March is one of the cooler months of the year in Gravenhurst, with average highs near 2.8°C and lows around -7.3°C (mean -2.2°C). It is about average for rainfall, averaging 40 mm of rainfall and 81% relative humidity across the period.
March is one of the cooler months of the year in Gravenhurst. Across 45 years of records, the warmest March in Gravenhurst was 2012 — when the month averaged 4.3°C — while the coldest was 1984 at -6.8°C. Typical March days reach 2.8°C with nights near -7.3°C. The long-term trend is warming, about 0.7°C per decade.
March is about average for rainfall in Gravenhurst, averaging 40 mm of rainfall. The wettest March on record was 2002 with 141 mm, while the driest were 2010 and 2018 at 12 mm.
Relative humidity in Gravenhurst during March averages 81%. The most humid March was 2001 at 98%, and the least humid was 2021 at 67%.
March receives about 3.5 kWh/m²/day of solar energy in Gravenhurst. The sunniest Marchs were 1999, 2006 and 2015 at 4.1 kWh/m²/day, and the cloudiest was 2004 at 2.8.
Average wind speed in Gravenhurst during March is 1.4 m/s. The windiest Marchs were 2021, 2023 and 2025, among others at 1.6 m/s, while the calmest was 2001 at 1.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | -3.3°C | -2.7°C | -3.1°C | -1.6°C | 0.3°C | +3.6°C |
| Avg High | 1.8°C | 2.4°C | 1.7°C | 3.6°C | 5.6°C | +3.8°C |
| Avg Low | -8.4°C | -7.8°C | -7.9°C | -6.7°C | -4.9°C | +3.5°C |
| Avg Rain | 52 mm | 36 mm | 61 mm | 23 mm | 20 mm | -31 mm |
March temperatures in Gravenhurst have risen by about 4.4°C between 1981–1985 and 2021–2025.
March has ranged from a record low of -35.6°C (2003) to a record high of 26.5°C (2012).
Rainfall in March is about average for rainfall, averaging 40 mm, with a wettest year of 141 mm.
A quieter season to visit Gravenhurst
If your dates are flexible, the more temperate months of July and August tend to be the most comfortable for visiting Gravenhurst. That said, March — with days averaging 2.8°C and nights around -7.3°C (mean -2.2°C) and moderate rainfall (40 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 | 5.7°C | 0.3°C | -5.1°C | 18.8°C | -19.7°C | 34 mm | 73% | 1.6 m/s | 3.2 |
| 2024 | 6.8°C | 1.9°C | -3.0°C | 16.5°C | -10.6°C | 18 mm | 71% | 1.5 m/s | 3.4 |
| 2023 | 4.1°C | -0.7°C | -5.4°C | 10.1°C | -11.6°C | 16 mm | 70% | 1.6 m/s | 3.6 |
| 2022 | 3.5°C | -1.4°C | -6.2°C | 16.6°C | -15.7°C | 20 mm | 76% | 1.5 m/s | 3.2 |
| 2021 | 6.9°C | 0.6°C | -5.6°C | 18.2°C | -16.5°C | 16 mm | 67% | 1.6 m/s | 4 |
| 2020 | 6.3°C | 1.0°C | -4.3°C | 15.8°C | -14.6°C | 18 mm | 75% | 1.4 m/s | 3.2 |
| 2019 | 1.1°C | -3.2°C | -7.5°C | 8.5°C | -15.5°C | 25 mm | 76% | 1.4 m/s | 3.4 |
| 2018 | 2.9°C | -1.8°C | -6.5°C | 11.5°C | -12.8°C | 12 mm | 71% | 1.4 m/s | 3.6 |
| 2017 | 1.8°C | -3.2°C | -8.2°C | 13.5°C | -18.0°C | 33 mm | 69% | 1.6 m/s | 3 |
| 2016 | 5.3°C | 0.2°C | -4.8°C | 15.5°C | -18.6°C | 48 mm | 78% | 1.3 m/s | 3.2 |
| 2015 | 0.9°C | -3.9°C | -8.8°C | 7.6°C | -18.2°C | 12 mm | 71% | 1.4 m/s | 4.1 |
| 2014 | -1.0°C | -6.6°C | -12.2°C | 14.3°C | -22.0°C | 18 mm | 76% | 1.4 m/s | 3.8 |
| 2013 | 3.1°C | -1.4°C | -5.9°C | 10.7°C | -12.1°C | 12 mm | 75% | 1.4 m/s | 3.4 |
| 2012 🔥 | 10.4°C | 4.3°C | -1.9°C | 26.5°C | -17.7°C | 16 mm | 73% | 1.5 m/s | 3.4 |
| 2011 | 2.3°C | -2.8°C | -7.9°C | 11.3°C | -17.7°C | 41 mm | 75% | 1.4 m/s | 3.7 |
| 2010 | 8.8°C | 2.6°C | -3.6°C | 16.4°C | -12.0°C | 12 mm | 69% | 1.3 m/s | 4 |
| 2009 | 4.0°C | -1.1°C | -6.1°C | 12.1°C | -19.3°C | 48 mm | 76% | 1.4 m/s | 3.8 |
| 2008 | 0.4°C | -4.1°C | -8.7°C | 8.4°C | -14.4°C | 40 mm | 80% | 1.5 m/s | 3.8 |
| 2007 | 2.1°C | -3.0°C | -8.1°C | 17.2°C | -29.6°C | 37 mm | 85% | 1.5 m/s | 3.5 |
| 2006 | 2.0°C | -3.1°C | -8.1°C | 18.9°C | -21.9°C | 39 mm | 86% | 1.4 m/s | 4.1 |
| 2005 | 1.1°C | -3.7°C | -8.5°C | 15.3°C | -18.2°C | 23 mm | 85% | 1.2 m/s | 3.9 |
| 2004 | 3.3°C | -1.0°C | -5.3°C | 13.8°C | -16.3°C | 93 mm | 88% | 1.4 m/s | 2.8 |
| 2003 | -0.8°C | -5.9°C | -11.0°C | 13.5°C | -35.6°C | 78 mm | 94% | 1.2 m/s | 3.5 |
| 2002 🌧️ | 0.5°C | -4.2°C | -9.0°C | 11.6°C | -20.6°C | 141 mm | 91% | 1.5 m/s | 3.1 |
| 2001 | -2.1°C | -6.2°C | -10.3°C | 1.0°C | -22.3°C | 69 mm | 98% | 1.1 m/s | 3.3 |
| 2000 | 6.4°C | 1.4°C | -3.5°C | 16.7°C | -10.5°C | 48 mm | 82% | 1.4 m/s | 3.2 |
| 1999 | 2.7°C | -2.5°C | -7.7°C | 16.3°C | -21.0°C | 23 mm | 80% | 1.4 m/s | 4.1 |
| 1998 | 3.2°C | -0.9°C | -5.1°C | 20.4°C | -18.2°C | 71 mm | 86% | 1.4 m/s | 3.2 |
| 1997 | -0.2°C | -4.9°C | -9.6°C | 13.0°C | -18.6°C | 50 mm | 89% | 1.4 m/s | 3.5 |
| 1996 | 0.8°C | -4.6°C | -9.9°C | 11.8°C | -21.4°C | 26 mm | 76% | 1.4 m/s | 4 |
| 1995 | 6.0°C | 0.0°C | -6.0°C | 19.3°C | -18.8°C | 19 mm | 79% | 1.2 m/s | 3.3 |
| 1994 | 2.6°C | -2.1°C | -6.9°C | 10.4°C | -14.0°C | 12 mm | 82% | 1.2 m/s | 3.6 |
| 1993 | 2.3°C | -2.9°C | -8.2°C | 19.0°C | -20.8°C | 23 mm | 85% | 1.2 m/s | 3.3 |
| 1992 | -0.6°C | -5.7°C | -10.9°C | 9.0°C | -20.0°C | 47 mm | 86% | 1.3 m/s | 3.9 |
| 1991 | 3.6°C | -1.7°C | -7.0°C | 14.3°C | -17.9°C | 69 mm | 83% | 1.4 m/s | 3.4 |
| 1990 | 3.7°C | -1.4°C | -6.5°C | 19.3°C | -20.9°C | 23 mm | 79% | 1.2 m/s | 3.3 |
| 1989 | 1.3°C | -4.3°C | -9.9°C | 19.2°C | -25.4°C | 35 mm | 83% | 1.3 m/s | 3.3 |
| 1988 | 3.0°C | -2.8°C | -8.5°C | 14.6°C | -21.3°C | 19 mm | 74% | 1.4 m/s | 3.6 |
| 1987 | 6.3°C | 0.3°C | -5.8°C | 18.1°C | -19.8°C | 30 mm | 77% | 1.2 m/s | 3.6 |
| 1986 | 4.0°C | -1.5°C | -6.9°C | 17.1°C | -23.0°C | 36 mm | 84% | 1.3 m/s | 3.3 |
| 1985 | -0.4°C | -5.5°C | -10.6°C | 9.7°C | -20.0°C | 96 mm | 93% | 1.4 m/s | 3.5 |
| 1984 ❄️ | -1.7°C | -6.8°C | -11.9°C | 8.8°C | -24.1°C | 59 mm | 86% | 1.4 m/s | 3.6 |
| 1983 | 3.2°C | -1.1°C | -5.5°C | 11.7°C | -20.4°C | 71 mm | 87% | 1.4 m/s | — |
| 1982 | -2.2°C | -6.5°C | -10.7°C | 11.6°C | -25.4°C | 80 mm | 97% | 1.3 m/s | — |
| 1981 | 2.9°C | -1.5°C | -5.9°C | 16.3°C | -16.6°C | 37 mm | 84% | 1.3 m/s | — |
Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.
The average high in March is around 2.8°C with lows near -7.3°C (mean -2.2°C), based on 45 years of NASA POWER data.
March averages 40 mm of rainfall in Gravenhurst, about average for rainfall. The wettest on record was 141 mm in 2002.
The hottest March reached 26.5°C in 2012. The coldest dipped to -35.6°C in 2003.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have risen by about 4.4°C. Daytime highs moved from 0.4°C to 5.4°C and overnight lows from -8.9°C to -5.1°C over the same span.
March is one of the cooler months of the year in Gravenhurst and about average for rainfall, so plan for around 2.8°C daytime highs and -7.3°C at night.
Not quite — March is the 4th coolest month in Gravenhurst, averaging -2.2°C.
For March in Gravenhurst, pack warm layers and a jacket for chilly mornings, with typical highs of 2.8°C and lows of -7.3°C.
Relative humidity in March averages 81% — quite humid.
Average wind speed in March is 1.4 m/s. The windiest March on record averaged 1.6 m/s (2017).
The wettest March on record was 2002 with 141 mm. On average, March sees 40 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 Gravenhurst 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.
