March is one of the cooler months of the year in Johnstown, with average highs near 7.3°C and lows around -3.2°C (mean 2.1°C). It is about average for rainfall, averaging 83 mm of rainfall and 83% relative humidity across the period.
March is one of the cooler months of the year in Johnstown. Across 45 years of records, the warmest March in Johnstown was 2012 — when the month averaged 8.5°C — while the coldest was 1984 at -2.3°C. Typical March days reach 7.3°C with nights near -3.2°C. The long-term trend is warming, about 0.5°C per decade.
March is about average for rainfall in Johnstown, averaging 83 mm of rainfall. The wettest March on record was 1993 with 149 mm, while the driest was 2006 at 34 mm.
Relative humidity in Johnstown during March averages 83%. The most humid March was 1993 at 94%, and the least humid was 2021 at 76%.
March receives about 3.5 kWh/m²/day of solar energy in Johnstown. The sunniest Marchs were 1999 and 2021 at 4.1 kWh/m²/day, and the cloudiest was 2001 at 2.8.
Average wind speed in Johnstown during March is 0.6 m/s. The windiest Marchs were 2017, 2023 and 2025, among others at 0.7 m/s, while the calmest were 1990, 2010 and 2016 at 0.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 1.2°C | 1.3°C | 2.2°C | 1.9°C | 4.4°C | +3.2°C |
| Avg High | 6.6°C | 6.2°C | 7.5°C | 7.1°C | 10.1°C | +3.5°C |
| Avg Low | -4.1°C | -3.7°C | -3.1°C | -3.2°C | -1.4°C | +2.7°C |
| Avg Rain | 89 mm | 92 mm | 79 mm | 75 mm | 76 mm | -13 mm |
March temperatures in Johnstown have risen by about 3.4°C between 1981–1985 and 2021–2025.
March has ranged from a record low of -21.2°C (1993) to a record high of 24.7°C (2012).
Rainfall in March is about average for rainfall, averaging 83 mm, with a wettest year of 149 mm.
A quieter season to visit Johnstown
If your dates are flexible, the more temperate months of July and August tend to be the most comfortable for visiting Johnstown. That said, March — with days averaging 7.3°C and nights around -3.2°C (mean 2.1°C) and higher rainfall (83 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 | 11.3°C | 4.9°C | -1.6°C | 22.5°C | -9.5°C | 43 mm | 78% | 0.7 m/s | 3.9 |
| 2024 | 10.1°C | 5.1°C | 0.0°C | 20.7°C | -6.0°C | 95 mm | 83% | 0.6 m/s | 3.8 |
| 2023 | 7.9°C | 2.6°C | -2.8°C | 17.7°C | -8.4°C | 83 mm | 81% | 0.7 m/s | 3.5 |
| 2022 | 9.3°C | 3.7°C | -2.0°C | 20.7°C | -12.1°C | 64 mm | 82% | 0.6 m/s | 3.5 |
| 2021 | 10.8°C | 4.3°C | -2.2°C | 20.0°C | -11.4°C | 55 mm | 76% | 0.6 m/s | 4.1 |
| 2020 | 10.9°C | 5.5°C | 0.1°C | 21.0°C | -9.3°C | 114 mm | 83% | 0.6 m/s | 3.3 |
| 2019 | 5.7°C | 0.8°C | -4.0°C | 18.3°C | -13.1°C | 53 mm | 84% | 0.6 m/s | 3.7 |
| 2018 | 3.7°C | -0.7°C | -5.1°C | 16.4°C | -9.8°C | 70 mm | 85% | 0.6 m/s | 3.3 |
| 2017 | 6.1°C | 1.3°C | -3.5°C | 17.8°C | -13.9°C | 104 mm | 82% | 0.7 m/s | 3.2 |
| 2016 | 11.3°C | 5.4°C | -0.4°C | 20.1°C | -7.3°C | 44 mm | 82% | 0.5 m/s | 3.5 |
| 2015 | 5.3°C | -0.1°C | -5.6°C | 15.1°C | -18.3°C | 89 mm | 83% | 0.6 m/s | 3.4 |
| 2014 | 4.8°C | -1.0°C | -6.8°C | 16.1°C | -16.7°C | 50 mm | 78% | 0.6 m/s | 3.7 |
| 2013 | 3.4°C | -0.6°C | -4.5°C | 14.5°C | -11.5°C | 56 mm | 85% | 0.6 m/s | 2.9 |
| 2012 🔥 | 14.3°C | 8.5°C | 2.7°C | 24.7°C | -7.6°C | 67 mm | 83% | 0.6 m/s | 3.8 |
| 2011 | 6.5°C | 1.5°C | -3.5°C | 18.3°C | -10.3°C | 125 mm | 83% | 0.6 m/s | 3.6 |
| 2010 | 9.4°C | 3.9°C | -1.6°C | 20.2°C | -13.8°C | 93 mm | 85% | 0.5 m/s | 3.9 |
| 2009 | 8.5°C | 2.9°C | -2.7°C | 18.6°C | -14.5°C | 42 mm | 80% | 0.6 m/s | 3.7 |
| 2008 | 6.6°C | 1.5°C | -3.6°C | 14.3°C | -10.5°C | 122 mm | 87% | 0.6 m/s | 3.3 |
| 2007 | 8.4°C | 2.8°C | -2.9°C | 21.0°C | -14.4°C | 109 mm | 85% | 0.6 m/s | 3.7 |
| 2006 | 7.6°C | 2.4°C | -2.7°C | 21.7°C | -8.9°C | 34 mm | 79% | 0.6 m/s | 3.7 |
| 2005 | 3.9°C | -0.6°C | -5.2°C | 14.4°C | -14.8°C | 79 mm | 88% | 0.6 m/s | 3.2 |
| 2004 | 8.5°C | 3.4°C | -1.6°C | 20.7°C | -10.0°C | 78 mm | 85% | 0.6 m/s | 3.3 |
| 2003 | 8.8°C | 2.6°C | -3.6°C | 20.1°C | -16.2°C | 60 mm | 85% | 0.6 m/s | 3.5 |
| 2002 | 7.5°C | 2.3°C | -3.0°C | 18.8°C | -13.6°C | 104 mm | 78% | 0.7 m/s | 3.2 |
| 2001 | 4.5°C | -0.1°C | -4.7°C | 10.1°C | -9.6°C | 86 mm | 81% | 0.6 m/s | 2.8 |
| 2000 | 10.3°C | 4.5°C | -1.3°C | 21.9°C | -7.3°C | 71 mm | 79% | 0.6 m/s | 3.4 |
| 1999 | 4.7°C | -0.6°C | -5.9°C | 18.8°C | -16.4°C | 73 mm | 83% | 0.7 m/s | 4.1 |
| 1998 | 7.5°C | 3.3°C | -0.9°C | 24.1°C | -11.3°C | 59 mm | 85% | 0.6 m/s | 3.6 |
| 1997 | 6.9°C | 2.1°C | -2.8°C | 17.5°C | -8.9°C | 104 mm | 84% | 0.7 m/s | 3 |
| 1996 | 4.1°C | -1.1°C | -6.2°C | 14.5°C | -16.1°C | 109 mm | 83% | 0.6 m/s | 3.5 |
| 1995 | 9.5°C | 3.4°C | -2.8°C | 19.8°C | -13.4°C | 36 mm | 80% | 0.6 m/s | 3.5 |
| 1994 | 3.6°C | -0.6°C | -4.8°C | 19.8°C | -11.8°C | 143 mm | 91% | 0.6 m/s | 3.5 |
| 1993 🌧️ | 3.5°C | -0.9°C | -5.3°C | 17.1°C | -21.2°C | 149 mm | 94% | 0.6 m/s | 3.2 |
| 1992 | 5.3°C | 0.2°C | -4.8°C | 20.0°C | -14.7°C | 96 mm | 87% | 0.6 m/s | 3.7 |
| 1991 | 7.8°C | 3.1°C | -1.7°C | 18.7°C | -10.5°C | 114 mm | 86% | 0.6 m/s | 3.1 |
| 1990 | 9.1°C | 3.6°C | -1.9°C | 22.9°C | -13.5°C | 40 mm | 82% | 0.5 m/s | 3.4 |
| 1989 | 6.6°C | 0.9°C | -4.7°C | 22.1°C | -19.0°C | 136 mm | 86% | 0.6 m/s | 3.4 |
| 1988 | 7.7°C | 1.9°C | -4.0°C | 20.9°C | -14.3°C | 65 mm | 81% | 0.6 m/s | 3.9 |
| 1987 | 9.0°C | 2.9°C | -3.1°C | 19.3°C | -12.0°C | 63 mm | 80% | 0.6 m/s | 4 |
| 1986 | 7.7°C | 1.9°C | -4.0°C | 20.8°C | -16.0°C | 69 mm | 84% | 0.6 m/s | 3.5 |
| 1985 | 7.5°C | 2.1°C | -3.3°C | 20.0°C | -11.6°C | 148 mm | 82% | 0.7 m/s | 3.5 |
| 1984 ❄️ | 2.1°C | -2.3°C | -6.6°C | 13.0°C | -15.7°C | 95 mm | 88% | 0.6 m/s | 3.7 |
| 1983 | 7.6°C | 2.7°C | -2.2°C | 18.9°C | -10.8°C | 91 mm | 83% | 0.6 m/s | — |
| 1982 | 6.0°C | 0.9°C | -4.1°C | 16.5°C | -12.9°C | 90 mm | 85% | 0.7 m/s | — |
| 1981 | 5.0°C | 0.2°C | -4.7°C | 18.8°C | -12.3°C | 43 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 7.3°C with lows near -3.2°C (mean 2.1°C), based on 45 years of NASA POWER data.
March averages 83 mm of rainfall in Johnstown, about average for rainfall. The wettest on record was 149 mm in 1993.
The hottest March reached 24.7°C in 2012. The coldest dipped to -21.2°C in 1993.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have risen by about 3.4°C. Daytime highs moved from 5.6°C to 9.9°C and overnight lows from -4.2°C to -1.7°C over the same span.
March is one of the cooler months of the year in Johnstown and about average for rainfall, so plan for around 7.3°C daytime highs and -3.2°C at night.
Not quite — March is the 4th coolest month in Johnstown, averaging 2.1°C.
For March in Johnstown, pack warm layers and a jacket for chilly mornings, with typical highs of 7.3°C and lows of -3.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in March averages 83% — quite humid.
Average wind speed in March is 0.6 m/s. The windiest March on record averaged 0.7 m/s (1981).
The wettest March on record was 1993 with 149 mm. On average, March sees 83 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 Johnstown 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.
