July is one of the warmer months of the year in Bonney Lake, with average highs near 20.3°C and lows around 9.4°C (mean 14.9°C). It is one of the drier months, averaging 30 mm of rainfall and 78% relative humidity across the period.
July is one of the warmer months of the year in Bonney Lake. Across 45 years of records, the warmest July in Bonney Lake was 2015 — when the month averaged 17.2°C — while the coldest was 1993 at 11.3°C. Typical July days reach 20.3°C with nights near 9.4°C. The long-term trend is warming, about 0.4°C per decade.
July is one of the drier months in Bonney Lake, averaging 30 mm of rainfall. The wettest July on record was 1983 with 118 mm, while the driest was 2017 at 3 mm.
Relative humidity in Bonney Lake during July averages 78%. The most humid July was 1993 at 88%, and the least humid was 2015 at 68%.
July receives about 6.2 kWh/m²/day of solar energy in Bonney Lake. The sunniest July was 2023 at 7.2 kWh/m²/day, and the cloudiest was 1993 at 4.5.
Average wind speed in Bonney Lake during July is 0.2 m/s. The windiest Julys were 2022, 2023 and 2024, among others at 0.2 m/s, while the calmest were 1993, 2016 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 | 13.8°C | 14.7°C | 15.2°C | 15.1°C | 15.6°C | +1.8°C |
| Avg High | 19.2°C | 19.9°C | 20.7°C | 20.5°C | 21.3°C | +2.1°C |
| Avg Low | 8.3°C | 9.5°C | 9.6°C | 9.6°C | 9.8°C | +1.5°C |
| Avg Rain | 43 mm | 44 mm | 20 mm | 22 mm | 16 mm | -27 mm |
July temperatures in Bonney Lake have risen by about 1.4°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 1.7°C (1981) to a record high of 35.6°C (2006).
Rainfall in July is one of the drier months, averaging 30 mm, with a wettest year of 118 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.5°C per decade while lows rose 0.3°C per decade, widening the gap between day and night.
One of the best times to visit Bonney Lake
July is one of the best times to visit Bonney Lake. Expect days averaging 20.3°C and nights around 9.4°C (mean 14.9°C) — warmer than Bonney Lake's yearly average — with low rainfall (30 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 19.1°C | 13.3°C | 7.5°C | 25.4°C | 1.8°C | 29 mm | 79% | 0.1 m/s | 6.9 |
| 2024 | 22.3°C | 16.5°C | 10.7°C | 28.7°C | 5.4°C | 18 mm | 74% | 0.2 m/s | 7.1 |
| 2023 | 22.0°C | 16.1°C | 10.2°C | 27.3°C | 7.4°C | 8 mm | 74% | 0.2 m/s | 7.2 |
| 2022 | 22.0°C | 16.4°C | 10.8°C | 33.2°C | 5.9°C | 17 mm | 76% | 0.2 m/s | 6.5 |
| 2021 | 22.4°C | 16.4°C | 10.4°C | 33.6°C | 6.8°C | 5 mm | 75% | 0.2 m/s | 6.8 |
| 2020 | 19.9°C | 14.7°C | 9.4°C | 32.7°C | 5.8°C | 18 mm | 79% | 0.2 m/s | 6.2 |
| 2019 | 19.0°C | 14.3°C | 9.5°C | 27.4°C | 6.6°C | 28 mm | 80% | 0.2 m/s | 5.5 |
| 2018 | 22.9°C | 16.8°C | 10.7°C | 31.9°C | 5.6°C | 5 mm | 69% | 0.2 m/s | 7 |
| 2017 | 20.8°C | 15.0°C | 9.1°C | 26.1°C | 6.0°C | 3 mm | 78% | 0.2 m/s | 7.1 |
| 2016 | 18.6°C | 14.0°C | 9.4°C | 26.2°C | 6.7°C | 40 mm | 83% | 0.1 m/s | 5.6 |
| 2015 🔥 | 23.1°C | 17.2°C | 11.3°C | 31.9°C | 7.7°C | 15 mm | 68% | 0.2 m/s | 6.6 |
| 2014 | 22.2°C | 16.4°C | 10.6°C | 32.5°C | 6.8°C | 39 mm | 76% | 0.2 m/s | 6.6 |
| 2013 | 21.3°C | 15.6°C | 9.9°C | 29.0°C | 7.1°C | 5 mm | 78% | 0.2 m/s | 6.8 |
| 2012 | 19.8°C | 14.5°C | 9.2°C | 26.9°C | 4.1°C | 37 mm | 82% | 0.2 m/s | 5.8 |
| 2011 | 17.4°C | 12.4°C | 7.4°C | 24.3°C | 3.2°C | 32 mm | 83% | 0.2 m/s | 5.7 |
| 2010 | 20.0°C | 14.3°C | 8.7°C | 32.2°C | 4.7°C | 17 mm | 77% | 0.2 m/s | 6.5 |
| 2009 | 23.1°C | 17.0°C | 10.9°C | 32.7°C | 3.6°C | 8 mm | 72% | 0.2 m/s | 6.6 |
| 2008 | 19.4°C | 14.1°C | 8.8°C | 26.2°C | 4.1°C | 23 mm | 78% | 0.2 m/s | 6.2 |
| 2007 | 21.2°C | 15.7°C | 10.2°C | 30.6°C | 5.0°C | 29 mm | 79% | 0.2 m/s | 6 |
| 2006 | 21.2°C | 15.8°C | 10.4°C | 35.6°C | 5.6°C | 16 mm | 76% | 0.2 m/s | 6.4 |
| 2005 | 20.3°C | 14.7°C | 9.2°C | 30.1°C | 6.4°C | 32 mm | 78% | 0.2 m/s | 6.4 |
| 2004 | 22.5°C | 16.6°C | 10.7°C | 31.7°C | 6.0°C | 12 mm | 75% | 0.2 m/s | 6.3 |
| 2003 | 21.8°C | 15.9°C | 10.0°C | 31.1°C | 4.1°C | 6 mm | 73% | 0.2 m/s | 7.1 |
| 2002 | 20.9°C | 15.1°C | 9.3°C | 29.8°C | 4.2°C | 18 mm | 77% | 0.2 m/s | 6.3 |
| 2001 | 18.3°C | 13.2°C | 8.2°C | 29.3°C | 5.4°C | 29 mm | 80% | 0.2 m/s | 6.1 |
| 2000 | 18.6°C | 13.6°C | 8.7°C | 27.1°C | 4.1°C | 24 mm | 82% | 0.2 m/s | 5.8 |
| 1999 | 18.6°C | 13.2°C | 7.9°C | 26.2°C | 3.3°C | 52 mm | 80% | 0.2 m/s | 6.2 |
| 1998 | 21.8°C | 16.8°C | 11.8°C | 33.0°C | 8.4°C | 20 mm | 80% | 0.2 m/s | 5.9 |
| 1997 | 19.0°C | 14.0°C | 9.1°C | 28.2°C | 6.4°C | 49 mm | 82% | 0.2 m/s | 6.4 |
| 1996 | 21.6°C | 16.0°C | 10.4°C | 34.1°C | 4.0°C | 38 mm | 76% | 0.2 m/s | 6.6 |
| 1995 | 19.5°C | 14.7°C | 9.8°C | 27.8°C | 5.7°C | 51 mm | 81% | 0.2 m/s | 5.6 |
| 1994 | 21.3°C | 15.3°C | 9.4°C | 33.9°C | 4.1°C | 27 mm | 75% | 0.2 m/s | 6.4 |
| 1993 ❄️ | 15.0°C | 11.3°C | 7.6°C | 20.7°C | 5.7°C | 94 mm | 88% | 0.1 m/s | 4.5 |
| 1992 | 20.6°C | 15.3°C | 10.0°C | 30.7°C | 6.3°C | 58 mm | 79% | 0.2 m/s | 5.4 |
| 1991 | 19.9°C | 14.5°C | 9.2°C | 30.3°C | 6.0°C | 17 mm | 80% | 0.2 m/s | 6 |
| 1990 | 21.8°C | 15.9°C | 10.0°C | 29.5°C | 5.8°C | 32 mm | 78% | 0.2 m/s | 6.3 |
| 1989 | 18.6°C | 13.2°C | 7.9°C | 26.0°C | 5.0°C | 30 mm | 80% | 0.2 m/s | 5.4 |
| 1988 | 19.5°C | 13.9°C | 8.2°C | 27.8°C | 4.4°C | 37 mm | 78% | 0.2 m/s | 5.9 |
| 1987 | 18.6°C | 13.4°C | 8.2°C | 24.6°C | 5.2°C | 52 mm | 79% | 0.2 m/s | 5.1 |
| 1986 | 17.1°C | 12.1°C | 7.2°C | 23.1°C | 3.8°C | 51 mm | 81% | 0.2 m/s | 5 |
| 1985 | 23.5°C | 17.1°C | 10.6°C | 30.2°C | 5.2°C | 9 mm | 70% | 0.2 m/s | 6.6 |
| 1984 | 20.4°C | 14.5°C | 8.5°C | 27.7°C | 5.0°C | 7 mm | 76% | 0.2 m/s | 6.3 |
| 1983 🌧️ | 17.3°C | 12.5°C | 7.7°C | 28.5°C | 5.1°C | 118 mm | 84% | 0.2 m/s | — |
| 1982 | 19.3°C | 13.9°C | 8.5°C | 30.9°C | 3.4°C | 47 mm | 80% | 0.2 m/s | — |
| 1981 | 18.6°C | 13.4°C | 8.2°C | 26.7°C | 1.7°C | 37 mm | 80% | 0.2 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 20.3°C with lows near 9.4°C (mean 14.9°C), based on 45 years of NASA POWER data.
July averages 30 mm of rainfall in Bonney Lake, one of the drier months. The wettest on record was 118 mm in 1983.
The hottest July reached 35.6°C in 2006. The coldest dipped to 1.7°C in 1981.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 1.4°C. Daytime highs moved from 19.8°C to 21.6°C and overnight lows from 8.7°C to 9.9°C over the same span.
July is one of the warmer months of the year in Bonney Lake and one of the drier months, so plan for around 20.3°C daytime highs and 9.4°C at night.
Not quite — July is the 11th coolest month in Bonney Lake, averaging 14.9°C.
For July in Bonney Lake, pack light layers you can adjust through the day, with typical highs of 20.3°C and lows of 9.4°C.
Relative humidity in July averages 78% — quite humid.
Average wind speed in July is 0.2 m/s. The windiest July on record averaged 0.2 m/s (1981).
The wettest July on record was 1983 with 118 mm. On average, July sees 30 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 July, 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 July specifically, along with year-by-year records and how the month has changed over the decades.
