April is close to Clarksville's year-round average, with average highs near 19.9°C and lows around 8°C (mean 14°C). It is a relatively wet time of year, averaging 123 mm of rainfall and 79% relative humidity across the period.
April is close to Clarksville's year-round average. Across 45 years of records, the warmest Aprils in Clarksville were 2006 and 2017 — when the month averaged 16.9°C — while the coldest was 2018 at 10.2°C. Typical April days reach 19.9°C with nights near 8°C. The long-term trend is warming, about 0.3°C per decade.
April is a relatively wet time of year in Clarksville, averaging 123 mm of rainfall. The wettest April on record was 2025 with 287 mm, while the driest was 1986 at 40 mm.
Relative humidity in Clarksville during April averages 79%. The most humid April was 1984 at 83%, and the least humid was 1995 at 75%.
April receives about 5.1 kWh/m²/day of solar energy in Clarksville. The sunniest Aprils were 2007, 2012 and 2021 at 5.7 kWh/m²/day, and the cloudiest was 1984 at 4.
Average wind speed in Clarksville during April is 1.3 m/s. The windiest April was 2011 at 1.6 m/s, while the calmest were 1986, 1989 and 2021 at 1.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 13.2°C | 13.4°C | 14.4°C | 14.6°C | 14.1°C | +0.9°C |
| Avg High | 19.3°C | 19.4°C | 20.2°C | 20.5°C | 19.9°C | +0.6°C |
| Avg Low | 7.2°C | 7.4°C | 8.6°C | 8.7°C | 8.2°C | +1°C |
| Avg Rain | 117 mm | 101 mm | 121 mm | 144 mm | 138 mm | +22 mm |
April temperatures in Clarksville have risen by about 1.1°C between 1981–1985 and 2021–2025.
April has ranged from a record low of -6.1°C (1990) to a record high of 29.6°C (2006).
Rainfall in April is a relatively wet time of year, averaging 123 mm, with a wettest year of 287 mm.
A good time to visit Clarksville
April is a good time to visit Clarksville, with days averaging 19.9°C and nights around 8°C (mean 14°C, close to Clarksville's yearly average) and higher rainfall. September and June 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 🌧️ | 21.6°C | 15.9°C | 10.2°C | 28.3°C | -0.8°C | 287 mm | 82% | 1.3 m/s | 5.1 |
| 2024 | 21.4°C | 15.7°C | 10.0°C | 27.7°C | -0.3°C | 112 mm | 77% | 1.3 m/s | 5.2 |
| 2023 | 19.6°C | 13.5°C | 7.5°C | 26.7°C | 1.3°C | 79 mm | 76% | 1.2 m/s | 5.3 |
| 2022 | 18.7°C | 13.0°C | 7.2°C | 26.3°C | -0.6°C | 163 mm | 79% | 1.2 m/s | 4.9 |
| 2021 | 19.2°C | 13.3°C | 7.5°C | 25.8°C | -4.6°C | 78 mm | 78% | 1.1 m/s | 5.7 |
| 2020 | 19.0°C | 12.9°C | 6.9°C | 26.2°C | 0.1°C | 111 mm | 78% | 1.2 m/s | 5.3 |
| 2019 | 20.7°C | 14.8°C | 8.8°C | 26.4°C | -4.4°C | 140 mm | 81% | 1.2 m/s | 5 |
| 2018 ❄️ | 16.2°C | 10.2°C | 4.2°C | 23.8°C | -3.7°C | 129 mm | 81% | 1.3 m/s | 4.9 |
| 2017 | 22.7°C | 16.9°C | 11.2°C | 29.1°C | 3.9°C | 137 mm | 79% | 1.3 m/s | 4.9 |
| 2016 | 20.6°C | 14.7°C | 8.9°C | 26.1°C | -1.4°C | 66 mm | 79% | 1.2 m/s | 5.3 |
| 2015 | 20.4°C | 14.9°C | 9.4°C | 25.1°C | 0.9°C | 166 mm | 82% | 1.2 m/s | 4.8 |
| 2014 | 20.4°C | 14.2°C | 8.0°C | 25.3°C | -2.4°C | 147 mm | 79% | 1.3 m/s | 5.3 |
| 2013 | 18.9°C | 13.2°C | 7.4°C | 27.4°C | -0.7°C | 217 mm | 81% | 1.2 m/s | 4.9 |
| 2012 | 21.7°C | 15.6°C | 9.4°C | 28.6°C | 0.7°C | 48 mm | 76% | 1.2 m/s | 5.7 |
| 2011 | 21.4°C | 15.7°C | 10.0°C | 27.8°C | 1.8°C | 286 mm | 82% | 1.6 m/s | 4.9 |
| 2010 | 22.3°C | 16.1°C | 9.9°C | 29.0°C | 3.7°C | 101 mm | 75% | 1.3 m/s | 5.6 |
| 2009 | 19.4°C | 13.7°C | 8.0°C | 26.9°C | -0.2°C | 119 mm | 80% | 1.4 m/s | 4.9 |
| 2008 | 19.0°C | 13.1°C | 7.2°C | 26.3°C | -0.9°C | 167 mm | 82% | 1.2 m/s | 5 |
| 2007 | 18.4°C | 12.3°C | 6.3°C | 28.3°C | -5.0°C | 86 mm | 75% | 1.3 m/s | 5.7 |
| 2006 🔥 | 22.6°C | 16.9°C | 11.1°C | 29.6°C | 0.0°C | 94 mm | 78% | 1.3 m/s | 5 |
| 2005 | 19.9°C | 14.4°C | 8.8°C | 25.2°C | 1.1°C | 154 mm | 81% | 1.3 m/s | 4.8 |
| 2004 | 19.5°C | 13.8°C | 8.1°C | 26.0°C | -0.8°C | 157 mm | 79% | 1.3 m/s | 5.3 |
| 2003 | 20.6°C | 14.9°C | 9.2°C | 26.9°C | 1.7°C | 131 mm | 82% | 1.4 m/s | 5.3 |
| 2002 | 21.1°C | 15.2°C | 9.2°C | 28.0°C | -3.1°C | 106 mm | 82% | 1.3 m/s | 5.2 |
| 2001 | 22.0°C | 16.4°C | 10.8°C | 27.5°C | -1.9°C | 60 mm | 77% | 1.3 m/s | 5.4 |
| 2000 | 19.0°C | 12.9°C | 6.9°C | 25.6°C | -1.2°C | 137 mm | 77% | 1.3 m/s | 4.6 |
| 1999 | 20.8°C | 15.3°C | 9.8°C | 27.0°C | 1.8°C | 86 mm | 82% | 1.3 m/s | 4.7 |
| 1998 | 19.3°C | 13.5°C | 7.7°C | 24.8°C | 0.7°C | 170 mm | 80% | 1.3 m/s | 4.5 |
| 1997 | 17.2°C | 10.9°C | 4.5°C | 24.7°C | -2.1°C | 86 mm | 76% | 1.2 m/s | 5.3 |
| 1996 | 18.1°C | 11.3°C | 4.6°C | 25.6°C | -3.4°C | 98 mm | 78% | 1.4 m/s | 5.2 |
| 1995 | 20.8°C | 14.4°C | 8.1°C | 27.5°C | -2.7°C | 90 mm | 75% | 1.3 m/s | 5.4 |
| 1994 | 20.8°C | 14.7°C | 8.7°C | 25.8°C | -2.6°C | 163 mm | 83% | 1.3 m/s | 5.3 |
| 1993 | 17.9°C | 12.1°C | 6.3°C | 23.0°C | -1.9°C | 83 mm | 79% | 1.4 m/s | 4.8 |
| 1992 | 19.2°C | 13.4°C | 7.7°C | 26.6°C | -3.0°C | 40 mm | 80% | 1.2 m/s | 5.3 |
| 1991 | 20.9°C | 15.8°C | 10.6°C | 26.8°C | 2.2°C | 112 mm | 83% | 1.2 m/s | 4.7 |
| 1990 | 18.7°C | 12.3°C | 5.9°C | 26.6°C | -6.1°C | 79 mm | 79% | 1.2 m/s | 5.2 |
| 1989 | 18.4°C | 12.9°C | 7.4°C | 27.3°C | -3.4°C | 92 mm | 81% | 1.1 m/s | 5.4 |
| 1988 | 19.6°C | 13.0°C | 6.4°C | 26.3°C | -0.7°C | 57 mm | 76% | 1.3 m/s | 5.6 |
| 1987 | 19.3°C | 12.7°C | 6.1°C | 27.4°C | -4.4°C | 69 mm | 77% | 1.2 m/s | 5.4 |
| 1986 | 21.1°C | 14.5°C | 7.9°C | 28.0°C | -1.9°C | 40 mm | 75% | 1.1 m/s | 5.5 |
| 1985 | 21.1°C | 15.1°C | 9.1°C | 27.0°C | -3.2°C | 120 mm | 79% | 1.2 m/s | 5.1 |
| 1984 | 17.9°C | 12.7°C | 7.5°C | 27.1°C | -2.0°C | 161 mm | 83% | 1.3 m/s | 4 |
| 1983 | 16.3°C | 10.8°C | 5.4°C | 23.9°C | -5.0°C | 255 mm | 82% | 1.4 m/s | — |
| 1982 | 17.2°C | 10.9°C | 4.6°C | 25.1°C | -5.1°C | 144 mm | 79% | 1.3 m/s | — |
| 1981 | 22.5°C | 16.4°C | 10.3°C | 27.4°C | 2.5°C | 112 mm | 77% | 1.3 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 19.9°C with lows near 8°C (mean 14°C), based on 45 years of NASA POWER data.
April averages 123 mm of rainfall in Clarksville, a relatively wet time of year. The wettest on record was 287 mm in 2025.
The hottest April reached 29.6°C in 2006. The coldest dipped to -6.1°C in 1990.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 1.1°C. Daytime highs moved from 19°C to 20.1°C and overnight lows from 7.4°C to 8.5°C over the same span.
April is close to Clarksville's year-round average and a relatively wet time of year, so plan for around 19.9°C daytime highs and 8°C at night.
Not quite — April is the 6th coolest month in Clarksville, averaging 14°C.
For April in Clarksville, pack light layers you can adjust through the day, with typical highs of 19.9°C and lows of 8°C. Bring an umbrella or light rain jacket too.
Relative humidity in April averages 79% — quite humid.
Average wind speed in April is 1.3 m/s. The windiest April on record averaged 1.6 m/s (2011).
The wettest April on record was 2025 with 287 mm. On average, April sees 123 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 Clarksville 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.
