June is one of the warmer months of the year in Garden Grove, with average highs near 27.1°C and lows around 14.7°C (mean 20.9°C). It is one of the drier months, averaging 2 mm of rainfall and 56% relative humidity across the period.
June is one of the warmer months of the year in Garden Grove. Across 45 years of records, the warmest June in Garden Grove was 1981 — when the month averaged 24.7°C — while the coldest was 2023 at 17.9°C. Typical June days reach 27.1°C with nights near 14.7°C. The long-term June temperature trend is broadly flat.
June is one of the drier months in Garden Grove, averaging 2 mm of rainfall. The wettest June on record was 1993 with 24 mm, while the driest were 2013, 2014 and 2018, among others at 0 mm.
Relative humidity in Garden Grove during June averages 56%. The most humid June was 2023 at 75%, and the least humid was 1981 at 35%.
June receives about 7.2 kWh/m²/day of solar energy in Garden Grove. The sunniest Junes were 2008 and 2014 at 8 kWh/m²/day, and the cloudiest was 2003 at 6.
Average wind speed in Garden Grove during June is 2 m/s. The windiest June was 1981 at 2.4 m/s, while the calmest was 2019 at 1.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 21.5°C | 20.4°C | 20.9°C | 20.8°C | 21.0°C | -0.5°C |
| Avg High | 28.1°C | 26.4°C | 27.1°C | 27.1°C | 27.0°C | -1.1°C |
| Avg Low | 14.9°C | 14.3°C | 14.8°C | 14.5°C | 15.0°C | +0.1°C |
| Avg Rain | 1 mm | 6 mm | 1 mm | 1 mm | 1 mm | +0 mm |
June temperatures in Garden Grove have fallen by about 0.6°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 8.3°C (1988) to a record high of 40.5°C (2016).
Rainfall in June is one of the drier months, averaging 2 mm, with a wettest year of 24 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.2°C per decade while lows rose 0°C per decade, narrowing the gap between day and night.
One of the best times to visit Garden Grove
June is one of the best times to visit Garden Grove. Expect days averaging 27.1°C and nights around 14.7°C (mean 20.9°C) — warmer than Garden Grove's yearly average — with low rainfall (2 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 | 27.2°C | 21.1°C | 14.9°C | 32.3°C | 12.2°C | 0 mm | 60% | 1.9 m/s | 7.3 |
| 2024 | 27.0°C | 21.0°C | 15.1°C | 32.3°C | 12.0°C | 1 mm | 62% | 1.8 m/s | 7.4 |
| 2023 ❄️ | 22.8°C | 17.9°C | 13.0°C | 30.8°C | 11.7°C | 2 mm | 75% | 1.9 m/s | 6.7 |
| 2022 | 29.6°C | 23.0°C | 16.4°C | 34.7°C | 12.4°C | 2 mm | 49% | 1.9 m/s | 7.9 |
| 2021 | 28.5°C | 22.2°C | 15.9°C | 34.8°C | 10.7°C | 0 mm | 50% | 1.9 m/s | 7.4 |
| 2020 | 26.6°C | 20.7°C | 14.8°C | 33.3°C | 11.6°C | 2 mm | 60% | 2.2 m/s | 7.2 |
| 2019 | 25.8°C | 19.9°C | 14.1°C | 33.0°C | 10.7°C | 2 mm | 67% | 1.7 m/s | 6.5 |
| 2018 | 27.2°C | 20.6°C | 14.0°C | 31.1°C | 10.7°C | 0 mm | 56% | 2 m/s | 7.7 |
| 2017 | 28.0°C | 21.7°C | 15.5°C | 34.2°C | 9.6°C | 0 mm | 55% | 1.9 m/s | 7.5 |
| 2016 | 29.2°C | 22.7°C | 16.3°C | 40.5°C | 11.6°C | 0 mm | 49% | 1.9 m/s | 7.2 |
| 2015 | 28.7°C | 22.6°C | 16.4°C | 32.6°C | 11.9°C | 2 mm | 53% | 1.8 m/s | 7.1 |
| 2014 | 27.9°C | 21.1°C | 14.3°C | 31.4°C | 11.7°C | 0 mm | 54% | 1.9 m/s | 8 |
| 2013 | 27.8°C | 21.3°C | 14.8°C | 36.7°C | 12.5°C | 0 mm | 55% | 2 m/s | 7.5 |
| 2012 | 26.5°C | 19.9°C | 13.2°C | 29.8°C | 10.6°C | 0 mm | 53% | 1.9 m/s | 7.8 |
| 2011 | 24.5°C | 18.7°C | 12.8°C | 30.6°C | 8.6°C | 1 mm | 62% | 1.9 m/s | 7.4 |
| 2010 | 25.7°C | 19.5°C | 13.2°C | 29.6°C | 11.0°C | 0 mm | 64% | 1.9 m/s | 7.2 |
| 2009 | 24.2°C | 19.1°C | 14.0°C | 32.4°C | 12.4°C | 2 mm | 65% | 2 m/s | 6.7 |
| 2008 | 29.4°C | 22.5°C | 15.5°C | 38.5°C | 10.3°C | 0 mm | 47% | 1.9 m/s | 8 |
| 2007 | 27.5°C | 20.9°C | 14.3°C | 31.6°C | 10.2°C | 0 mm | 51% | 1.9 m/s | 7.8 |
| 2006 | 29.1°C | 23.1°C | 17.1°C | 34.6°C | 12.8°C | 1 mm | 54% | 1.8 m/s | 7.1 |
| 2005 | 25.0°C | 19.1°C | 13.3°C | 29.6°C | 9.7°C | 0 mm | 64% | 2 m/s | 7.2 |
| 2004 | 26.7°C | 20.5°C | 14.3°C | 30.7°C | 11.7°C | 0 mm | 60% | 2 m/s | 7.1 |
| 2003 | 25.4°C | 19.7°C | 14.0°C | 32.2°C | 11.9°C | 2 mm | 66% | 2 m/s | 6 |
| 2002 | 27.2°C | 20.7°C | 14.2°C | 33.1°C | 11.3°C | 0 mm | 55% | 1.9 m/s | 7.6 |
| 2001 | 28.2°C | 22.0°C | 15.8°C | 31.9°C | 10.7°C | 0 mm | 52% | 1.9 m/s | 7.6 |
| 2000 | 27.8°C | 21.6°C | 15.5°C | 33.3°C | 11.1°C | 3 mm | 58% | 1.9 m/s | 7.7 |
| 1999 | 25.3°C | 19.3°C | 13.3°C | 31.8°C | 8.3°C | 11 mm | 57% | 2 m/s | 7.4 |
| 1998 | 23.1°C | 18.1°C | 13.1°C | 29.5°C | 10.1°C | 3 mm | 73% | 2.1 m/s | 6.9 |
| 1997 | 26.4°C | 20.6°C | 14.8°C | 31.0°C | 13.1°C | 5 mm | 63% | 2.2 m/s | 7.3 |
| 1996 | 27.5°C | 21.1°C | 14.8°C | 35.0°C | 10.9°C | 0 mm | 56% | 1.9 m/s | 7.9 |
| 1995 | 25.0°C | 19.1°C | 13.2°C | 31.5°C | 9.1°C | 17 mm | 63% | 2.1 m/s | 6.6 |
| 1994 | 28.8°C | 22.5°C | 16.2°C | 36.5°C | 11.5°C | 0 mm | 51% | 1.8 m/s | 7.3 |
| 1993 🌧️ | 27.7°C | 21.4°C | 15.0°C | 35.4°C | 9.1°C | 24 mm | 55% | 2 m/s | 7.3 |
| 1992 | 26.0°C | 20.0°C | 14.0°C | 29.5°C | 11.1°C | 0 mm | 60% | 2.1 m/s | 6.8 |
| 1991 | 24.4°C | 18.5°C | 12.5°C | 30.3°C | 9.2°C | 0 mm | 61% | 2 m/s | 6.9 |
| 1990 | 29.6°C | 22.9°C | 16.1°C | 39.8°C | 10.5°C | 1 mm | 45% | 2.2 m/s | 7.5 |
| 1989 | 27.9°C | 21.2°C | 14.6°C | 35.6°C | 11.5°C | 0 mm | 51% | 2.1 m/s | 6.9 |
| 1988 | 26.8°C | 20.2°C | 13.6°C | 33.2°C | 8.3°C | 0 mm | 53% | 1.9 m/s | 6.5 |
| 1987 | 28.4°C | 22.0°C | 15.5°C | 32.9°C | 11.1°C | 2 mm | 47% | 1.8 m/s | 7 |
| 1986 | 28.4°C | 21.9°C | 15.4°C | 32.6°C | 12.2°C | 0 mm | 49% | 1.8 m/s | 7.2 |
| 1985 | 29.5°C | 22.5°C | 15.6°C | 34.8°C | 10.2°C | 1 mm | 44% | 1.9 m/s | 7.3 |
| 1984 | 28.9°C | 22.2°C | 15.4°C | 33.4°C | 11.2°C | 2 mm | 45% | 2.1 m/s | 6.4 |
| 1983 | 25.8°C | 19.7°C | 13.6°C | 32.5°C | 10.4°C | 0 mm | 62% | 1.9 m/s | — |
| 1982 | 25.0°C | 18.8°C | 12.6°C | 30.2°C | 9.7°C | 2 mm | 60% | 2.1 m/s | — |
| 1981 🔥 | 31.9°C | 24.7°C | 17.4°C | 36.8°C | 12.8°C | 0 mm | 35% | 2.4 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 27.1°C with lows near 14.7°C (mean 20.9°C), based on 45 years of NASA POWER data.
June averages 2 mm of rainfall in Garden Grove, one of the drier months. The wettest on record was 24 mm in 1993.
The hottest June reached 40.5°C in 2016. The coldest dipped to 8.3°C in 1988.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have fallen by about 0.6°C — but days and nights have moved in opposite directions. Overnight lows rose from 14.9°C to 15.1°C while daytime highs eased from 28.2°C to 27°C, narrowing the gap between day and night.
June is one of the warmer months of the year in Garden Grove and one of the drier months, so plan for around 27.1°C daytime highs and 14.7°C at night.
Not quite — June is the 9th coolest month in Garden Grove, averaging 20.9°C.
For June in Garden Grove, pack light layers you can adjust through the day, with typical highs of 27.1°C and lows of 14.7°C.
Relative humidity in June averages 56% — moderately humid.
Average wind speed in June is 2 m/s. The windiest June on record averaged 2.4 m/s (1981).
The wettest June on record was 1993 with 24 mm. On average, June sees 2 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 Garden Grove 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.
