March is one of the cooler months of the year in Danbury, with average highs near 7.1°C and lows around -3.1°C (mean 2°C). It is about average for rainfall, averaging 97 mm of rainfall and 83% relative humidity across the period.
March is one of the cooler months of the year in Danbury. Across 45 years of records, the warmest March in Danbury was 2012 — when the month averaged 7.1°C — while the coldest was 1984 at -2.5°C. Typical March days reach 7.1°C with nights near -3.1°C. The long-term trend is warming, about 0.4°C per decade.
March is about average for rainfall in Danbury, averaging 97 mm of rainfall. The wettest March on record was 2010 with 208 mm, while the driest was 1981 at 17 mm.
Relative humidity in Danbury during March averages 83%. The most humid March was 1993 at 92%, and the least humid was 1985 at 73%.
March receives about 3.7 kWh/m²/day of solar energy in Danbury. 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 Danbury during March is 0.6 m/s. The windiest March was 1999 at 0.8 m/s, while the calmest were 1990, 1995 and 2012 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 | 1.8°C | 3.9°C | +2.4°C |
| Avg High | 6.7°C | 6.5°C | 7.2°C | 6.7°C | 9.4°C | +2.7°C |
| Avg Low | -3.7°C | -3.6°C | -3.1°C | -3.1°C | -1.5°C | +2.2°C |
| Avg Rain | 88 mm | 108 mm | 97 mm | 92 mm | 103 mm | +15 mm |
March temperatures in Danbury have risen by about 2.6°C between 1981–1985 and 2021–2025.
March has ranged from a record low of -22.5°C (2015) to a record high of 26.2°C (1998).
Rainfall in March is about average for rainfall, averaging 97 mm, with a wettest year of 208 mm.
A quieter season to visit Danbury
If your dates are flexible, the more temperate months of August and July tend to be the most comfortable for visiting Danbury. That said, March — with days averaging 7.1°C and nights around -3.1°C (mean 2°C) and higher rainfall (97 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 | 11.0°C | 4.9°C | -1.2°C | 22.0°C | -9.8°C | 103 mm | 77% | 0.6 m/s | 3.8 |
| 2024 | 9.5°C | 4.6°C | -0.4°C | 19.9°C | -5.8°C | 197 mm | 85% | 0.6 m/s | 3.7 |
| 2023 | 7.6°C | 2.8°C | -2.1°C | 14.2°C | -6.8°C | 93 mm | 82% | 0.6 m/s | 3.8 |
| 2022 | 8.6°C | 3.1°C | -2.4°C | 21.4°C | -11.0°C | 78 mm | 81% | 0.6 m/s | 3.6 |
| 2021 | 9.4°C | 3.5°C | -2.4°C | 23.0°C | -10.6°C | 61 mm | 79% | 0.6 m/s | 4.2 |
| 2020 | 10.1°C | 4.6°C | -0.8°C | 18.6°C | -8.9°C | 87 mm | 83% | 0.6 m/s | 3.7 |
| 2019 | 5.6°C | 0.7°C | -4.1°C | 18.2°C | -15.2°C | 67 mm | 85% | 0.6 m/s | 3.9 |
| 2018 | 5.0°C | 0.9°C | -3.3°C | 13.1°C | -9.3°C | 85 mm | 84% | 0.7 m/s | 3.6 |
| 2017 | 4.5°C | -0.3°C | -5.1°C | 16.9°C | -14.1°C | 104 mm | 80% | 0.7 m/s | 3.8 |
| 2016 | 11.1°C | 5.2°C | -0.7°C | 21.6°C | -7.4°C | 38 mm | 80% | 0.6 m/s | 4.1 |
| 2015 | 3.2°C | -1.6°C | -6.4°C | 12.5°C | -22.5°C | 79 mm | 84% | 0.6 m/s | 3.6 |
| 2014 | 3.9°C | -1.4°C | -6.8°C | 13.1°C | -17.4°C | 85 mm | 80% | 0.6 m/s | 3.6 |
| 2013 | 5.1°C | 0.9°C | -3.3°C | 11.9°C | -8.7°C | 64 mm | 83% | 0.7 m/s | 3.6 |
| 2012 🔥 | 12.7°C | 7.1°C | 1.5°C | 22.9°C | -6.9°C | 34 mm | 82% | 0.5 m/s | 4 |
| 2011 | 6.5°C | 1.6°C | -3.3°C | 17.1°C | -10.9°C | 158 mm | 84% | 0.6 m/s | 3.8 |
| 2010 🌧️ | 9.6°C | 4.9°C | 0.1°C | 19.7°C | -5.5°C | 208 mm | 87% | 0.6 m/s | 3.4 |
| 2009 | 8.0°C | 2.7°C | -2.7°C | 17.4°C | -14.0°C | 56 mm | 81% | 0.6 m/s | 3.8 |
| 2008 | 6.8°C | 1.9°C | -2.9°C | 14.4°C | -6.6°C | 158 mm | 84% | 0.6 m/s | 3.7 |
| 2007 | 6.1°C | 0.5°C | -5.1°C | 18.9°C | -16.7°C | 123 mm | 86% | 0.6 m/s | 3.8 |
| 2006 | 7.4°C | 2.0°C | -3.3°C | 18.3°C | -10.2°C | 22 mm | 80% | 0.6 m/s | 4.2 |
| 2005 | 4.6°C | -0.1°C | -4.8°C | 15.5°C | -11.5°C | 100 mm | 86% | 0.6 m/s | 3.7 |
| 2004 | 7.7°C | 2.9°C | -2.0°C | 17.9°C | -9.8°C | 72 mm | 85% | 0.6 m/s | 3.5 |
| 2003 | 7.6°C | 1.8°C | -3.9°C | 19.3°C | -16.2°C | 99 mm | 86% | 0.6 m/s | 3.9 |
| 2002 | 9.0°C | 3.6°C | -1.7°C | 17.8°C | -8.1°C | 88 mm | 76% | 0.6 m/s | 3.5 |
| 2001 | 4.5°C | 0.4°C | -3.6°C | 11.6°C | -7.8°C | 150 mm | 85% | 0.6 m/s | 3 |
| 2000 | 10.2°C | 4.6°C | -0.9°C | 20.3°C | -10.1°C | 100 mm | 82% | 0.6 m/s | 3.8 |
| 1999 | 7.2°C | 1.9°C | -3.5°C | 18.2°C | -11.6°C | 118 mm | 81% | 0.8 m/s | 4.1 |
| 1998 | 8.1°C | 3.3°C | -1.6°C | 26.2°C | -11.0°C | 107 mm | 86% | 0.6 m/s | 3.8 |
| 1997 | 5.9°C | 1.4°C | -3.1°C | 16.7°C | -10.1°C | 144 mm | 84% | 0.7 m/s | 3.6 |
| 1996 | 4.4°C | -0.6°C | -5.5°C | 13.9°C | -18.3°C | 77 mm | 84% | 0.6 m/s | 3.7 |
| 1995 | 8.7°C | 3.1°C | -2.6°C | 17.9°C | -11.9°C | 55 mm | 84% | 0.5 m/s | 3.9 |
| 1994 | 4.8°C | 0.2°C | -4.4°C | 16.4°C | -13.0°C | 139 mm | 89% | 0.6 m/s | 3.6 |
| 1993 | 3.7°C | -1.0°C | -5.7°C | 16.9°C | -22.4°C | 150 mm | 92% | 0.6 m/s | 3.6 |
| 1992 | 5.9°C | 0.8°C | -4.4°C | 15.1°C | -10.4°C | 97 mm | 81% | 0.6 m/s | 3.4 |
| 1991 | 8.1°C | 2.9°C | -2.2°C | 17.9°C | -8.7°C | 109 mm | 84% | 0.6 m/s | 3.2 |
| 1990 | 8.7°C | 2.9°C | -2.8°C | 21.4°C | -15.8°C | 84 mm | 84% | 0.5 m/s | 3.6 |
| 1989 | 6.3°C | 0.9°C | -4.5°C | 22.1°C | -15.9°C | 89 mm | 82% | 0.6 m/s | 3.6 |
| 1988 | 7.5°C | 2.0°C | -3.6°C | 16.8°C | -11.8°C | 55 mm | 82% | 0.6 m/s | 4.1 |
| 1987 | 8.6°C | 3.1°C | -2.4°C | 19.8°C | -12.6°C | 100 mm | 84% | 0.6 m/s | 3.8 |
| 1986 | 7.3°C | 1.5°C | -4.3°C | 19.9°C | -16.5°C | 79 mm | 86% | 0.6 m/s | 4.2 |
| 1985 | 8.5°C | 3.1°C | -2.3°C | 19.6°C | -7.4°C | 61 mm | 73% | 0.7 m/s | 4.1 |
| 1984 ❄️ | 1.8°C | -2.5°C | -6.8°C | 10.4°C | -18.1°C | 125 mm | 88% | 0.7 m/s | 3.6 |
| 1983 | 7.3°C | 2.8°C | -1.8°C | 14.4°C | -8.7°C | 192 mm | 84% | 0.7 m/s | — |
| 1982 | 6.3°C | 0.9°C | -4.5°C | 14.2°C | -15.0°C | 71 mm | 84% | 0.6 m/s | — |
| 1981 | 6.4°C | 1.5°C | -3.4°C | 20.3°C | -10.1°C | 17 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 7.1°C with lows near -3.1°C (mean 2°C), based on 45 years of NASA POWER data.
March averages 97 mm of rainfall in Danbury, about average for rainfall. The wettest on record was 208 mm in 2010.
The hottest March reached 26.2°C in 1998. The coldest dipped to -22.5°C in 2015.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have risen by about 2.6°C. Daytime highs moved from 6.1°C to 9.2°C and overnight lows from -3.8°C to -1.7°C over the same span.
March is one of the cooler months of the year in Danbury and about average for rainfall, so plan for around 7.1°C daytime highs and -3.1°C at night.
Not quite — March is the 4th coolest month in Danbury, averaging 2°C.
For March in Danbury, pack warm layers and a jacket for chilly mornings, with typical highs of 7.1°C and lows of -3.1°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 0.8 m/s (1999).
The wettest March on record was 2010 with 208 mm. On average, March sees 97 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 Danbury 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.
