April is one of the cooler months of the year in Belleville, with average highs near 9°C and lows around 1.5°C (mean 5.3°C). It is about average for rainfall, averaging 65 mm of rainfall and 79% relative humidity across the period.
April is one of the cooler months of the year in Belleville. Across 45 years of records, the warmest April in Belleville was 2010 — when the month averaged 8.3°C — while the coldest was 2018 at 2.8°C. Typical April days reach 9°C with nights near 1.5°C. The long-term trend is warming, about 0.2°C per decade.
April is about average for rainfall in Belleville, averaging 65 mm of rainfall. The wettest April on record was 2004 with 122 mm, while the driest was 1997 at 23 mm.
Relative humidity in Belleville during April averages 79%. The most humid April was 1984 at 85%, and the least humid was 2012 at 74%.
April receives about 4.5 kWh/m²/day of solar energy in Belleville. The sunniest April was 1999 at 5.4 kWh/m²/day, and the cloudiest was 1993 at 3.6.
Average wind speed in Belleville during April is 2.5 m/s. The windiest April was 1982 at 3.2 m/s, while the calmest was 2001 at 2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 5.1°C | 4.9°C | 5.3°C | 5.2°C | 5.9°C | +0.8°C |
| Avg High | 9.0°C | 8.7°C | 9.1°C | 8.9°C | 9.5°C | +0.5°C |
| Avg Low | 1.2°C | 1.1°C | 1.6°C | 1.5°C | 2.2°C | +1°C |
| Avg Rain | 54 mm | 56 mm | 78 mm | 70 mm | 66 mm | +12 mm |
April temperatures in Belleville have risen by about 1.5°C between 1981–1985 and 2021–2025.
April has ranged from a record low of -12.3°C (1982) to a record high of 19.6°C (1986).
Rainfall in April is about average for rainfall, averaging 65 mm, with a wettest year of 122 mm.
A good time to visit Belleville
April is a good time to visit Belleville, with days averaging 9°C and nights around 1.5°C (mean 5.3°C, cooler than Belleville's yearly average) and moderate rainfall. July and August are marginally more temperate, but April still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 9.4°C | 5.6°C | 1.7°C | 17.6°C | -3.8°C | 56 mm | 77% | 2.7 m/s | 4.4 |
| 2024 | 10.5°C | 6.9°C | 3.4°C | 16.1°C | -1.7°C | 100 mm | 79% | 2.7 m/s | 4.1 |
| 2023 | 10.4°C | 6.7°C | 2.9°C | 19.6°C | -4.8°C | 91 mm | 81% | 2.5 m/s | 4.6 |
| 2022 | 8.7°C | 5.2°C | 1.6°C | 14.6°C | -2.2°C | 53 mm | 78% | 2.6 m/s | 4.5 |
| 2021 | 9.8°C | 6.2°C | 2.6°C | 15.7°C | -4.1°C | 58 mm | 78% | 2.3 m/s | 4.4 |
| 2020 | 8.0°C | 4.6°C | 1.1°C | 11.8°C | -2.6°C | 41 mm | 75% | 2.9 m/s | 4.4 |
| 2019 | 8.3°C | 4.9°C | 1.5°C | 13.2°C | -3.6°C | 76 mm | 83% | 2.7 m/s | 4.1 |
| 2018 ❄️ | 5.8°C | 2.8°C | -0.3°C | 13.3°C | -5.2°C | 101 mm | 80% | 3.1 m/s | 4.1 |
| 2017 | 10.6°C | 7.0°C | 3.5°C | 16.4°C | -1.9°C | 93 mm | 82% | 2.6 m/s | 4.2 |
| 2016 | 7.4°C | 3.5°C | -0.5°C | 14.9°C | -7.8°C | 37 mm | 75% | 2.4 m/s | 5.3 |
| 2015 | 9.6°C | 5.4°C | 1.2°C | 16.3°C | -3.3°C | 50 mm | 75% | 2.6 m/s | 5.1 |
| 2014 | 8.5°C | 4.5°C | 0.4°C | 14.5°C | -5.1°C | 97 mm | 79% | 2.6 m/s | 4.3 |
| 2013 | 8.2°C | 4.7°C | 1.2°C | 15.9°C | -4.1°C | 63 mm | 78% | 3.1 m/s | 4.3 |
| 2012 | 9.7°C | 5.7°C | 1.6°C | 19.3°C | -2.4°C | 42 mm | 74% | 2.6 m/s | 4.7 |
| 2011 | 8.8°C | 5.3°C | 1.8°C | 15.9°C | -3.0°C | 95 mm | 81% | 2.7 m/s | 4 |
| 2010 🔥 | 12.2°C | 8.3°C | 4.3°C | 17.5°C | 0.3°C | 47 mm | 75% | 2.2 m/s | 5.3 |
| 2009 | 9.5°C | 5.8°C | 2.0°C | 18.0°C | -3.0°C | 113 mm | 80% | 2.9 m/s | 4.7 |
| 2008 | 10.9°C | 6.8°C | 2.8°C | 19.6°C | -3.8°C | 66 mm | 80% | 2.2 m/s | 5.1 |
| 2007 | 7.4°C | 4.4°C | 1.3°C | 16.4°C | -5.6°C | 88 mm | 83% | 2.9 m/s | 3.8 |
| 2006 | 10.7°C | 6.6°C | 2.4°C | 18.6°C | -3.6°C | 60 mm | 79% | 2.4 m/s | 5.1 |
| 2005 | 9.8°C | 5.9°C | 1.9°C | 15.7°C | -1.3°C | 83 mm | 80% | 2.3 m/s | 4.7 |
| 2004 🌧️ | 8.9°C | 5.4°C | 1.8°C | 17.2°C | -6.3°C | 122 mm | 81% | 2.6 m/s | 4.6 |
| 2003 | 7.2°C | 3.3°C | -0.7°C | 15.6°C | -9.0°C | 49 mm | 80% | 2.5 m/s | 4.5 |
| 2002 | 8.5°C | 5.0°C | 1.5°C | 18.2°C | -3.7°C | 94 mm | 82% | 2.4 m/s | 4.2 |
| 2001 | 9.5°C | 5.3°C | 1.1°C | 16.3°C | -2.6°C | 25 mm | 80% | 2 m/s | 4.9 |
| 2000 | 8.2°C | 4.8°C | 1.4°C | 14.8°C | -3.3°C | 80 mm | 81% | 2.6 m/s | 4 |
| 1999 | 9.7°C | 5.5°C | 1.2°C | 16.3°C | -2.8°C | 40 mm | 77% | 2.3 m/s | 5.4 |
| 1998 | 10.7°C | 6.6°C | 2.4°C | 16.6°C | -1.6°C | 29 mm | 75% | 2.2 m/s | 5.2 |
| 1997 | 8.4°C | 4.4°C | 0.5°C | 16.4°C | -7.0°C | 23 mm | 77% | 2.4 m/s | 5 |
| 1996 | 6.8°C | 3.1°C | -0.5°C | 13.9°C | -4.7°C | 78 mm | 80% | 2.6 m/s | 3.8 |
| 1995 | 7.0°C | 3.1°C | -0.9°C | 11.7°C | -6.9°C | 38 mm | 74% | 2.7 m/s | 4.2 |
| 1994 | 9.0°C | 4.9°C | 0.7°C | 16.7°C | -4.3°C | 75 mm | 81% | 2.7 m/s | 4.7 |
| 1993 | 8.4°C | 4.9°C | 1.3°C | 13.8°C | -2.8°C | 62 mm | 83% | 2.3 m/s | 3.6 |
| 1992 | 7.6°C | 4.1°C | 0.7°C | 14.2°C | -6.0°C | 63 mm | 81% | 2.1 m/s | 4.5 |
| 1991 | 10.0°C | 6.6°C | 3.2°C | 16.8°C | -2.8°C | 73 mm | 83% | 2.6 m/s | 4.1 |
| 1990 | 9.0°C | 5.7°C | 2.4°C | 18.9°C | -4.1°C | 74 mm | 83% | 2.5 m/s | 4.4 |
| 1989 | 7.8°C | 3.9°C | 0.0°C | 13.7°C | -2.6°C | 27 mm | 76% | 2.2 m/s | 4.9 |
| 1988 | 9.0°C | 5.2°C | 1.4°C | 13.3°C | -2.3°C | 43 mm | 80% | 2.5 m/s | 4.2 |
| 1987 | 11.2°C | 7.5°C | 3.8°C | 18.5°C | -2.8°C | 56 mm | 81% | 2.4 m/s | 4.6 |
| 1986 | 10.4°C | 6.3°C | 2.2°C | 19.6°C | -4.9°C | 44 mm | 80% | 2.3 m/s | 5.1 |
| 1985 | 9.1°C | 5.1°C | 1.1°C | 18.1°C | -5.4°C | 38 mm | 82% | 2.6 m/s | 4.7 |
| 1984 | 9.0°C | 5.5°C | 2.0°C | 16.1°C | -2.4°C | 96 mm | 85% | 2.3 m/s | 4.7 |
| 1983 | 7.9°C | 4.4°C | 0.8°C | 13.7°C | -4.0°C | 86 mm | 83% | 2.6 m/s | — |
| 1982 | 7.4°C | 3.0°C | -1.4°C | 16.1°C | -12.3°C | 45 mm | 77% | 3.2 m/s | — |
| 1981 | 9.4°C | 5.2°C | 0.9°C | 15.1°C | -4.8°C | 55 mm | 78% | 2.8 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 9°C with lows near 1.5°C (mean 5.3°C), based on 45 years of NASA POWER data.
April averages 65 mm of rainfall in Belleville, about average for rainfall. The wettest on record was 122 mm in 2004.
The hottest April reached 19.6°C in 1986. The coldest dipped to -12.3°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 1.5°C. Daytime highs moved from 8.6°C to 9.8°C and overnight lows from 0.7°C to 2.4°C over the same span.
April is one of the cooler months of the year in Belleville and about average for rainfall, so plan for around 9°C daytime highs and 1.5°C at night.
Not quite — April is the 6th coolest month in Belleville, averaging 5.3°C.
For April in Belleville, pack warm layers and a jacket for chilly mornings, with typical highs of 9°C and lows of 1.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in April averages 79% — quite humid.
Average wind speed in April is 2.5 m/s. The windiest April on record averaged 3.2 m/s (1982).
The wettest April on record was 2004 with 122 mm. On average, April sees 65 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 April, 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 April specifically, along with year-by-year records and how the month has changed over the decades.
