March is one of the cooler months of the year in Downingtown, with average highs near 9.7°C and lows around -1°C (mean 4.4°C). It is about average for rainfall, averaging 98 mm of rainfall and 81% relative humidity across the period.
March is one of the cooler months of the year in Downingtown. Across 45 years of records, the warmest March in Downingtown was 2012 — when the month averaged 9.2°C — while the coldest was 1984 at 0.1°C. Typical March days reach 9.7°C with nights near -1°C. The long-term trend is warming, about 0.5°C per decade.
March is about average for rainfall in Downingtown, averaging 98 mm of rainfall. The wettest March on record was 1993 with 192 mm, while the driest was 2006 at 18 mm.
Relative humidity in Downingtown during March averages 81%. The most humid Marchs were 1993 and 1994 at 89%, and the least humid was 2025 at 74%.
March receives about 3.7 kWh/m²/day of solar energy in Downingtown. The sunniest March was 2006 at 4.3 kWh/m²/day, and the cloudiest was 2001 at 3.2.
Average wind speed in Downingtown during March is 1 m/s. The windiest March was 1999 at 1.2 m/s, while the calmest were 2016, 2019 and 2020, among others at 0.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 3.7°C | 3.7°C | 4.5°C | 4.1°C | 6.5°C | +2.8°C |
| Avg High | 9.1°C | 8.8°C | 10.0°C | 9.2°C | 12.3°C | +3.2°C |
| Avg Low | -1.7°C | -1.4°C | -1.0°C | -1.1°C | 0.8°C | +2.5°C |
| Avg Rain | 79 mm | 117 mm | 93 mm | 100 mm | 99 mm | +20 mm |
March temperatures in Downingtown have risen by about 3.2°C between 1981–1985 and 2021–2025.
March has ranged from a record low of -18.9°C (2015) to a record high of 27.3°C (1998).
Rainfall in March is about average for rainfall, averaging 98 mm, with a wettest year of 192 mm.
A quieter season to visit Downingtown
If your dates are flexible, the more temperate months of June and August tend to be the most comfortable for visiting Downingtown. That said, March — with days averaging 9.7°C and nights around -1°C (mean 4.4°C) and higher rainfall (98 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 | 14.2°C | 7.6°C | 1.0°C | 26.2°C | -7.0°C | 96 mm | 74% | 1.1 m/s | 4 |
| 2024 | 12.3°C | 6.9°C | 1.6°C | 23.5°C | -4.3°C | 167 mm | 82% | 1 m/s | 3.7 |
| 2023 | 10.7°C | 5.3°C | -0.2°C | 17.2°C | -5.0°C | 59 mm | 78% | 1 m/s | 3.7 |
| 2022 | 11.5°C | 6.0°C | 0.4°C | 22.4°C | -7.6°C | 70 mm | 78% | 1 m/s | 3.6 |
| 2021 | 11.8°C | 6.0°C | 0.1°C | 22.4°C | -7.2°C | 104 mm | 79% | 1 m/s | 4.2 |
| 2020 | 13.0°C | 7.4°C | 1.9°C | 22.3°C | -4.8°C | 97 mm | 81% | 0.9 m/s | 3.5 |
| 2019 | 7.9°C | 2.7°C | -2.5°C | 20.4°C | -12.4°C | 116 mm | 84% | 0.9 m/s | 3.8 |
| 2018 | 6.9°C | 2.5°C | -1.9°C | 18.7°C | -5.2°C | 106 mm | 82% | 1.1 m/s | 3.6 |
| 2017 | 8.0°C | 3.0°C | -1.9°C | 20.9°C | -10.8°C | 119 mm | 77% | 1.1 m/s | 3.6 |
| 2016 | 13.3°C | 7.5°C | 1.7°C | 24.6°C | -5.4°C | 56 mm | 81% | 0.9 m/s | 3.9 |
| 2015 | 6.2°C | 1.0°C | -4.2°C | 17.7°C | -18.9°C | 136 mm | 83% | 0.9 m/s | 3.4 |
| 2014 | 6.3°C | 1.0°C | -4.3°C | 16.0°C | -14.0°C | 87 mm | 81% | 1 m/s | 3.7 |
| 2013 | 7.2°C | 2.6°C | -1.9°C | 14.0°C | -4.2°C | 69 mm | 80% | 1 m/s | 3.4 |
| 2012 🔥 | 14.7°C | 9.2°C | 3.6°C | 25.4°C | -5.4°C | 25 mm | 82% | 0.9 m/s | 4 |
| 2011 | 9.2°C | 4.0°C | -1.2°C | 21.9°C | -6.7°C | 140 mm | 81% | 1 m/s | 3.8 |
| 2010 | 12.3°C | 7.0°C | 1.7°C | 21.4°C | -4.7°C | 150 mm | 85% | 1 m/s | 3.5 |
| 2009 | 10.1°C | 4.7°C | -0.8°C | 21.3°C | -12.0°C | 41 mm | 80% | 0.9 m/s | 3.7 |
| 2008 | 10.6°C | 4.8°C | -0.9°C | 17.8°C | -4.8°C | 105 mm | 81% | 1 m/s | 3.7 |
| 2007 | 9.6°C | 3.8°C | -2.0°C | 22.8°C | -12.0°C | 113 mm | 83% | 1 m/s | 3.8 |
| 2006 | 10.0°C | 4.7°C | -0.6°C | 20.8°C | -5.8°C | 18 mm | 77% | 0.9 m/s | 4.3 |
| 2005 | 6.9°C | 2.0°C | -2.9°C | 15.7°C | -10.2°C | 97 mm | 83% | 0.9 m/s | 3.3 |
| 2004 | 10.6°C | 5.3°C | 0.0°C | 20.6°C | -5.6°C | 69 mm | 83% | 0.9 m/s | 3.5 |
| 2003 | 10.1°C | 4.4°C | -1.3°C | 20.4°C | -11.2°C | 104 mm | 86% | 0.9 m/s | 3.8 |
| 2002 | 11.6°C | 5.8°C | 0.0°C | 21.5°C | -7.5°C | 107 mm | 74% | 1 m/s | 3.4 |
| 2001 | 7.8°C | 2.8°C | -2.2°C | 13.2°C | -6.9°C | 128 mm | 80% | 1 m/s | 3.2 |
| 2000 | 13.1°C | 7.0°C | 0.8°C | 24.4°C | -6.1°C | 150 mm | 80% | 1 m/s | 3.9 |
| 1999 | 8.8°C | 3.3°C | -2.3°C | 18.5°C | -9.1°C | 98 mm | 77% | 1.2 m/s | 4.1 |
| 1998 | 9.9°C | 5.5°C | 1.0°C | 27.3°C | -7.3°C | 128 mm | 84% | 1 m/s | 3.7 |
| 1997 | 9.4°C | 4.3°C | -0.8°C | 19.6°C | -5.6°C | 127 mm | 83% | 1.1 m/s | 3.5 |
| 1996 | 6.1°C | 1.1°C | -4.0°C | 16.3°C | -13.9°C | 115 mm | 83% | 1 m/s | 3.7 |
| 1995 | 11.4°C | 5.3°C | -0.7°C | 20.9°C | -11.0°C | 57 mm | 80% | 0.9 m/s | 4 |
| 1994 | 6.6°C | 2.1°C | -2.4°C | 19.5°C | -8.2°C | 175 mm | 89% | 1 m/s | 3.7 |
| 1993 🌧️ | 6.4°C | 1.7°C | -3.0°C | 17.3°C | -17.4°C | 192 mm | 89% | 0.9 m/s | 3.4 |
| 1992 | 7.8°C | 2.8°C | -2.1°C | 17.6°C | -10.0°C | 105 mm | 81% | 1 m/s | 3.5 |
| 1991 | 10.6°C | 5.4°C | 0.1°C | 19.1°C | -5.4°C | 116 mm | 83% | 1 m/s | 3.4 |
| 1990 | 11.2°C | 5.8°C | 0.3°C | 24.4°C | -9.4°C | 61 mm | 81% | 0.9 m/s | 3.7 |
| 1989 | 8.6°C | 3.3°C | -2.0°C | 24.2°C | -12.3°C | 104 mm | 84% | 0.9 m/s | 3.4 |
| 1988 | 10.1°C | 4.4°C | -1.3°C | 20.7°C | -7.3°C | 58 mm | 79% | 0.9 m/s | 4 |
| 1987 | 10.7°C | 5.1°C | -0.5°C | 21.0°C | -7.4°C | 48 mm | 81% | 0.9 m/s | 4.1 |
| 1986 | 10.3°C | 4.2°C | -1.9°C | 21.7°C | -11.9°C | 49 mm | 81% | 1 m/s | 4.2 |
| 1985 | 10.5°C | 4.8°C | -0.9°C | 21.6°C | -6.7°C | 55 mm | 75% | 1.1 m/s | 4 |
| 1984 ❄️ | 4.6°C | 0.1°C | -4.3°C | 14.8°C | -13.3°C | 135 mm | 86% | 1 m/s | 3.6 |
| 1983 | 10.0°C | 5.0°C | -0.1°C | 17.7°C | -5.8°C | 156 mm | 82% | 1.1 m/s | — |
| 1982 | 8.7°C | 3.4°C | -1.9°C | 18.1°C | -7.7°C | 66 mm | 82% | 0.9 m/s | — |
| 1981 | 8.1°C | 2.9°C | -2.3°C | 21.5°C | -7.5°C | 42 mm | 77% | 1 m/s | — |
Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.
The average high in March is around 9.7°C with lows near -1°C (mean 4.4°C), based on 45 years of NASA POWER data.
March averages 98 mm of rainfall in Downingtown, about average for rainfall. The wettest on record was 192 mm in 1993.
The hottest March reached 27.3°C in 1998. The coldest dipped to -18.9°C in 2015.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have risen by about 3.2°C. Daytime highs moved from 8.4°C to 12.1°C and overnight lows from -1.9°C to 0.6°C over the same span.
March is one of the cooler months of the year in Downingtown and about average for rainfall, so plan for around 9.7°C daytime highs and -1°C at night.
Not quite — March is the 4th coolest month in Downingtown, averaging 4.4°C.
For March in Downingtown, pack warm layers and a jacket for chilly mornings, with typical highs of 9.7°C and lows of -1°C. Bring an umbrella or light rain jacket too.
Relative humidity in March averages 81% — quite humid.
Average wind speed in March is 1 m/s. The windiest March on record averaged 1.2 m/s (1999).
The wettest March on record was 1993 with 192 mm. On average, March sees 98 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 Downingtown 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.
