June is one of the warmer months of the year in Round Lake, with average highs near 24.8°C and lows around 13.8°C (mean 19.3°C). It is a relatively wet time of year, averaging 109 mm of rainfall and 76% relative humidity across the period.
June is one of the warmer months of the year in Round Lake. Across 45 years of records, the warmest June in Round Lake was 2005 — when the month averaged 23°C — while the coldest was 1982 at 15.2°C. Typical June days reach 24.8°C with nights near 13.8°C. The long-term trend is warming, about 0.4°C per decade.
June is a relatively wet time of year in Round Lake, averaging 109 mm of rainfall. The wettest June on record was 1993 with 241 mm, while the driest was 2012 at 21 mm.
Relative humidity in Round Lake during June averages 76%. The most humid Junes were 1993, 2010 and 2018 at 83%, and the least humid was 1988 at 56%.
June receives about 6.1 kWh/m²/day of solar energy in Round Lake. The sunniest June was 2012 at 7.3 kWh/m²/day, and the cloudiest was 1996 at 5.3.
Average wind speed in Round Lake during June is 2.9 m/s. The windiest June was 1990 at 3.6 m/s, while the calmest was 1995 at 2.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 18.7°C | 19.1°C | 19.2°C | 19.4°C | 20.7°C | +2°C |
| Avg High | 24.6°C | 24.5°C | 24.6°C | 24.6°C | 26.4°C | +1.8°C |
| Avg Low | 12.7°C | 13.6°C | 13.8°C | 14.1°C | 15.1°C | +2.4°C |
| Avg Rain | 73 mm | 120 mm | 113 mm | 137 mm | 92 mm | +19 mm |
June temperatures in Round Lake have risen by about 2.9°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 1.8°C (2003) to a record high of 37.8°C (1988).
Rainfall in June is a relatively wet time of year, averaging 109 mm, with a wettest year of 241 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.
One of the best times to visit Round Lake
June is one of the best times to visit Round Lake. Expect days averaging 24.8°C and nights around 13.8°C (mean 19.3°C) — warmer than Round Lake's yearly average — with higher rainfall (109 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 | 27.2°C | 21.6°C | 16.0°C | 34.2°C | 6.7°C | 108 mm | 75% | 2.9 m/s | 6.3 |
| 2024 | 25.8°C | 20.7°C | 15.6°C | 31.0°C | 8.3°C | 140 mm | 78% | 3.2 m/s | 6.1 |
| 2023 | 25.4°C | 19.2°C | 13.0°C | 31.9°C | 5.5°C | 44 mm | 69% | 2.5 m/s | 6.3 |
| 2022 | 25.9°C | 20.1°C | 14.4°C | 33.4°C | 9.3°C | 66 mm | 72% | 2.8 m/s | 6.7 |
| 2021 | 28.6°C | 22.7°C | 16.7°C | 33.5°C | 9.0°C | 83 mm | 68% | 2.8 m/s | 6.2 |
| 2020 | 25.3°C | 20.0°C | 14.6°C | 29.8°C | 8.0°C | 107 mm | 79% | 2.7 m/s | 6.8 |
| 2019 | 22.8°C | 17.5°C | 12.2°C | 29.5°C | 6.1°C | 104 mm | 82% | 2.7 m/s | 5.6 |
| 2018 | 24.1°C | 19.4°C | 14.7°C | 30.8°C | 7.0°C | 211 mm | 83% | 3 m/s | 5.7 |
| 2017 | 24.8°C | 19.7°C | 14.6°C | 29.5°C | 9.0°C | 167 mm | 78% | 3.2 m/s | 6.7 |
| 2016 | 25.4°C | 20.2°C | 15.0°C | 30.3°C | 8.7°C | 90 mm | 77% | 2.7 m/s | 6.7 |
| 2015 | 23.9°C | 18.3°C | 12.7°C | 30.5°C | 4.1°C | 143 mm | 78% | 2.8 m/s | 5.7 |
| 2014 | 24.2°C | 18.9°C | 13.7°C | 28.5°C | 7.4°C | 185 mm | 80% | 2.9 m/s | 5.8 |
| 2013 | 23.2°C | 18.4°C | 13.6°C | 28.7°C | 6.7°C | 187 mm | 82% | 2.7 m/s | 5.8 |
| 2012 | 28.6°C | 22.0°C | 15.4°C | 36.1°C | 7.1°C | 21 mm | 60% | 3.1 m/s | 7.3 |
| 2011 | 24.2°C | 19.1°C | 13.9°C | 31.5°C | 8.6°C | 75 mm | 81% | 3 m/s | 5.9 |
| 2010 | 25.0°C | 20.1°C | 15.2°C | 29.5°C | 10.2°C | 192 mm | 83% | 2.9 m/s | 5.8 |
| 2009 | 23.1°C | 18.0°C | 12.8°C | 32.0°C | 3.8°C | 152 mm | 81% | 2.7 m/s | 6 |
| 2008 | 24.5°C | 19.4°C | 14.3°C | 28.8°C | 9.2°C | 192 mm | 81% | 3.2 m/s | 5.8 |
| 2007 | 25.5°C | 20.2°C | 14.9°C | 31.5°C | 7.1°C | 105 mm | 74% | 2.7 m/s | 6.3 |
| 2006 | 24.2°C | 18.8°C | 13.4°C | 30.1°C | 7.8°C | 95 mm | 73% | 2.7 m/s | 6.2 |
| 2005 🔥 | 29.0°C | 23.0°C | 17.1°C | 35.7°C | 10.5°C | 46 mm | 68% | 2.9 m/s | 6.5 |
| 2004 | 23.2°C | 17.8°C | 12.4°C | 29.2°C | 4.9°C | 125 mm | 79% | 2.7 m/s | 6.2 |
| 2003 | 24.2°C | 18.0°C | 11.7°C | 33.0°C | 1.8°C | 52 mm | 67% | 2.7 m/s | 6.3 |
| 2002 | 25.2°C | 20.0°C | 14.8°C | 32.7°C | 6.7°C | 122 mm | 79% | 2.7 m/s | 5.9 |
| 2001 | 24.0°C | 18.9°C | 13.7°C | 30.3°C | 5.4°C | 95 mm | 77% | 2.7 m/s | 6 |
| 2000 | 23.4°C | 18.1°C | 12.7°C | 28.5°C | 6.5°C | 147 mm | 77% | 3.3 m/s | 5.7 |
| 1999 | 24.7°C | 19.8°C | 14.9°C | 29.8°C | 7.1°C | 153 mm | 79% | 2.4 m/s | 6 |
| 1998 | 24.0°C | 19.2°C | 14.4°C | 30.8°C | 5.3°C | 147 mm | 79% | 2.8 m/s | 5.9 |
| 1997 | 24.2°C | 18.5°C | 12.7°C | 30.4°C | 6.8°C | 127 mm | 77% | 2.7 m/s | 6.5 |
| 1996 | 23.7°C | 18.4°C | 13.2°C | 29.9°C | 8.1°C | 155 mm | 83% | 2.7 m/s | 5.3 |
| 1995 | 25.3°C | 19.9°C | 14.5°C | 31.1°C | 7.2°C | 39 mm | 76% | 2.3 m/s | 6.3 |
| 1994 | 26.2°C | 19.9°C | 13.5°C | 34.1°C | 5.3°C | 115 mm | 69% | 2.9 m/s | 6.4 |
| 1993 🌧️ | 22.3°C | 17.4°C | 12.4°C | 27.1°C | 2.6°C | 241 mm | 83% | 3.1 m/s | 5.6 |
| 1992 | 24.1°C | 17.8°C | 11.6°C | 30.3°C | 3.7°C | 38 mm | 67% | 2.4 m/s | 6.1 |
| 1991 | 26.1°C | 20.7°C | 15.4°C | 32.8°C | 10.1°C | 47 mm | 73% | 2.7 m/s | 6.7 |
| 1990 | 24.4°C | 19.0°C | 13.5°C | 29.4°C | 2.8°C | 142 mm | 78% | 3.6 m/s | 5.6 |
| 1989 | 25.2°C | 18.9°C | 12.7°C | 31.3°C | 8.1°C | 51 mm | 70% | 2.6 m/s | 6.2 |
| 1988 | 28.4°C | 20.8°C | 13.2°C | 37.8°C | 5.5°C | 29 mm | 56% | 3.4 m/s | 6.7 |
| 1987 | 27.1°C | 21.0°C | 14.8°C | 35.1°C | 7.2°C | 50 mm | 69% | 2.9 m/s | 6.5 |
| 1986 | 23.1°C | 17.4°C | 11.6°C | 29.3°C | 3.9°C | 108 mm | 81% | 3.1 m/s | 5.5 |
| 1985 | 22.7°C | 17.1°C | 11.5°C | 30.9°C | 6.3°C | 60 mm | 71% | 3.2 m/s | 6.1 |
| 1984 | 24.1°C | 18.8°C | 13.5°C | 27.9°C | 8.8°C | 91 mm | 80% | 3.5 m/s | 5.9 |
| 1983 | 24.0°C | 19.0°C | 14.0°C | 28.7°C | 6.0°C | 76 mm | 79% | 2.8 m/s | — |
| 1982 ❄️ | 21.2°C | 15.2°C | 9.3°C | 27.3°C | 4.6°C | 75 mm | 75% | 2.9 m/s | — |
| 1981 | 25.4°C | 19.7°C | 14.0°C | 31.3°C | 9.3°C | 114 mm | 74% | 3.3 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 24.8°C with lows near 13.8°C (mean 19.3°C), based on 45 years of NASA POWER data.
June averages 109 mm of rainfall in Round Lake, a relatively wet time of year. The wettest on record was 241 mm in 1993.
The hottest June reached 37.8°C in 1988. The coldest dipped to 1.8°C in 2003.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 2.9°C. Daytime highs moved from 23.5°C to 26.6°C and overnight lows from 12.5°C to 15.1°C over the same span.
June is one of the warmer months of the year in Round Lake and a relatively wet time of year, so plan for around 24.8°C daytime highs and 13.8°C at night.
Not quite — June is the 10th coolest month in Round Lake, averaging 19.3°C.
For June in Round Lake, pack light layers you can adjust through the day, with typical highs of 24.8°C and lows of 13.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 76% — quite humid.
Average wind speed in June is 2.9 m/s. The windiest June on record averaged 3.6 m/s (1990).
The wettest June on record was 1993 with 241 mm. On average, June sees 109 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 Round Lake 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.
