July is one of the warmer months of the year in Lynnwood, with average highs near 22.5°C and lows around 12.8°C (mean 17.7°C). It is one of the drier months, averaging 28 mm of rainfall and 76% relative humidity across the period.
July is one of the warmer months of the year in Lynnwood. Across 45 years of records, the warmest Julys in Lynnwood were 2009 and 2015 — when the month averaged 19.4°C — while the coldest was 2011 at 15.4°C. Typical July days reach 22.5°C with nights near 12.8°C. The long-term trend is warming, about 0.3°C per decade.
July is one of the drier months in Lynnwood, averaging 28 mm of rainfall. The wettest July on record was 1983 with 88 mm, while the driest was 2013 at 2 mm.
Relative humidity in Lynnwood during July averages 76%. The most humid July was 2025 at 84%, and the least humid was 1985 at 70%.
July receives about 6.2 kWh/m²/day of solar energy in Lynnwood. The sunniest July was 2023 at 7.2 kWh/m²/day, and the cloudiest was 1993 at 4.5.
Average wind speed in Lynnwood during July is 0.4 m/s. The windiest Julys were 1983 and 1996 at 0.5 m/s, while the calmest were 2012, 2021 and 2025, among others at 0.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 16.8°C | 17.7°C | 17.9°C | 17.7°C | 18.2°C | +1.4°C |
| Avg High | 21.6°C | 22.4°C | 22.8°C | 22.6°C | 23.2°C | +1.6°C |
| Avg Low | 12.0°C | 13.0°C | 13.0°C | 12.9°C | 13.2°C | +1.2°C |
| Avg Rain | 36 mm | 40 mm | 22 mm | 20 mm | 21 mm | -15 mm |
July temperatures in Lynnwood have risen by about 1.3°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 8°C (1999) to a record high of 36.3°C (2009).
Rainfall in July is one of the drier months, averaging 28 mm, with a wettest year of 88 mm.
One of the best times to visit Lynnwood
July is one of the best times to visit Lynnwood. Expect days averaging 22.5°C and nights around 12.8°C (mean 17.7°C) — warmer than Lynnwood's yearly average — with low rainfall (28 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 | 20.3°C | 15.7°C | 11.1°C | 27.6°C | 8.5°C | 47 mm | 84% | 0.3 m/s | 6.9 |
| 2024 | 24.4°C | 19.1°C | 13.7°C | 30.0°C | 10.9°C | 19 mm | 75% | 0.4 m/s | 7.1 |
| 2023 | 23.9°C | 18.6°C | 13.4°C | 30.0°C | 11.1°C | 12 mm | 75% | 0.4 m/s | 7.2 |
| 2022 | 24.0°C | 19.0°C | 14.0°C | 31.4°C | 11.0°C | 18 mm | 78% | 0.4 m/s | 6.5 |
| 2021 | 24.2°C | 19.2°C | 14.1°C | 29.4°C | 11.1°C | 6 mm | 74% | 0.3 m/s | 6.8 |
| 2020 | 22.1°C | 17.4°C | 12.7°C | 32.8°C | 9.6°C | 22 mm | 76% | 0.4 m/s | 6.2 |
| 2019 | 22.3°C | 17.7°C | 13.2°C | 31.0°C | 10.7°C | 23 mm | 77% | 0.4 m/s | 5.5 |
| 2018 | 24.2°C | 19.0°C | 13.8°C | 29.6°C | 10.0°C | 7 mm | 73% | 0.4 m/s | 7 |
| 2017 | 22.4°C | 17.4°C | 12.4°C | 28.2°C | 9.9°C | 3 mm | 78% | 0.4 m/s | 7.1 |
| 2016 | 21.5°C | 17.2°C | 12.9°C | 27.2°C | 10.6°C | 28 mm | 80% | 0.4 m/s | 5.6 |
| 2015 | 24.4°C | 19.4°C | 14.3°C | 31.8°C | 11.2°C | 15 mm | 71% | 0.4 m/s | 6.6 |
| 2014 | 24.3°C | 19.0°C | 13.8°C | 32.5°C | 11.5°C | 29 mm | 74% | 0.4 m/s | 6.6 |
| 2013 | 23.4°C | 18.2°C | 13.0°C | 29.9°C | 10.1°C | 2 mm | 75% | 0.4 m/s | 6.8 |
| 2012 | 21.2°C | 16.8°C | 12.3°C | 25.1°C | 8.7°C | 45 mm | 81% | 0.3 m/s | 5.8 |
| 2011 ❄️ | 19.7°C | 15.4°C | 11.0°C | 25.7°C | 8.3°C | 35 mm | 81% | 0.4 m/s | 5.7 |
| 2010 | 22.3°C | 17.2°C | 12.2°C | 30.4°C | 8.8°C | 10 mm | 75% | 0.4 m/s | 6.5 |
| 2009 🔥 | 24.8°C | 19.4°C | 14.0°C | 36.3°C | 9.6°C | 12 mm | 71% | 0.4 m/s | 6.6 |
| 2008 | 21.7°C | 16.8°C | 11.9°C | 25.3°C | 9.2°C | 22 mm | 76% | 0.4 m/s | 6.2 |
| 2007 | 22.7°C | 18.1°C | 13.4°C | 31.2°C | 10.6°C | 45 mm | 78% | 0.4 m/s | 6 |
| 2006 | 22.8°C | 18.2°C | 13.6°C | 33.0°C | 10.0°C | 12 mm | 75% | 0.4 m/s | 6.4 |
| 2005 | 22.4°C | 17.5°C | 12.6°C | 28.1°C | 9.6°C | 30 mm | 76% | 0.4 m/s | 6.4 |
| 2004 | 24.3°C | 19.1°C | 13.9°C | 33.7°C | 10.4°C | 13 mm | 73% | 0.4 m/s | 6.3 |
| 2003 | 23.8°C | 18.6°C | 13.3°C | 30.2°C | 8.2°C | 5 mm | 72% | 0.4 m/s | 7.1 |
| 2002 | 22.8°C | 17.8°C | 12.9°C | 31.1°C | 8.0°C | 27 mm | 76% | 0.4 m/s | 6.3 |
| 2001 | 21.4°C | 16.5°C | 11.7°C | 25.5°C | 9.8°C | 29 mm | 75% | 0.3 m/s | 6.1 |
| 2000 | 21.2°C | 16.7°C | 12.2°C | 26.9°C | 8.3°C | 30 mm | 79% | 0.4 m/s | 5.8 |
| 1999 | 20.8°C | 16.2°C | 11.7°C | 26.2°C | 8.0°C | 41 mm | 80% | 0.4 m/s | 6.2 |
| 1998 | 23.5°C | 19.1°C | 14.7°C | 31.4°C | 12.0°C | 31 mm | 79% | 0.4 m/s | 5.9 |
| 1997 | 21.7°C | 17.3°C | 12.9°C | 32.5°C | 10.8°C | 53 mm | 80% | 0.4 m/s | 6.4 |
| 1996 | 23.0°C | 18.1°C | 13.1°C | 29.3°C | 9.0°C | 34 mm | 76% | 0.5 m/s | 6.6 |
| 1995 | 22.7°C | 18.2°C | 13.6°C | 31.1°C | 10.3°C | 49 mm | 76% | 0.4 m/s | 5.6 |
| 1994 | 23.6°C | 18.3°C | 12.9°C | 35.3°C | 8.8°C | 20 mm | 71% | 0.4 m/s | 6.4 |
| 1993 | 19.9°C | 15.7°C | 11.5°C | 23.5°C | 9.0°C | 76 mm | 80% | 0.4 m/s | 4.5 |
| 1992 | 22.8°C | 18.2°C | 13.7°C | 29.3°C | 11.0°C | 48 mm | 77% | 0.4 m/s | 5.4 |
| 1991 | 21.8°C | 17.1°C | 12.5°C | 32.3°C | 9.8°C | 30 mm | 78% | 0.4 m/s | 6 |
| 1990 | 24.4°C | 19.1°C | 13.8°C | 32.4°C | 8.8°C | 18 mm | 74% | 0.4 m/s | 6.3 |
| 1989 | 21.1°C | 16.5°C | 12.0°C | 26.3°C | 9.9°C | 27 mm | 77% | 0.4 m/s | 5.4 |
| 1988 | 22.2°C | 17.0°C | 11.9°C | 32.6°C | 8.2°C | 34 mm | 74% | 0.4 m/s | 5.9 |
| 1987 | 21.2°C | 16.8°C | 12.3°C | 25.6°C | 9.2°C | 37 mm | 77% | 0.4 m/s | 5.1 |
| 1986 | 20.1°C | 15.6°C | 11.1°C | 24.4°C | 8.7°C | 48 mm | 78% | 0.4 m/s | 5 |
| 1985 | 24.9°C | 19.3°C | 13.8°C | 30.4°C | 10.4°C | 5 mm | 70% | 0.4 m/s | 6.6 |
| 1984 | 21.7°C | 16.5°C | 11.2°C | 29.6°C | 8.2°C | 4 mm | 76% | 0.4 m/s | 6.3 |
| 1983 🌧️ | 20.9°C | 16.3°C | 11.7°C | 31.0°C | 8.9°C | 88 mm | 79% | 0.5 m/s | — |
| 1982 | 20.9°C | 16.4°C | 12.0°C | 27.4°C | 9.0°C | 50 mm | 79% | 0.4 m/s | — |
| 1981 | 21.5°C | 16.7°C | 11.9°C | 28.5°C | 8.3°C | 34 mm | 78% | 0.4 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 22.5°C with lows near 12.8°C (mean 17.7°C), based on 45 years of NASA POWER data.
July averages 28 mm of rainfall in Lynnwood, one of the drier months. The wettest on record was 88 mm in 1983.
The hottest July reached 36.3°C in 2009. The coldest dipped to 8°C in 1999.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 1.3°C. Daytime highs moved from 22°C to 23.4°C and overnight lows from 12.1°C to 13.3°C over the same span.
July is one of the warmer months of the year in Lynnwood and one of the drier months, so plan for around 22.5°C daytime highs and 12.8°C at night.
Not quite — July is the 11th coolest month in Lynnwood, averaging 17.7°C.
For July in Lynnwood, pack light layers you can adjust through the day, with typical highs of 22.5°C and lows of 12.8°C.
Relative humidity in July averages 76% — quite humid.
Average wind speed in July is 0.4 m/s. The windiest July on record averaged 0.5 m/s (1983).
The wettest July on record was 1983 with 88 mm. On average, July sees 28 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 Lynnwood 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.
