March is one of the cooler months of the year in Fredericton, with average highs near 1°C and lows around -8.3°C (mean -3.6°C). It is about average for rainfall, averaging 85 mm of rainfall and 88% relative humidity across the period.
March is one of the cooler months of the year in Fredericton. Across 45 years of records, the warmest Marchs in Fredericton were 2010 and 2012 — when the month averaged 0°C — while the coldest was 2014 at -8.8°C. Typical March days reach 1°C with nights near -8.3°C. The long-term trend is warming, about 0.5°C per decade.
March is about average for rainfall in Fredericton, averaging 85 mm of rainfall. The wettest March on record was 2024 with 198 mm, while the driest was 2006 at 32 mm.
Relative humidity in Fredericton during March averages 88%. The most humid March was 2003 at 98%, and the least humid was 2002 at 77%.
March receives about 3.5 kWh/m²/day of solar energy in Fredericton. The sunniest March was 2021 at 4.1 kWh/m²/day, and the cloudiest was 2024 at 2.9.
Average wind speed in Fredericton during March is 0.4 m/s. The windiest Marchs were 2021, 2022 and 2024, among others at 0.4 m/s, while the calmest were 2019, 2023 and 2025, among others at 0.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | -4.5°C | -4.1°C | -3.5°C | -3.5°C | -1.9°C | +2.6°C |
| Avg High | 0.1°C | 0.5°C | 1.3°C | 1.1°C | 2.8°C | +2.7°C |
| Avg Low | -9.2°C | -8.7°C | -8.3°C | -8.1°C | -6.4°C | +2.8°C |
| Avg Rain | 79 mm | 91 mm | 90 mm | 80 mm | 89 mm | +10 mm |
March temperatures in Fredericton have risen by about 2.8°C between 1981–1985 and 2021–2025.
March has ranged from a record low of -31.4°C (1982) to a record high of 22°C (2012).
Rainfall in March is about average for rainfall, averaging 85 mm, with a wettest year of 198 mm.
A quieter season to visit Fredericton
If your dates are flexible, the more temperate months of July and August tend to be the most comfortable for visiting Fredericton. That said, March — with days averaging 1°C and nights around -8.3°C (mean -3.6°C) and higher rainfall (85 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 | 3.8°C | -1.2°C | -6.2°C | 15.0°C | -20.2°C | 104 mm | 84% | 0.3 m/s | 3.3 |
| 2024 🌧️ | 3.3°C | -0.5°C | -4.3°C | 12.3°C | -13.7°C | 198 mm | 90% | 0.4 m/s | 2.9 |
| 2023 | 3.0°C | -1.3°C | -5.5°C | 7.8°C | -14.5°C | 42 mm | 84% | 0.3 m/s | 3.4 |
| 2022 | 1.5°C | -2.7°C | -7.0°C | 12.2°C | -22.6°C | 88 mm | 87% | 0.4 m/s | 3.2 |
| 2021 | 3.3°C | -2.4°C | -8.0°C | 16.2°C | -18.6°C | 46 mm | 82% | 0.4 m/s | 4.1 |
| 2020 | 1.8°C | -3.0°C | -7.7°C | 9.4°C | -17.4°C | 52 mm | 85% | 0.4 m/s | 3.7 |
| 2019 | 0.2°C | -4.4°C | -9.1°C | 13.4°C | -21.3°C | 61 mm | 89% | 0.3 m/s | 3.8 |
| 2018 | 1.5°C | -1.9°C | -5.3°C | 9.8°C | -15.9°C | 75 mm | 87% | 0.4 m/s | 3.1 |
| 2017 | -0.7°C | -5.6°C | -10.6°C | 7.0°C | -20.4°C | 60 mm | 80% | 0.4 m/s | 3.6 |
| 2016 | 1.2°C | -3.5°C | -8.1°C | 7.6°C | -20.3°C | 102 mm | 87% | 0.4 m/s | 3.1 |
| 2015 | -1.4°C | -6.5°C | -11.7°C | 5.2°C | -27.7°C | 40 mm | 90% | 0.4 m/s | 3.4 |
| 2014 ❄️ | -3.6°C | -8.8°C | -14.0°C | 4.2°C | -27.7°C | 116 mm | 95% | 0.4 m/s | 3.5 |
| 2013 | 2.6°C | -1.0°C | -4.7°C | 9.9°C | -14.8°C | 87 mm | 87% | 0.3 m/s | 3.3 |
| 2012 | 4.9°C | 0.0°C | -4.8°C | 22.0°C | -17.1°C | 56 mm | 87% | 0.3 m/s | 3.5 |
| 2011 | 1.7°C | -3.1°C | -8.0°C | 11.9°C | -26.5°C | 100 mm | 86% | 0.4 m/s | 3.8 |
| 2010 🔥 | 4.6°C | 0.0°C | -4.6°C | 13.6°C | -14.0°C | 100 mm | 84% | 0.4 m/s | 3.7 |
| 2009 | 1.5°C | -3.7°C | -8.9°C | 13.0°C | -22.4°C | 70 mm | 87% | 0.3 m/s | 3.7 |
| 2008 | -1.4°C | -6.8°C | -12.2°C | 4.6°C | -22.4°C | 120 mm | 95% | 0.4 m/s | 3.3 |
| 2007 | 0.9°C | -3.8°C | -8.5°C | 8.6°C | -22.1°C | 88 mm | 88% | 0.4 m/s | 3.5 |
| 2006 | 2.9°C | -1.5°C | -5.8°C | 13.2°C | -16.5°C | 32 mm | 85% | 0.3 m/s | 3.7 |
| 2005 | 1.5°C | -3.0°C | -7.5°C | 8.3°C | -17.4°C | 112 mm | 86% | 0.4 m/s | 3.7 |
| 2004 | 2.1°C | -2.5°C | -7.2°C | 11.2°C | -15.7°C | 53 mm | 82% | 0.3 m/s | 3.7 |
| 2003 | -1.5°C | -6.4°C | -11.2°C | 10.3°C | -25.4°C | 135 mm | 98% | 0.3 m/s | 3.2 |
| 2002 | 2.4°C | -2.6°C | -7.6°C | 12.6°C | -12.9°C | 104 mm | 77% | 0.4 m/s | 3.4 |
| 2001 | -0.3°C | -4.5°C | -8.6°C | 9.9°C | -26.7°C | 80 mm | 93% | 0.4 m/s | 3.5 |
| 2000 | 4.6°C | -0.2°C | -5.1°C | 12.8°C | -16.1°C | 101 mm | 87% | 0.3 m/s | 3.6 |
| 1999 | 3.3°C | -0.6°C | -4.6°C | 16.2°C | -13.2°C | 132 mm | 88% | 0.4 m/s | 3.4 |
| 1998 | 2.3°C | -2.2°C | -6.8°C | 16.8°C | -17.1°C | 91 mm | 91% | 0.4 m/s | 3.4 |
| 1997 | -3.0°C | -7.4°C | -11.7°C | 5.1°C | -26.0°C | 87 mm | 95% | 0.4 m/s | 3.7 |
| 1996 | 0.8°C | -3.8°C | -8.4°C | 9.0°C | -20.3°C | 67 mm | 86% | 0.3 m/s | 3.6 |
| 1995 | 1.4°C | -3.2°C | -7.7°C | 9.7°C | -22.6°C | 76 mm | 90% | 0.3 m/s | 3 |
| 1994 | 0.0°C | -3.9°C | -7.7°C | 6.0°C | -22.8°C | 127 mm | 94% | 0.3 m/s | 3.2 |
| 1993 | -0.6°C | -5.8°C | -11.1°C | 16.1°C | -24.1°C | 74 mm | 96% | 0.4 m/s | 3.6 |
| 1992 | -2.1°C | -7.3°C | -12.5°C | 8.7°C | -25.5°C | 62 mm | 93% | 0.3 m/s | 4 |
| 1991 | 1.5°C | -3.0°C | -7.6°C | 8.7°C | -16.5°C | 138 mm | 92% | 0.4 m/s | 3.6 |
| 1990 | 1.3°C | -3.7°C | -8.7°C | 11.0°C | -23.3°C | 55 mm | 85% | 0.3 m/s | 3.8 |
| 1989 | -0.4°C | -5.9°C | -11.4°C | 16.1°C | -27.8°C | 65 mm | 89% | 0.4 m/s | 3.7 |
| 1988 | 0.8°C | -4.8°C | -10.3°C | 11.3°C | -21.5°C | 41 mm | 89% | 0.3 m/s | 3.7 |
| 1987 | 0.5°C | -3.7°C | -8.0°C | 13.7°C | -22.1°C | 74 mm | 96% | 0.4 m/s | 3.1 |
| 1986 | 1.2°C | -4.2°C | -9.6°C | 16.4°C | -20.3°C | 100 mm | 88% | 0.4 m/s | 3.6 |
| 1985 | 0.3°C | -4.6°C | -9.5°C | 12.4°C | -22.5°C | 59 mm | 83% | 0.4 m/s | 3.9 |
| 1984 | -3.3°C | -7.2°C | -11.2°C | 3.3°C | -26.6°C | 111 mm | 93% | 0.4 m/s | 3.6 |
| 1983 | 1.8°C | -2.4°C | -6.5°C | 11.2°C | -18.2°C | 110 mm | 89% | 0.4 m/s | — |
| 1982 | -2.0°C | -6.4°C | -10.7°C | 4.3°C | -31.4°C | 63 mm | 98% | 0.3 m/s | — |
| 1981 | 2.3°C | -1.5°C | -5.3°C | 10.1°C | -11.5°C | 87 mm | 87% | 0.4 m/s | — |
Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.
The average high in March is around 1°C with lows near -8.3°C (mean -3.6°C), based on 45 years of NASA POWER data.
March averages 85 mm of rainfall in Fredericton, about average for rainfall. The wettest on record was 198 mm in 2024.
The hottest March reached 22°C in 2012. The coldest dipped to -31.4°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have risen by about 2.8°C. Daytime highs moved from -0.2°C to 3°C and overnight lows from -8.6°C to -6.2°C over the same span.
March is one of the cooler months of the year in Fredericton and about average for rainfall, so plan for around 1°C daytime highs and -8.3°C at night.
Not quite — March is the 4th coolest month in Fredericton, averaging -3.6°C.
For March in Fredericton, pack warm layers and a jacket for chilly mornings, with typical highs of 1°C and lows of -8.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in March averages 88% — quite humid.
Average wind speed in March is 0.4 m/s. The windiest March on record averaged 0.4 m/s (1981).
The wettest March on record was 2024 with 198 mm. On average, March sees 85 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 Fredericton 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.
