August is one of the warmer months of the year in Yakima, with average highs near 27.6°C and lows around 12.5°C (mean 20.1°C). It is one of the drier months, averaging 11 mm of rainfall and 52% relative humidity across the period.
August is one of the warmer months of the year in Yakima. Across 45 years of records, the warmest August in Yakima was 2022 — when the month averaged 23.8°C — while the coldest was 1995 at 16.4°C. Typical August days reach 27.6°C with nights near 12.5°C. The long-term trend is warming, about 0.7°C per decade.
August is one of the drier months in Yakima, averaging 11 mm of rainfall. The wettest August on record was 2004 with 47 mm, while the driest was 2012 at 0 mm.
Relative humidity in Yakima during August averages 52%. The most humid August was 1983 at 62%, and the least humid was 2022 at 43%.
August receives about 6.2 kWh/m²/day of solar energy in Yakima. The sunniest Augusts were 1998, 2005 and 2011 at 6.8 kWh/m²/day, and the cloudiest were 1989, 1990 and 1995 at 5.6.
Average wind speed in Yakima during August is 1.6 m/s. The windiest Augusts were 2008 and 2010 at 1.8 m/s, while the calmest was 2017 at 1.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 19.1°C | 19.2°C | 20.1°C | 20.9°C | 21.5°C | +2.4°C |
| Avg High | 26.7°C | 26.5°C | 27.9°C | 28.5°C | 29.2°C | +2.5°C |
| Avg Low | 11.6°C | 11.9°C | 12.3°C | 13.3°C | 13.8°C | +2.2°C |
| Avg Rain | 12 mm | 15 mm | 11 mm | 8 mm | 10 mm | -2 mm |
August temperatures in Yakima have risen by about 2.6°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 4.3°C (1984) to a record high of 40.1°C (2023).
Rainfall in August is one of the drier months, averaging 11 mm, with a wettest year of 47 mm.
One of the best times to visit Yakima
August is one of the best times to visit Yakima. Expect days averaging 27.6°C and nights around 12.5°C (mean 20.1°C) — warmer than Yakima's yearly average — with low rainfall (11 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 | 28.0°C | 20.4°C | 12.9°C | 36.2°C | 7.0°C | 18 mm | 51% | 1.5 m/s | 6.1 |
| 2024 | 28.1°C | 20.5°C | 13.0°C | 37.1°C | 5.7°C | 10 mm | 48% | 1.6 m/s | 5.8 |
| 2023 | 29.0°C | 21.8°C | 14.6°C | 40.1°C | 9.8°C | 22 mm | 47% | 1.6 m/s | 6 |
| 2022 🔥 | 32.0°C | 23.8°C | 15.6°C | 36.2°C | 9.6°C | 3 mm | 43% | 1.7 m/s | 6.4 |
| 2021 | 29.1°C | 21.5°C | 14.0°C | 38.0°C | 6.4°C | 4 mm | 46% | 1.7 m/s | 5.7 |
| 2020 | 29.2°C | 20.9°C | 12.6°C | 36.7°C | 7.8°C | 1 mm | 45% | 1.7 m/s | 6.6 |
| 2019 | 28.9°C | 21.3°C | 13.7°C | 36.2°C | 9.5°C | 16 mm | 50% | 1.5 m/s | 6.3 |
| 2018 | 28.5°C | 21.0°C | 13.5°C | 37.2°C | 7.9°C | 2 mm | 45% | 1.6 m/s | 5.9 |
| 2017 | 30.6°C | 22.8°C | 15.0°C | 35.5°C | 9.2°C | 6 mm | 44% | 1.4 m/s | 6.4 |
| 2016 | 28.5°C | 20.7°C | 12.9°C | 34.4°C | 8.1°C | 2 mm | 47% | 1.6 m/s | 6.6 |
| 2015 | 28.5°C | 20.9°C | 13.3°C | 37.6°C | 9.1°C | 7 mm | 45% | 1.7 m/s | 6 |
| 2014 | 28.4°C | 21.3°C | 14.2°C | 35.4°C | 8.6°C | 27 mm | 53% | 1.6 m/s | 6 |
| 2013 | 28.1°C | 20.9°C | 13.8°C | 32.8°C | 11.0°C | 18 mm | 54% | 1.6 m/s | 5.7 |
| 2012 | 29.1°C | 21.0°C | 13.0°C | 34.2°C | 6.7°C | 0 mm | 47% | 1.7 m/s | 6.7 |
| 2011 | 28.0°C | 19.9°C | 11.8°C | 33.1°C | 8.0°C | 0 mm | 52% | 1.7 m/s | 6.8 |
| 2010 | 26.5°C | 19.1°C | 11.6°C | 34.1°C | 7.3°C | 5 mm | 52% | 1.8 m/s | 6.3 |
| 2009 | 28.2°C | 20.3°C | 12.4°C | 37.9°C | 7.8°C | 6 mm | 49% | 1.7 m/s | 6.1 |
| 2008 | 26.5°C | 19.3°C | 12.0°C | 37.0°C | 6.4°C | 18 mm | 53% | 1.8 m/s | 5.8 |
| 2007 | 26.4°C | 18.9°C | 11.4°C | 34.0°C | 7.5°C | 9 mm | 53% | 1.6 m/s | 6.3 |
| 2006 | 28.0°C | 20.1°C | 12.2°C | 33.5°C | 6.3°C | 1 mm | 46% | 1.6 m/s | 6.6 |
| 2005 | 29.4°C | 21.1°C | 12.8°C | 35.5°C | 8.6°C | 2 mm | 43% | 1.7 m/s | 6.8 |
| 2004 🌧️ | 28.8°C | 21.6°C | 14.3°C | 36.3°C | 9.7°C | 47 mm | 53% | 1.7 m/s | 5.8 |
| 2003 | 28.7°C | 20.9°C | 13.2°C | 33.7°C | 9.4°C | 7 mm | 47% | 1.6 m/s | 6.5 |
| 2002 | 27.4°C | 19.5°C | 11.7°C | 34.9°C | 7.6°C | 2 mm | 49% | 1.7 m/s | 6.6 |
| 2001 | 28.9°C | 20.9°C | 12.9°C | 35.4°C | 7.5°C | 12 mm | 50% | 1.7 m/s | 6.3 |
| 2000 | 26.3°C | 18.4°C | 10.5°C | 32.1°C | 6.2°C | 3 mm | 54% | 1.7 m/s | 6.7 |
| 1999 | 26.6°C | 19.7°C | 12.9°C | 31.7°C | 5.1°C | 20 mm | 59% | 1.6 m/s | 6.1 |
| 1998 | 28.1°C | 20.4°C | 12.6°C | 35.6°C | 7.4°C | 6 mm | 53% | 1.5 m/s | 6.8 |
| 1997 | 26.8°C | 19.8°C | 12.8°C | 33.3°C | 9.5°C | 14 mm | 59% | 1.6 m/s | 6.3 |
| 1996 | 26.7°C | 19.2°C | 11.6°C | 33.8°C | 5.9°C | 7 mm | 54% | 1.6 m/s | 6.2 |
| 1995 ❄️ | 23.4°C | 16.4°C | 9.4°C | 31.3°C | 5.9°C | 16 mm | 60% | 1.7 m/s | 5.6 |
| 1994 | 27.0°C | 19.2°C | 11.4°C | 33.2°C | 8.8°C | 3 mm | 53% | 1.6 m/s | 6.2 |
| 1993 | 24.8°C | 17.7°C | 10.5°C | 31.5°C | 5.0°C | 9 mm | 59% | 1.7 m/s | 6 |
| 1992 | 27.7°C | 20.0°C | 12.3°C | 35.2°C | 6.7°C | 15 mm | 49% | 1.5 m/s | 6.2 |
| 1991 | 26.9°C | 19.9°C | 12.8°C | 32.9°C | 6.3°C | 16 mm | 60% | 1.6 m/s | 5.8 |
| 1990 | 26.5°C | 19.5°C | 12.4°C | 35.1°C | 6.2°C | 46 mm | 58% | 1.6 m/s | 5.6 |
| 1989 | 24.6°C | 17.7°C | 10.7°C | 33.3°C | 7.2°C | 24 mm | 59% | 1.5 m/s | 5.6 |
| 1988 | 26.8°C | 18.8°C | 10.8°C | 32.0°C | 6.6°C | 3 mm | 52% | 1.6 m/s | 6.1 |
| 1987 | 26.6°C | 19.0°C | 11.4°C | 32.7°C | 6.4°C | 3 mm | 51% | 1.6 m/s | 6.2 |
| 1986 | 29.4°C | 21.5°C | 13.7°C | 34.2°C | 9.3°C | 5 mm | 48% | 1.6 m/s | 6.2 |
| 1985 | 25.3°C | 17.7°C | 10.2°C | 30.9°C | 5.6°C | 12 mm | 52% | 1.6 m/s | 5.9 |
| 1984 | 25.9°C | 18.3°C | 10.6°C | 32.5°C | 4.3°C | 6 mm | 57% | 1.6 m/s | 6 |
| 1983 | 26.0°C | 19.1°C | 12.2°C | 31.6°C | 8.7°C | 36 mm | 62% | 1.5 m/s | — |
| 1982 | 26.0°C | 18.6°C | 11.3°C | 32.6°C | 6.5°C | 12 mm | 57% | 1.6 m/s | — |
| 1981 | 29.4°C | 21.2°C | 13.1°C | 35.7°C | 6.2°C | 7 mm | 48% | 1.7 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 27.6°C with lows near 12.5°C (mean 20.1°C), based on 45 years of NASA POWER data.
August averages 11 mm of rainfall in Yakima, one of the drier months. The wettest on record was 47 mm in 2004.
The hottest August reached 40.1°C in 2023. The coldest dipped to 4.3°C in 1984.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 2.6°C. Daytime highs moved from 26.5°C to 29.2°C and overnight lows from 11.5°C to 14°C over the same span.
August is one of the warmer months of the year in Yakima and one of the drier months, so plan for around 27.6°C daytime highs and 12.5°C at night.
Not quite — August is the 12th coolest month in Yakima, averaging 20.1°C.
For August in Yakima, pack light layers you can adjust through the day, with typical highs of 27.6°C and lows of 12.5°C.
Relative humidity in August averages 52% — relatively dry.
Average wind speed in August is 1.6 m/s. The windiest August on record averaged 1.8 m/s (2008).
The wettest August on record was 2004 with 47 mm. On average, August sees 11 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 Yakima behaves each August, 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 August specifically, along with year-by-year records and how the month has changed over the decades.
