June is one of the warmer months of the year in Pasadena, with average highs near 31°C and lows around 24.9°C (mean 28°C). It is a relatively wet time of year, averaging 150 mm of rainfall and 77% relative humidity across the period.
June is one of the warmer months of the year in Pasadena. Across 45 years of records, the warmest June in Pasadena was 2022 — when the month averaged 30.2°C — while the coldest was 1983 at 26.5°C. Typical June days reach 31°C with nights near 24.9°C. The long-term trend is warming, about 0.4°C per decade.
June is a relatively wet time of year in Pasadena, averaging 150 mm of rainfall. The wettest June on record was 1989 with 404 mm, while the driest was 2005 at 13 mm.
Relative humidity in Pasadena during June averages 77%. The most humid June was 1991 at 85%, and the least humid was 2011 at 66%.
June receives about 6.3 kWh/m²/day of solar energy in Pasadena. The sunniest Junes were 2009, 2011 and 2023, among others at 7.1 kWh/m²/day, and the cloudiest was 2004 at 5.3.
Average wind speed in Pasadena during June is 3.2 m/s. The windiest June was 1998 at 4.5 m/s, while the calmest were 2006 and 2016 at 2.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 27.2°C | 27.7°C | 28.1°C | 28.5°C | 28.8°C | +1.6°C |
| Avg High | 30.2°C | 30.5°C | 31.2°C | 31.6°C | 32.0°C | +1.8°C |
| Avg Low | 24.2°C | 24.8°C | 25.0°C | 25.3°C | 25.7°C | +1.5°C |
| Avg Rain | 189 mm | 137 mm | 140 mm | 152 mm | 129 mm | -60 mm |
June temperatures in Pasadena have risen by about 1.7°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 17.1°C (1989) to a record high of 37.9°C (2013).
Rainfall in June is a relatively wet time of year, averaging 150 mm, with a wettest year of 404 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.5°C per decade while lows rose 0.3°C per decade, widening the gap between day and night.
A good time to visit Pasadena
June is a good time to visit Pasadena, with days averaging 31°C and nights around 24.9°C (mean 28°C, warmer than Pasadena's yearly average) and higher rainfall. April and October are marginally more temperate, but June still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 31.3°C | 28.7°C | 26.1°C | 33.5°C | 23.9°C | 181 mm | 80% | 3.2 m/s | 5.9 |
| 2024 | 31.9°C | 29.1°C | 26.2°C | 34.9°C | 24.3°C | 128 mm | 78% | 3.2 m/s | 6.6 |
| 2023 | 32.9°C | 29.1°C | 25.4°C | 36.0°C | 22.3°C | 75 mm | 76% | 2.8 m/s | 7.1 |
| 2022 🔥 | 34.1°C | 30.2°C | 26.4°C | 37.1°C | 23.2°C | 64 mm | 68% | 3.1 m/s | 6.9 |
| 2021 | 30.4°C | 27.8°C | 25.3°C | 32.7°C | 22.7°C | 191 mm | 81% | 3 m/s | 6 |
| 2020 | 31.3°C | 28.0°C | 24.6°C | 34.2°C | 20.9°C | 133 mm | 75% | 3.4 m/s | 6.3 |
| 2019 | 31.1°C | 28.2°C | 25.2°C | 33.9°C | 22.6°C | 294 mm | 78% | 2.9 m/s | 6.1 |
| 2018 | 32.3°C | 29.2°C | 26.0°C | 35.0°C | 24.6°C | 185 mm | 75% | 3.7 m/s | 6.5 |
| 2017 | 30.2°C | 27.4°C | 24.6°C | 33.4°C | 21.7°C | 189 mm | 80% | 3.5 m/s | 6.1 |
| 2016 | 30.1°C | 27.6°C | 25.1°C | 32.4°C | 22.0°C | 256 mm | 82% | 2.5 m/s | 6.1 |
| 2015 | 29.9°C | 27.4°C | 24.9°C | 31.3°C | 20.6°C | 177 mm | 81% | 2.9 m/s | 5.8 |
| 2014 | 31.1°C | 28.2°C | 25.2°C | 33.5°C | 23.5°C | 92 mm | 77% | 3.7 m/s | 6.2 |
| 2013 | 32.8°C | 29.0°C | 25.1°C | 37.9°C | 21.0°C | 70 mm | 71% | 2.9 m/s | 6.9 |
| 2012 | 32.0°C | 28.5°C | 25.0°C | 37.5°C | 22.8°C | 95 mm | 73% | 2.9 m/s | 6.4 |
| 2011 | 34.0°C | 30.0°C | 26.0°C | 37.2°C | 24.1°C | 49 mm | 66% | 3.7 m/s | 7.1 |
| 2010 | 32.1°C | 29.1°C | 26.2°C | 35.1°C | 22.9°C | 110 mm | 77% | 3 m/s | 6.4 |
| 2009 | 33.0°C | 29.0°C | 24.9°C | 37.2°C | 20.0°C | 31 mm | 70% | 3.3 m/s | 7.1 |
| 2008 | 32.5°C | 29.1°C | 25.8°C | 34.6°C | 24.2°C | 80 mm | 72% | 3.6 m/s | 6.2 |
| 2007 | 29.9°C | 27.3°C | 24.7°C | 31.6°C | 21.9°C | 101 mm | 81% | 2.7 m/s | 5.8 |
| 2006 | 30.9°C | 27.4°C | 24.0°C | 35.5°C | 21.7°C | 177 mm | 73% | 2.5 m/s | 6.7 |
| 2005 | 33.0°C | 29.2°C | 25.5°C | 35.5°C | 22.6°C | 13 mm | 68% | 3.1 m/s | 7.1 |
| 2004 | 29.5°C | 27.4°C | 25.2°C | 31.6°C | 23.4°C | 294 mm | 84% | 2.9 m/s | 5.3 |
| 2003 | 31.1°C | 28.1°C | 25.0°C | 33.0°C | 22.5°C | 164 mm | 78% | 2.7 m/s | 6 |
| 2002 | 31.3°C | 28.0°C | 24.7°C | 35.7°C | 22.6°C | 127 mm | 74% | 3.2 m/s | 6 |
| 2001 | 29.7°C | 27.1°C | 24.5°C | 31.6°C | 22.9°C | 350 mm | 81% | 3 m/s | 6 |
| 2000 | 31.4°C | 28.3°C | 25.2°C | 34.3°C | 20.0°C | 65 mm | 74% | 3.7 m/s | 6 |
| 1999 | 30.8°C | 28.1°C | 25.3°C | 32.6°C | 22.7°C | 143 mm | 77% | 3.4 m/s | 5.8 |
| 1998 | 33.4°C | 29.8°C | 26.1°C | 36.4°C | 21.2°C | 119 mm | 73% | 4.5 m/s | 6.5 |
| 1997 | 29.7°C | 26.9°C | 24.2°C | 31.2°C | 18.1°C | 97 mm | 82% | 2.7 m/s | 6.2 |
| 1996 | 31.3°C | 28.1°C | 24.9°C | 34.4°C | 19.3°C | 161 mm | 73% | 3.2 m/s | 5.9 |
| 1995 | 30.3°C | 26.8°C | 23.3°C | 34.5°C | 17.8°C | 123 mm | 74% | 3.1 m/s | 6.8 |
| 1994 | 29.9°C | 27.4°C | 24.8°C | 32.1°C | 23.4°C | 137 mm | 82% | 2.9 m/s | 6 |
| 1993 | 28.8°C | 26.7°C | 24.6°C | 30.7°C | 19.7°C | 208 mm | 84% | 3.6 m/s | 5.7 |
| 1992 | 30.0°C | 27.1°C | 24.2°C | 32.0°C | 19.3°C | 145 mm | 84% | 2.6 m/s | 6.2 |
| 1991 | 29.2°C | 27.1°C | 24.9°C | 31.0°C | 23.8°C | 184 mm | 85% | 2.8 m/s | 5.9 |
| 1990 | 31.8°C | 28.8°C | 25.7°C | 35.8°C | 24.6°C | 56 mm | 76% | 3.2 m/s | 6.8 |
| 1989 🌧️ | 30.0°C | 26.9°C | 23.9°C | 33.3°C | 17.1°C | 404 mm | 79% | 4 m/s | 5.7 |
| 1988 | 31.0°C | 27.1°C | 23.3°C | 33.3°C | 19.7°C | 66 mm | 71% | 3.1 m/s | 6.6 |
| 1987 | 29.3°C | 26.7°C | 24.2°C | 31.9°C | 22.1°C | 275 mm | 83% | 3 m/s | 5.8 |
| 1986 | 29.8°C | 27.2°C | 24.7°C | 31.6°C | 23.5°C | 205 mm | 80% | 2.7 m/s | 5.9 |
| 1985 | 30.6°C | 27.2°C | 23.9°C | 33.7°C | 18.9°C | 134 mm | 75% | 3.4 m/s | 6.5 |
| 1984 | 31.0°C | 27.4°C | 23.8°C | 35.8°C | 17.2°C | 57 mm | 74% | 3.5 m/s | 6.3 |
| 1983 ❄️ | 29.5°C | 26.5°C | 23.5°C | 31.6°C | 18.1°C | 142 mm | 79% | 2.9 m/s | — |
| 1982 | 31.3°C | 28.1°C | 24.8°C | 32.8°C | 21.1°C | 102 mm | 76% | 2.8 m/s | — |
| 1981 | 29.7°C | 27.5°C | 25.3°C | 31.2°C | 23.6°C | 318 mm | 84% | 3.4 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 31°C with lows near 24.9°C (mean 28°C), based on 45 years of NASA POWER data.
June averages 150 mm of rainfall in Pasadena, a relatively wet time of year. The wettest on record was 404 mm in 1989.
The hottest June reached 37.9°C in 2013. The coldest dipped to 17.1°C in 1989.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 1.7°C. Daytime highs moved from 30.4°C to 32.1°C and overnight lows from 24.3°C to 25.9°C over the same span.
June is one of the warmer months of the year in Pasadena and a relatively wet time of year, so plan for around 31°C daytime highs and 24.9°C at night.
Not quite — June is the 10th coolest month in Pasadena, averaging 28°C.
For June in Pasadena, pack light, breathable clothing and sun protection, with typical highs of 31°C and lows of 24.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 77% — quite humid.
Average wind speed in June is 3.2 m/s. The windiest June on record averaged 4.5 m/s (1998).
The wettest June on record was 1989 with 404 mm. On average, June sees 150 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 Pasadena 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.
