June is one of the warmer months of the year in Washington, with average highs near 27.5°C and lows around 17.2°C (mean 22.4°C). It is about average for rainfall, averaging 102 mm of rainfall and 73% 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 2010 — when the month averaged 24.8°C — while the coldest was 1992 at 19.9°C. Typical June days reach 27.5°C with nights near 17.2°C. The long-term trend is warming, about 0.5°C per decade.
June is about average for rainfall in Washington, averaging 102 mm of rainfall. The wettest June on record was 2015 with 248 mm, while the driest was 1988 at 23 mm.
Relative humidity in Washington during June averages 73%. The most humid June was 2003 at 83%, and the least humid was 1986 at 58%.
June receives about 6.1 kWh/m²/day of solar energy in Washington. The sunniest June was 1986 at 6.9 kWh/m²/day, and the cloudiest was 1995 at 5.1.
Average wind speed in Washington during June is 2.2 m/s. The windiest Junes were 2017, 2019 and 2023, among others at 2.5 m/s, while the calmest was 1983 at 1.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 21.8°C | 21.7°C | 22.3°C | 22.9°C | 23.4°C | +1.6°C |
| Avg High | 27.0°C | 27.0°C | 27.4°C | 27.8°C | 28.9°C | +1.9°C |
| Avg Low | 16.5°C | 16.4°C | 17.2°C | 18.0°C | 18.0°C | +1.5°C |
| Avg Rain | 94 mm | 84 mm | 127 mm | 112 mm | 83 mm | -11 mm |
June temperatures in Washington have risen by about 2.2°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 7.6°C (1993) to a record high of 37.5°C (2024).
Rainfall in June is about average for rainfall, averaging 102 mm, with a wettest year of 248 mm.
One of the best times to visit Washington
June is one of the best times to visit Washington. Expect days averaging 27.5°C and nights around 17.2°C (mean 22.4°C) — warmer than Washington's yearly average — with higher rainfall (102 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 | 29.5°C | 24.2°C | 18.9°C | 36.5°C | 8.2°C | 107 mm | 75% | 2 m/s | 6.2 |
| 2024 | 30.6°C | 24.7°C | 18.8°C | 37.5°C | 11.4°C | 47 mm | 66% | 2.3 m/s | 6.8 |
| 2023 | 28.5°C | 22.3°C | 16.1°C | 33.7°C | 12.6°C | 64 mm | 63% | 2.5 m/s | 5.8 |
| 2022 | 29.2°C | 23.5°C | 17.9°C | 35.5°C | 13.3°C | 78 mm | 64% | 2.4 m/s | 6.4 |
| 2021 | 28.0°C | 23.1°C | 18.1°C | 35.8°C | 11.6°C | 100 mm | 76% | 2.2 m/s | 6.3 |
| 2020 | 27.8°C | 22.8°C | 17.9°C | 32.6°C | 9.1°C | 104 mm | 72% | 2.3 m/s | 6.5 |
| 2019 | 26.9°C | 22.2°C | 17.6°C | 32.1°C | 9.1°C | 108 mm | 78% | 2.5 m/s | 6.4 |
| 2018 | 26.6°C | 22.1°C | 17.6°C | 31.2°C | 11.3°C | 140 mm | 81% | 2.2 m/s | 5.8 |
| 2017 | 29.3°C | 23.7°C | 18.2°C | 34.8°C | 12.2°C | 43 mm | 64% | 2.5 m/s | 6.7 |
| 2016 | 27.5°C | 22.3°C | 17.1°C | 31.4°C | 9.9°C | 101 mm | 75% | 2.3 m/s | 6.5 |
| 2015 🌧️ | 27.2°C | 23.0°C | 18.7°C | 32.4°C | 13.2°C | 248 mm | 81% | 2.4 m/s | 5.7 |
| 2014 | 26.6°C | 22.2°C | 17.7°C | 30.0°C | 11.7°C | 92 mm | 80% | 2.1 m/s | 6.6 |
| 2013 | 26.9°C | 22.4°C | 18.0°C | 30.8°C | 12.6°C | 206 mm | 81% | 2.3 m/s | 5.6 |
| 2012 | 28.6°C | 23.0°C | 17.4°C | 36.3°C | 12.4°C | 77 mm | 64% | 2.4 m/s | 6.6 |
| 2011 | 28.7°C | 23.5°C | 18.4°C | 33.1°C | 12.3°C | 58 mm | 72% | 2 m/s | 6.3 |
| 2010 🔥 | 29.9°C | 24.8°C | 19.6°C | 36.1°C | 12.6°C | 50 mm | 70% | 2.2 m/s | 6.5 |
| 2009 | 26.2°C | 21.7°C | 17.2°C | 29.7°C | 9.5°C | 151 mm | 81% | 2.2 m/s | 5.8 |
| 2008 | 28.1°C | 23.0°C | 18.0°C | 33.4°C | 12.7°C | 120 mm | 78% | 2 m/s | 6.8 |
| 2007 | 28.5°C | 23.0°C | 17.6°C | 35.5°C | 13.2°C | 74 mm | 69% | 2 m/s | 6.1 |
| 2006 | 27.9°C | 22.8°C | 17.8°C | 34.6°C | 10.8°C | 217 mm | 69% | 2.2 m/s | 5.9 |
| 2005 | 28.0°C | 22.9°C | 17.8°C | 32.4°C | 12.6°C | 68 mm | 75% | 2.1 m/s | 6.2 |
| 2004 | 25.8°C | 21.2°C | 16.6°C | 30.3°C | 12.1°C | 128 mm | 79% | 2 m/s | 5.6 |
| 2003 | 24.9°C | 20.4°C | 15.9°C | 30.5°C | 7.7°C | 188 mm | 83% | 2.3 m/s | 5.4 |
| 2002 | 30.1°C | 23.8°C | 17.5°C | 35.9°C | 12.0°C | 70 mm | 63% | 2.1 m/s | 6.5 |
| 2001 | 27.7°C | 22.4°C | 17.1°C | 34.0°C | 9.0°C | 127 mm | 72% | 2 m/s | 6.5 |
| 2000 | 27.0°C | 22.0°C | 16.9°C | 32.3°C | 9.8°C | 128 mm | 77% | 2.3 m/s | 5.5 |
| 1999 | 28.6°C | 22.6°C | 16.5°C | 35.6°C | 11.8°C | 66 mm | 63% | 2.5 m/s | 5.9 |
| 1998 | 25.5°C | 21.0°C | 16.5°C | 31.3°C | 8.5°C | 124 mm | 80% | 2.4 m/s | 5.4 |
| 1997 | 26.6°C | 21.3°C | 16.0°C | 35.1°C | 8.5°C | 72 mm | 71% | 2.2 m/s | 6 |
| 1996 | 26.5°C | 21.7°C | 16.9°C | 30.3°C | 8.0°C | 147 mm | 81% | 2.1 m/s | 6.4 |
| 1995 | 27.7°C | 22.3°C | 16.8°C | 34.5°C | 12.6°C | 87 mm | 71% | 2.4 m/s | 5.1 |
| 1994 | 28.3°C | 23.0°C | 17.6°C | 33.3°C | 8.9°C | 73 mm | 73% | 2.2 m/s | 6 |
| 1993 | 26.2°C | 21.1°C | 15.9°C | 31.0°C | 7.6°C | 65 mm | 76% | 2.1 m/s | 6.4 |
| 1992 ❄️ | 25.3°C | 19.9°C | 14.5°C | 30.2°C | 8.9°C | 71 mm | 74% | 2.2 m/s | 5.9 |
| 1991 | 28.8°C | 23.1°C | 17.4°C | 36.3°C | 11.9°C | 56 mm | 63% | 2 m/s | 6 |
| 1990 | 26.3°C | 21.1°C | 16.0°C | 33.2°C | 8.2°C | 76 mm | 76% | 2.4 m/s | 6.3 |
| 1989 | 25.9°C | 22.0°C | 18.1°C | 29.5°C | 12.6°C | 185 mm | 83% | 2.1 m/s | 5.6 |
| 1988 | 27.1°C | 21.2°C | 15.2°C | 35.8°C | 8.3°C | 23 mm | 65% | 2.4 m/s | 6.7 |
| 1987 | 27.1°C | 22.2°C | 17.2°C | 31.9°C | 10.3°C | 92 mm | 77% | 2.2 m/s | 6.5 |
| 1986 | 30.0°C | 23.5°C | 16.9°C | 35.1°C | 7.9°C | 46 mm | 58% | 2.5 m/s | 6.9 |
| 1985 | 27.0°C | 21.3°C | 15.6°C | 32.6°C | 10.0°C | 60 mm | 66% | 2.3 m/s | 6 |
| 1984 | 26.6°C | 21.7°C | 16.8°C | 30.9°C | 7.7°C | 77 mm | 80% | 2 m/s | 5.7 |
| 1983 | 25.8°C | 20.9°C | 16.0°C | 30.6°C | 9.2°C | 118 mm | 80% | 1.8 m/s | — |
| 1982 | 24.8°C | 20.0°C | 15.2°C | 29.5°C | 10.8°C | 137 mm | 80% | 2.3 m/s | — |
| 1981 | 28.6°C | 23.0°C | 17.4°C | 34.8°C | 12.7°C | 108 mm | 70% | 2.3 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 27.5°C with lows near 17.2°C (mean 22.4°C), based on 45 years of NASA POWER data.
June averages 102 mm of rainfall in Washington, about average for rainfall. The wettest on record was 248 mm in 2015.
The hottest June reached 37.5°C in 2024. The coldest dipped to 7.6°C in 1993.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 2.2°C. Daytime highs moved from 26.6°C to 29.2°C and overnight lows from 16.2°C to 18°C over the same span.
June is one of the warmer months of the year in Washington and about average for rainfall, so plan for around 27.5°C daytime highs and 17.2°C at night.
Not quite — June is the 10th coolest month in Washington, averaging 22.4°C.
For June in Washington, pack light layers you can adjust through the day, with typical highs of 27.5°C and lows of 17.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 73% — moderately humid.
Average wind speed in June is 2.2 m/s. The windiest June on record averaged 2.5 m/s (1986).
The wettest June on record was 2015 with 248 mm. On average, June sees 102 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.
