March is one of the cooler months of the year in Orillia, with average highs near 2.8°C and lows around -5.7°C (mean -1.5°C). It is about average for rainfall, averaging 40 mm of rainfall and 82% relative humidity across the period.
March is one of the cooler months of the year in Orillia. Across 45 years of records, the warmest March in Orillia was 2012 — when the month averaged 4.3°C — while the coldest was 2014 at -6.8°C. Typical March days reach 2.8°C with nights near -5.7°C. The long-term trend is warming, about 0.3°C per decade.
March is about average for rainfall in Orillia, averaging 40 mm of rainfall. The wettest March on record was 2002 with 150 mm, while the driest was 1994 at 13 mm.
Relative humidity in Orillia during March averages 82%. The most humid March was 1982 at 93%, and the least humid was 2021 at 72%.
March receives about 3.5 kWh/m²/day of solar energy in Orillia. 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 Orillia during March is 2.5 m/s. The windiest March was 2017 at 3 m/s, while the calmest was 2003 at 2.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | -2.1°C | -1.6°C | -1.7°C | -1.5°C | 0.3°C | +2.4°C |
| Avg High | 2.4°C | 2.7°C | 2.2°C | 2.7°C | 4.8°C | +2.4°C |
| Avg Low | -6.5°C | -6.0°C | -5.7°C | -5.7°C | -4.3°C | +2.2°C |
| Avg Rain | 41 mm | 28 mm | 63 mm | 35 mm | 30 mm | -11 mm |
March temperatures in Orillia have risen by about 2.9°C between 1981–1985 and 2021–2025.
March has ranged from a record low of -29.8°C (2003) to a record high of 22.8°C (2012).
Rainfall in March is about average for rainfall, averaging 40 mm, with a wettest year of 150 mm.
A quieter season to visit Orillia
If your dates are flexible, the more temperate months of July and August tend to be the most comfortable for visiting Orillia. That said, March — with days averaging 2.8°C and nights around -5.7°C (mean -1.5°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 | 5.1°C | 0.2°C | -4.6°C | 16.2°C | -18.0°C | 46 mm | 78% | 2.7 m/s | 3.2 |
| 2024 | 6.0°C | 1.8°C | -2.4°C | 14.4°C | -8.7°C | 27 mm | 77% | 2.6 m/s | 3.4 |
| 2023 | 3.3°C | -0.8°C | -4.9°C | 8.4°C | -10.3°C | 30 mm | 76% | 2.5 m/s | 3.6 |
| 2022 | 3.1°C | -1.2°C | -5.4°C | 14.8°C | -13.8°C | 30 mm | 81% | 2.5 m/s | 3.2 |
| 2021 | 6.0°C | 0.7°C | -4.7°C | 15.9°C | -15.0°C | 25 mm | 72% | 2.7 m/s | 4 |
| 2020 | 5.3°C | 0.9°C | -3.6°C | 15.7°C | -12.2°C | 24 mm | 81% | 2.2 m/s | 3.2 |
| 2019 | 0.7°C | -3.2°C | -7.0°C | 8.0°C | -15.2°C | 37 mm | 81% | 2.4 m/s | 3.4 |
| 2018 | 2.0°C | -1.8°C | -5.6°C | 8.5°C | -12.1°C | 24 mm | 78% | 2.5 m/s | 3.6 |
| 2017 | 1.3°C | -2.4°C | -6.2°C | 12.5°C | -13.9°C | 46 mm | 78% | 3 m/s | 3 |
| 2016 | 4.2°C | 0.3°C | -3.6°C | 14.9°C | -13.6°C | 71 mm | 84% | 2.2 m/s | 3.2 |
| 2015 | 0.2°C | -4.3°C | -8.8°C | 6.7°C | -19.9°C | 19 mm | 77% | 2.4 m/s | 4.1 |
| 2014 ❄️ | -1.6°C | -6.8°C | -12.1°C | 12.3°C | -21.8°C | 29 mm | 81% | 2.3 m/s | 3.8 |
| 2013 | 2.0°C | -1.6°C | -5.2°C | 9.2°C | -10.9°C | 19 mm | 82% | 2.6 m/s | 3.4 |
| 2012 🔥 | 9.3°C | 4.3°C | -0.6°C | 22.8°C | -14.1°C | 20 mm | 78% | 2.6 m/s | 3.4 |
| 2011 | 1.8°C | -2.1°C | -5.9°C | 11.0°C | -14.0°C | 57 mm | 81% | 2.7 m/s | 3.7 |
| 2010 | 7.2°C | 2.4°C | -2.3°C | 14.0°C | -9.7°C | 31 mm | 77% | 2.3 m/s | 4 |
| 2009 | 3.5°C | -0.6°C | -4.7°C | 11.3°C | -16.3°C | 73 mm | 81% | 2.5 m/s | 3.8 |
| 2008 | 0.3°C | -3.2°C | -6.7°C | 9.2°C | -12.2°C | 59 mm | 84% | 2.9 m/s | 3.8 |
| 2007 | 2.3°C | -1.8°C | -5.9°C | 17.5°C | -23.2°C | 38 mm | 86% | 2.9 m/s | 3.5 |
| 2006 | 2.6°C | -1.5°C | -5.5°C | 17.0°C | -14.4°C | 44 mm | 84% | 2.8 m/s | 4.1 |
| 2005 | 1.2°C | -2.5°C | -6.2°C | 13.8°C | -15.1°C | 23 mm | 85% | 2.4 m/s | 3.9 |
| 2004 | 3.8°C | 0.3°C | -3.3°C | 13.6°C | -13.1°C | 75 mm | 87% | 2.6 m/s | 2.8 |
| 2003 | 0.5°C | -4.4°C | -9.3°C | 13.4°C | -29.8°C | 70 mm | 91% | 2.1 m/s | 3.5 |
| 2002 🌧️ | 1.1°C | -2.7°C | -6.6°C | 11.4°C | -17.3°C | 150 mm | 89% | 2.8 m/s | 3.1 |
| 2001 | 0.6°C | -3.0°C | -6.5°C | 6.3°C | -15.0°C | 61 mm | 89% | 2.3 m/s | 3.3 |
| 2000 | 6.5°C | 2.3°C | -2.0°C | 18.4°C | -7.6°C | 38 mm | 80% | 2.6 m/s | 3.2 |
| 1999 | 2.4°C | -1.9°C | -6.2°C | 15.4°C | -18.0°C | 24 mm | 82% | 2.7 m/s | 4.1 |
| 1998 | 3.8°C | 0.3°C | -3.2°C | 18.8°C | -13.6°C | 45 mm | 84% | 2.7 m/s | 3.2 |
| 1997 | 0.6°C | -3.3°C | -7.2°C | 12.2°C | -14.0°C | 47 mm | 87% | 2.8 m/s | 3.5 |
| 1996 | 0.8°C | -3.8°C | -8.3°C | 11.1°C | -18.1°C | 25 mm | 77% | 2.4 m/s | 4 |
| 1995 | 5.7°C | 0.6°C | -4.6°C | 18.7°C | -16.0°C | 24 mm | 79% | 2.3 m/s | 3.3 |
| 1994 | 2.4°C | -2.0°C | -6.3°C | 11.3°C | -13.1°C | 13 mm | 82% | 2.2 m/s | 3.6 |
| 1993 | 2.6°C | -1.9°C | -6.3°C | 16.9°C | -17.2°C | 15 mm | 83% | 2.4 m/s | 3.3 |
| 1992 | 0.8°C | -3.5°C | -7.7°C | 9.7°C | -15.5°C | 28 mm | 82% | 2.6 m/s | 3.9 |
| 1991 | 3.8°C | -0.7°C | -5.2°C | 13.3°C | -13.9°C | 45 mm | 83% | 2.7 m/s | 3.4 |
| 1990 | 4.2°C | -0.3°C | -4.8°C | 18.6°C | -16.5°C | 17 mm | 78% | 2.4 m/s | 3.3 |
| 1989 | 2.0°C | -2.8°C | -7.6°C | 18.6°C | -20.9°C | 22 mm | 80% | 2.6 m/s | 3.3 |
| 1988 | 2.9°C | -1.9°C | -6.8°C | 13.9°C | -17.4°C | 14 mm | 75% | 2.7 m/s | 3.6 |
| 1987 | 6.1°C | 0.9°C | -4.3°C | 15.4°C | -17.1°C | 20 mm | 77% | 2.2 m/s | 3.6 |
| 1986 | 4.0°C | -0.8°C | -5.5°C | 16.7°C | -19.2°C | 22 mm | 84% | 2.6 m/s | 3.3 |
| 1985 | 1.7°C | -2.8°C | -7.4°C | 10.4°C | -17.2°C | 82 mm | 87% | 2.8 m/s | 3.5 |
| 1984 | -1.4°C | -5.7°C | -9.9°C | 6.9°C | -20.0°C | 55 mm | 86% | 2.6 m/s | 3.6 |
| 1983 | 3.5°C | -0.4°C | -4.2°C | 10.9°C | -15.1°C | 67 mm | 87% | 2.6 m/s | — |
| 1982 | -0.5°C | -4.5°C | -8.5°C | 13.5°C | -21.8°C | 69 mm | 93% | 2.6 m/s | — |
| 1981 | 3.2°C | -0.7°C | -4.5°C | 16.7°C | -13.2°C | 20 mm | 82% | 2.6 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 -5.7°C (mean -1.5°C), based on 45 years of NASA POWER data.
March averages 40 mm of rainfall in Orillia, about average for rainfall. The wettest on record was 150 mm in 2002.
The hottest March reached 22.8°C in 2012. The coldest dipped to -29.8°C in 2003.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have risen by about 2.9°C. Daytime highs moved from 1.3°C to 4.7°C and overnight lows from -6.9°C to -4.4°C over the same span.
March is one of the cooler months of the year in Orillia and about average for rainfall, so plan for around 2.8°C daytime highs and -5.7°C at night.
Not quite — March is the 4th coolest month in Orillia, averaging -1.5°C.
For March in Orillia, pack warm layers and a jacket for chilly mornings, with typical highs of 2.8°C and lows of -5.7°C.
Relative humidity in March averages 82% — quite humid.
Average wind speed in March is 2.5 m/s. The windiest March on record averaged 3 m/s (2017).
The wettest March on record was 2002 with 150 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 Orillia 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.
