March is one of the cooler months of the year in Yellowknife, with average highs near -13.7°C and lows around -23.5°C (mean -18.6°C). It is one of the drier months, averaging 21 mm of rainfall and 95% relative humidity across the period.
March is one of the cooler months of the year in Yellowknife. Across 45 years of records, the warmest Marchs in Yellowknife were 1999 and 2010 — when the month averaged -12.1°C — while the coldest was 1989 at -25.6°C. Typical March days reach -13.7°C with nights near -23.5°C. The long-term trend is cooling, about 0.2°C per decade.
March is one of the drier months in Yellowknife, averaging 21 mm of rainfall. The wettest March on record was 2001 with 50 mm, while the driest was 2014 at 6 mm.
Relative humidity in Yellowknife during March averages 95%. The most humid March was 2019 at 96%, and the least humid was 1996 at 94%.
March receives about 2.7 kWh/m²/day of solar energy in Yellowknife. The sunniest March was 2025 at 3.1 kWh/m²/day, and the cloudiest were 1995, 2001 and 2006 at 2.2.
Average wind speed in Yellowknife during March is 3.3 m/s. The windiest March was 2001 at 4 m/s, while the calmest was 2025 at 2.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | -19.0°C | -17.5°C | -19.1°C | -17.9°C | -20.1°C | -1.1°C |
| Avg High | -14.0°C | -12.6°C | -14.2°C | -13.0°C | -15.1°C | -1.1°C |
| Avg Low | -24.0°C | -22.5°C | -24.0°C | -22.8°C | -25.1°C | -1.1°C |
| Avg Rain | 20 mm | 26 mm | 23 mm | 17 mm | 20 mm | 0 mm |
March temperatures in Yellowknife have fallen by about 1.4°C between 1981–1985 and 2021–2025.
March has ranged from a record low of -48.8°C (1991) to a record high of 1.5°C (1993).
Rainfall in March is one of the drier months, averaging 21 mm, with a wettest year of 50 mm.
A good time to visit Yellowknife
March is a good time to visit Yellowknife, with days averaging -13.7°C and nights around -23.5°C (mean -18.6°C, cooler than Yellowknife's yearly average) and low rainfall. July and August are marginally more temperate, but March still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | -16.6°C | -21.1°C | -25.6°C | -6.3°C | -36.0°C | 9 mm | 95% | 2.3 m/s | 3.1 |
| 2024 | -14.2°C | -19.1°C | -24.0°C | -2.1°C | -40.4°C | 19 mm | 96% | 3.5 m/s | 2.9 |
| 2023 | -15.9°C | -20.3°C | -24.7°C | -6.4°C | -37.3°C | 12 mm | 95% | 3.5 m/s | 3 |
| 2022 | -14.3°C | -19.5°C | -24.7°C | -1.4°C | -39.5°C | 21 mm | 95% | 3.1 m/s | 2.8 |
| 2021 | -14.3°C | -19.5°C | -24.7°C | -3.9°C | -34.6°C | 39 mm | 95% | 3.6 m/s | 2.8 |
| 2020 | -15.6°C | -21.3°C | -27.0°C | -1.9°C | -40.5°C | 20 mm | 95% | 3.5 m/s | 2.5 |
| 2019 | -8.3°C | -12.7°C | -17.0°C | 0.7°C | -40.0°C | 14 mm | 96% | 3.3 m/s | 2.5 |
| 2018 | -12.4°C | -17.2°C | -21.9°C | -0.5°C | -37.5°C | 18 mm | 95% | 3.3 m/s | 2.8 |
| 2017 | -16.0°C | -21.2°C | -26.4°C | 0.9°C | -43.1°C | 36 mm | 96% | 3.6 m/s | 2.6 |
| 2016 | -11.7°C | -16.5°C | -21.3°C | 0.5°C | -35.9°C | 10 mm | 95% | 3 m/s | 2.5 |
| 2015 | -13.1°C | -19.1°C | -25.0°C | 0.1°C | -38.2°C | 21 mm | 95% | 3.3 m/s | 2.8 |
| 2014 | -17.4°C | -22.7°C | -28.0°C | -4.5°C | -40.2°C | 6 mm | 95% | 3.1 m/s | 2.9 |
| 2013 | -15.8°C | -20.9°C | -26.1°C | -5.0°C | -42.4°C | 11 mm | 95% | 3.2 m/s | 2.9 |
| 2012 | -12.6°C | -16.7°C | -20.8°C | 0.5°C | -37.1°C | 32 mm | 95% | 3.7 m/s | 2.5 |
| 2011 | -15.3°C | -19.9°C | -24.6°C | 0.5°C | -46.0°C | 9 mm | 95% | 3.1 m/s | 2.8 |
| 2010 | -7.4°C | -12.1°C | -16.9°C | 0.6°C | -34.9°C | 11 mm | 96% | 3.3 m/s | 2.8 |
| 2009 | -17.2°C | -22.2°C | -27.1°C | -3.4°C | -45.5°C | 24 mm | 94% | 3.7 m/s | 2.9 |
| 2008 | -17.2°C | -22.4°C | -27.6°C | -1.6°C | -48.2°C | 10 mm | 95% | 3.3 m/s | 3 |
| 2007 | -16.5°C | -21.7°C | -26.9°C | -0.1°C | -42.6°C | 25 mm | 95% | 3.3 m/s | 2.7 |
| 2006 | -8.7°C | -12.3°C | -16.0°C | 0.6°C | -32.1°C | 30 mm | 96% | 3.8 m/s | 2.2 |
| 2005 | -10.9°C | -15.7°C | -20.5°C | 0.7°C | -30.7°C | 18 mm | 95% | 3.3 m/s | 2.7 |
| 2004 | -15.0°C | -20.8°C | -26.5°C | 0.7°C | -44.7°C | 18 mm | 94% | 3.6 m/s | 2.4 |
| 2003 | -15.8°C | -20.9°C | -26.0°C | -1.3°C | -44.0°C | 20 mm | 95% | 3.2 m/s | 2.6 |
| 2002 | -16.9°C | -21.9°C | -26.9°C | -0.9°C | -38.9°C | 10 mm | 95% | 2.8 m/s | 3 |
| 2001 🌧️ | -12.6°C | -17.0°C | -21.3°C | 0.0°C | -36.8°C | 50 mm | 95% | 4 m/s | 2.2 |
| 2000 | -11.0°C | -16.0°C | -21.1°C | 0.9°C | -38.8°C | 21 mm | 96% | 3.1 m/s | 2.5 |
| 1999 🔥 | -8.6°C | -12.1°C | -15.5°C | 1.0°C | -29.4°C | 27 mm | 96% | 3.8 m/s | 2.4 |
| 1998 | -12.0°C | -16.8°C | -21.6°C | 0.7°C | -38.2°C | 14 mm | 95% | 3.7 m/s | 2.7 |
| 1997 | -16.6°C | -21.9°C | -27.3°C | -6.8°C | -42.2°C | 15 mm | 95% | 3 m/s | 2.8 |
| 1996 | -17.0°C | -22.6°C | -28.2°C | -6.2°C | -38.2°C | 23 mm | 94% | 3.6 m/s | 2.6 |
| 1995 | -15.1°C | -20.7°C | -26.3°C | -0.1°C | -42.8°C | 39 mm | 95% | 3.3 m/s | 2.2 |
| 1994 | -10.3°C | -15.5°C | -20.8°C | 0.4°C | -39.8°C | 32 mm | 95% | 3.7 m/s | 2.6 |
| 1993 | -9.9°C | -14.1°C | -18.4°C | 1.5°C | -33.3°C | 29 mm | 95% | 3.6 m/s | 2.5 |
| 1992 | -11.3°C | -16.2°C | -21.0°C | -0.4°C | -37.3°C | 31 mm | 96% | 3.6 m/s | 2.5 |
| 1991 | -14.9°C | -20.1°C | -25.3°C | -0.3°C | -48.8°C | 32 mm | 95% | 3.1 m/s | 2.5 |
| 1990 | -10.2°C | -15.4°C | -20.6°C | 0.4°C | -35.3°C | 18 mm | 95% | 3.9 m/s | 2.5 |
| 1989 ❄️ | -19.5°C | -25.6°C | -31.6°C | -4.4°C | -47.4°C | 17 mm | 94% | 3.3 m/s | 2.4 |
| 1988 | -10.0°C | -14.1°C | -18.3°C | -1.6°C | -31.4°C | 12 mm | 95% | 3.1 m/s | 2.7 |
| 1987 | -14.3°C | -19.0°C | -23.8°C | -0.9°C | -37.7°C | 25 mm | 96% | 3.1 m/s | 2.5 |
| 1986 | -14.8°C | -19.7°C | -24.7°C | -3.7°C | -36.8°C | 25 mm | 95% | 3.5 m/s | 2.6 |
| 1985 | -11.8°C | -17.0°C | -22.3°C | -1.6°C | -37.7°C | 19 mm | 96% | 3.3 m/s | 2.8 |
| 1984 | -14.0°C | -19.1°C | -24.1°C | 1.2°C | -46.5°C | 21 mm | 95% | 3.4 m/s | 2.6 |
| 1983 | -15.1°C | -19.5°C | -23.8°C | -3.9°C | -38.3°C | 23 mm | 96% | 3 m/s | — |
| 1982 | -17.6°C | -23.1°C | -28.7°C | -0.4°C | -42.3°C | 14 mm | 95% | 3 m/s | — |
| 1981 | -9.3°C | -14.0°C | -18.6°C | -1.3°C | -31.8°C | 23 mm | 96% | 3.2 m/s | — |
Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.
The average high in March is around -13.7°C with lows near -23.5°C (mean -18.6°C), based on 45 years of NASA POWER data.
March averages 21 mm of rainfall in Yellowknife, one of the drier months. The wettest on record was 50 mm in 2001.
The hottest March reached 1.5°C in 1993. The coldest dipped to -48.8°C in 1991.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have fallen by about 1.4°C. Daytime highs moved from -13.6°C to -15.1°C and overnight lows from -23.5°C to -24.7°C over the same span.
March is one of the cooler months of the year in Yellowknife and one of the drier months, so plan for around -13.7°C daytime highs and -23.5°C at night.
Not quite — March is the 5th coolest month in Yellowknife, averaging -18.6°C.
For March in Yellowknife, pack warm layers and a jacket for chilly mornings, with typical highs of -13.7°C and lows of -23.5°C.
Relative humidity in March averages 95% — quite humid.
Average wind speed in March is 3.3 m/s. The windiest March on record averaged 4 m/s (2001).
The wettest March on record was 2001 with 50 mm. On average, March sees 21 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 Yellowknife 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.
