June is one of the warmer months of the year in Mcallen, with average highs near 36.1°C and lows around 24.6°C (mean 30.4°C). It is a relatively wet time of year, averaging 74 mm of rainfall and 66% relative humidity across the period.
June is one of the warmer months of the year in Mcallen. Across 45 years of records, the warmest June in Mcallen was 1998 — when the month averaged 32.9°C — while the coldest was 1993 at 28°C. Typical June days reach 36.1°C with nights near 24.6°C. The long-term trend is warming, about 0.3°C per decade.
June is a relatively wet time of year in Mcallen, averaging 74 mm of rainfall. The wettest June on record was 1993 with 274 mm, while the driest was 2022 at 11 mm.
Relative humidity in Mcallen during June averages 66%. The most humid June was 1993 at 79%, and the least humid was 2005 at 58%.
June receives about 6.8 kWh/m²/day of solar energy in Mcallen. The sunniest June was 2023 at 7.6 kWh/m²/day, and the cloudiest was 1993 at 5.6.
Average wind speed in Mcallen during June is 3.7 m/s. The windiest June was 1998 at 4.9 m/s, while the calmest was 1987 at 2.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 29.5°C | 30.5°C | 30.8°C | 30.5°C | 30.8°C | +1.3°C |
| Avg High | 35.0°C | 36.4°C | 36.7°C | 36.1°C | 36.5°C | +1.5°C |
| Avg Low | 23.9°C | 24.7°C | 24.8°C | 24.8°C | 25.2°C | +1.3°C |
| Avg Rain | 83 mm | 76 mm | 52 mm | 88 mm | 69 mm | -13 mm |
June temperatures in Mcallen have risen by about 1.6°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 17.5°C (1984) to a record high of 47.6°C (1998).
Rainfall in June is a relatively wet time of year, averaging 74 mm, with a wettest year of 274 mm.
A quieter season to visit Mcallen
If your dates are flexible, the more temperate months of March and November tend to be the most comfortable for visiting Mcallen. That said, June — with days averaging 36.1°C and nights around 24.6°C (mean 30.4°C) and moderate rainfall (74 mm) — can still be rewarding for travellers who don't mind the warmth, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 35.9°C | 30.6°C | 25.4°C | 38.6°C | 24.1°C | 88 mm | 70% | 3.8 m/s | 6.5 |
| 2024 | 37.9°C | 32.4°C | 26.8°C | 43.0°C | 25.7°C | 119 mm | 65% | 3.7 m/s | 6.7 |
| 2023 | 39.0°C | 32.3°C | 25.5°C | 45.0°C | 22.0°C | 23 mm | 64% | 3.9 m/s | 7.6 |
| 2022 | 36.9°C | 30.7°C | 24.6°C | 39.4°C | 21.9°C | 11 mm | 64% | 3.7 m/s | 7.5 |
| 2021 | 34.3°C | 29.3°C | 24.4°C | 38.5°C | 20.9°C | 85 mm | 73% | 3.2 m/s | 6.4 |
| 2020 | 35.0°C | 29.7°C | 24.4°C | 39.6°C | 20.4°C | 89 mm | 69% | 3.4 m/s | 6.8 |
| 2019 | 37.0°C | 31.3°C | 25.6°C | 43.5°C | 23.0°C | 137 mm | 67% | 3.5 m/s | 6.9 |
| 2018 | 35.5°C | 30.3°C | 25.2°C | 40.2°C | 23.4°C | 178 mm | 70% | 4 m/s | 6.7 |
| 2017 | 37.1°C | 31.0°C | 25.0°C | 43.8°C | 23.1°C | 52 mm | 63% | 3.5 m/s | 7.2 |
| 2016 | 34.0°C | 29.0°C | 24.1°C | 37.4°C | 20.2°C | 116 mm | 73% | 3 m/s | 6.8 |
| 2015 | 33.5°C | 28.6°C | 23.8°C | 36.0°C | 19.9°C | 60 mm | 73% | 3.4 m/s | 6.5 |
| 2014 | 36.6°C | 30.9°C | 25.2°C | 40.5°C | 22.5°C | 17 mm | 64% | 4.6 m/s | 6.8 |
| 2013 | 37.2°C | 31.0°C | 24.8°C | 41.1°C | 22.3°C | 26 mm | 62% | 4 m/s | 7 |
| 2012 | 37.1°C | 31.0°C | 24.8°C | 41.3°C | 23.0°C | 44 mm | 61% | 3.6 m/s | 7 |
| 2011 | 37.0°C | 30.8°C | 24.6°C | 40.7°C | 22.0°C | 94 mm | 62% | 4.1 m/s | 7.1 |
| 2010 | 35.8°C | 30.6°C | 25.4°C | 39.7°C | 22.7°C | 157 mm | 70% | 4.1 m/s | 6.8 |
| 2009 | 36.9°C | 30.8°C | 24.8°C | 39.8°C | 22.6°C | 22 mm | 64% | 4 m/s | 7.2 |
| 2008 | 36.8°C | 30.8°C | 24.7°C | 40.2°C | 23.5°C | 11 mm | 62% | 4.5 m/s | 7.3 |
| 2007 | 36.1°C | 30.4°C | 24.7°C | 39.1°C | 22.7°C | 89 mm | 67% | 3.9 m/s | 6.6 |
| 2006 | 36.6°C | 30.2°C | 23.7°C | 39.6°C | 20.3°C | 48 mm | 62% | 3.4 m/s | 7.1 |
| 2005 | 38.6°C | 32.1°C | 25.5°C | 41.0°C | 24.3°C | 12 mm | 58% | 3.9 m/s | 7 |
| 2004 | 34.4°C | 29.6°C | 24.8°C | 38.2°C | 23.0°C | 133 mm | 72% | 3.9 m/s | 6.6 |
| 2003 | 37.3°C | 31.4°C | 25.6°C | 40.5°C | 23.9°C | 34 mm | 64% | 3.3 m/s | 6.9 |
| 2002 | 37.2°C | 31.2°C | 25.1°C | 42.0°C | 21.7°C | 45 mm | 60% | 3.7 m/s | 6.8 |
| 2001 | 37.4°C | 31.0°C | 24.6°C | 42.0°C | 22.7°C | 59 mm | 62% | 3.6 m/s | 7.4 |
| 2000 | 35.4°C | 30.0°C | 24.6°C | 39.0°C | 23.0°C | 65 mm | 66% | 4.4 m/s | 6.5 |
| 1999 | 35.7°C | 30.4°C | 25.2°C | 39.5°C | 24.1°C | 65 mm | 66% | 3.9 m/s | 6.8 |
| 1998 🔥 | 39.7°C | 32.9°C | 26.2°C | 47.6°C | 23.3°C | 13 mm | 60% | 4.9 m/s | 7.1 |
| 1997 | 35.3°C | 29.6°C | 23.8°C | 38.9°C | 20.0°C | 83 mm | 69% | 3.7 m/s | 6.8 |
| 1996 | 37.1°C | 30.9°C | 24.8°C | 40.4°C | 21.5°C | 23 mm | 61% | 3.8 m/s | 7.2 |
| 1995 | 36.3°C | 30.0°C | 23.6°C | 40.3°C | 20.2°C | 43 mm | 61% | 3.5 m/s | 6.9 |
| 1994 | 36.7°C | 30.8°C | 25.0°C | 41.1°C | 23.5°C | 73 mm | 65% | 3.6 m/s | 6.4 |
| 1993 ❄️ 🌧️ | 32.2°C | 28.0°C | 23.9°C | 38.6°C | 21.1°C | 274 mm | 79% | 3.6 m/s | 5.6 |
| 1992 | 36.7°C | 30.2°C | 23.8°C | 41.1°C | 22.2°C | 37 mm | 68% | 3.5 m/s | 7.1 |
| 1991 | 36.1°C | 30.5°C | 24.9°C | 39.4°C | 23.0°C | 126 mm | 66% | 3.5 m/s | 6.3 |
| 1990 | 37.8°C | 31.5°C | 25.3°C | 40.1°C | 24.0°C | 17 mm | 61% | 4.5 m/s | 7.3 |
| 1989 | 37.1°C | 30.8°C | 24.5°C | 42.1°C | 18.9°C | 52 mm | 62% | 3.9 m/s | 6.9 |
| 1988 | 35.5°C | 29.5°C | 23.4°C | 40.1°C | 21.3°C | 78 mm | 64% | 3 m/s | 6.8 |
| 1987 | 32.9°C | 28.1°C | 23.4°C | 37.1°C | 21.3°C | 149 mm | 77% | 2.9 m/s | 6.5 |
| 1986 | 34.7°C | 29.2°C | 23.8°C | 37.1°C | 22.3°C | 96 mm | 70% | 3.4 m/s | 6.4 |
| 1985 | 33.6°C | 28.5°C | 23.3°C | 37.8°C | 19.4°C | 119 mm | 71% | 3.4 m/s | 6.5 |
| 1984 | 35.3°C | 29.5°C | 23.6°C | 39.0°C | 17.5°C | 45 mm | 65% | 4 m/s | 6.7 |
| 1983 | 35.9°C | 29.8°C | 23.7°C | 40.0°C | 19.2°C | 60 mm | 65% | 3.4 m/s | — |
| 1982 | 36.6°C | 30.7°C | 24.7°C | 38.7°C | 22.5°C | 12 mm | 65% | 4.2 m/s | — |
| 1981 | 33.4°C | 29.0°C | 24.6°C | 37.4°C | 22.5°C | 132 mm | 75% | 3.4 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 36.1°C with lows near 24.6°C (mean 30.4°C), based on 45 years of NASA POWER data.
June averages 74 mm of rainfall in Mcallen, a relatively wet time of year. The wettest on record was 274 mm in 1993.
The hottest June reached 47.6°C in 1998. The coldest dipped to 17.5°C in 1984.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 1.6°C. Daytime highs moved from 35°C to 36.8°C and overnight lows from 24°C to 25.3°C over the same span.
June is one of the warmer months of the year in Mcallen and a relatively wet time of year, so plan for around 36.1°C daytime highs and 24.6°C at night.
Not quite — June is the 11th coolest month in Mcallen, averaging 30.4°C.
For June in Mcallen, pack light, breathable clothing and sun protection, with typical highs of 36.1°C and lows of 24.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 66% — moderately humid.
Average wind speed in June is 3.7 m/s. The windiest June on record averaged 4.9 m/s (1998).
The wettest June on record was 1993 with 274 mm. On average, June sees 74 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 Mcallen 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.
