March is one of the cooler months of the year in Pasadena, with average highs near 21°C and lows around 13.1°C (mean 17.1°C). It is one of the drier months, averaging 85 mm of rainfall and 82% relative humidity across the period.
March is one of the cooler months of the year in Pasadena. Across 45 years of records, the warmest March in Pasadena was 2020 — when the month averaged 20.6°C — while the coldest was 1996 at 14.1°C. Typical March days reach 21°C with nights near 13.1°C. The long-term trend is warming, about 0.5°C per decade.
March is one of the drier months in Pasadena, averaging 85 mm of rainfall. The wettest March on record was 2015 with 224 mm, while the driest was 1996 at 13 mm.
Relative humidity in Pasadena during March averages 82%. The most humid March was 1997 at 87%, and the least humid was 2013 at 73%.
March receives about 4.5 kWh/m²/day of solar energy in Pasadena. The sunniest March was 2013 at 5.4 kWh/m²/day, and the cloudiest were 1985 and 1995 at 3.7.
Average wind speed in Pasadena during March is 3.7 m/s. The windiest Marchs were 1998 and 2008 at 4.3 m/s, while the calmest was 2015 at 2.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 16.1°C | 16.6°C | 17.3°C | 17.3°C | 18.6°C | +2.5°C |
| Avg High | 20.2°C | 20.4°C | 21.2°C | 21.2°C | 22.6°C | +2.4°C |
| Avg Low | 12.0°C | 12.7°C | 13.4°C | 13.4°C | 14.6°C | +2.6°C |
| Avg Rain | 73 mm | 101 mm | 84 mm | 95 mm | 64 mm | -9 mm |
March temperatures in Pasadena have risen by about 1.7°C between 1981–1985 and 2021–2025.
March has ranged from a record low of -1.8°C (1989) to a record high of 28.9°C (2025).
Rainfall in March is one of the drier months, averaging 85 mm, with a wettest year of 224 mm.
A good time to visit Pasadena
March is a good time to visit Pasadena, with days averaging 21°C and nights around 13.1°C (mean 17.1°C, cooler than Pasadena's yearly average) and higher rainfall. April and October 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 | 23.4°C | 19.0°C | 14.7°C | 28.9°C | 7.6°C | 62 mm | 79% | 3.7 m/s | 5.1 |
| 2024 | 22.3°C | 18.6°C | 15.0°C | 25.5°C | 9.4°C | 114 mm | 84% | 3.3 m/s | 4 |
| 2023 | 23.1°C | 19.4°C | 15.7°C | 28.0°C | 6.5°C | 43 mm | 81% | 4 m/s | 4.1 |
| 2022 | 21.4°C | 16.5°C | 11.6°C | 26.9°C | 1.7°C | 79 mm | 75% | 3.8 m/s | 5.3 |
| 2021 | 21.7°C | 17.6°C | 13.4°C | 26.5°C | 6.9°C | 52 mm | 81% | 3.7 m/s | 4.5 |
| 2020 🔥 | 24.0°C | 20.6°C | 17.1°C | 27.9°C | 10.2°C | 32 mm | 86% | 3.6 m/s | 3.9 |
| 2019 | 19.8°C | 16.2°C | 12.5°C | 25.1°C | -0.2°C | 26 mm | 82% | 3.6 m/s | 3.9 |
| 2018 | 22.4°C | 18.8°C | 15.1°C | 26.0°C | 8.5°C | 92 mm | 79% | 3.8 m/s | 4.8 |
| 2017 | 22.7°C | 19.5°C | 16.2°C | 26.4°C | 7.2°C | 133 mm | 84% | 3.9 m/s | 4.7 |
| 2016 | 22.5°C | 18.8°C | 15.1°C | 27.0°C | 5.9°C | 131 mm | 84% | 3.8 m/s | 4.6 |
| 2015 🌧️ | 20.5°C | 16.8°C | 13.1°C | 24.6°C | 0.8°C | 224 mm | 86% | 2.8 m/s | 4 |
| 2014 | 18.7°C | 14.7°C | 10.6°C | 24.2°C | -1.3°C | 69 mm | 83% | 3.6 m/s | 4.2 |
| 2013 | 20.6°C | 16.0°C | 11.4°C | 26.3°C | 4.6°C | 22 mm | 73% | 3.7 m/s | 5.4 |
| 2012 | 23.4°C | 20.0°C | 16.5°C | 26.8°C | 8.3°C | 148 mm | 86% | 3.4 m/s | 4.2 |
| 2011 | 22.5°C | 18.2°C | 13.9°C | 27.3°C | 5.8°C | 56 mm | 81% | 3.5 m/s | 4.9 |
| 2010 | 18.7°C | 14.2°C | 9.7°C | 22.9°C | 2.3°C | 53 mm | 80% | 3.5 m/s | 5.2 |
| 2009 | 21.4°C | 17.3°C | 13.1°C | 25.6°C | 2.5°C | 95 mm | 80% | 3.6 m/s | 4.4 |
| 2008 | 20.9°C | 16.7°C | 12.5°C | 25.5°C | 3.5°C | 58 mm | 80% | 4.3 m/s | 4.6 |
| 2007 | 21.5°C | 18.2°C | 14.8°C | 24.9°C | 4.0°C | 167 mm | 84% | 3.3 m/s | 4.5 |
| 2006 | 22.9°C | 18.9°C | 14.9°C | 26.5°C | 4.3°C | 46 mm | 78% | 3.9 m/s | 4.4 |
| 2005 | 20.3°C | 16.2°C | 12.1°C | 24.9°C | 5.7°C | 84 mm | 83% | 3.3 m/s | 4.7 |
| 2004 | 21.9°C | 18.6°C | 15.3°C | 25.4°C | 10.5°C | 53 mm | 84% | 3.3 m/s | 4.3 |
| 2003 | 19.8°C | 15.9°C | 12.0°C | 23.0°C | 5.1°C | 47 mm | 86% | 3 m/s | 4.2 |
| 2002 | 20.3°C | 16.3°C | 12.2°C | 24.8°C | -1.0°C | 70 mm | 83% | 4.1 m/s | 4.3 |
| 2001 | 19.0°C | 14.8°C | 10.7°C | 24.3°C | 7.1°C | 181 mm | 81% | 3.4 m/s | 4.3 |
| 2000 | 24.0°C | 20.0°C | 15.9°C | 28.2°C | 7.1°C | 42 mm | 80% | 3.7 m/s | 4.7 |
| 1999 | 21.6°C | 17.9°C | 14.1°C | 25.5°C | 4.4°C | 79 mm | 81% | 3.9 m/s | 4.2 |
| 1998 | 19.5°C | 15.3°C | 11.2°C | 24.1°C | 1.9°C | 64 mm | 81% | 4.3 m/s | 4.6 |
| 1997 | 21.8°C | 18.0°C | 14.2°C | 25.6°C | 8.3°C | 182 mm | 87% | 3.5 m/s | 3.9 |
| 1996 ❄️ | 18.6°C | 14.1°C | 9.7°C | 25.3°C | 0.5°C | 13 mm | 74% | 3.9 m/s | 4.7 |
| 1995 | 20.2°C | 16.7°C | 13.1°C | 26.5°C | 2.0°C | 141 mm | 86% | 3.7 m/s | 3.7 |
| 1994 | 20.7°C | 16.6°C | 12.4°C | 24.9°C | 3.1°C | 65 mm | 81% | 3.5 m/s | 4.4 |
| 1993 | 19.6°C | 15.8°C | 12.0°C | 25.1°C | 0.8°C | 152 mm | 83% | 3.5 m/s | 4.4 |
| 1992 | 20.7°C | 17.0°C | 13.3°C | 24.5°C | 4.9°C | 123 mm | 85% | 3.7 m/s | 4.4 |
| 1991 | 21.0°C | 17.1°C | 13.1°C | 25.4°C | 6.7°C | 56 mm | 82% | 3.9 m/s | 4.5 |
| 1990 | 20.6°C | 17.3°C | 14.1°C | 23.4°C | 6.6°C | 135 mm | 83% | 3.9 m/s | 4.2 |
| 1989 | 19.9°C | 15.7°C | 11.5°C | 26.2°C | -1.8°C | 75 mm | 83% | 3.9 m/s | 4.6 |
| 1988 | 19.9°C | 15.6°C | 11.3°C | 26.5°C | 2.4°C | 137 mm | 80% | 4 m/s | 4.1 |
| 1987 | 19.1°C | 14.6°C | 10.1°C | 23.0°C | 2.7°C | 21 mm | 78% | 3.3 m/s | 5 |
| 1986 | 21.2°C | 16.9°C | 12.6°C | 25.2°C | 3.7°C | 36 mm | 76% | 3.1 m/s | 5.2 |
| 1985 | 21.3°C | 17.8°C | 14.2°C | 24.3°C | 9.3°C | 149 mm | 86% | 3.9 m/s | 3.7 |
| 1984 | 20.0°C | 15.9°C | 11.9°C | 26.4°C | 5.2°C | 43 mm | 82% | 3.7 m/s | 4.4 |
| 1983 | 19.3°C | 15.0°C | 10.7°C | 23.1°C | 3.7°C | 106 mm | 80% | 3.9 m/s | — |
| 1982 | 21.1°C | 17.6°C | 14.1°C | 26.1°C | 2.1°C | 46 mm | 86% | 3.7 m/s | — |
| 1981 | 20.1°C | 16.0°C | 11.9°C | 27.2°C | 4.6°C | 41 mm | 77% | 3.6 m/s | — |
Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.
The average high in March is around 21°C with lows near 13.1°C (mean 17.1°C), based on 45 years of NASA POWER data.
March averages 85 mm of rainfall in Pasadena, one of the drier months. The wettest on record was 224 mm in 2015.
The hottest March reached 28.9°C in 2025. The coldest dipped to -1.8°C in 1989.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have risen by about 1.7°C. Daytime highs moved from 20.4°C to 22.4°C and overnight lows from 12.6°C to 14.1°C over the same span.
March is one of the cooler months of the year in Pasadena and one of the drier months, so plan for around 21°C daytime highs and 13.1°C at night.
Not quite — March is the 4th coolest month in Pasadena, averaging 17.1°C.
For March in Pasadena, pack light layers you can adjust through the day, with typical highs of 21°C and lows of 13.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in March averages 82% — quite humid.
Average wind speed in March is 3.7 m/s. The windiest March on record averaged 4.3 m/s (1998).
The wettest March on record was 2015 with 224 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 Pasadena 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.
