April is one of the cooler months of the year in Bonney Lake, with average highs near 8.8°C and lows around 0.4°C (mean 4.6°C). It is one of the drier months, averaging 126 mm of rainfall and 85% relative humidity across the period.
April is one of the cooler months of the year in Bonney Lake. Across 45 years of records, the warmest April in Bonney Lake was 2016 — when the month averaged 8.6°C — while the coldest was 2008 at 0.4°C. Typical April days reach 8.8°C with nights near 0.4°C. The long-term April temperature trend is broadly flat.
April is one of the drier months in Bonney Lake, averaging 126 mm of rainfall. The wettest April on record was 1996 with 213 mm, while the driest was 2004 at 41 mm.
Relative humidity in Bonney Lake during April averages 85%. The most humid April was 2008 at 90%, and the least humid was 2021 at 77%.
April receives about 4.2 kWh/m²/day of solar energy in Bonney Lake. The sunniest April was 2021 at 5.3 kWh/m²/day, and the cloudiest was 1996 at 3.4.
Average wind speed in Bonney Lake during April is 0.2 m/s. The windiest Aprils were 1983 and 2021 at 0.3 m/s, while the calmest were 1993, 2017 and 2025 at 0.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 4.4°C | 5.0°C | 4.4°C | 4.7°C | 4.5°C | +0.1°C |
| Avg High | 8.6°C | 9.3°C | 8.6°C | 8.7°C | 8.9°C | +0.3°C |
| Avg Low | 0.2°C | 0.7°C | 0.1°C | 0.7°C | -0.1°C | -0.3°C |
| Avg Rain | 129 mm | 140 mm | 100 mm | 146 mm | 104 mm | -25 mm |
April temperatures in Bonney Lake have risen by about 0.6°C between 1981–1985 and 2021–2025.
April has ranged from a record low of -11.7°C (1981) to a record high of 24.8°C (1987).
Rainfall in April is one of the drier months, averaging 126 mm, with a wettest year of 213 mm.
A good time to visit Bonney Lake
April is a good time to visit Bonney Lake, with days averaging 8.8°C and nights around 0.4°C (mean 4.6°C, cooler than Bonney Lake'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 | 10.6°C | 5.3°C | 0.1°C | 16.1°C | -3.4°C | 83 mm | 82% | 0.1 m/s | 5 |
| 2024 | 9.2°C | 4.7°C | 0.1°C | 16.3°C | -3.3°C | 104 mm | 84% | 0.2 m/s | 4.6 |
| 2023 | 7.0°C | 3.5°C | -0.1°C | 21.1°C | -6.0°C | 159 mm | 88% | 0.2 m/s | 3.8 |
| 2022 | 5.5°C | 1.7°C | -2.1°C | 16.0°C | -9.3°C | 168 mm | 89% | 0.2 m/s | 4 |
| 2021 | 11.0°C | 5.9°C | 0.7°C | 20.5°C | -4.4°C | 41 mm | 77% | 0.3 m/s | 5.3 |
| 2020 | 10.3°C | 5.7°C | 1.0°C | 16.0°C | -4.7°C | 68 mm | 80% | 0.2 m/s | 4.8 |
| 2019 | 9.1°C | 5.1°C | 1.1°C | 15.4°C | -1.7°C | 139 mm | 86% | 0.2 m/s | 4 |
| 2018 | 8.9°C | 5.0°C | 1.1°C | 24.1°C | -2.9°C | 203 mm | 85% | 0.2 m/s | 3.7 |
| 2017 | 7.4°C | 3.9°C | 0.5°C | 14.1°C | -2.8°C | 173 mm | 88% | 0.1 m/s | 3.6 |
| 2016 🔥 | 13.6°C | 8.6°C | 3.7°C | 24.6°C | -1.1°C | 60 mm | 79% | 0.2 m/s | 4.7 |
| 2015 | 9.8°C | 5.1°C | 0.3°C | 19.8°C | -2.3°C | 74 mm | 81% | 0.2 m/s | 4.6 |
| 2014 | 9.7°C | 5.5°C | 1.2°C | 20.1°C | -1.3°C | 158 mm | 84% | 0.2 m/s | 4.3 |
| 2013 | 7.9°C | 4.4°C | 0.9°C | 16.6°C | -4.3°C | 188 mm | 86% | 0.2 m/s | 4 |
| 2012 | 8.6°C | 4.7°C | 0.7°C | 21.2°C | -5.5°C | 142 mm | 87% | 0.2 m/s | 4 |
| 2011 | 4.5°C | 1.2°C | -2.1°C | 13.4°C | -7.5°C | 181 mm | 89% | 0.2 m/s | 3.8 |
| 2010 | 7.6°C | 3.5°C | -0.6°C | 16.3°C | -9.4°C | 145 mm | 87% | 0.2 m/s | 3.8 |
| 2009 | 7.6°C | 3.4°C | -0.9°C | 18.7°C | -10.3°C | 113 mm | 84% | 0.2 m/s | 4.5 |
| 2008 ❄️ | 3.9°C | 0.4°C | -3.1°C | 12.0°C | -11.1°C | 89 mm | 90% | 0.2 m/s | 4 |
| 2007 | 8.8°C | 4.6°C | 0.4°C | 18.5°C | -4.2°C | 73 mm | 84% | 0.2 m/s | 4 |
| 2006 | 9.3°C | 4.8°C | 0.2°C | 19.9°C | -2.8°C | 87 mm | 84% | 0.2 m/s | 4.3 |
| 2005 | 9.7°C | 5.5°C | 1.2°C | 17.5°C | -3.6°C | 124 mm | 85% | 0.2 m/s | 4 |
| 2004 | 12.8°C | 7.3°C | 1.7°C | 22.4°C | -2.3°C | 41 mm | 78% | 0.2 m/s | 5.2 |
| 2003 | 7.6°C | 3.9°C | 0.2°C | 14.4°C | -4.2°C | 123 mm | 87% | 0.2 m/s | 3.6 |
| 2002 | 8.3°C | 4.3°C | 0.4°C | 15.7°C | -3.7°C | 135 mm | 84% | 0.2 m/s | 4.2 |
| 2001 | 7.4°C | 3.7°C | 0.0°C | 21.4°C | -3.4°C | 128 mm | 86% | 0.2 m/s | 4 |
| 2000 | 10.6°C | 5.9°C | 1.1°C | 17.8°C | -4.6°C | 90 mm | 84% | 0.2 m/s | 4.4 |
| 1999 | 7.7°C | 3.3°C | -1.1°C | 19.7°C | -6.2°C | 63 mm | 83% | 0.2 m/s | 4.5 |
| 1998 | 10.3°C | 5.5°C | 0.7°C | 23.8°C | -2.6°C | 56 mm | 81% | 0.2 m/s | 4.6 |
| 1997 | 8.6°C | 4.2°C | -0.2°C | 17.2°C | -5.2°C | 156 mm | 85% | 0.2 m/s | 4.1 |
| 1996 🌧️ | 9.4°C | 5.3°C | 1.2°C | 19.4°C | -3.4°C | 213 mm | 87% | 0.2 m/s | 3.4 |
| 1995 | 8.8°C | 4.4°C | 0.1°C | 16.2°C | -4.2°C | 113 mm | 83% | 0.2 m/s | 4.3 |
| 1994 | 10.7°C | 6.4°C | 2.2°C | 19.5°C | -1.3°C | 108 mm | 86% | 0.2 m/s | 3.7 |
| 1993 | 7.8°C | 4.2°C | 0.6°C | 13.0°C | -3.6°C | 196 mm | 88% | 0.1 m/s | 3.7 |
| 1992 | 10.3°C | 6.0°C | 1.6°C | 19.3°C | -3.3°C | 167 mm | 84% | 0.2 m/s | 3.9 |
| 1991 | 7.9°C | 4.0°C | 0.0°C | 17.2°C | -6.4°C | 199 mm | 85% | 0.2 m/s | 4.3 |
| 1990 | 11.2°C | 6.7°C | 2.2°C | 19.8°C | -1.0°C | 128 mm | 84% | 0.2 m/s | 4 |
| 1989 | 11.3°C | 6.3°C | 1.3°C | 20.1°C | -3.3°C | 102 mm | 81% | 0.2 m/s | 4.4 |
| 1988 | 9.9°C | 5.5°C | 1.1°C | 20.0°C | -2.5°C | 174 mm | 85% | 0.2 m/s | 3.6 |
| 1987 | 11.1°C | 6.3°C | 1.6°C | 24.8°C | -2.7°C | 121 mm | 83% | 0.2 m/s | 4.4 |
| 1986 | 7.3°C | 3.4°C | -0.6°C | 17.6°C | -4.2°C | 111 mm | 86% | 0.2 m/s | 3.7 |
| 1985 | 8.3°C | 4.4°C | 0.5°C | 19.8°C | -6.7°C | 124 mm | 87% | 0.2 m/s | 4.1 |
| 1984 | 6.2°C | 2.8°C | -0.6°C | 15.7°C | -5.4°C | 145 mm | 88% | 0.2 m/s | 4.1 |
| 1983 | 9.5°C | 4.9°C | 0.3°C | 18.0°C | -3.6°C | 81 mm | 81% | 0.3 m/s | — |
| 1982 | 6.1°C | 2.0°C | -2.1°C | 18.4°C | -6.4°C | 128 mm | 85% | 0.2 m/s | — |
| 1981 | 7.4°C | 3.7°C | 0.0°C | 19.2°C | -11.7°C | 179 mm | 89% | 0.2 m/s | — |
Actual recorded April data for each year, 1981–2025 — sourced from NASA POWER.
The average high in April is around 8.8°C with lows near 0.4°C (mean 4.6°C), based on 45 years of NASA POWER data.
April averages 126 mm of rainfall in Bonney Lake, one of the drier months. The wettest on record was 213 mm in 1996.
The hottest April reached 24.8°C in 1987. The coldest dipped to -11.7°C in 1981.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average April temperatures have risen by about 0.6°C. Daytime highs moved from 7.5°C to 8.7°C and overnight lows from -0.4°C to -0.3°C over the same span.
April is one of the cooler months of the year in Bonney Lake and one of the drier months, so plan for around 8.8°C daytime highs and 0.4°C at night.
Not quite — April is the 6th coolest month in Bonney Lake, averaging 4.6°C.
For April in Bonney Lake, pack warm layers and a jacket for chilly mornings, with typical highs of 8.8°C and lows of 0.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in April averages 85% — quite humid.
Average wind speed in April is 0.2 m/s. The windiest April on record averaged 0.3 m/s (1983).
The wettest April on record was 1996 with 213 mm. On average, April sees 126 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 Bonney Lake 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.
