June is one of the warmer months of the year in Newton Mearns, with average highs near 15.4°C and lows around 8.3°C (mean 11.9°C). It is one of the drier months, averaging 93 mm of rainfall and 84% relative humidity across the period.
June is one of the warmer months of the year in Newton Mearns. Across 45 years of records, the warmest June in Newton Mearns was 2023 — when the month averaged 14.6°C — while the coldest was 1991 at 10°C. Typical June days reach 15.4°C with nights near 8.3°C. The long-term trend is warming, about 0.4°C per decade.
June is one of the drier months in Newton Mearns, averaging 93 mm of rainfall. The wettest June on record was 2017 with 173 mm, while the driest was 1988 at 37 mm.
Relative humidity in Newton Mearns during June averages 84%. The most humid June was 2002 at 88%, and the least humid was 1995 at 81%.
June receives about 4.9 kWh/m²/day of solar energy in Newton Mearns. The sunniest June was 2018 at 5.8 kWh/m²/day, and the cloudiest was 2012 at 4.
Average wind speed in Newton Mearns during June is 3.2 m/s. The windiest Junes were 1994 and 2002 at 4.2 m/s, while the calmest were 1987, 1988 and 2014 at 2.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 11.4°C | 11.4°C | 12.0°C | 12.1°C | 12.9°C | +1.5°C |
| Avg High | 15.1°C | 15.0°C | 15.3°C | 15.6°C | 16.6°C | +1.5°C |
| Avg Low | 7.7°C | 7.8°C | 8.7°C | 8.6°C | 9.2°C | +1.5°C |
| Avg Rain | 76 mm | 92 mm | 108 mm | 102 mm | 82 mm | +7 mm |
June temperatures in Newton Mearns have risen by about 1.6°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 0.5°C (1989) to a record high of 26.7°C (2018).
Rainfall in June is one of the drier months, averaging 93 mm, with a wettest year of 173 mm.
One of the best times to visit Newton Mearns
June is one of the best times to visit Newton Mearns. Expect days averaging 15.4°C and nights around 8.3°C (mean 11.9°C) — warmer than Newton Mearns's yearly average — with higher rainfall (93 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 | 16.1°C | 12.7°C | 9.3°C | 22.9°C | 4.5°C | 109 mm | 84% | 4 m/s | 4.5 |
| 2024 | 14.9°C | 11.5°C | 8.0°C | 20.6°C | 3.5°C | 65 mm | 84% | 3.6 m/s | 4.9 |
| 2023 🔥 | 19.2°C | 14.6°C | 10.1°C | 24.0°C | 6.1°C | 73 mm | 82% | 2.7 m/s | 5.6 |
| 2022 | 15.9°C | 12.5°C | 9.0°C | 19.8°C | 5.3°C | 89 mm | 84% | 3.7 m/s | 5 |
| 2021 | 16.7°C | 13.0°C | 9.3°C | 22.0°C | 6.2°C | 48 mm | 83% | 3 m/s | 5.2 |
| 2020 | 16.7°C | 13.1°C | 9.4°C | 24.6°C | 5.2°C | 111 mm | 83% | 3.3 m/s | 4.7 |
| 2019 | 15.5°C | 12.0°C | 8.5°C | 22.6°C | 6.1°C | 101 mm | 84% | 3.3 m/s | 4.9 |
| 2018 | 17.8°C | 13.5°C | 9.1°C | 26.7°C | 6.4°C | 77 mm | 81% | 2.7 m/s | 5.8 |
| 2017 🌧️ | 15.1°C | 12.3°C | 9.5°C | 19.8°C | 6.6°C | 173 mm | 87% | 3.9 m/s | 4.1 |
| 2016 | 16.1°C | 12.5°C | 8.9°C | 22.4°C | 5.2°C | 93 mm | 85% | 2.8 m/s | 4.8 |
| 2015 | 14.2°C | 10.8°C | 7.4°C | 21.4°C | 3.9°C | 98 mm | 84% | 3.4 m/s | 4.7 |
| 2014 | 16.6°C | 13.0°C | 9.4°C | 21.9°C | 5.6°C | 89 mm | 84% | 2.4 m/s | 5 |
| 2013 | 15.3°C | 11.7°C | 8.1°C | 19.4°C | 3.5°C | 73 mm | 84% | 2.8 m/s | 4.9 |
| 2012 | 14.2°C | 11.1°C | 7.9°C | 19.6°C | 2.8°C | 159 mm | 84% | 3.1 m/s | 4 |
| 2011 | 13.9°C | 10.7°C | 7.6°C | 20.8°C | 4.8°C | 106 mm | 85% | 2.9 m/s | 4.5 |
| 2010 | 16.8°C | 13.0°C | 9.2°C | 20.2°C | 5.5°C | 55 mm | 82% | 2.5 m/s | 5.6 |
| 2009 | 16.3°C | 12.6°C | 8.9°C | 22.8°C | 4.4°C | 67 mm | 82% | 2.9 m/s | 5.5 |
| 2008 | 14.8°C | 11.4°C | 7.9°C | 18.7°C | 3.9°C | 106 mm | 83% | 3.5 m/s | 4.8 |
| 2007 | 15.4°C | 12.2°C | 9.0°C | 21.0°C | 5.9°C | 129 mm | 86% | 3 m/s | 4.5 |
| 2006 | 16.5°C | 12.9°C | 9.3°C | 22.2°C | 6.6°C | 84 mm | 85% | 3.1 m/s | 5 |
| 2005 | 15.9°C | 12.6°C | 9.2°C | 21.4°C | 5.1°C | 128 mm | 87% | 2.8 m/s | 4.5 |
| 2004 | 15.1°C | 11.9°C | 8.7°C | 19.0°C | 5.0°C | 118 mm | 86% | 3.6 m/s | 4.5 |
| 2003 | 16.1°C | 13.0°C | 9.9°C | 20.3°C | 6.6°C | 108 mm | 85% | 3.5 m/s | 4.8 |
| 2002 | 14.2°C | 11.5°C | 8.8°C | 19.3°C | 6.2°C | 157 mm | 88% | 4.2 m/s | 4.4 |
| 2001 | 14.0°C | 10.8°C | 7.7°C | 18.3°C | 2.6°C | 92 mm | 85% | 3.6 m/s | 4.3 |
| 2000 | 14.9°C | 11.3°C | 7.7°C | 22.9°C | 3.5°C | 88 mm | 84% | 3.5 m/s | 4.4 |
| 1999 | 14.2°C | 10.7°C | 7.1°C | 19.2°C | 2.5°C | 110 mm | 85% | 3.1 m/s | 4.8 |
| 1998 | 14.3°C | 10.9°C | 7.6°C | 21.4°C | 2.4°C | 124 mm | 84% | 3.2 m/s | 4.8 |
| 1997 | 14.9°C | 11.2°C | 7.5°C | 18.0°C | 5.2°C | 96 mm | 83% | 3.4 m/s | 4.8 |
| 1996 | 15.1°C | 11.3°C | 7.6°C | 21.2°C | 3.4°C | 62 mm | 83% | 3.5 m/s | 5.7 |
| 1995 | 16.3°C | 11.9°C | 7.5°C | 24.7°C | 3.7°C | 41 mm | 81% | 3.1 m/s | 5.7 |
| 1994 | 13.9°C | 10.8°C | 7.7°C | 18.3°C | 4.9°C | 100 mm | 85% | 4.2 m/s | 4.5 |
| 1993 | 15.5°C | 12.0°C | 8.6°C | 19.6°C | 3.9°C | 73 mm | 85% | 3.1 m/s | 4.6 |
| 1992 | 17.2°C | 13.2°C | 9.1°C | 21.8°C | 6.2°C | 52 mm | 83% | 3.1 m/s | 5.3 |
| 1991 ❄️ | 13.5°C | 10.0°C | 6.6°C | 16.3°C | 1.3°C | 134 mm | 83% | 2.9 m/s | 4.5 |
| 1990 | 14.9°C | 11.6°C | 8.3°C | 20.1°C | 5.6°C | 132 mm | 83% | 3.1 m/s | 4.5 |
| 1989 | 15.1°C | 11.5°C | 8.0°C | 24.1°C | 0.5°C | 87 mm | 81% | 2.9 m/s | 5.1 |
| 1988 | 17.2°C | 12.8°C | 8.5°C | 22.3°C | 4.1°C | 37 mm | 83% | 2.4 m/s | 5.5 |
| 1987 | 13.6°C | 10.2°C | 6.9°C | 17.7°C | 3.4°C | 96 mm | 82% | 2.4 m/s | 4.7 |
| 1986 | 16.1°C | 11.7°C | 7.4°C | 24.3°C | 2.1°C | 62 mm | 84% | 3.4 m/s | 4.9 |
| 1985 | 14.1°C | 10.3°C | 6.6°C | 20.1°C | 2.5°C | 78 mm | 81% | 3 m/s | 4.9 |
| 1984 | 15.5°C | 11.8°C | 8.1°C | 21.0°C | 4.8°C | 68 mm | 83% | 3.5 m/s | 4.8 |
| 1983 | 14.4°C | 10.9°C | 7.5°C | 20.8°C | 2.3°C | 84 mm | 85% | 3.6 m/s | — |
| 1982 | 15.9°C | 12.3°C | 8.7°C | 25.4°C | 3.9°C | 70 mm | 82% | 3.1 m/s | — |
| 1981 | 14.3°C | 11.1°C | 7.8°C | 17.4°C | 2.6°C | 103 mm | 84% | 3.7 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 15.4°C with lows near 8.3°C (mean 11.9°C), based on 45 years of NASA POWER data.
June averages 93 mm of rainfall in Newton Mearns, one of the drier months. The wettest on record was 173 mm in 2017.
The hottest June reached 26.7°C in 2018. The coldest dipped to 0.5°C in 1989.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 1.6°C. Daytime highs moved from 14.8°C to 16.6°C and overnight lows from 7.7°C to 9.1°C over the same span.
June is one of the warmer months of the year in Newton Mearns and one of the drier months, so plan for around 15.4°C daytime highs and 8.3°C at night.
Not quite — June is the 10th coolest month in Newton Mearns, averaging 11.9°C.
For June in Newton Mearns, pack light layers you can adjust through the day, with typical highs of 15.4°C and lows of 8.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 84% — quite humid.
Average wind speed in June is 3.2 m/s. The windiest June on record averaged 4.2 m/s (1994).
The wettest June on record was 2017 with 173 mm. On average, June sees 93 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 Newton Mearns 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.
