April is one of the cooler months of the year in Danbury, with average highs near 14°C and lows around 2.3°C (mean 8.2°C). It is about average for rainfall, averaging 102 mm of rainfall and 79% relative humidity across the period.
April is one of the cooler months of the year in Danbury. Across 45 years of records, the warmest April in Danbury was 2023 — when the month averaged 10.8°C — while the coldest was 1982 at 5.4°C. Typical April days reach 14°C with nights near 2.3°C. The long-term trend is warming, about 0.3°C per decade.
April is about average for rainfall in Danbury, averaging 102 mm of rainfall. The wettest April on record was 1983 with 263 mm, while the driest was 1985 at 34 mm.
Relative humidity in Danbury during April averages 79%. The most humid April was 1983 at 86%, and the least humid was 2002 at 74%.
April receives about 4.7 kWh/m²/day of solar energy in Danbury. The sunniest April was 2012 at 5.6 kWh/m²/day, and the cloudiest were 2000 and 2011 at 3.9.
Average wind speed in Danbury during April is 0.3 m/s. The windiest Aprils were 2022, 2024 and 2025, among others at 0.3 m/s, while the calmest were 2010, 2017 and 2023, among others at 0.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 7.6°C | 7.8°C | 8.4°C | 8.5°C | 8.7°C | +1.1°C |
| Avg High | 13.3°C | 13.6°C | 14.4°C | 14.5°C | 14.5°C | +1.2°C |
| Avg Low | 1.7°C | 2.0°C | 2.5°C | 2.6°C | 3.0°C | +1.3°C |
| Avg Rain | 115 mm | 96 mm | 103 mm | 94 mm | 107 mm | -8 mm |
April temperatures in Danbury have risen by about 1.5°C between 1981–1985 and 2021–2025.
April has ranged from a record low of -10.6°C (1982) to a record high of 32.6°C (2002).
Rainfall in April is about average for rainfall, averaging 102 mm, with a wettest year of 263 mm.
A good time to visit Danbury
April is a good time to visit Danbury, with days averaging 14°C and nights around 2.3°C (mean 8.2°C, cooler than Danbury's yearly average) and higher rainfall. August and July are marginally more temperate, but April still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 15.1°C | 9.2°C | 3.3°C | 25.4°C | -4.1°C | 73 mm | 75% | 0.3 m/s | 4.6 |
| 2024 | 14.4°C | 8.9°C | 3.4°C | 26.3°C | -2.5°C | 112 mm | 82% | 0.3 m/s | 4.4 |
| 2023 🔥 | 16.8°C | 10.8°C | 4.7°C | 30.4°C | -4.0°C | 137 mm | 78% | 0.2 m/s | 4.6 |
| 2022 | 13.5°C | 7.8°C | 2.0°C | 25.0°C | -3.0°C | 130 mm | 77% | 0.3 m/s | 5 |
| 2021 | 15.2°C | 9.0°C | 2.8°C | 25.9°C | -4.7°C | 74 mm | 77% | 0.3 m/s | 4.9 |
| 2020 | 11.8°C | 6.7°C | 1.6°C | 19.0°C | -3.7°C | 117 mm | 79% | 0.3 m/s | 4.2 |
| 2019 | 14.8°C | 9.2°C | 3.5°C | 22.4°C | -3.9°C | 143 mm | 82% | 0.3 m/s | 4.4 |
| 2018 | 11.2°C | 5.7°C | 0.2°C | 21.2°C | -4.8°C | 117 mm | 79% | 0.3 m/s | 4.4 |
| 2017 | 16.6°C | 10.7°C | 4.9°C | 26.6°C | -2.7°C | 95 mm | 82% | 0.2 m/s | 4.3 |
| 2016 | 14.0°C | 7.8°C | 1.6°C | 23.9°C | -7.9°C | 63 mm | 75% | 0.3 m/s | 5.2 |
| 2015 | 13.8°C | 7.8°C | 1.8°C | 22.0°C | -3.7°C | 70 mm | 79% | 0.3 m/s | 4.8 |
| 2014 | 13.7°C | 7.3°C | 0.9°C | 21.7°C | -5.1°C | 126 mm | 79% | 0.3 m/s | 5.1 |
| 2013 | 14.2°C | 8.1°C | 2.1°C | 21.7°C | -5.0°C | 45 mm | 75% | 0.3 m/s | 5.4 |
| 2012 | 15.0°C | 8.7°C | 2.3°C | 28.2°C | -2.6°C | 72 mm | 74% | 0.3 m/s | 5.6 |
| 2011 | 14.7°C | 9.3°C | 3.9°C | 24.5°C | -2.4°C | 154 mm | 84% | 0.3 m/s | 3.9 |
| 2010 | 16.8°C | 10.6°C | 4.5°C | 25.9°C | 0.4°C | 60 mm | 79% | 0.2 m/s | 5.2 |
| 2009 | 15.1°C | 9.2°C | 3.3°C | 28.9°C | -3.7°C | 72 mm | 77% | 0.3 m/s | 4.7 |
| 2008 | 15.6°C | 9.5°C | 3.3°C | 25.6°C | -4.9°C | 78 mm | 79% | 0.3 m/s | 5.2 |
| 2007 | 11.7°C | 6.6°C | 1.5°C | 24.2°C | -4.1°C | 212 mm | 82% | 0.3 m/s | 4.3 |
| 2006 | 15.4°C | 9.2°C | 3.0°C | 23.7°C | -2.5°C | 120 mm | 77% | 0.3 m/s | 5.1 |
| 2005 | 15.4°C | 8.9°C | 2.5°C | 25.2°C | -2.9°C | 129 mm | 79% | 0.3 m/s | 5.3 |
| 2004 | 14.3°C | 8.4°C | 2.4°C | 25.0°C | -3.9°C | 116 mm | 80% | 0.3 m/s | 4.6 |
| 2003 | 11.8°C | 6.4°C | 0.9°C | 24.6°C | -5.6°C | 63 mm | 82% | 0.3 m/s | 4.4 |
| 2002 | 16.6°C | 10.2°C | 3.8°C | 32.6°C | -5.9°C | 97 mm | 74% | 0.3 m/s | 4.6 |
| 2001 | 14.9°C | 8.6°C | 2.3°C | 26.1°C | -4.2°C | 36 mm | 77% | 0.3 m/s | 5 |
| 2000 | 12.7°C | 7.2°C | 1.7°C | 22.2°C | -4.0°C | 106 mm | 82% | 0.3 m/s | 3.9 |
| 1999 | 14.4°C | 8.2°C | 1.9°C | 20.5°C | -3.2°C | 44 mm | 76% | 0.3 m/s | 5 |
| 1998 | 14.5°C | 8.6°C | 2.7°C | 21.5°C | -2.2°C | 119 mm | 80% | 0.3 m/s | 4.6 |
| 1997 | 12.3°C | 6.7°C | 1.0°C | 20.4°C | -4.6°C | 69 mm | 78% | 0.3 m/s | 5.3 |
| 1996 | 12.6°C | 7.2°C | 1.9°C | 22.6°C | -4.1°C | 175 mm | 83% | 0.3 m/s | 4.2 |
| 1995 | 13.0°C | 6.7°C | 0.5°C | 20.3°C | -6.2°C | 69 mm | 74% | 0.3 m/s | 5 |
| 1994 | 14.8°C | 8.7°C | 2.7°C | 24.6°C | -3.6°C | 88 mm | 81% | 0.3 m/s | 5 |
| 1993 | 13.8°C | 8.0°C | 2.2°C | 22.5°C | -2.9°C | 139 mm | 83% | 0.3 m/s | 4.5 |
| 1992 | 11.9°C | 6.4°C | 0.8°C | 21.2°C | -3.7°C | 73 mm | 80% | 0.3 m/s | 4.4 |
| 1991 | 14.9°C | 9.2°C | 3.6°C | 24.7°C | -3.6°C | 89 mm | 81% | 0.2 m/s | 4.5 |
| 1990 | 13.7°C | 8.2°C | 2.7°C | 28.5°C | -4.0°C | 97 mm | 82% | 0.3 m/s | 4.3 |
| 1989 | 12.4°C | 6.5°C | 0.5°C | 22.0°C | -4.5°C | 75 mm | 77% | 0.3 m/s | 4.6 |
| 1988 | 12.7°C | 7.1°C | 1.5°C | 18.5°C | -4.0°C | 53 mm | 80% | 0.3 m/s | 4.4 |
| 1987 | 13.6°C | 8.4°C | 3.2°C | 23.1°C | -3.3°C | 169 mm | 84% | 0.2 m/s | 4.2 |
| 1986 | 14.0°C | 8.2°C | 2.4°C | 24.1°C | -3.4°C | 82 mm | 81% | 0.3 m/s | 4.6 |
| 1985 | 15.5°C | 9.2°C | 2.9°C | 26.5°C | -4.7°C | 34 mm | 74% | 0.3 m/s | 4.7 |
| 1984 | 12.8°C | 7.6°C | 2.3°C | 22.8°C | -4.0°C | 147 mm | 85% | 0.3 m/s | 4.5 |
| 1983 🌧️ | 12.2°C | 7.2°C | 2.2°C | 24.6°C | -3.2°C | 263 mm | 86% | 0.3 m/s | — |
| 1982 ❄️ | 11.8°C | 5.4°C | -1.1°C | 21.8°C | -10.6°C | 119 mm | 79% | 0.3 m/s | — |
| 1981 | 15.0°C | 8.4°C | 1.8°C | 21.8°C | -4.8°C | 90 mm | 77% | 0.3 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 14°C with lows near 2.3°C (mean 8.2°C), based on 45 years of NASA POWER data.
April averages 102 mm of rainfall in Danbury, about average for rainfall. The wettest on record was 263 mm in 1983.
The hottest April reached 32.6°C in 2002. The coldest dipped to -10.6°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 1.5°C. Daytime highs moved from 13.5°C to 15°C and overnight lows from 1.6°C to 3.2°C over the same span.
April is one of the cooler months of the year in Danbury and about average for rainfall, so plan for around 14°C daytime highs and 2.3°C at night.
Not quite — April is the 6th coolest month in Danbury, averaging 8.2°C.
For April in Danbury, pack warm layers and a jacket for chilly mornings, with typical highs of 14°C and lows of 2.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in April averages 79% — quite humid.
Average wind speed in April is 0.3 m/s. The windiest April on record averaged 0.3 m/s (1981).
The wettest April on record was 1983 with 263 mm. On average, April 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 Danbury behaves each April, 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 April specifically, along with year-by-year records and how the month has changed over the decades.
