2006).
The wettest July on record was 1992 with 132 mm. On average, July sees 68 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 Mississauga 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.
