March is one of the cooler months of the year in Sault Ste. Marie, with average highs near -0.4°C and lows around -8.5°C (mean -4.4°C). It is one of the drier months, averaging 54 mm of rainfall and 90% relative humidity across the period.
March is one of the cooler months of the year in Sault Ste. Marie. Across 45 years of records, the warmest March in Sault Ste. Marie was 2012 — when the month averaged 2.4°C — while the coldest was 2014 at -10.3°C. Typical March days reach -0.4°C with nights near -8.5°C. The long-term trend is warming, about 0.4°C per decade.
March is one of the drier months in Sault Ste. Marie, averaging 54 mm of rainfall. The wettest March on record was 2025 with 132 mm, while the driest was 2010 at 4 mm.
Relative humidity in Sault Ste. Marie during March averages 90%. The most humid Marchs were 2013 and 2014 at 96%, and the least humid was 2010 at 82%.
March receives about 3.1 kWh/m²/day of solar energy in Sault Ste. Marie. The sunniest March was 2010 at 4.1 kWh/m²/day, and the cloudiest was 2004 at 2.7.
Average wind speed in Sault Ste. Marie during March is 2.4 m/s. The windiest March was 2025 at 2.9 m/s, while the calmest were 2001 and 2016 at 1.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | -5.5°C | -4.8°C | -4.2°C | -4.3°C | -2.9°C | +2.6°C |
| Avg High | -1.4°C | -0.7°C | -0.3°C | -0.1°C | 0.9°C | +2.3°C |
| Avg Low | -9.5°C | -8.9°C | -8.1°C | -8.5°C | -6.7°C | +2.8°C |
| Avg Rain | 59 mm | 52 mm | 51 mm | 45 mm | 72 mm | +13 mm |
March temperatures in Sault Ste. Marie have risen by about 2.6°C between 1981–1985 and 2021–2025.
March has ranged from a record low of -26.7°C (1984) to a record high of 21.1°C (2012).
Rainfall in March is one of the drier months, averaging 54 mm, with a wettest year of 132 mm.
A quieter season to visit Sault Ste. Marie
If your dates are flexible, the more temperate months of August and July tend to be the most comfortable for visiting Sault Ste. Marie. That said, March — with days averaging -0.4°C and nights around -8.5°C (mean -4.4°C) and moderate rainfall (54 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 🌧️ | 0.4°C | -3.4°C | -7.3°C | 14.2°C | -18.3°C | 132 mm | 90% | 2.9 m/s | 2.9 |
| 2024 | 2.8°C | -0.4°C | -3.6°C | 10.0°C | -9.5°C | 64 mm | 84% | 2.7 m/s | 3.1 |
| 2023 | -0.2°C | -4.2°C | -8.2°C | 4.5°C | -15.8°C | 30 mm | 87% | 2.4 m/s | 3.4 |
| 2022 | -1.7°C | -5.1°C | -8.5°C | 4.4°C | -19.4°C | 70 mm | 92% | 2.6 m/s | 3 |
| 2021 | 3.3°C | -1.1°C | -5.4°C | 11.1°C | -16.0°C | 49 mm | 84% | 2.7 m/s | 3.2 |
| 2020 | 0.8°C | -3.1°C | -7.1°C | 6.8°C | -17.6°C | 85 mm | 92% | 2.4 m/s | 2.8 |
| 2019 | -3.0°C | -6.6°C | -10.1°C | 1.6°C | -18.1°C | 43 mm | 95% | 2.4 m/s | 3.3 |
| 2018 | -1.4°C | -5.7°C | -10.1°C | 4.4°C | -15.4°C | 25 mm | 90% | 2.3 m/s | 3.6 |
| 2017 | -0.7°C | -4.6°C | -8.5°C | 8.0°C | -18.7°C | 61 mm | 87% | 2.8 m/s | 3.1 |
| 2016 | 2.2°C | -1.4°C | -5.1°C | 10.7°C | -19.7°C | 77 mm | 88% | 1.9 m/s | 3.1 |
| 2015 | -2.4°C | -7.2°C | -12.0°C | 2.1°C | -21.3°C | 38 mm | 92% | 2.3 m/s | 2.9 |
| 2014 ❄️ | -5.7°C | -10.3°C | -14.8°C | 0.5°C | -25.1°C | 38 mm | 96% | 2.2 m/s | 2.8 |
| 2013 | -2.6°C | -6.3°C | -9.9°C | 1.5°C | -19.3°C | 66 mm | 96% | 2.4 m/s | 3.2 |
| 2012 🔥 | 6.8°C | 2.4°C | -2.1°C | 21.1°C | -22.1°C | 57 mm | 87% | 2.5 m/s | 3 |
| 2011 | -0.2°C | -4.3°C | -8.4°C | 8.7°C | -18.3°C | 38 mm | 85% | 2.4 m/s | 3.5 |
| 2010 | 5.5°C | 0.8°C | -3.8°C | 15.6°C | -15.7°C | 4 mm | 82% | 2 m/s | 4.1 |
| 2009 | -0.4°C | -4.0°C | -7.5°C | 4.9°C | -23.0°C | 37 mm | 89% | 2.7 m/s | 3.3 |
| 2008 | -2.9°C | -7.1°C | -11.2°C | 1.8°C | -21.7°C | 61 mm | 93% | 2.4 m/s | 3.1 |
| 2007 | 1.3°C | -3.0°C | -7.3°C | 11.4°C | -26.3°C | 57 mm | 86% | 2.6 m/s | 3.1 |
| 2006 | 0.8°C | -3.1°C | -6.9°C | 10.6°C | -18.8°C | 22 mm | 88% | 2.3 m/s | 3.6 |
| 2005 | -1.4°C | -5.2°C | -9.1°C | 8.1°C | -18.5°C | 30 mm | 89% | 2.2 m/s | 3.3 |
| 2004 | 0.7°C | -3.1°C | -6.8°C | 8.6°C | -16.4°C | 71 mm | 92% | 2.7 m/s | 2.7 |
| 2003 | -1.8°C | -5.6°C | -9.5°C | 7.6°C | -23.2°C | 60 mm | 93% | 2.2 m/s | 2.8 |
| 2002 | -2.3°C | -6.3°C | -10.3°C | 7.1°C | -18.4°C | 86 mm | 91% | 2.6 m/s | 3 |
| 2001 | -1.8°C | -5.5°C | -9.2°C | 3.3°C | -17.8°C | 19 mm | 95% | 1.9 m/s | 2.8 |
| 2000 | 4.3°C | 0.4°C | -3.5°C | 12.9°C | -12.7°C | 62 mm | 84% | 2.4 m/s | 2.9 |
| 1999 | 0.5°C | -4.1°C | -8.7°C | 13.6°C | -21.0°C | 16 mm | 87% | 2.2 m/s | 3.6 |
| 1998 | 0.7°C | -3.4°C | -7.5°C | 14.6°C | -18.5°C | 111 mm | 90% | 2.5 m/s | 2.8 |
| 1997 | -3.2°C | -6.7°C | -10.1°C | 0.6°C | -18.1°C | 61 mm | 95% | 2.4 m/s | 3.1 |
| 1996 | -4.2°C | -8.1°C | -12.1°C | 2.0°C | -23.8°C | 45 mm | 93% | 2.4 m/s | 3.3 |
| 1995 | 1.4°C | -2.6°C | -6.6°C | 11.4°C | -22.1°C | 42 mm | 88% | 2.1 m/s | 2.9 |
| 1994 | 0.2°C | -3.7°C | -7.5°C | 6.5°C | -15.5°C | 46 mm | 87% | 2.1 m/s | 3.1 |
| 1993 | 0.0°C | -4.3°C | -8.7°C | 14.5°C | -20.1°C | 12 mm | 90% | 2 m/s | 3.3 |
| 1992 | -3.2°C | -7.4°C | -11.7°C | 3.0°C | -23.5°C | 38 mm | 94% | 2.2 m/s | 3.5 |
| 1991 | 0.8°C | -3.8°C | -8.4°C | 13.1°C | -19.8°C | 94 mm | 89% | 2.4 m/s | 3 |
| 1990 | 0.0°C | -3.8°C | -7.7°C | 8.2°C | -20.3°C | 51 mm | 87% | 2.3 m/s | 3 |
| 1989 | -4.1°C | -7.8°C | -11.5°C | 7.7°C | -24.3°C | 60 mm | 95% | 2.3 m/s | 2.9 |
| 1988 | -1.9°C | -6.3°C | -10.6°C | 6.4°C | -24.9°C | 67 mm | 91% | 2.7 m/s | 3.2 |
| 1987 | 2.1°C | -2.6°C | -7.2°C | 12.3°C | -20.1°C | 31 mm | 86% | 2.1 m/s | 3.4 |
| 1986 | -1.3°C | -5.2°C | -9.1°C | 8.5°C | -23.4°C | 86 mm | 96% | 2.4 m/s | 3 |
| 1985 | -1.8°C | -6.0°C | -10.2°C | 4.0°C | -20.0°C | 70 mm | 94% | 2.5 m/s | 3.1 |
| 1984 | -3.8°C | -8.2°C | -12.6°C | 4.7°C | -26.7°C | 46 mm | 93% | 2.4 m/s | 3.5 |
| 1983 | 0.0°C | -3.9°C | -7.7°C | 7.3°C | -21.8°C | 67 mm | 90% | 2.4 m/s | — |
| 1982 | -2.9°C | -6.5°C | -10.2°C | 3.9°C | -24.2°C | 65 mm | 94% | 2.7 m/s | — |
| 1981 | 1.5°C | -2.6°C | -6.8°C | 9.3°C | -15.4°C | 38 mm | 87% | 2.2 m/s | — |
Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.
The average high in March is around -0.4°C with lows near -8.5°C (mean -4.4°C), based on 45 years of NASA POWER data.
March averages 54 mm of rainfall in Sault Ste. Marie, one of the drier months. The wettest on record was 132 mm in 2025.
The hottest March reached 21.1°C in 2012. The coldest dipped to -26.7°C in 1984.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have risen by about 2.6°C. Daytime highs moved from -1.4°C to 0.9°C and overnight lows from -9.5°C to -6.6°C over the same span.
March is one of the cooler months of the year in Sault Ste. Marie and one of the drier months, so plan for around -0.4°C daytime highs and -8.5°C at night.
Not quite — March is the 4th coolest month in Sault Ste. Marie, averaging -4.4°C.
For March in Sault Ste. Marie, pack warm layers and a jacket for chilly mornings, with typical highs of -0.4°C and lows of -8.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in March averages 90% — quite humid.
Average wind speed in March is 2.4 m/s. The windiest March on record averaged 2.9 m/s (2025).
The wettest March on record was 2025 with 132 mm. On average, March sees 54 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 March, 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 March specifically, along with year-by-year records and how the month has changed over the decades.
