June is one of the warmer months of the year in Lethbridge, with average highs near 21.3°C and lows around 8.6°C (mean 15°C). It is a relatively wet time of year, averaging 82 mm of rainfall and 61% relative humidity across the period.
June is one of the warmer months of the year in Lethbridge. Across 45 years of records, the warmest Junes in Lethbridge were 1988 and 2021 — when the month averaged 18.8°C — while the coldest was 1981 at 12.1°C. Typical June days reach 21.3°C with nights near 8.6°C. The long-term trend is warming, about 0.2°C per decade.
June is a relatively wet time of year in Lethbridge, averaging 82 mm of rainfall. The wettest June on record was 2005 with 271 mm, while the driest was 1985 at 31 mm.
Relative humidity in Lethbridge during June averages 61%. The most humid June was 2005 at 74%, and the least humid was 1988 at 50%.
June receives about 6.5 kWh/m²/day of solar energy in Lethbridge. The sunniest June was 1985 at 7.4 kWh/m²/day, and the cloudiest was 1992 at 5.5.
Average wind speed in Lethbridge during June is 2.5 m/s. The windiest June was 1990 at 3 m/s, while the calmest was 1982 at 1.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 15.3°C | 14.3°C | 14.7°C | 14.9°C | 16.2°C | +0.9°C |
| Avg High | 22.0°C | 20.5°C | 21.0°C | 21.1°C | 22.6°C | +0.6°C |
| Avg Low | 8.7°C | 8.2°C | 8.4°C | 8.7°C | 9.7°C | +1°C |
| Avg Rain | 66 mm | 97 mm | 97 mm | 79 mm | 65 mm | 0 mm |
June temperatures in Lethbridge have risen by about 2.6°C between 1981–1985 and 2021–2025.
June has ranged from a record low of -0.8°C (2009) to a record high of 36°C (2021).
Rainfall in June is a relatively wet time of year, averaging 82 mm, with a wettest year of 271 mm.
One of the best times to visit Lethbridge
June is one of the best times to visit Lethbridge. Expect days averaging 21.3°C and nights around 8.6°C (mean 15°C) — warmer than Lethbridge's yearly average — with higher rainfall (82 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 | 22.8°C | 16.2°C | 9.6°C | 32.5°C | 2.0°C | 69 mm | 55% | 2.1 m/s | 6.8 |
| 2024 | 21.0°C | 14.6°C | 8.2°C | 27.3°C | 2.2°C | 60 mm | 57% | 2.7 m/s | 6.8 |
| 2023 | 23.9°C | 17.5°C | 11.0°C | 30.6°C | 5.1°C | 40 mm | 56% | 2.2 m/s | 6.7 |
| 2022 | 21.1°C | 15.0°C | 8.9°C | 28.6°C | 4.8°C | 91 mm | 61% | 2.5 m/s | 6 |
| 2021 | 25.9°C | 18.8°C | 11.8°C | 36.0°C | 5.1°C | 39 mm | 51% | 2.5 m/s | 7.2 |
| 2020 | 20.8°C | 14.9°C | 8.9°C | 29.7°C | 5.0°C | 94 mm | 66% | 2.8 m/s | 6 |
| 2019 | 21.5°C | 15.1°C | 8.8°C | 29.3°C | 3.2°C | 47 mm | 61% | 2.2 m/s | 6.8 |
| 2018 | 21.5°C | 15.2°C | 9.0°C | 28.9°C | 5.4°C | 60 mm | 60% | 2.8 m/s | 6.6 |
| 2017 | 22.5°C | 16.0°C | 9.5°C | 29.1°C | 6.1°C | 62 mm | 59% | 2.6 m/s | 7.1 |
| 2016 | 23.5°C | 16.6°C | 9.7°C | 33.2°C | 4.0°C | 48 mm | 54% | 2.8 m/s | 7.2 |
| 2015 | 24.4°C | 17.5°C | 10.6°C | 33.2°C | 4.5°C | 35 mm | 56% | 1.9 m/s | 7.2 |
| 2014 | 18.8°C | 13.1°C | 7.4°C | 24.1°C | 2.6°C | 133 mm | 67% | 2.1 m/s | 5.9 |
| 2013 | 20.6°C | 14.5°C | 8.4°C | 29.3°C | 2.1°C | 114 mm | 66% | 2.2 m/s | 6.5 |
| 2012 | 20.1°C | 14.1°C | 8.1°C | 26.0°C | 3.4°C | 110 mm | 66% | 2.9 m/s | 5.9 |
| 2011 | 19.0°C | 13.3°C | 7.5°C | 25.1°C | 4.6°C | 68 mm | 68% | 2.6 m/s | 5.9 |
| 2010 | 19.4°C | 13.5°C | 7.5°C | 28.6°C | 3.1°C | 110 mm | 65% | 2.3 m/s | 6.5 |
| 2009 | 20.6°C | 13.9°C | 7.3°C | 26.7°C | -0.8°C | 50 mm | 55% | 2.3 m/s | 6.9 |
| 2008 | 21.2°C | 14.8°C | 8.4°C | 34.9°C | 4.5°C | 78 mm | 58% | 2.5 m/s | 6.8 |
| 2007 | 22.7°C | 15.8°C | 9.0°C | 29.9°C | 5.4°C | 36 mm | 57% | 2.7 m/s | 6.9 |
| 2006 | 21.8°C | 15.9°C | 10.1°C | 30.4°C | 6.5°C | 90 mm | 66% | 2.4 m/s | 6.2 |
| 2005 🌧️ | 18.5°C | 13.2°C | 8.0°C | 29.7°C | 3.8°C | 271 mm | 74% | 2.4 m/s | 5.6 |
| 2004 | 20.9°C | 14.5°C | 8.1°C | 27.9°C | 2.6°C | 80 mm | 60% | 2 m/s | 6.4 |
| 2003 | 21.7°C | 15.3°C | 8.9°C | 31.9°C | 4.6°C | 53 mm | 60% | 2.3 m/s | 6.6 |
| 2002 | 20.4°C | 14.4°C | 8.4°C | 32.2°C | 1.7°C | 183 mm | 65% | 2.7 m/s | 6.3 |
| 2001 | 20.9°C | 14.4°C | 7.8°C | 28.5°C | 3.9°C | 78 mm | 56% | 2.6 m/s | 6.8 |
| 2000 | 21.2°C | 14.6°C | 8.0°C | 28.0°C | -0.4°C | 50 mm | 58% | 2.5 m/s | 6.3 |
| 1999 | 20.0°C | 13.9°C | 7.9°C | 28.7°C | 2.7°C | 81 mm | 58% | 2.7 m/s | 6.3 |
| 1998 | 18.8°C | 13.4°C | 8.0°C | 24.6°C | 1.3°C | 131 mm | 67% | 2.3 m/s | 5.8 |
| 1997 | 20.6°C | 14.8°C | 9.0°C | 25.6°C | 5.1°C | 86 mm | 64% | 2.4 m/s | 6.5 |
| 1996 | 20.8°C | 14.3°C | 7.7°C | 28.9°C | 3.9°C | 67 mm | 61% | 2.6 m/s | 7 |
| 1995 | 20.7°C | 14.3°C | 8.0°C | 26.9°C | 0.8°C | 113 mm | 64% | 2.2 m/s | 5.8 |
| 1994 | 21.6°C | 15.0°C | 8.4°C | 30.8°C | 1.5°C | 53 mm | 58% | 2.6 m/s | 6.7 |
| 1993 | 19.2°C | 13.1°C | 7.0°C | 28.7°C | -0.1°C | 125 mm | 65% | 2.6 m/s | 6.1 |
| 1992 | 22.6°C | 16.5°C | 10.4°C | 31.6°C | 4.4°C | 138 mm | 63% | 2 m/s | 5.5 |
| 1991 | 19.1°C | 13.4°C | 7.6°C | 26.4°C | 3.0°C | 133 mm | 64% | 2.7 m/s | 6.3 |
| 1990 | 21.3°C | 14.5°C | 7.7°C | 31.1°C | 1.6°C | 41 mm | 60% | 3 m/s | 6.9 |
| 1989 | 21.7°C | 15.2°C | 8.7°C | 28.4°C | 5.1°C | 95 mm | 61% | 2.3 m/s | 7 |
| 1988 🔥 | 26.4°C | 18.8°C | 11.2°C | 34.3°C | 4.8°C | 62 mm | 50% | 2.6 m/s | 6.4 |
| 1987 | 24.5°C | 17.5°C | 10.5°C | 32.9°C | 4.6°C | 47 mm | 51% | 2.7 m/s | 6.9 |
| 1986 | 24.1°C | 17.2°C | 10.2°C | 31.2°C | 6.2°C | 46 mm | 56% | 2.5 m/s | 7.3 |
| 1985 | 21.1°C | 13.9°C | 6.7°C | 30.1°C | 1.5°C | 31 mm | 54% | 2.5 m/s | 7.4 |
| 1984 | 20.8°C | 14.2°C | 7.6°C | 30.5°C | 2.3°C | 78 mm | 61% | 2.5 m/s | 6.4 |
| 1983 | 19.8°C | 13.8°C | 7.9°C | 26.3°C | 4.1°C | 64 mm | 64% | 2.4 m/s | — |
| 1982 | 21.6°C | 15.2°C | 8.9°C | 28.4°C | 0.7°C | 73 mm | 65% | 1.7 m/s | — |
| 1981 ❄️ | 18.0°C | 12.1°C | 6.2°C | 26.1°C | 2.7°C | 96 mm | 66% | 2.9 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 21.3°C with lows near 8.6°C (mean 15°C), based on 45 years of NASA POWER data.
June averages 82 mm of rainfall in Lethbridge, a relatively wet time of year. The wettest on record was 271 mm in 2005.
The hottest June reached 36°C in 2021. The coldest dipped to -0.8°C in 2009.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 2.6°C. Daytime highs moved from 20.3°C to 22.9°C and overnight lows from 7.5°C to 9.9°C over the same span.
June is one of the warmer months of the year in Lethbridge and a relatively wet time of year, so plan for around 21.3°C daytime highs and 8.6°C at night.
Not quite — June is the 10th coolest month in Lethbridge, averaging 15°C.
For June in Lethbridge, pack light layers you can adjust through the day, with typical highs of 21.3°C and lows of 8.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 61% — moderately humid.
Average wind speed in June is 2.5 m/s. The windiest June on record averaged 3 m/s (1990).
The wettest June on record was 2005 with 271 mm. On average, June sees 82 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 Lethbridge 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.
