March is one of the cooler months of the year in Lynnwood, with average highs near 10.4°C and lows around 3.2°C (mean 6.8°C). It is a relatively wet time of year, averaging 131 mm of rainfall and 84% relative humidity across the period.
March is one of the cooler months of the year in Lynnwood. Across 45 years of records, the warmest March in Lynnwood was 1992 — when the month averaged 10°C — while the coldest was 2009 at 4.3°C. Typical March days reach 10.4°C with nights near 3.2°C. The long-term trend is cooling, about 0.2°C per decade.
March is a relatively wet time of year in Lynnwood, averaging 131 mm of rainfall. The wettest March on record was 2014 with 251 mm, while the driest was 2019 at 35 mm.
Relative humidity in Lynnwood during March averages 84%. The most humid March was 2025 at 92%, and the least humid was 2019 at 78%.
March receives about 2.9 kWh/m²/day of solar energy in Lynnwood. The sunniest March was 2019 at 3.7 kWh/m²/day, and the cloudiest was 2017 at 2.3.
Average wind speed in Lynnwood during March is 0.7 m/s. The windiest Marchs were 1999, 2012 and 2016, among others at 0.9 m/s, while the calmest was 1992 at 0.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 7.0°C | 7.2°C | 6.4°C | 6.9°C | 6.4°C | -0.6°C |
| Avg High | 10.8°C | 11.0°C | 9.9°C | 10.3°C | 9.7°C | -1.1°C |
| Avg Low | 3.3°C | 3.4°C | 3.0°C | 3.4°C | 3.0°C | -0.3°C |
| Avg Rain | 131 mm | 117 mm | 127 mm | 157 mm | 118 mm | -13 mm |
March temperatures in Lynnwood have fallen by about 0.6°C between 1981–1985 and 2021–2025.
March has ranged from a record low of -4.9°C (1989) to a record high of 23.4°C (1994).
Rainfall in March is a relatively wet time of year, averaging 131 mm, with a wettest year of 251 mm.
A good time to visit Lynnwood
March is a good time to visit Lynnwood, with days averaging 10.4°C and nights around 3.2°C (mean 6.8°C, cooler than Lynnwood's yearly average) and higher rainfall. August and July 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 | 8.8°C | 6.1°C | 3.5°C | 15.1°C | 0.6°C | 204 mm | 92% | 0.7 m/s | 2.6 |
| 2024 | 10.8°C | 7.5°C | 4.1°C | 22.6°C | -0.8°C | 101 mm | 86% | 0.7 m/s | 3.1 |
| 2023 | 9.2°C | 5.7°C | 2.2°C | 15.6°C | -0.7°C | 107 mm | 85% | 0.7 m/s | 3 |
| 2022 | 10.6°C | 7.2°C | 3.8°C | 18.1°C | -1.8°C | 108 mm | 87% | 0.6 m/s | 2.9 |
| 2021 | 9.9°C | 6.1°C | 2.4°C | 14.8°C | -1.0°C | 89 mm | 83% | 0.8 m/s | 3.3 |
| 2020 | 8.9°C | 5.6°C | 2.2°C | 14.1°C | -3.6°C | 100 mm | 84% | 0.7 m/s | 3.2 |
| 2019 | 11.3°C | 7.0°C | 2.6°C | 20.0°C | -4.1°C | 35 mm | 78% | 0.6 m/s | 3.7 |
| 2018 | 10.0°C | 6.3°C | 2.5°C | 15.7°C | -0.9°C | 87 mm | 85% | 0.7 m/s | 3.1 |
| 2017 | 8.9°C | 6.1°C | 3.4°C | 13.1°C | 0.2°C | 239 mm | 91% | 0.8 m/s | 2.3 |
| 2016 | 11.4°C | 8.0°C | 4.6°C | 18.7°C | 0.0°C | 191 mm | 85% | 0.9 m/s | 2.9 |
| 2015 | 12.9°C | 9.3°C | 5.7°C | 19.2°C | -1.0°C | 131 mm | 83% | 0.6 m/s | 3.1 |
| 2014 🌧️ | 10.6°C | 7.1°C | 3.6°C | 15.4°C | -1.3°C | 251 mm | 86% | 0.7 m/s | 2.8 |
| 2013 | 10.3°C | 6.8°C | 3.2°C | 19.0°C | -0.5°C | 120 mm | 84% | 0.6 m/s | 2.9 |
| 2012 | 8.1°C | 5.1°C | 2.1°C | 13.5°C | -1.8°C | 198 mm | 86% | 0.9 m/s | 2.6 |
| 2011 | 9.1°C | 6.0°C | 3.0°C | 13.5°C | -0.3°C | 213 mm | 89% | 0.8 m/s | 2.4 |
| 2010 | 10.8°C | 7.1°C | 3.4°C | 16.2°C | -1.9°C | 103 mm | 83% | 0.7 m/s | 3.1 |
| 2009 ❄️ | 7.6°C | 4.3°C | 0.9°C | 12.4°C | -4.0°C | 135 mm | 83% | 0.8 m/s | 2.8 |
| 2008 | 8.4°C | 5.1°C | 1.8°C | 12.4°C | -0.9°C | 108 mm | 85% | 0.7 m/s | 2.7 |
| 2007 | 10.8°C | 7.4°C | 4.0°C | 16.7°C | -1.9°C | 181 mm | 87% | 0.7 m/s | 2.6 |
| 2006 | 10.1°C | 6.3°C | 2.5°C | 15.2°C | -2.0°C | 95 mm | 83% | 0.8 m/s | 2.9 |
| 2005 | 12.5°C | 8.5°C | 4.5°C | 18.8°C | 0.2°C | 114 mm | 84% | 0.7 m/s | 3.1 |
| 2004 | 11.5°C | 7.8°C | 4.2°C | 19.1°C | 1.5°C | 102 mm | 85% | 0.7 m/s | 3 |
| 2003 | 10.5°C | 7.4°C | 4.3°C | 17.5°C | 0.1°C | 191 mm | 87% | 0.8 m/s | 2.6 |
| 2002 | 7.6°C | 4.6°C | 1.6°C | 15.8°C | -2.7°C | 136 mm | 86% | 0.7 m/s | 2.6 |
| 2001 | 10.8°C | 6.8°C | 2.9°C | 17.9°C | 0.0°C | 103 mm | 85% | 0.7 m/s | 2.9 |
| 2000 | 9.6°C | 6.2°C | 2.9°C | 13.5°C | -0.1°C | 101 mm | 86% | 0.8 m/s | 3 |
| 1999 | 9.2°C | 5.9°C | 2.6°C | 19.1°C | -1.1°C | 130 mm | 86% | 0.9 m/s | 2.8 |
| 1998 | 10.8°C | 7.5°C | 4.3°C | 16.8°C | 0.4°C | 113 mm | 85% | 0.7 m/s | 3 |
| 1997 | 9.1°C | 6.1°C | 3.1°C | 15.4°C | -0.4°C | 233 mm | 87% | 0.9 m/s | 2.6 |
| 1996 | 10.7°C | 6.8°C | 2.8°C | 16.3°C | -1.5°C | 66 mm | 81% | 0.7 m/s | 3.1 |
| 1995 | 10.8°C | 7.1°C | 3.4°C | 18.4°C | -2.1°C | 153 mm | 81% | 0.8 m/s | 3 |
| 1994 | 12.1°C | 8.0°C | 3.9°C | 23.4°C | -1.2°C | 96 mm | 80% | 0.7 m/s | 3.1 |
| 1993 | 11.4°C | 7.4°C | 3.5°C | 14.6°C | 0.1°C | 119 mm | 83% | 0.7 m/s | 2.9 |
| 1992 🔥 | 14.6°C | 10.0°C | 5.4°C | 19.2°C | 2.2°C | 39 mm | 79% | 0.5 m/s | 3.5 |
| 1991 | 9.5°C | 5.7°C | 1.8°C | 18.2°C | -1.9°C | 119 mm | 84% | 0.7 m/s | 3.1 |
| 1990 | 11.5°C | 7.4°C | 3.4°C | 16.0°C | -1.3°C | 99 mm | 83% | 0.6 m/s | 3.1 |
| 1989 | 8.5°C | 5.3°C | 2.2°C | 12.4°C | -4.9°C | 177 mm | 88% | 0.8 m/s | 2.5 |
| 1988 | 10.2°C | 6.4°C | 2.7°C | 16.5°C | 0.1°C | 174 mm | 83% | 0.8 m/s | 2.9 |
| 1987 | 11.7°C | 7.9°C | 4.1°C | 19.2°C | -0.5°C | 146 mm | 84% | 0.7 m/s | 3.1 |
| 1986 | 12.0°C | 8.2°C | 4.4°C | 17.0°C | 0.7°C | 94 mm | 85% | 0.7 m/s | 2.8 |
| 1985 | 9.4°C | 5.6°C | 1.7°C | 15.2°C | -0.9°C | 95 mm | 82% | 0.8 m/s | 3.3 |
| 1984 | 11.4°C | 7.9°C | 4.3°C | 17.5°C | 1.0°C | 123 mm | 86% | 0.6 m/s | 3.1 |
| 1983 | 12.0°C | 8.3°C | 4.6°C | 14.9°C | 1.7°C | 168 mm | 86% | 0.8 m/s | — |
| 1982 | 9.5°C | 5.8°C | 2.2°C | 13.6°C | -0.9°C | 105 mm | 83% | 0.7 m/s | — |
| 1981 | 12.2°C | 8.0°C | 3.8°C | 16.4°C | -1.1°C | 98 mm | 81% | 0.7 m/s | — |
Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.
The average high in March is around 10.4°C with lows near 3.2°C (mean 6.8°C), based on 45 years of NASA POWER data.
March averages 131 mm of rainfall in Lynnwood, a relatively wet time of year. The wettest on record was 251 mm in 2014.
The hottest March reached 23.4°C in 1994. The coldest dipped to -4.9°C in 1989.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have fallen by about 0.6°C. Daytime highs moved from 10.9°C to 9.9°C and overnight lows from 3.3°C to 3.2°C over the same span.
March is one of the cooler months of the year in Lynnwood and a relatively wet time of year, so plan for around 10.4°C daytime highs and 3.2°C at night.
Not quite — March is the 5th coolest month in Lynnwood, averaging 6.8°C.
For March in Lynnwood, pack warm layers and a jacket for chilly mornings, with typical highs of 10.4°C and lows of 3.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in March averages 84% — quite humid.
Average wind speed in March is 0.7 m/s. The windiest March on record averaged 0.9 m/s (1997).
The wettest March on record was 2014 with 251 mm. On average, March sees 131 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 Lynnwood 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.
