April is one of the cooler months of the year in Maryville, with average highs near 18.1°C and lows around 6.3°C (mean 12.2°C). It is about average for rainfall, averaging 114 mm of rainfall and 78% relative humidity across the period.
April is one of the cooler months of the year in Maryville. Across 45 years of records, the warmest April in Maryville was 2017 — when the month averaged 15.2°C — while the coldest was 1983 at 9.3°C. Typical April days reach 18.1°C with nights near 6.3°C. The long-term trend is warming, about 0.4°C per decade.
April is about average for rainfall in Maryville, averaging 114 mm of rainfall. The wettest April on record was 1998 with 238 mm, while the driest were 1986 and 2021 at 42 mm.
Relative humidity in Maryville during April averages 78%. The most humid April was 1984 at 83%, and the least humid was 1986 at 70%.
April receives about 5.2 kWh/m²/day of solar energy in Maryville. The sunniest April was 2010 at 5.9 kWh/m²/day, and the cloudiest were 1984 and 2000 at 4.4.
Average wind speed in Maryville during April is 0.4 m/s. The windiest Aprils were 2011, 2020 and 2021, among others at 0.5 m/s, while the calmest were 2023, 2024 and 2025, among others at 0.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 11.3°C | 11.8°C | 12.5°C | 13.1°C | 12.5°C | +1.2°C |
| Avg High | 17.1°C | 17.7°C | 18.4°C | 19.1°C | 18.5°C | +1.4°C |
| Avg Low | 5.5°C | 5.9°C | 6.6°C | 7.1°C | 6.5°C | +1°C |
| Avg Rain | 107 mm | 115 mm | 104 mm | 132 mm | 106 mm | -1 mm |
April temperatures in Maryville have risen by about 1.5°C between 1981–1985 and 2021–2025.
April has ranged from a record low of -6.8°C (1983) to a record high of 28.3°C (1986).
Rainfall in April is about average for rainfall, averaging 114 mm, with a wettest year of 238 mm.
A good time to visit Maryville
April is a good time to visit Maryville, with days averaging 18.1°C and nights around 6.3°C (mean 12.2°C, close to Maryville's yearly average) and higher rainfall. August 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 | 20.6°C | 14.6°C | 8.6°C | 27.0°C | -3.1°C | 119 mm | 78% | 0.4 m/s | 5.4 |
| 2024 | 19.4°C | 13.6°C | 7.8°C | 27.3°C | -0.4°C | 89 mm | 78% | 0.4 m/s | 5 |
| 2023 | 18.8°C | 12.5°C | 6.3°C | 24.8°C | -0.6°C | 108 mm | 76% | 0.4 m/s | 5.2 |
| 2022 | 18.1°C | 11.6°C | 5.1°C | 26.0°C | -1.6°C | 85 mm | 76% | 0.4 m/s | 5.3 |
| 2021 | 17.4°C | 11.7°C | 5.9°C | 24.6°C | -5.3°C | 42 mm | 74% | 0.5 m/s | 5.8 |
| 2020 | 16.9°C | 11.1°C | 5.3°C | 23.5°C | -1.1°C | 193 mm | 77% | 0.5 m/s | 5.4 |
| 2019 | 19.7°C | 13.8°C | 8.0°C | 26.2°C | -4.9°C | 143 mm | 78% | 0.4 m/s | 5.4 |
| 2018 | 16.1°C | 9.8°C | 3.5°C | 21.1°C | -5.1°C | 134 mm | 79% | 0.4 m/s | 5.2 |
| 2017 🔥 | 20.9°C | 15.2°C | 9.5°C | 26.9°C | 0.5°C | 183 mm | 80% | 0.4 m/s | 5 |
| 2016 | 18.9°C | 12.7°C | 6.5°C | 24.9°C | -2.6°C | 76 mm | 75% | 0.4 m/s | 5.7 |
| 2015 | 19.0°C | 13.2°C | 7.5°C | 23.8°C | -2.6°C | 148 mm | 81% | 0.4 m/s | 4.7 |
| 2014 | 19.1°C | 12.9°C | 6.6°C | 24.6°C | -4.4°C | 118 mm | 79% | 0.4 m/s | 5.3 |
| 2013 | 17.9°C | 12.0°C | 6.0°C | 25.6°C | -1.3°C | 173 mm | 80% | 0.4 m/s | 5.3 |
| 2012 | 19.6°C | 13.7°C | 7.8°C | 26.5°C | -2.6°C | 102 mm | 78% | 0.4 m/s | 5.5 |
| 2011 | 19.7°C | 13.9°C | 8.1°C | 26.0°C | -1.9°C | 156 mm | 78% | 0.5 m/s | 5.5 |
| 2010 | 20.2°C | 13.9°C | 7.6°C | 25.2°C | 0.8°C | 86 mm | 75% | 0.4 m/s | 5.9 |
| 2009 | 17.8°C | 11.8°C | 5.7°C | 25.8°C | -4.0°C | 87 mm | 79% | 0.4 m/s | 5.1 |
| 2008 | 18.3°C | 12.3°C | 6.4°C | 23.7°C | -1.0°C | 89 mm | 78% | 0.4 m/s | 5.3 |
| 2007 | 16.5°C | 10.5°C | 4.4°C | 26.1°C | -6.3°C | 78 mm | 73% | 0.5 m/s | 5.5 |
| 2006 | 20.4°C | 14.5°C | 8.6°C | 25.1°C | -2.6°C | 129 mm | 78% | 0.4 m/s | 5.3 |
| 2005 | 17.5°C | 11.9°C | 6.3°C | 24.3°C | -2.0°C | 120 mm | 79% | 0.5 m/s | 4.8 |
| 2004 | 18.2°C | 12.2°C | 6.2°C | 26.2°C | -2.2°C | 77 mm | 77% | 0.4 m/s | 5.2 |
| 2003 | 18.8°C | 13.2°C | 7.7°C | 24.7°C | 0.8°C | 157 mm | 83% | 0.4 m/s | 4.9 |
| 2002 | 19.7°C | 13.8°C | 8.0°C | 26.9°C | -2.1°C | 63 mm | 78% | 0.4 m/s | 5.3 |
| 2001 | 19.5°C | 13.8°C | 8.0°C | 26.7°C | -2.0°C | 63 mm | 77% | 0.4 m/s | 5.3 |
| 2000 | 16.8°C | 10.9°C | 5.1°C | 23.2°C | -4.5°C | 175 mm | 79% | 0.4 m/s | 4.4 |
| 1999 | 19.3°C | 13.7°C | 8.1°C | 26.8°C | 0.0°C | 77 mm | 80% | 0.4 m/s | 5 |
| 1998 🌧️ | 17.2°C | 11.9°C | 6.7°C | 22.0°C | -0.2°C | 238 mm | 81% | 0.5 m/s | 4.6 |
| 1997 | 15.8°C | 9.7°C | 3.7°C | 21.8°C | -4.5°C | 129 mm | 75% | 0.4 m/s | 5.5 |
| 1996 | 16.1°C | 9.9°C | 3.7°C | 23.4°C | -4.5°C | 118 mm | 78% | 0.5 m/s | 5.2 |
| 1995 | 19.1°C | 12.7°C | 6.3°C | 27.3°C | -2.2°C | 50 mm | 75% | 0.4 m/s | 5.3 |
| 1994 | 19.8°C | 13.7°C | 7.6°C | 27.1°C | -1.9°C | 175 mm | 79% | 0.4 m/s | 5.6 |
| 1993 | 16.0°C | 10.1°C | 4.1°C | 21.9°C | -4.1°C | 81 mm | 77% | 0.5 m/s | 5.2 |
| 1992 | 17.2°C | 11.5°C | 5.7°C | 23.4°C | -5.3°C | 68 mm | 79% | 0.4 m/s | 4.8 |
| 1991 | 19.3°C | 13.9°C | 8.5°C | 24.2°C | -0.6°C | 137 mm | 81% | 0.4 m/s | 4.6 |
| 1990 | 17.1°C | 10.7°C | 4.3°C | 26.4°C | -5.3°C | 78 mm | 78% | 0.4 m/s | 5.2 |
| 1989 | 16.3°C | 10.9°C | 5.6°C | 25.2°C | -5.0°C | 125 mm | 80% | 0.4 m/s | 5 |
| 1988 | 17.3°C | 11.1°C | 4.8°C | 24.5°C | -2.2°C | 101 mm | 77% | 0.5 m/s | 5.2 |
| 1987 | 15.6°C | 10.2°C | 4.8°C | 25.9°C | -6.6°C | 102 mm | 82% | 0.4 m/s | 5.2 |
| 1986 | 19.0°C | 12.6°C | 6.1°C | 28.3°C | -5.3°C | 42 mm | 70% | 0.5 m/s | 5.6 |
| 1985 | 18.8°C | 12.7°C | 6.6°C | 26.3°C | -5.0°C | 67 mm | 75% | 0.4 m/s | 5.6 |
| 1984 | 16.0°C | 10.8°C | 5.6°C | 24.7°C | -1.3°C | 131 mm | 83% | 0.4 m/s | 4.4 |
| 1983 ❄️ | 14.8°C | 9.3°C | 3.9°C | 21.9°C | -6.8°C | 179 mm | 80% | 0.5 m/s | — |
| 1982 | 15.6°C | 9.7°C | 3.9°C | 22.5°C | -6.5°C | 102 mm | 77% | 0.5 m/s | — |
| 1981 | 20.4°C | 14.2°C | 7.9°C | 25.6°C | -0.6°C | 116 mm | 77% | 0.5 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 18.1°C with lows near 6.3°C (mean 12.2°C), based on 45 years of NASA POWER data.
April averages 114 mm of rainfall in Maryville, about average for rainfall. The wettest on record was 238 mm in 1998.
The hottest April reached 28.3°C in 1986. The coldest dipped to -6.8°C in 1983.
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 17.1°C to 18.9°C and overnight lows from 5.6°C to 6.7°C over the same span.
April is one of the cooler months of the year in Maryville and about average for rainfall, so plan for around 18.1°C daytime highs and 6.3°C at night.
Not quite — April is the 6th coolest month in Maryville, averaging 12.2°C.
For April in Maryville, pack warm layers and a jacket for chilly mornings, with typical highs of 18.1°C and lows of 6.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in April averages 78% — quite humid.
Average wind speed in April is 0.4 m/s. The windiest April on record averaged 0.5 m/s (1981).
The wettest April on record was 1998 with 238 mm. On average, April sees 114 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 Maryville 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.
