April is one of the cooler months of the year in Sault Ste. Marie, with average highs near 7.3°C and lows around -1.6°C (mean 2.8°C). It is about average for rainfall, averaging 74 mm of rainfall and 81% relative humidity across the period.
April is one of the cooler months of the year in Sault Ste. Marie. Across 45 years of records, the warmest April in Sault Ste. Marie was 2010 — when the month averaged 6°C — while the coldest was 2018 at -0.7°C. Typical April days reach 7.3°C with nights near -1.6°C. The long-term April temperature trend is broadly flat.
April is about average for rainfall in Sault Ste. Marie, averaging 74 mm of rainfall. The wettest April on record was 2011 with 132 mm, while the driest was 2012 at 30 mm.
Relative humidity in Sault Ste. Marie during April averages 81%. The most humid April was 2014 at 89%, and the least humid was 2000 at 76%.
April receives about 4.4 kWh/m²/day of solar energy in Sault Ste. Marie. The sunniest April was 2012 at 5.3 kWh/m²/day, and the cloudiest was 2014 at 3.4.
Average wind speed in Sault Ste. Marie during April is 1.9 m/s. The windiest April was 2024 at 2.3 m/s, while the calmest was 1989 at 1.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 3.1°C | 2.7°C | 3.4°C | 2.2°C | 2.8°C | -0.3°C |
| Avg High | 7.7°C | 7.3°C | 8.0°C | 6.4°C | 6.9°C | -0.8°C |
| Avg Low | -1.5°C | -1.8°C | -1.2°C | -2.1°C | -1.2°C | +0.3°C |
| Avg Rain | 65 mm | 71 mm | 65 mm | 77 mm | 101 mm | +37 mm |
April temperatures in Sault Ste. Marie have risen by about 0.6°C between 1981–1985 and 2021–2025.
April has ranged from a record low of -16.8°C (1982) to a record high of 21.6°C (1990).
Rainfall in April is about average for rainfall, averaging 74 mm, with a wettest year of 132 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.3°C per decade while lows rose 0°C per decade, narrowing the gap between day and night.
A good time to visit Sault Ste. Marie
April is a good time to visit Sault Ste. Marie, with days averaging 7.3°C and nights around -1.6°C (mean 2.8°C, cooler than Sault Ste. Marie's yearly average) and moderate rainfall. August and July 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 | 6.4°C | 2.0°C | -2.3°C | 15.2°C | -14.8°C | 101 mm | 83% | 2.1 m/s | 4.5 |
| 2024 | 9.1°C | 4.6°C | 0.1°C | 17.1°C | -6.4°C | 124 mm | 80% | 2.3 m/s | 4.5 |
| 2023 | 7.4°C | 3.2°C | -1.1°C | 19.5°C | -12.3°C | 107 mm | 86% | 2 m/s | 3.9 |
| 2022 | 5.1°C | 1.6°C | -1.9°C | 14.0°C | -7.0°C | 104 mm | 83% | 2.1 m/s | 4 |
| 2021 | 8.4°C | 4.3°C | 0.2°C | 13.9°C | -8.0°C | 76 mm | 83% | 1.9 m/s | 4.5 |
| 2020 | 5.2°C | 1.3°C | -2.5°C | 12.9°C | -7.9°C | 96 mm | 82% | 2 m/s | 4.6 |
| 2019 | 6.0°C | 2.1°C | -1.7°C | 15.5°C | -8.8°C | 117 mm | 84% | 1.8 m/s | 4 |
| 2018 ❄️ | 3.7°C | -0.7°C | -5.1°C | 15.4°C | -12.3°C | 63 mm | 80% | 2 m/s | 4.3 |
| 2017 | 8.4°C | 4.1°C | -0.2°C | 13.9°C | -3.2°C | 75 mm | 83% | 1.9 m/s | 4 |
| 2016 | 5.2°C | 0.8°C | -3.6°C | 16.1°C | -12.9°C | 69 mm | 82% | 1.8 m/s | 4.7 |
| 2015 | 6.3°C | 1.9°C | -2.5°C | 14.3°C | -10.9°C | 54 mm | 83% | 1.8 m/s | 4.6 |
| 2014 | 3.9°C | 0.2°C | -3.5°C | 10.3°C | -12.1°C | 107 mm | 89% | 2 m/s | 3.4 |
| 2013 | 3.9°C | 0.4°C | -3.1°C | 14.8°C | -10.1°C | 84 mm | 87% | 2.1 m/s | 3.5 |
| 2012 | 8.9°C | 4.0°C | -1.0°C | 14.1°C | -4.2°C | 30 mm | 76% | 2 m/s | 5.3 |
| 2011 🌧️ | 6.8°C | 2.7°C | -1.5°C | 14.9°C | -8.0°C | 132 mm | 81% | 2 m/s | 4.3 |
| 2010 🔥 | 11.0°C | 6.0°C | 0.9°C | 18.9°C | -2.9°C | 41 mm | 79% | 1.9 m/s | 5 |
| 2009 | 7.9°C | 3.6°C | -0.7°C | 17.0°C | -4.6°C | 45 mm | 78% | 2.1 m/s | 4.6 |
| 2008 | 8.9°C | 4.4°C | -0.1°C | 20.1°C | -9.8°C | 105 mm | 83% | 2 m/s | 4.6 |
| 2007 | 6.9°C | 2.4°C | -2.2°C | 19.3°C | -12.1°C | 62 mm | 82% | 2 m/s | 4.5 |
| 2006 | 10.4°C | 5.4°C | 0.4°C | 18.6°C | -4.2°C | 47 mm | 78% | 1.9 m/s | 4.9 |
| 2005 | 9.7°C | 4.8°C | -0.2°C | 20.1°C | -2.8°C | 61 mm | 78% | 1.7 m/s | 5.1 |
| 2004 | 7.1°C | 2.7°C | -1.8°C | 15.1°C | -7.2°C | 62 mm | 80% | 2 m/s | 4.4 |
| 2003 | 5.9°C | 1.0°C | -3.8°C | 14.2°C | -15.9°C | 65 mm | 80% | 1.9 m/s | 4.2 |
| 2002 | 6.0°C | 2.0°C | -2.0°C | 19.8°C | -11.0°C | 75 mm | 84% | 1.9 m/s | 3.9 |
| 2001 | 8.9°C | 4.1°C | -0.7°C | 18.1°C | -4.2°C | 84 mm | 82% | 2 m/s | 4 |
| 2000 | 8.2°C | 3.7°C | -0.8°C | 17.0°C | -5.6°C | 41 mm | 76% | 1.9 m/s | 4.4 |
| 1999 | 9.8°C | 4.8°C | -0.2°C | 17.0°C | -3.3°C | 58 mm | 78% | 1.6 m/s | 4.8 |
| 1998 | 10.3°C | 4.9°C | -0.6°C | 18.0°C | -4.1°C | 50 mm | 76% | 1.6 m/s | 5.1 |
| 1997 | 6.0°C | 1.5°C | -2.9°C | 14.3°C | -9.7°C | 36 mm | 82% | 1.7 m/s | 5 |
| 1996 | 3.6°C | -0.3°C | -4.1°C | 11.3°C | -11.1°C | 109 mm | 87% | 1.9 m/s | 4.1 |
| 1995 | 5.4°C | 1.3°C | -2.7°C | 11.1°C | -11.9°C | 101 mm | 79% | 2.1 m/s | 3.7 |
| 1994 | 6.8°C | 2.2°C | -2.3°C | 14.8°C | -9.4°C | 64 mm | 81% | 2 m/s | 4.2 |
| 1993 | 6.7°C | 2.4°C | -1.9°C | 13.6°C | -6.4°C | 109 mm | 80% | 1.9 m/s | 3.8 |
| 1992 | 6.3°C | 1.9°C | -2.5°C | 15.0°C | -11.3°C | 57 mm | 83% | 1.7 m/s | 4.3 |
| 1991 | 9.3°C | 4.5°C | -0.3°C | 17.2°C | -8.6°C | 88 mm | 83% | 1.9 m/s | 4.3 |
| 1990 | 8.3°C | 3.8°C | -0.6°C | 21.6°C | -7.0°C | 40 mm | 82% | 2 m/s | 4.1 |
| 1989 | 6.6°C | 2.0°C | -2.5°C | 13.9°C | -8.2°C | 49 mm | 79% | 1.5 m/s | 4.4 |
| 1988 | 7.9°C | 3.2°C | -1.5°C | 14.8°C | -5.1°C | 58 mm | 80% | 1.8 m/s | 4.7 |
| 1987 | 10.8°C | 5.7°C | 0.6°C | 20.4°C | -7.8°C | 40 mm | 78% | 1.9 m/s | 4.7 |
| 1986 | 9.1°C | 4.6°C | 0.1°C | 20.1°C | -5.8°C | 34 mm | 82% | 2.1 m/s | 4.2 |
| 1985 | 6.9°C | 2.5°C | -1.8°C | 19.8°C | -13.3°C | 114 mm | 88% | 1.9 m/s | 4.1 |
| 1984 | 9.5°C | 4.7°C | 0.0°C | 15.7°C | -6.7°C | 54 mm | 80% | 1.9 m/s | 4.6 |
| 1983 | 6.2°C | 1.9°C | -2.4°C | 14.6°C | -8.3°C | 68 mm | 82% | 1.9 m/s | — |
| 1982 | 4.8°C | -0.2°C | -5.2°C | 16.0°C | -16.8°C | 81 mm | 82% | 2.2 m/s | — |
| 1981 | 7.9°C | 3.4°C | -1.2°C | 14.4°C | -5.5°C | 85 mm | 79% | 2.1 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 7.3°C with lows near -1.6°C (mean 2.8°C), based on 45 years of NASA POWER data.
April averages 74 mm of rainfall in Sault Ste. Marie, about average for rainfall. The wettest on record was 132 mm in 2011.
The hottest April reached 21.6°C in 1990. The coldest dipped to -16.8°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 0.6°C. Daytime highs moved from 7.1°C to 7.3°C and overnight lows from -2.1°C to -1°C over the same span.
April is one of the cooler months of the year in Sault Ste. Marie and about average for rainfall, so plan for around 7.3°C daytime highs and -1.6°C at night.
Not quite — April is the 6th coolest month in Sault Ste. Marie, averaging 2.8°C.
For April in Sault Ste. Marie, pack warm layers and a jacket for chilly mornings, with typical highs of 7.3°C and lows of -1.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in April averages 81% — quite humid.
Average wind speed in April is 1.9 m/s. The windiest April on record averaged 2.3 m/s (2024).
The wettest April on record was 2011 with 132 mm. On average, April sees 74 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 Sault Ste. Marie 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.
