June is one of the warmer months of the year in Washington, with average highs near 25.9°C and lows around 14.5°C (mean 20.2°C). It is a relatively wet time of year, averaging 103 mm of rainfall and 76% relative humidity across the period.
June is one of the warmer months of the year in Washington. Across 45 years of records, the warmest June in Washington was 2025 — when the month averaged 22.4°C — while the coldest was 1985 at 17.7°C. Typical June days reach 25.9°C with nights near 14.5°C. The long-term trend is warming, about 0.4°C per decade.
June is a relatively wet time of year in Washington, averaging 103 mm of rainfall. The wettest June on record was 1981 with 199 mm, while the driest was 1999 at 34 mm.
Relative humidity in Washington during June averages 76%. The most humid June was 1989 at 85%, and the least humid was 1988 at 58%.
June receives about 5.9 kWh/m²/day of solar energy in Washington. The sunniest June was 1988 at 7 kWh/m²/day, and the cloudiest was 2015 at 4.8.
Average wind speed in Washington during June is 0.1 m/s. The windiest Junes were 2023, 2024 and 2025, among others at 0.1 m/s, while the calmest were 2017, 2019 and 2021, among others at 0 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 19.4°C | 20.0°C | 20.1°C | 20.7°C | 20.9°C | +1.5°C |
| Avg High | 25.2°C | 25.8°C | 25.8°C | 26.1°C | 26.9°C | +1.7°C |
| Avg Low | 13.6°C | 14.3°C | 14.5°C | 15.2°C | 15.0°C | +1.4°C |
| Avg Rain | 109 mm | 91 mm | 104 mm | 115 mm | 93 mm | -15 mm |
June temperatures in Washington have risen by about 1.9°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 2.4°C (2003) to a record high of 37.9°C (2025).
Rainfall in June is a relatively wet time of year, averaging 103 mm, with a wettest year of 199 mm.
One of the best times to visit Washington
June is one of the best times to visit Washington. Expect days averaging 25.9°C and nights around 14.5°C (mean 20.2°C) — warmer than Washington's yearly average — with higher rainfall (103 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 🔥 | 27.9°C | 22.4°C | 17.0°C | 37.9°C | 3.6°C | 138 mm | 82% | 0.1 m/s | 5.8 |
| 2024 | 27.6°C | 21.4°C | 15.2°C | 35.8°C | 8.7°C | 84 mm | 74% | 0.1 m/s | 6.2 |
| 2023 | 25.5°C | 19.0°C | 12.5°C | 31.7°C | 6.7°C | 97 mm | 68% | 0.1 m/s | 5.6 |
| 2022 | 26.9°C | 20.7°C | 14.5°C | 33.4°C | 5.9°C | 87 mm | 70% | 0.1 m/s | 6.8 |
| 2021 | 27.5°C | 21.7°C | 15.9°C | 34.3°C | 8.4°C | 100 mm | 74% | 0 m/s | 5.9 |
| 2020 | 25.8°C | 20.3°C | 14.9°C | 30.8°C | 5.3°C | 56 mm | 78% | 0.1 m/s | 6.5 |
| 2019 | 24.4°C | 19.5°C | 14.6°C | 29.3°C | 7.9°C | 132 mm | 82% | 0 m/s | 5.8 |
| 2018 | 26.1°C | 21.1°C | 16.0°C | 35.4°C | 7.2°C | 130 mm | 82% | 0.1 m/s | 5.5 |
| 2017 | 25.2°C | 19.8°C | 14.5°C | 29.9°C | 8.8°C | 119 mm | 79% | 0 m/s | 6.2 |
| 2016 | 27.0°C | 21.1°C | 15.1°C | 31.2°C | 7.2°C | 90 mm | 72% | 0.1 m/s | 6.4 |
| 2015 | 25.6°C | 20.7°C | 15.7°C | 32.3°C | 10.7°C | 175 mm | 82% | 0 m/s | 4.8 |
| 2014 | 26.9°C | 21.1°C | 15.4°C | 31.0°C | 8.3°C | 101 mm | 78% | 0.1 m/s | 5.8 |
| 2013 | 26.2°C | 20.7°C | 15.3°C | 31.3°C | 5.5°C | 125 mm | 77% | 0.1 m/s | 5.7 |
| 2012 | 27.6°C | 20.8°C | 14.0°C | 35.9°C | 8.9°C | 63 mm | 67% | 0 m/s | 6.7 |
| 2011 | 25.7°C | 20.4°C | 15.2°C | 31.5°C | 7.9°C | 95 mm | 80% | 0.1 m/s | 6 |
| 2010 | 26.5°C | 21.3°C | 16.2°C | 29.7°C | 8.6°C | 123 mm | 81% | 0.1 m/s | 5.7 |
| 2009 | 24.6°C | 19.3°C | 14.0°C | 27.7°C | 6.2°C | 99 mm | 81% | 0.1 m/s | 5.6 |
| 2008 | 25.2°C | 20.4°C | 15.6°C | 29.6°C | 9.3°C | 160 mm | 83% | 0 m/s | 5.9 |
| 2007 | 27.3°C | 20.7°C | 14.1°C | 33.3°C | 8.0°C | 90 mm | 70% | 0.1 m/s | 6.5 |
| 2006 | 24.5°C | 19.0°C | 13.4°C | 30.7°C | 4.7°C | 124 mm | 77% | 0.1 m/s | 5.7 |
| 2005 | 27.2°C | 21.6°C | 15.9°C | 34.7°C | 9.6°C | 64 mm | 76% | 0.1 m/s | 6.1 |
| 2004 | 24.3°C | 19.2°C | 14.1°C | 31.6°C | 6.1°C | 113 mm | 82% | 0.1 m/s | 5.8 |
| 2003 | 23.5°C | 18.4°C | 13.3°C | 29.9°C | 2.4°C | 107 mm | 81% | 0.1 m/s | 5.3 |
| 2002 | 27.0°C | 21.0°C | 15.0°C | 34.0°C | 10.2°C | 95 mm | 73% | 0.1 m/s | 6.3 |
| 2001 | 27.0°C | 20.5°C | 14.1°C | 32.9°C | 7.3°C | 101 mm | 71% | 0.1 m/s | 6 |
| 2000 | 27.2°C | 21.1°C | 15.1°C | 31.8°C | 7.6°C | 90 mm | 72% | 0 m/s | 5.6 |
| 1999 | 29.5°C | 22.0°C | 14.5°C | 35.9°C | 6.7°C | 34 mm | 59% | 0 m/s | 6.3 |
| 1998 | 24.2°C | 19.6°C | 15.0°C | 32.1°C | 4.3°C | 176 mm | 82% | 0.1 m/s | 5.2 |
| 1997 | 24.7°C | 19.2°C | 13.7°C | 30.6°C | 5.6°C | 74 mm | 78% | 0.1 m/s | 6.1 |
| 1996 | 25.3°C | 20.3°C | 15.2°C | 30.3°C | 6.7°C | 110 mm | 82% | 0.1 m/s | 5.7 |
| 1995 | 25.5°C | 20.3°C | 15.1°C | 31.2°C | 8.0°C | 134 mm | 81% | 0.1 m/s | 5.7 |
| 1994 | 26.7°C | 20.9°C | 15.1°C | 33.7°C | 5.2°C | 85 mm | 76% | 0.1 m/s | 6.1 |
| 1993 | 25.6°C | 19.6°C | 13.6°C | 31.7°C | 5.6°C | 83 mm | 74% | 0.1 m/s | 5.9 |
| 1992 | 24.9°C | 18.4°C | 11.9°C | 31.5°C | 3.3°C | 43 mm | 72% | 0.1 m/s | 5.6 |
| 1991 | 27.3°C | 21.2°C | 15.1°C | 32.7°C | 8.2°C | 54 mm | 71% | 0.1 m/s | 6.3 |
| 1990 | 24.3°C | 18.8°C | 13.4°C | 30.3°C | 3.1°C | 116 mm | 81% | 0.1 m/s | 5.5 |
| 1989 | 23.8°C | 19.4°C | 15.0°C | 28.8°C | 8.5°C | 164 mm | 85% | 0.1 m/s | 5.2 |
| 1988 | 27.6°C | 19.6°C | 11.7°C | 36.3°C | 3.2°C | 36 mm | 58% | 0.1 m/s | 7 |
| 1987 | 26.3°C | 20.7°C | 15.0°C | 31.5°C | 5.0°C | 121 mm | 78% | 0.1 m/s | 6.2 |
| 1986 | 25.7°C | 19.4°C | 13.2°C | 31.6°C | 3.6°C | 102 mm | 73% | 0.1 m/s | 5.9 |
| 1985 ❄️ | 23.3°C | 17.7°C | 12.2°C | 27.7°C | 7.8°C | 73 mm | 79% | 0.1 m/s | 5.5 |
| 1984 | 25.8°C | 20.1°C | 14.3°C | 29.9°C | 6.4°C | 80 mm | 79% | 0.1 m/s | 5.8 |
| 1983 | 25.2°C | 19.6°C | 14.1°C | 29.8°C | 6.8°C | 91 mm | 79% | 0.1 m/s | — |
| 1982 | 24.2°C | 18.4°C | 12.6°C | 29.6°C | 8.9°C | 111 mm | 76% | 0.1 m/s | — |
| 1981 🌧️ | 24.9°C | 19.7°C | 14.5°C | 29.8°C | 7.2°C | 199 mm | 82% | 0.1 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 25.9°C with lows near 14.5°C (mean 20.2°C), based on 45 years of NASA POWER data.
June averages 103 mm of rainfall in Washington, a relatively wet time of year. The wettest on record was 199 mm in 1981.
The hottest June reached 37.9°C in 2025. The coldest dipped to 2.4°C in 2003.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 1.9°C. Daytime highs moved from 24.7°C to 27.1°C and overnight lows from 13.5°C to 15°C over the same span.
June is one of the warmer months of the year in Washington and a relatively wet time of year, so plan for around 25.9°C daytime highs and 14.5°C at night.
Not quite — June is the 10th coolest month in Washington, averaging 20.2°C.
For June in Washington, pack light layers you can adjust through the day, with typical highs of 25.9°C and lows of 14.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 76% — quite humid.
Average wind speed in June is 0.1 m/s. The windiest June on record averaged 0.1 m/s (1981).
The wettest June on record was 1981 with 199 mm. On average, June sees 103 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 Washington behaves each June, 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 June specifically, along with year-by-year records and how the month has changed over the decades.
