June is one of the warmer months of the year in Grand Falls, with average highs near 17.4°C and lows around 6.3°C (mean 11.9°C). It is about average for rainfall, averaging 88 mm of rainfall and 82% relative humidity across the period.
June is one of the warmer months of the year in Grand Falls. Across 45 years of records, the warmest June in Grand Falls was 2006 — when the month averaged 15.8°C — while the coldest was 2018 at 9.1°C. Typical June days reach 17.4°C with nights near 6.3°C. The long-term trend is warming, about 0.3°C per decade.
June is about average for rainfall in Grand Falls, averaging 88 mm of rainfall. The wettest June on record was 2010 with 134 mm, while the driest were 1987 and 2007 at 39 mm.
Relative humidity in Grand Falls during June averages 82%. The most humid June was 2011 at 89%, and the least humid was 1989 at 76%.
June receives about 5 kWh/m²/day of solar energy in Grand Falls. The sunniest June was 1986 at 6 kWh/m²/day, and the cloudiest was 2011 at 3.5.
Average wind speed in Grand Falls during June is 0.1 m/s. The windiest Junes were 2023, 2024 and 2025, among others at 0.1 m/s, while the calmest were 2023, 2024 and 2025, among others at 0.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 11.7°C | 11.6°C | 12.1°C | 11.2°C | 13.5°C | +1.8°C |
| Avg High | 17.3°C | 17.4°C | 17.5°C | 16.6°C | 19.1°C | +1.8°C |
| Avg Low | 6.0°C | 5.7°C | 6.7°C | 5.9°C | 7.8°C | +1.8°C |
| Avg Rain | 85 mm | 84 mm | 80 mm | 99 mm | 94 mm | +10 mm |
June temperatures in Grand Falls have risen by about 2°C between 1981–1985 and 2021–2025.
June has ranged from a record low of -3.6°C (1994) to a record high of 29.5°C (2020).
Rainfall in June is about average for rainfall, averaging 88 mm, with a wettest year of 134 mm.
One of the best times to visit Grand Falls
June is one of the best times to visit Grand Falls. Expect days averaging 17.4°C and nights around 6.3°C (mean 11.9°C) — warmer than Grand Falls's yearly average — with higher rainfall (88 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 | 19.5°C | 13.4°C | 7.3°C | 25.3°C | 3.0°C | 102 mm | 81% | 0.1 m/s | 5.5 |
| 2024 | 19.3°C | 14.1°C | 9.0°C | 29.3°C | 3.9°C | 119 mm | 85% | 0.1 m/s | 4.6 |
| 2023 | 16.0°C | 11.0°C | 6.0°C | 28.3°C | -1.4°C | 132 mm | 88% | 0.1 m/s | 4.2 |
| 2022 | 19.4°C | 13.8°C | 8.2°C | 26.9°C | 1.0°C | 57 mm | 81% | 0.1 m/s | 5.5 |
| 2021 | 20.6°C | 14.3°C | 8.1°C | 28.1°C | 2.7°C | 59 mm | 79% | 0.1 m/s | 5.7 |
| 2020 | 19.9°C | 14.1°C | 8.4°C | 29.5°C | 0.9°C | 96 mm | 82% | 0.1 m/s | 4.7 |
| 2019 | 17.0°C | 11.8°C | 6.5°C | 23.2°C | 0.9°C | 93 mm | 84% | 0.1 m/s | 4.7 |
| 2018 ❄️ | 14.9°C | 9.1°C | 3.3°C | 25.2°C | -3.2°C | 129 mm | 82% | 0.1 m/s | 4.8 |
| 2017 | 17.5°C | 12.0°C | 6.5°C | 28.0°C | -0.9°C | 84 mm | 83% | 0.1 m/s | 5.2 |
| 2016 | 17.2°C | 11.7°C | 6.3°C | 25.2°C | -3.3°C | 106 mm | 83% | 0.1 m/s | 5 |
| 2015 | 16.1°C | 10.6°C | 5.1°C | 23.0°C | 1.0°C | 86 mm | 82% | 0.1 m/s | 5.4 |
| 2014 | 17.9°C | 12.4°C | 7.0°C | 28.2°C | 1.3°C | 103 mm | 83% | 0.1 m/s | 5.2 |
| 2013 | 16.4°C | 11.1°C | 5.9°C | 25.7°C | 0.9°C | 72 mm | 82% | 0.1 m/s | 4.5 |
| 2012 | 17.7°C | 12.5°C | 7.3°C | 25.6°C | 1.6°C | 54 mm | 83% | 0.1 m/s | 5.4 |
| 2011 | 14.4°C | 10.2°C | 6.1°C | 22.4°C | -1.5°C | 125 mm | 89% | 0.1 m/s | 3.5 |
| 2010 🌧️ | 16.8°C | 11.1°C | 5.5°C | 23.6°C | 1.5°C | 134 mm | 80% | 0.1 m/s | 5.7 |
| 2009 | 18.9°C | 13.2°C | 7.6°C | 27.1°C | 1.8°C | 113 mm | 82% | 0.1 m/s | 5.3 |
| 2008 | 15.3°C | 11.1°C | 7.0°C | 21.5°C | 3.1°C | 93 mm | 87% | 0.1 m/s | 4.1 |
| 2007 | 18.4°C | 12.8°C | 7.2°C | 27.9°C | -2.1°C | 39 mm | 84% | 0.1 m/s | 4.8 |
| 2006 🔥 | 21.2°C | 15.8°C | 10.3°C | 27.8°C | 4.3°C | 94 mm | 82% | 0.1 m/s | 4.9 |
| 2005 | 17.3°C | 11.5°C | 5.6°C | 27.1°C | 1.4°C | 55 mm | 81% | 0.1 m/s | 5.3 |
| 2004 | 14.7°C | 9.9°C | 5.2°C | 22.0°C | 1.1°C | 118 mm | 84% | 0.1 m/s | 4.5 |
| 2003 | 18.1°C | 11.8°C | 5.6°C | 27.8°C | -1.1°C | 56 mm | 78% | 0.1 m/s | 5.9 |
| 2002 | 15.8°C | 10.6°C | 5.4°C | 24.1°C | -1.1°C | 74 mm | 82% | 0.1 m/s | 5 |
| 2001 | 17.7°C | 12.1°C | 6.5°C | 25.7°C | 2.3°C | 63 mm | 81% | 0.1 m/s | 5.2 |
| 2000 | 17.5°C | 11.8°C | 6.1°C | 27.0°C | -1.7°C | 90 mm | 79% | 0.1 m/s | 5.1 |
| 1999 | 21.0°C | 14.1°C | 7.3°C | 28.5°C | -1.6°C | 45 mm | 79% | 0.1 m/s | 5.7 |
| 1998 | 17.8°C | 12.0°C | 6.2°C | 26.1°C | 1.8°C | 67 mm | 81% | 0.1 m/s | 5.6 |
| 1997 | 16.5°C | 10.7°C | 5.0°C | 23.5°C | -0.8°C | 71 mm | 82% | 0.1 m/s | 5.3 |
| 1996 | 17.4°C | 11.4°C | 5.3°C | 24.2°C | -0.7°C | 85 mm | 82% | 0.1 m/s | 5 |
| 1995 | 17.1°C | 11.4°C | 5.7°C | 25.6°C | 0.6°C | 98 mm | 81% | 0.1 m/s | 4.7 |
| 1994 | 17.4°C | 11.6°C | 5.8°C | 25.7°C | -3.6°C | 105 mm | 83% | 0.1 m/s | 4.8 |
| 1993 | 15.3°C | 10.1°C | 4.9°C | 26.4°C | 0.6°C | 73 mm | 84% | 0.1 m/s | 4.3 |
| 1992 | 16.1°C | 11.0°C | 5.9°C | 22.4°C | -2.2°C | 115 mm | 84% | 0.1 m/s | 4.7 |
| 1991 | 15.9°C | 10.3°C | 4.7°C | 24.4°C | -0.2°C | 111 mm | 83% | 0.1 m/s | 4.8 |
| 1990 | 19.5°C | 13.0°C | 6.6°C | 26.2°C | 0.4°C | 64 mm | 79% | 0.1 m/s | 5.7 |
| 1989 | 19.7°C | 13.8°C | 7.8°C | 28.8°C | -0.3°C | 45 mm | 76% | 0.1 m/s | 5.1 |
| 1988 | 16.7°C | 11.6°C | 6.5°C | 28.8°C | 0.3°C | 111 mm | 82% | 0.1 m/s | 4.7 |
| 1987 | 17.1°C | 11.6°C | 6.1°C | 24.1°C | 1.3°C | 39 mm | 81% | 0.1 m/s | 5 |
| 1986 | 17.6°C | 11.5°C | 5.4°C | 25.1°C | 1.0°C | 67 mm | 77% | 0.1 m/s | 6 |
| 1985 | 17.6°C | 11.7°C | 5.9°C | 24.9°C | 0.4°C | 92 mm | 82% | 0.1 m/s | 5.3 |
| 1984 | 15.3°C | 10.1°C | 4.9°C | 22.0°C | 0.0°C | 88 mm | 83% | 0.1 m/s | 4.1 |
| 1983 | 18.2°C | 12.2°C | 6.1°C | 25.6°C | -0.3°C | 89 mm | 81% | 0.1 m/s | — |
| 1982 | 15.5°C | 10.1°C | 4.7°C | 21.5°C | -0.1°C | 96 mm | 81% | 0.1 m/s | — |
| 1981 | 17.9°C | 12.4°C | 6.8°C | 25.9°C | -2.2°C | 134 mm | 82% | 0.1 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 17.4°C with lows near 6.3°C (mean 11.9°C), based on 45 years of NASA POWER data.
June averages 88 mm of rainfall in Grand Falls, about average for rainfall. The wettest on record was 134 mm in 2010.
The hottest June reached 29.5°C in 2020. The coldest dipped to -3.6°C in 1994.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 2°C. Daytime highs moved from 16.9°C to 19°C and overnight lows from 5.7°C to 7.7°C over the same span.
June is one of the warmer months of the year in Grand Falls and about average for rainfall, so plan for around 17.4°C daytime highs and 6.3°C at night.
Not quite — June is the 10th coolest month in Grand Falls, averaging 11.9°C.
For June in Grand Falls, pack warm layers and a jacket for chilly mornings, with typical highs of 17.4°C and lows of 6.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 82% — quite humid.
Average wind speed in June is 0.1 m/s. The windiest June on record averaged 0.1 m/s (1981).
The wettest June on record was 2010 with 134 mm. On average, June sees 88 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 Grand Falls 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.
