July is one of the warmer months of the year in Belleville, with average highs near 31°C and lows around 20.2°C (mean 25.6°C). It is a relatively wet time of year, averaging 106 mm of rainfall and 74% relative humidity across the period.
July is one of the warmer months of the year in Belleville. Across 45 years of records, the warmest July in Belleville was 2012 — when the month averaged 30.7°C — while the coldest was 2009 at 22.6°C. Typical July days reach 31°C with nights near 20.2°C. The long-term July temperature trend is broadly flat.
July is a relatively wet time of year in Belleville, averaging 106 mm of rainfall. The wettest July on record was 2024 with 233 mm, while the driest was 1983 at 33 mm.
Relative humidity in Belleville during July averages 74%. The most humid July was 2015 at 84%, and the least humid was 2012 at 48%.
July receives about 6.2 kWh/m²/day of solar energy in Belleville. The sunniest Julys were 2003 and 2017 at 6.9 kWh/m²/day, and the cloudiest was 1992 at 5.4.
Average wind speed in Belleville during July is 1.6 m/s. The windiest Julys were 1990, 1992 and 2006, among others at 1.8 m/s, while the calmest were 2011 and 2021 at 1.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 25.6°C | 25.2°C | 25.4°C | 25.9°C | 26.0°C | +0.4°C |
| Avg High | 31.1°C | 30.5°C | 31.0°C | 31.1°C | 31.2°C | +0.1°C |
| Avg Low | 20.1°C | 19.8°C | 19.8°C | 20.6°C | 20.8°C | +0.7°C |
| Avg Rain | 96 mm | 93 mm | 103 mm | 97 mm | 161 mm | +65 mm |
July temperatures in Belleville have risen by about 1.1°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 11.1°C (1983) to a record high of 42.6°C (2012).
Rainfall in July is a relatively wet time of year, averaging 106 mm, with a wettest year of 233 mm.
One of the best times to visit Belleville
July is one of the best times to visit Belleville. Expect days averaging 31°C and nights around 20.2°C (mean 25.6°C) — warmer than Belleville's yearly average — with higher rainfall (106 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 | 31.6°C | 27.0°C | 22.5°C | 34.3°C | 18.1°C | 129 mm | 79% | 1.4 m/s | 6.2 |
| 2024 🌧️ | 29.3°C | 24.5°C | 19.6°C | 33.3°C | 12.3°C | 233 mm | 78% | 1.5 m/s | 6 |
| 2023 | 33.6°C | 27.1°C | 20.7°C | 40.2°C | 16.2°C | 118 mm | 66% | 1.5 m/s | 6.1 |
| 2022 | 32.2°C | 26.5°C | 20.8°C | 39.0°C | 16.9°C | 159 mm | 72% | 1.5 m/s | 6.1 |
| 2021 | 29.7°C | 24.6°C | 19.4°C | 33.8°C | 13.5°C | 173 mm | 79% | 1.3 m/s | 5.9 |
| 2020 | 30.6°C | 26.0°C | 21.5°C | 33.5°C | 18.5°C | 156 mm | 82% | 1.5 m/s | 6.3 |
| 2019 | 29.8°C | 25.4°C | 21.0°C | 33.8°C | 15.2°C | 109 mm | 82% | 1.5 m/s | 6.6 |
| 2018 | 30.0°C | 25.0°C | 19.9°C | 33.7°C | 15.5°C | 96 mm | 77% | 1.5 m/s | 6.6 |
| 2017 | 32.8°C | 26.8°C | 20.8°C | 38.9°C | 14.2°C | 79 mm | 68% | 1.5 m/s | 6.9 |
| 2016 | 30.2°C | 25.9°C | 21.6°C | 33.4°C | 15.5°C | 161 mm | 82% | 1.4 m/s | 5.8 |
| 2015 | 29.2°C | 24.8°C | 20.4°C | 33.7°C | 14.8°C | 115 mm | 84% | 1.6 m/s | 5.6 |
| 2014 | 29.4°C | 23.1°C | 16.9°C | 36.3°C | 13.1°C | 47 mm | 68% | 1.7 m/s | 6.5 |
| 2013 | 28.1°C | 23.2°C | 18.3°C | 32.4°C | 12.1°C | 92 mm | 80% | 1.5 m/s | 6.1 |
| 2012 🔥 | 38.1°C | 30.7°C | 23.3°C | 42.6°C | 20.0°C | 34 mm | 48% | 1.7 m/s | 6.6 |
| 2011 | 32.5°C | 27.5°C | 22.4°C | 35.8°C | 18.2°C | 97 mm | 79% | 1.3 m/s | 6.8 |
| 2010 | 31.2°C | 26.5°C | 21.7°C | 34.5°C | 13.6°C | 136 mm | 80% | 1.6 m/s | 6.5 |
| 2009 ❄️ | 27.2°C | 22.6°C | 18.0°C | 30.9°C | 13.5°C | 137 mm | 79% | 1.5 m/s | 5.5 |
| 2008 | 29.6°C | 24.5°C | 19.5°C | 34.4°C | 15.5°C | 172 mm | 81% | 1.5 m/s | 6.3 |
| 2007 | 30.8°C | 24.8°C | 18.7°C | 35.3°C | 13.5°C | 56 mm | 68% | 1.5 m/s | 6.7 |
| 2006 | 33.5°C | 27.3°C | 21.0°C | 38.6°C | 14.2°C | 72 mm | 65% | 1.8 m/s | 6.4 |
| 2005 | 32.8°C | 26.6°C | 20.3°C | 39.3°C | 15.7°C | 106 mm | 66% | 1.7 m/s | 6.4 |
| 2004 | 28.9°C | 24.1°C | 19.3°C | 35.4°C | 13.9°C | 139 mm | 78% | 1.7 m/s | 5.7 |
| 2003 | 31.5°C | 25.4°C | 19.4°C | 36.5°C | 15.2°C | 65 mm | 70% | 1.7 m/s | 6.9 |
| 2002 | 32.4°C | 26.9°C | 21.4°C | 36.7°C | 15.6°C | 43 mm | 72% | 1.5 m/s | 6.4 |
| 2001 | 33.4°C | 27.1°C | 20.9°C | 39.1°C | 14.3°C | 113 mm | 65% | 1.6 m/s | 6 |
| 2000 | 29.7°C | 24.4°C | 19.1°C | 35.4°C | 13.1°C | 130 mm | 74% | 1.5 m/s | 5.8 |
| 1999 | 33.7°C | 27.3°C | 20.9°C | 41.4°C | 13.0°C | 65 mm | 67% | 1.7 m/s | 6.7 |
| 1998 | 29.5°C | 24.9°C | 20.3°C | 35.6°C | 16.3°C | 138 mm | 81% | 1.5 m/s | 5.5 |
| 1997 | 31.7°C | 25.4°C | 19.2°C | 38.3°C | 11.9°C | 53 mm | 71% | 1.5 m/s | 6.8 |
| 1996 | 28.8°C | 23.3°C | 17.8°C | 34.3°C | 11.8°C | 91 mm | 74% | 1.7 m/s | 5.9 |
| 1995 | 29.3°C | 24.6°C | 19.8°C | 33.5°C | 12.8°C | 79 mm | 81% | 1.5 m/s | 6.1 |
| 1994 | 28.9°C | 23.9°C | 18.9°C | 32.6°C | 13.3°C | 57 mm | 79% | 1.4 m/s | 6.1 |
| 1993 | 30.5°C | 26.2°C | 22.0°C | 34.5°C | 17.8°C | 169 mm | 84% | 1.6 m/s | 5.9 |
| 1992 | 31.4°C | 25.7°C | 20.1°C | 36.0°C | 16.0°C | 104 mm | 73% | 1.8 m/s | 5.4 |
| 1991 | 32.1°C | 26.1°C | 20.1°C | 36.9°C | 14.3°C | 92 mm | 67% | 1.7 m/s | 6.6 |
| 1990 | 29.4°C | 24.2°C | 19.0°C | 34.4°C | 13.8°C | 79 mm | 77% | 1.8 m/s | 6.3 |
| 1989 | 30.3°C | 25.3°C | 20.2°C | 34.6°C | 17.0°C | 75 mm | 75% | 1.8 m/s | 5.7 |
| 1988 | 33.5°C | 27.0°C | 20.5°C | 40.1°C | 14.3°C | 100 mm | 60% | 1.4 m/s | 5.9 |
| 1987 | 32.1°C | 26.5°C | 20.9°C | 37.8°C | 14.0°C | 131 mm | 72% | 1.6 m/s | 6 |
| 1986 | 33.5°C | 27.5°C | 21.6°C | 38.7°C | 15.7°C | 110 mm | 70% | 1.8 m/s | 6.3 |
| 1985 | 29.1°C | 23.8°C | 18.5°C | 32.6°C | 14.4°C | 67 mm | 78% | 1.6 m/s | 6.2 |
| 1984 | 29.9°C | 24.0°C | 18.1°C | 34.5°C | 13.6°C | 47 mm | 70% | 1.6 m/s | 5.8 |
| 1983 | 31.0°C | 25.6°C | 20.2°C | 35.8°C | 11.1°C | 33 mm | 75% | 1.6 m/s | — |
| 1982 | 30.1°C | 25.3°C | 20.5°C | 32.6°C | 15.8°C | 119 mm | 79% | 1.5 m/s | — |
| 1981 | 30.2°C | 25.4°C | 20.6°C | 34.3°C | 13.2°C | 186 mm | 81% | 1.5 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 31°C with lows near 20.2°C (mean 25.6°C), based on 45 years of NASA POWER data.
July averages 106 mm of rainfall in Belleville, a relatively wet time of year. The wettest on record was 233 mm in 2024.
The hottest July reached 42.6°C in 2012. The coldest dipped to 11.1°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 1.1°C. Daytime highs moved from 30.1°C to 31.3°C and overnight lows from 19.6°C to 20.6°C over the same span.
July is one of the warmer months of the year in Belleville and a relatively wet time of year, so plan for around 31°C daytime highs and 20.2°C at night.
Not quite — July is the 12th coolest month in Belleville, averaging 25.6°C.
For July in Belleville, pack light, breathable clothing and sun protection, with typical highs of 31°C and lows of 20.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 74% — moderately humid.
Average wind speed in July is 1.6 m/s. The windiest July on record averaged 1.8 m/s (1986).
The wettest July on record was 2024 with 233 mm. On average, July sees 106 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 Belleville 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.
