June is one of the warmer months of the year in Casa Grande, with average highs near 40.7°C and lows around 22.6°C (mean 31.7°C). It is one of the drier months, averaging 3 mm of rainfall and 17% relative humidity across the period.
June is one of the warmer months of the year in Casa Grande. Across 45 years of records, the warmest Junes in Casa Grande were 2021 and 2024 — when the month averaged 33.8°C — while the coldest were 1991, 1995 and 1998 at 29°C. Typical June days reach 40.7°C with nights near 22.6°C. The long-term trend is warming, about 0.4°C per decade.
June is one of the drier months in Casa Grande, averaging 3 mm of rainfall. The wettest June on record was 2000 with 22 mm, while the driest were 2019, 2020 and 2023, among others at 0 mm.
Relative humidity in Casa Grande during June averages 17%. The most humid June was 2000 at 24%, and the least humid was 2002 at 13%.
June receives about 8.3 kWh/m²/day of solar energy in Casa Grande. The sunniest June was 1997 at 8.9 kWh/m²/day, and the cloudiest was 1988 at 7.2.
Average wind speed in Casa Grande during June is 2.3 m/s. The windiest June was 1984 at 2.7 m/s, while the calmest were 1987 and 2006 at 2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 31.3°C | 30.6°C | 31.8°C | 32.3°C | 32.4°C | +1.1°C |
| Avg High | 40.5°C | 39.8°C | 40.8°C | 41.5°C | 41.4°C | +0.9°C |
| Avg Low | 22.1°C | 21.4°C | 22.9°C | 23.2°C | 23.5°C | +1.4°C |
| Avg Rain | 3 mm | 1 mm | 4 mm | 4 mm | 6 mm | +3 mm |
June temperatures in Casa Grande have risen by about 1.5°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 12.5°C (1993) to a record high of 49.3°C (1990).
Rainfall in June is one of the drier months, averaging 3 mm, with a wettest year of 22 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.3°C per decade while lows rose 0.5°C per decade, narrowing the gap between day and night.
A good time to visit Casa Grande
June is a good time to visit Casa Grande, with days averaging 40.7°C and nights around 22.6°C (mean 31.7°C, warmer than Casa Grande's yearly average) and low 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 | 41.5°C | 32.4°C | 23.3°C | 47.2°C | 20.8°C | 8 mm | 18% | 2.2 m/s | 8.5 |
| 2024 | 42.6°C | 33.8°C | 25.1°C | 45.3°C | 20.0°C | 6 mm | 19% | 2.2 m/s | 7.7 |
| 2023 | 38.9°C | 29.7°C | 20.6°C | 44.5°C | 16.3°C | 0 mm | 15% | 2.2 m/s | 8.5 |
| 2022 | 41.5°C | 33.0°C | 24.5°C | 45.4°C | 18.5°C | 17 mm | 22% | 2.2 m/s | 7.7 |
| 2021 🔥 | 42.7°C | 33.8°C | 24.9°C | 47.7°C | 19.3°C | 2 mm | 16% | 2.3 m/s | 8.1 |
| 2020 | 41.0°C | 31.8°C | 22.5°C | 45.0°C | 15.2°C | 0 mm | 15% | 2.6 m/s | 8.6 |
| 2019 | 40.3°C | 31.3°C | 22.3°C | 45.0°C | 18.1°C | 0 mm | 16% | 2.2 m/s | 8.6 |
| 2018 | 41.0°C | 31.9°C | 22.8°C | 44.0°C | 18.8°C | 12 mm | 17% | 2.1 m/s | 8.4 |
| 2017 | 42.6°C | 33.3°C | 24.1°C | 48.5°C | 18.8°C | 1 mm | 14% | 2.2 m/s | 8.6 |
| 2016 | 42.0°C | 33.5°C | 25.0°C | 47.7°C | 19.5°C | 11 mm | 19% | 2.1 m/s | 7.8 |
| 2015 | 41.0°C | 32.7°C | 24.4°C | 45.6°C | 19.2°C | 13 mm | 23% | 2.1 m/s | 7.8 |
| 2014 | 41.6°C | 32.5°C | 23.3°C | 43.6°C | 20.4°C | 0 mm | 13% | 2.3 m/s | 8.7 |
| 2013 | 42.7°C | 33.1°C | 23.5°C | 46.9°C | 21.0°C | 0 mm | 13% | 2.3 m/s | 8.6 |
| 2012 | 42.0°C | 32.6°C | 23.2°C | 44.6°C | 19.3°C | 1 mm | 15% | 2.3 m/s | 8.5 |
| 2011 | 40.8°C | 31.2°C | 21.7°C | 46.7°C | 16.7°C | 0 mm | 13% | 2.3 m/s | 8.7 |
| 2010 | 40.7°C | 31.3°C | 22.0°C | 45.2°C | 17.7°C | 0 mm | 16% | 2.2 m/s | 8.7 |
| 2009 | 37.8°C | 29.8°C | 21.8°C | 42.4°C | 16.2°C | 3 mm | 22% | 2.1 m/s | 7.7 |
| 2008 | 41.3°C | 32.1°C | 22.9°C | 46.0°C | 16.0°C | 2 mm | 17% | 2.1 m/s | 8.6 |
| 2007 | 40.8°C | 31.8°C | 22.8°C | 44.7°C | 15.2°C | 0 mm | 15% | 2.1 m/s | 8.4 |
| 2006 | 41.5°C | 33.0°C | 24.6°C | 44.0°C | 19.4°C | 5 mm | 18% | 2 m/s | 8 |
| 2005 | 40.3°C | 31.1°C | 22.0°C | 45.5°C | 17.4°C | 1 mm | 18% | 2.3 m/s | 8.5 |
| 2004 | 40.9°C | 31.5°C | 22.1°C | 45.1°C | 16.0°C | 0 mm | 13% | 2.3 m/s | 8.7 |
| 2003 | 40.8°C | 31.3°C | 21.8°C | 44.9°C | 18.3°C | 0 mm | 15% | 2.4 m/s | 8.8 |
| 2002 | 42.4°C | 32.8°C | 23.2°C | 45.9°C | 18.2°C | 0 mm | 13% | 2.5 m/s | 8.7 |
| 2001 | 41.3°C | 32.3°C | 23.3°C | 45.2°C | 16.7°C | 4 mm | 17% | 2.4 m/s | 8.5 |
| 2000 🌧️ | 40.5°C | 32.2°C | 24.0°C | 44.5°C | 18.2°C | 22 mm | 24% | 2.2 m/s | 7.4 |
| 1999 | 39.4°C | 30.8°C | 22.2°C | 44.2°C | 12.9°C | 1 mm | 20% | 2.4 m/s | 8.6 |
| 1998 | 38.2°C | 29.0°C | 19.8°C | 45.1°C | 14.6°C | 0 mm | 19% | 2.5 m/s | 8.7 |
| 1997 | 39.4°C | 30.3°C | 21.2°C | 43.3°C | 16.9°C | 1 mm | 17% | 2.5 m/s | 8.9 |
| 1996 | 42.0°C | 32.7°C | 23.4°C | 45.2°C | 18.5°C | 0 mm | 13% | 2.3 m/s | 8.2 |
| 1995 | 38.4°C | 29.0°C | 19.5°C | 43.8°C | 13.7°C | 0 mm | 16% | 2.4 m/s | 8.1 |
| 1994 | 42.1°C | 32.9°C | 23.7°C | 48.2°C | 18.2°C | 1 mm | 18% | 2.3 m/s | 8.1 |
| 1993 | 39.5°C | 30.3°C | 21.1°C | 45.7°C | 12.5°C | 0 mm | 18% | 2.3 m/s | 8.6 |
| 1992 | 39.1°C | 29.9°C | 20.7°C | 43.3°C | 16.3°C | 5 mm | 22% | 2.3 m/s | 8.1 |
| 1991 ❄️ | 38.4°C | 29.0°C | 19.7°C | 44.5°C | 13.5°C | 2 mm | 16% | 2.2 m/s | 7.6 |
| 1990 | 41.8°C | 32.5°C | 23.1°C | 49.3°C | 15.7°C | 3 mm | 18% | 2.5 m/s | 8.1 |
| 1989 | 40.8°C | 31.3°C | 21.8°C | 46.2°C | 16.2°C | 2 mm | 15% | 2.6 m/s | 8.4 |
| 1988 | 40.7°C | 31.6°C | 22.5°C | 46.3°C | 16.3°C | 3 mm | 18% | 2.1 m/s | 7.2 |
| 1987 | 40.8°C | 31.7°C | 22.6°C | 44.6°C | 19.6°C | 2 mm | 17% | 2 m/s | 8.5 |
| 1986 | 40.8°C | 32.0°C | 23.2°C | 44.3°C | 19.1°C | 3 mm | 18% | 2.3 m/s | 8.2 |
| 1985 | 42.2°C | 32.5°C | 22.8°C | 46.3°C | 16.0°C | 0 mm | 14% | 2.3 m/s | 8.6 |
| 1984 | 38.7°C | 30.3°C | 21.8°C | 43.2°C | 17.3°C | 15 mm | 23% | 2.7 m/s | 7.6 |
| 1983 | 39.2°C | 29.6°C | 20.1°C | 43.7°C | 14.7°C | 0 mm | 17% | 2.3 m/s | — |
| 1982 | 39.0°C | 29.5°C | 19.9°C | 43.9°C | 16.3°C | 0 mm | 14% | 2.3 m/s | — |
| 1981 | 42.4°C | 33.2°C | 24.0°C | 46.3°C | 17.8°C | 4 mm | 17% | 2.4 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 40.7°C with lows near 22.6°C (mean 31.7°C), based on 45 years of NASA POWER data.
June averages 3 mm of rainfall in Casa Grande, one of the drier months. The wettest on record was 22 mm in 2000.
The hottest June reached 49.3°C in 1990. The coldest dipped to 12.5°C in 1993.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 1.5°C. Daytime highs moved from 40.3°C to 41.4°C and overnight lows from 21.7°C to 23.7°C over the same span.
June is one of the warmer months of the year in Casa Grande and one of the drier months, so plan for around 40.7°C daytime highs and 22.6°C at night.
Not quite — June is the 10th coolest month in Casa Grande, averaging 31.7°C.
For June in Casa Grande, pack light, breathable clothing and sun protection, with typical highs of 40.7°C and lows of 22.6°C.
Relative humidity in June averages 17% — relatively dry.
Average wind speed in June is 2.3 m/s. The windiest June on record averaged 2.7 m/s (1984).
The wettest June on record was 2000 with 22 mm. On average, June sees 3 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 Casa Grande 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.
