March is one of the cooler months of the year in Harrisburg, with average highs near 8.7°C and lows around -2.1°C (mean 3.3°C). It is about average for rainfall, averaging 84 mm of rainfall and 81% relative humidity across the period.
March is one of the cooler months of the year in Harrisburg. Across 45 years of records, the warmest March in Harrisburg was 2012 — when the month averaged 9°C — while the coldest was 1984 at -1°C. Typical March days reach 8.7°C with nights near -2.1°C. The long-term trend is warming, about 0.5°C per decade.
March is about average for rainfall in Harrisburg, averaging 84 mm of rainfall. The wettest March on record was 1993 with 161 mm, while the driest was 2006 at 23 mm.
Relative humidity in Harrisburg during March averages 81%. The most humid March was 1993 at 91%, and the least humid was 2025 at 74%.
March receives about 3.7 kWh/m²/day of solar energy in Harrisburg. The sunniest March was 1986 at 4.3 kWh/m²/day, and the cloudiest was 2001 at 3.2.
Average wind speed in Harrisburg during March is 0.9 m/s. The windiest Marchs were 1999 and 2017 at 1.1 m/s, while the calmest were 2009, 2012 and 2020, among others at 0.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 2.7°C | 2.6°C | 3.4°C | 3.2°C | 5.5°C | +2.8°C |
| Avg High | 8.1°C | 7.8°C | 8.9°C | 8.5°C | 11.3°C | +3.2°C |
| Avg Low | -2.8°C | -2.6°C | -2.0°C | -2.1°C | -0.4°C | +2.4°C |
| Avg Rain | 72 mm | 100 mm | 86 mm | 79 mm | 77 mm | +5 mm |
March temperatures in Harrisburg have risen by about 3.1°C between 1981–1985 and 2021–2025.
March has ranged from a record low of -22.6°C (1993) to a record high of 26.4°C (1998).
Rainfall in March is about average for rainfall, averaging 84 mm, with a wettest year of 161 mm.
A quieter season to visit Harrisburg
If your dates are flexible, the more temperate months of August and June tend to be the most comfortable for visiting Harrisburg. That said, March — with days averaging 8.7°C and nights around -2.1°C (mean 3.3°C) and higher rainfall (84 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 | 13.4°C | 6.5°C | -0.3°C | 25.8°C | -8.0°C | 52 mm | 74% | 1 m/s | 4.1 |
| 2024 | 11.2°C | 5.8°C | 0.4°C | 22.9°C | -4.9°C | 105 mm | 82% | 0.9 m/s | 3.8 |
| 2023 | 9.5°C | 4.1°C | -1.3°C | 16.5°C | -6.0°C | 66 mm | 79% | 1 m/s | 3.7 |
| 2022 | 10.7°C | 4.9°C | -0.9°C | 22.9°C | -9.1°C | 72 mm | 79% | 1 m/s | 3.6 |
| 2021 | 11.2°C | 5.1°C | -1.0°C | 20.3°C | -9.3°C | 67 mm | 77% | 1 m/s | 4.2 |
| 2020 | 11.9°C | 6.3°C | 0.6°C | 21.9°C | -7.3°C | 98 mm | 81% | 0.8 m/s | 3.5 |
| 2019 | 7.0°C | 1.8°C | -3.3°C | 20.4°C | -12.9°C | 97 mm | 83% | 0.9 m/s | 3.8 |
| 2018 | 5.8°C | 1.5°C | -2.9°C | 16.8°C | -6.8°C | 63 mm | 81% | 1 m/s | 3.5 |
| 2017 | 7.3°C | 2.3°C | -2.8°C | 19.6°C | -12.9°C | 104 mm | 78% | 1.1 m/s | 3.5 |
| 2016 | 12.6°C | 6.7°C | 0.7°C | 23.2°C | -5.0°C | 34 mm | 80% | 0.9 m/s | 3.8 |
| 2015 | 5.9°C | 0.6°C | -4.8°C | 18.6°C | -20.1°C | 77 mm | 80% | 0.9 m/s | 3.5 |
| 2014 | 5.7°C | 0.1°C | -5.4°C | 16.8°C | -14.8°C | 70 mm | 78% | 1 m/s | 3.9 |
| 2013 | 5.8°C | 1.4°C | -3.1°C | 13.2°C | -8.3°C | 58 mm | 81% | 1 m/s | 3.3 |
| 2012 🔥 | 14.8°C | 9.0°C | 3.2°C | 26.1°C | -5.3°C | 37 mm | 81% | 0.8 m/s | 3.9 |
| 2011 | 7.9°C | 2.6°C | -2.7°C | 20.6°C | -7.8°C | 158 mm | 83% | 0.9 m/s | 3.8 |
| 2010 | 11.8°C | 6.2°C | 0.5°C | 20.9°C | -5.8°C | 97 mm | 82% | 0.9 m/s | 3.7 |
| 2009 | 9.6°C | 3.9°C | -1.7°C | 19.0°C | -12.1°C | 34 mm | 79% | 0.8 m/s | 3.7 |
| 2008 | 8.3°C | 3.1°C | -2.2°C | 15.4°C | -8.4°C | 126 mm | 82% | 0.9 m/s | 3.7 |
| 2007 | 8.7°C | 3.0°C | -2.6°C | 22.6°C | -12.8°C | 97 mm | 84% | 1 m/s | 3.8 |
| 2006 | 9.2°C | 3.6°C | -1.9°C | 23.0°C | -7.4°C | 23 mm | 78% | 0.9 m/s | 4.2 |
| 2005 | 5.5°C | 0.7°C | -4.1°C | 14.1°C | -12.8°C | 106 mm | 86% | 0.9 m/s | 3.3 |
| 2004 | 10.1°C | 4.6°C | -0.8°C | 22.2°C | -5.2°C | 57 mm | 83% | 0.9 m/s | 3.6 |
| 2003 | 9.2°C | 3.3°C | -2.6°C | 20.3°C | -13.4°C | 91 mm | 85% | 0.9 m/s | 3.7 |
| 2002 | 9.4°C | 4.0°C | -1.3°C | 21.8°C | -8.3°C | 105 mm | 76% | 1 m/s | 3.4 |
| 2001 | 6.7°C | 1.7°C | -3.3°C | 12.0°C | -9.4°C | 105 mm | 80% | 1 m/s | 3.2 |
| 2000 | 12.4°C | 6.2°C | 0.0°C | 24.2°C | -6.8°C | 119 mm | 79% | 0.9 m/s | 3.6 |
| 1999 | 7.2°C | 1.7°C | -3.9°C | 19.5°C | -12.9°C | 80 mm | 79% | 1.1 m/s | 4.1 |
| 1998 | 9.0°C | 4.4°C | -0.2°C | 26.4°C | -9.1°C | 108 mm | 85% | 0.9 m/s | 3.9 |
| 1997 | 8.0°C | 3.1°C | -1.9°C | 19.3°C | -6.6°C | 95 mm | 82% | 1 m/s | 3.3 |
| 1996 | 5.6°C | 0.3°C | -5.0°C | 16.7°C | -14.5°C | 99 mm | 82% | 0.9 m/s | 3.6 |
| 1995 | 10.6°C | 4.3°C | -1.9°C | 20.3°C | -11.8°C | 35 mm | 79% | 0.9 m/s | 3.8 |
| 1994 | 5.2°C | 0.7°C | -3.8°C | 19.6°C | -10.1°C | 150 mm | 89% | 0.9 m/s | 3.8 |
| 1993 🌧️ | 5.0°C | 0.1°C | -4.7°C | 16.9°C | -22.6°C | 161 mm | 91% | 0.9 m/s | 3.4 |
| 1992 | 6.9°C | 2.0°C | -3.0°C | 16.7°C | -10.6°C | 123 mm | 82% | 1 m/s | 3.3 |
| 1991 | 9.4°C | 4.3°C | -0.8°C | 18.5°C | -7.2°C | 102 mm | 84% | 1 m/s | 3.4 |
| 1990 | 10.7°C | 4.9°C | -0.9°C | 23.7°C | -11.3°C | 47 mm | 80% | 0.8 m/s | 3.6 |
| 1989 | 7.8°C | 2.1°C | -3.5°C | 23.9°C | -16.1°C | 87 mm | 83% | 0.9 m/s | 3.4 |
| 1988 | 9.1°C | 3.4°C | -2.3°C | 20.7°C | -11.5°C | 53 mm | 79% | 0.9 m/s | 4 |
| 1987 | 10.3°C | 4.3°C | -1.7°C | 21.2°C | -10.9°C | 44 mm | 80% | 0.9 m/s | 4.2 |
| 1986 | 9.4°C | 3.1°C | -3.1°C | 23.0°C | -13.0°C | 77 mm | 81% | 0.9 m/s | 4.3 |
| 1985 | 9.4°C | 3.7°C | -2.0°C | 22.0°C | -6.4°C | 78 mm | 77% | 1 m/s | 3.7 |
| 1984 ❄️ | 3.5°C | -1.0°C | -5.6°C | 13.3°C | -14.6°C | 111 mm | 87% | 1 m/s | 3.9 |
| 1983 | 9.0°C | 4.0°C | -1.1°C | 15.7°C | -7.7°C | 100 mm | 80% | 1 m/s | — |
| 1982 | 7.6°C | 2.4°C | -2.9°C | 16.5°C | -10.2°C | 64 mm | 83% | 0.9 m/s | — |
| 1981 | 7.2°C | 1.9°C | -3.3°C | 21.6°C | -9.2°C | 32 mm | 78% | 1 m/s | — |
Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.
The average high in March is around 8.7°C with lows near -2.1°C (mean 3.3°C), based on 45 years of NASA POWER data.
March averages 84 mm of rainfall in Harrisburg, about average for rainfall. The wettest on record was 161 mm in 1993.
The hottest March reached 26.4°C in 1998. The coldest dipped to -22.6°C in 1993.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have risen by about 3.1°C. Daytime highs moved from 7.3°C to 11.2°C and overnight lows from -3°C to -0.6°C over the same span.
March is one of the cooler months of the year in Harrisburg and about average for rainfall, so plan for around 8.7°C daytime highs and -2.1°C at night.
Not quite — March is the 4th coolest month in Harrisburg, averaging 3.3°C.
For March in Harrisburg, pack warm layers and a jacket for chilly mornings, with typical highs of 8.7°C and lows of -2.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in March averages 81% — quite humid.
Average wind speed in March is 0.9 m/s. The windiest March on record averaged 1.1 m/s (1999).
The wettest March on record was 1993 with 161 mm. On average, March sees 84 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 Harrisburg 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.
