March is one of the cooler months of the year in Waterbury, with average highs near 7°C and lows around -3°C (mean 2°C). It is about average for rainfall, averaging 102 mm of rainfall and 83% relative humidity across the period.
March is one of the cooler months of the year in Waterbury. Across 45 years of records, the warmest March in Waterbury was 2012 — when the month averaged 6.9°C — while the coldest was 1984 at -2.3°C. Typical March days reach 7°C with nights near -3°C. The long-term trend is warming, about 0.4°C per decade.
March is about average for rainfall in Waterbury, averaging 102 mm of rainfall. The wettest March on record was 2010 with 241 mm, while the driest was 1981 at 18 mm.
Relative humidity in Waterbury during March averages 83%. The most humid March was 1993 at 91%, and the least humid was 1985 at 72%.
March receives about 3.7 kWh/m²/day of solar energy in Waterbury. The sunniest Marchs were 1986, 2006 and 2021 at 4.2 kWh/m²/day, and the cloudiest was 2001 at 3.
Average wind speed in Waterbury during March is 0.6 m/s. The windiest Marchs were 1999, 2017 and 2018, among others at 0.7 m/s, while the calmest were 2012, 2016 and 2020, among others at 0.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 1.5°C | 1.5°C | 2.0°C | 1.9°C | 3.8°C | +2.3°C |
| Avg High | 6.6°C | 6.4°C | 7.1°C | 6.7°C | 9.2°C | +2.6°C |
| Avg Low | -3.6°C | -3.4°C | -3.1°C | -3.0°C | -1.6°C | +2°C |
| Avg Rain | 96 mm | 111 mm | 98 mm | 96 mm | 111 mm | +15 mm |
March temperatures in Waterbury have risen by about 2.5°C between 1981–1985 and 2021–2025.
March has ranged from a record low of -23.2°C (2015) to a record high of 25.1°C (1998).
Rainfall in March is about average for rainfall, averaging 102 mm, with a wettest year of 241 mm.
A quieter season to visit Waterbury
If your dates are flexible, the more temperate months of August and July tend to be the most comfortable for visiting Waterbury. That said, March — with days averaging 7°C and nights around -3°C (mean 2°C) and higher rainfall (102 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 | 10.7°C | 4.6°C | -1.4°C | 21.8°C | -10.8°C | 105 mm | 77% | 0.6 m/s | 3.8 |
| 2024 | 9.6°C | 4.7°C | -0.3°C | 19.1°C | -5.4°C | 220 mm | 85% | 0.6 m/s | 3.7 |
| 2023 | 7.4°C | 2.6°C | -2.1°C | 14.2°C | -8.3°C | 101 mm | 83% | 0.6 m/s | 3.8 |
| 2022 | 8.5°C | 3.1°C | -2.4°C | 20.8°C | -11.1°C | 81 mm | 81% | 0.6 m/s | 3.6 |
| 2021 | 9.1°C | 3.3°C | -2.4°C | 22.2°C | -10.1°C | 62 mm | 78% | 0.6 m/s | 4.2 |
| 2020 | 10.0°C | 4.6°C | -0.8°C | 17.2°C | -8.2°C | 95 mm | 82% | 0.5 m/s | 3.7 |
| 2019 | 5.5°C | 0.7°C | -4.2°C | 15.4°C | -15.9°C | 70 mm | 85% | 0.6 m/s | 3.9 |
| 2018 | 5.3°C | 1.1°C | -3.1°C | 13.6°C | -9.2°C | 80 mm | 84% | 0.7 m/s | 3.6 |
| 2017 | 4.4°C | -0.4°C | -5.2°C | 15.1°C | -14.3°C | 98 mm | 79% | 0.7 m/s | 3.8 |
| 2016 | 10.8°C | 5.1°C | -0.5°C | 21.4°C | -7.9°C | 49 mm | 79% | 0.5 m/s | 4.1 |
| 2015 | 3.1°C | -1.7°C | -6.4°C | 10.8°C | -23.2°C | 88 mm | 85% | 0.6 m/s | 3.6 |
| 2014 | 4.3°C | -1.0°C | -6.3°C | 12.7°C | -16.4°C | 106 mm | 78% | 0.6 m/s | 3.6 |
| 2013 | 5.1°C | 0.9°C | -3.2°C | 11.5°C | -9.4°C | 65 mm | 83% | 0.6 m/s | 3.6 |
| 2012 🔥 | 12.3°C | 6.9°C | 1.6°C | 23.2°C | -6.8°C | 32 mm | 82% | 0.5 m/s | 4 |
| 2011 | 6.7°C | 1.9°C | -2.9°C | 17.0°C | -11.1°C | 130 mm | 84% | 0.6 m/s | 3.8 |
| 2010 🌧️ | 9.7°C | 5.0°C | 0.3°C | 19.0°C | -5.0°C | 241 mm | 86% | 0.6 m/s | 3.4 |
| 2009 | 7.6°C | 2.4°C | -2.8°C | 16.7°C | -14.6°C | 56 mm | 81% | 0.5 m/s | 3.8 |
| 2008 | 6.8°C | 2.0°C | -2.8°C | 14.7°C | -6.6°C | 143 mm | 84% | 0.6 m/s | 3.7 |
| 2007 | 5.9°C | 0.4°C | -5.2°C | 19.0°C | -17.5°C | 131 mm | 85% | 0.6 m/s | 3.8 |
| 2006 | 7.0°C | 1.8°C | -3.4°C | 17.9°C | -9.4°C | 19 mm | 81% | 0.6 m/s | 4.2 |
| 2005 | 4.7°C | -0.1°C | -4.9°C | 16.0°C | -11.3°C | 96 mm | 85% | 0.6 m/s | 3.7 |
| 2004 | 7.5°C | 2.7°C | -2.1°C | 17.4°C | -10.3°C | 87 mm | 84% | 0.5 m/s | 3.5 |
| 2003 | 7.7°C | 1.9°C | -3.9°C | 18.5°C | -16.3°C | 99 mm | 86% | 0.5 m/s | 3.9 |
| 2002 | 9.0°C | 3.7°C | -1.5°C | 18.5°C | -8.3°C | 89 mm | 76% | 0.6 m/s | 3.5 |
| 2001 | 4.6°C | 0.5°C | -3.6°C | 11.8°C | -7.6°C | 165 mm | 85% | 0.6 m/s | 3 |
| 2000 | 10.2°C | 4.6°C | -1.0°C | 18.5°C | -9.1°C | 92 mm | 80% | 0.6 m/s | 3.8 |
| 1999 | 7.2°C | 2.0°C | -3.2°C | 18.1°C | -11.8°C | 117 mm | 81% | 0.7 m/s | 4.1 |
| 1998 | 7.8°C | 3.1°C | -1.7°C | 25.1°C | -11.6°C | 132 mm | 86% | 0.6 m/s | 3.8 |
| 1997 | 5.8°C | 1.3°C | -3.1°C | 16.4°C | -9.8°C | 140 mm | 84% | 0.6 m/s | 3.6 |
| 1996 | 4.4°C | -0.5°C | -5.4°C | 12.9°C | -17.8°C | 74 mm | 84% | 0.6 m/s | 3.7 |
| 1995 | 8.3°C | 3.1°C | -2.2°C | 16.4°C | -10.7°C | 46 mm | 84% | 0.5 m/s | 3.9 |
| 1994 | 5.1°C | 0.5°C | -4.1°C | 16.1°C | -13.4°C | 140 mm | 89% | 0.6 m/s | 3.6 |
| 1993 | 3.9°C | -0.7°C | -5.3°C | 16.7°C | -19.8°C | 160 mm | 91% | 0.6 m/s | 3.6 |
| 1992 | 5.7°C | 0.6°C | -4.4°C | 14.3°C | -11.0°C | 104 mm | 81% | 0.6 m/s | 3.4 |
| 1991 | 7.9°C | 2.9°C | -2.1°C | 18.6°C | -8.0°C | 124 mm | 84% | 0.6 m/s | 3.2 |
| 1990 | 8.2°C | 2.6°C | -2.9°C | 21.0°C | -16.0°C | 77 mm | 84% | 0.5 m/s | 3.6 |
| 1989 | 6.0°C | 0.9°C | -4.2°C | 21.3°C | -13.5°C | 96 mm | 82% | 0.6 m/s | 3.6 |
| 1988 | 7.2°C | 1.8°C | -3.5°C | 15.3°C | -12.3°C | 67 mm | 81% | 0.6 m/s | 4.1 |
| 1987 | 8.2°C | 2.9°C | -2.3°C | 18.7°C | -12.9°C | 130 mm | 85% | 0.5 m/s | 3.8 |
| 1986 | 7.5°C | 1.8°C | -3.9°C | 18.1°C | -16.4°C | 79 mm | 85% | 0.6 m/s | 4.2 |
| 1985 | 8.4°C | 3.1°C | -2.1°C | 19.6°C | -9.0°C | 63 mm | 72% | 0.6 m/s | 4.1 |
| 1984 ❄️ | 1.9°C | -2.3°C | -6.5°C | 9.8°C | -18.2°C | 129 mm | 88% | 0.7 m/s | 3.6 |
| 1983 | 7.1°C | 2.7°C | -1.8°C | 13.7°C | -8.7°C | 207 mm | 85% | 0.7 m/s | — |
| 1982 | 6.4°C | 1.0°C | -4.5°C | 14.1°C | -14.7°C | 72 mm | 84% | 0.5 m/s | — |
| 1981 | 6.5°C | 1.5°C | -3.4°C | 20.0°C | -9.5°C | 18 mm | 80% | 0.6 m/s | — |
Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.
The average high in March is around 7°C with lows near -3°C (mean 2°C), based on 45 years of NASA POWER data.
March averages 102 mm of rainfall in Waterbury, about average for rainfall. The wettest on record was 241 mm in 2010.
The hottest March reached 25.1°C in 1998. The coldest dipped to -23.2°C in 2015.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have risen by about 2.5°C. Daytime highs moved from 6.1°C to 9.1°C and overnight lows from -3.7°C to -1.7°C over the same span.
March is one of the cooler months of the year in Waterbury and about average for rainfall, so plan for around 7°C daytime highs and -3°C at night.
Not quite — March is the 4th coolest month in Waterbury, averaging 2°C.
For March in Waterbury, pack warm layers and a jacket for chilly mornings, with typical highs of 7°C and lows of -3°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 (1983).
The wettest March on record was 2010 with 241 mm. On average, March sees 102 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 Waterbury 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.
