June is one of the warmer months of the year in Normal, with average highs near 26.8°C and lows around 15.9°C (mean 21.4°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 Normal. Across 45 years of records, the warmest June in Normal was 2005 — when the month averaged 23.7°C — while the coldest was 1982 at 18°C. Typical June days reach 26.8°C with nights near 15.9°C. The long-term trend is warming, about 0.5°C per decade.
June is a relatively wet time of year in Normal, averaging 109 mm of rainfall. The wettest June on record was 2015 with 241 mm, while the driest was 1988 at 15 mm.
Relative humidity in Normal during June averages 76%. The most humid June was 2009 at 83%, and the least humid was 1988 at 51%.
June receives about 6.2 kWh/m²/day of solar energy in Normal. The sunniest June was 2017 at 7.2 kWh/m²/day, and the cloudiest were 1985, 1998 and 2015 at 5.6.
Average wind speed in Normal during June is 2.7 m/s. The windiest June was 1990 at 3.3 m/s, while the calmest was 1995 at 2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 20.7°C | 20.8°C | 21.2°C | 22.1°C | 22.3°C | +1.6°C |
| Avg High | 26.5°C | 26.0°C | 26.6°C | 27.3°C | 28.0°C | +1.5°C |
| Avg Low | 14.9°C | 15.6°C | 15.7°C | 16.9°C | 16.6°C | +1.7°C |
| Avg Rain | 86 mm | 114 mm | 97 mm | 142 mm | 101 mm | +15 mm |
June temperatures in Normal have risen by about 2.4°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 4.2°C (2003) to a record high of 41.2°C (2012).
Rainfall in June is a relatively wet time of year, averaging 109 mm, with a wettest year of 241 mm.
One of the best times to visit Normal
June is one of the best times to visit Normal. Expect days averaging 26.8°C and nights around 15.9°C (mean 21.4°C) — warmer than Normal'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 | 28.0°C | 22.8°C | 17.5°C | 32.6°C | 8.9°C | 135 mm | 79% | 2.6 m/s | 6.3 |
| 2024 | 27.9°C | 22.4°C | 17.0°C | 32.2°C | 9.7°C | 66 mm | 75% | 3 m/s | 6.4 |
| 2023 | 28.9°C | 21.9°C | 15.0°C | 33.9°C | 7.4°C | 49 mm | 61% | 2.6 m/s | 6.4 |
| 2022 | 27.9°C | 21.9°C | 16.0°C | 33.0°C | 9.6°C | 46 mm | 72% | 2.5 m/s | 6.6 |
| 2021 | 27.9°C | 22.9°C | 17.9°C | 33.0°C | 9.8°C | 204 mm | 76% | 2.7 m/s | 6.1 |
| 2020 | 27.1°C | 21.7°C | 16.3°C | 30.0°C | 8.8°C | 105 mm | 78% | 2.6 m/s | 6.6 |
| 2019 | 25.7°C | 20.8°C | 15.9°C | 31.8°C | 9.0°C | 122 mm | 82% | 2.8 m/s | 5.9 |
| 2018 | 28.4°C | 23.3°C | 18.1°C | 32.1°C | 10.9°C | 175 mm | 80% | 2.4 m/s | 6.1 |
| 2017 | 27.2°C | 21.7°C | 16.1°C | 31.3°C | 9.9°C | 102 mm | 74% | 2.9 m/s | 7.2 |
| 2016 | 27.8°C | 22.4°C | 17.0°C | 32.2°C | 10.7°C | 108 mm | 76% | 2.5 m/s | 7.1 |
| 2015 🌧️ | 26.2°C | 21.3°C | 16.4°C | 31.0°C | 7.5°C | 241 mm | 82% | 2.8 m/s | 5.6 |
| 2014 | 27.1°C | 22.3°C | 17.4°C | 29.7°C | 10.6°C | 193 mm | 79% | 2.9 m/s | 6.2 |
| 2013 | 25.5°C | 20.9°C | 16.2°C | 30.9°C | 8.3°C | 94 mm | 83% | 2.7 m/s | 5.8 |
| 2012 | 30.2°C | 23.2°C | 16.1°C | 41.2°C | 7.8°C | 35 mm | 58% | 2.9 m/s | 7 |
| 2011 | 26.8°C | 21.9°C | 16.9°C | 31.8°C | 10.5°C | 137 mm | 81% | 2.9 m/s | 5.7 |
| 2010 | 27.8°C | 23.4°C | 19.0°C | 30.5°C | 12.5°C | 211 mm | 83% | 2.5 m/s | 6.2 |
| 2009 | 25.8°C | 21.1°C | 16.4°C | 31.6°C | 5.2°C | 130 mm | 83% | 2.6 m/s | 5.8 |
| 2008 | 26.6°C | 21.7°C | 16.7°C | 30.4°C | 11.3°C | 145 mm | 80% | 3.1 m/s | 6.5 |
| 2007 | 26.7°C | 21.4°C | 16.0°C | 31.8°C | 8.7°C | 101 mm | 76% | 2.6 m/s | 6.2 |
| 2006 | 26.5°C | 20.7°C | 15.0°C | 32.1°C | 8.1°C | 53 mm | 72% | 2.4 m/s | 6.3 |
| 2005 🔥 | 29.5°C | 23.7°C | 17.9°C | 35.8°C | 10.8°C | 38 mm | 71% | 2.8 m/s | 6.4 |
| 2004 | 25.8°C | 20.4°C | 15.0°C | 30.8°C | 7.2°C | 80 mm | 77% | 2.6 m/s | 6.4 |
| 2003 | 25.6°C | 19.3°C | 13.1°C | 31.9°C | 4.2°C | 95 mm | 71% | 2.7 m/s | 6.1 |
| 2002 | 27.4°C | 22.2°C | 17.0°C | 31.0°C | 10.7°C | 103 mm | 80% | 2.5 m/s | 6.1 |
| 2001 | 25.6°C | 20.2°C | 14.7°C | 30.8°C | 7.3°C | 84 mm | 76% | 2.5 m/s | 6.3 |
| 2000 | 26.7°C | 20.8°C | 15.0°C | 32.0°C | 6.0°C | 137 mm | 71% | 3.2 m/s | 5.9 |
| 1999 | 26.2°C | 21.2°C | 16.3°C | 31.2°C | 6.8°C | 137 mm | 80% | 2.4 m/s | 6.1 |
| 1998 | 25.5°C | 21.0°C | 16.5°C | 31.8°C | 6.7°C | 182 mm | 83% | 3 m/s | 5.6 |
| 1997 | 26.4°C | 20.9°C | 15.4°C | 32.0°C | 9.4°C | 84 mm | 78% | 2.7 m/s | 5.7 |
| 1996 | 25.9°C | 20.8°C | 15.6°C | 30.9°C | 9.1°C | 90 mm | 80% | 2.5 m/s | 5.7 |
| 1995 | 25.6°C | 20.5°C | 15.4°C | 29.5°C | 9.6°C | 76 mm | 81% | 2 m/s | 6.2 |
| 1994 | 26.6°C | 21.2°C | 15.9°C | 31.1°C | 7.1°C | 78 mm | 78% | 2.4 m/s | 6.3 |
| 1993 | 25.0°C | 20.0°C | 15.0°C | 29.4°C | 5.1°C | 195 mm | 83% | 2.9 m/s | 5.7 |
| 1992 | 25.4°C | 19.1°C | 12.8°C | 31.1°C | 4.6°C | 56 mm | 70% | 2.4 m/s | 6 |
| 1991 | 27.5°C | 22.2°C | 16.9°C | 31.5°C | 10.9°C | 29 mm | 78% | 2.3 m/s | 6.7 |
| 1990 | 26.1°C | 20.9°C | 15.8°C | 30.0°C | 5.7°C | 216 mm | 80% | 3.3 m/s | 5.8 |
| 1989 | 26.4°C | 20.5°C | 14.6°C | 31.3°C | 7.9°C | 40 mm | 72% | 2.3 m/s | 6.3 |
| 1988 | 30.4°C | 22.4°C | 14.3°C | 39.3°C | 6.0°C | 15 mm | 51% | 2.9 m/s | 6.7 |
| 1987 | 28.2°C | 22.3°C | 16.4°C | 35.0°C | 8.9°C | 82 mm | 71% | 2.5 m/s | 6.5 |
| 1986 | 26.6°C | 21.1°C | 15.6°C | 31.0°C | 6.7°C | 144 mm | 80% | 2.7 m/s | 5.9 |
| 1985 | 24.5°C | 18.9°C | 13.3°C | 30.1°C | 6.1°C | 107 mm | 77% | 2.8 m/s | 5.6 |
| 1984 | 26.6°C | 21.4°C | 16.2°C | 29.8°C | 10.1°C | 52 mm | 80% | 3.2 m/s | 6.1 |
| 1983 | 26.1°C | 20.9°C | 15.7°C | 29.9°C | 7.3°C | 104 mm | 79% | 2.4 m/s | — |
| 1982 ❄️ | 23.8°C | 18.0°C | 12.3°C | 28.5°C | 6.0°C | 74 mm | 76% | 2.5 m/s | — |
| 1981 | 26.2°C | 21.0°C | 15.7°C | 30.1°C | 10.6°C | 161 mm | 79% | 2.9 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 26.8°C with lows near 15.9°C (mean 21.4°C), based on 45 years of NASA POWER data.
June averages 109 mm of rainfall in Normal, a relatively wet time of year. The wettest on record was 241 mm in 2015.
The hottest June reached 41.2°C in 2012. The coldest dipped to 4.2°C in 2003.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 2.4°C. Daytime highs moved from 25.4°C to 28.1°C and overnight lows from 14.6°C to 16.7°C over the same span.
June is one of the warmer months of the year in Normal and a relatively wet time of year, so plan for around 26.8°C daytime highs and 15.9°C at night.
Not quite — June is the 10th coolest month in Normal, averaging 21.4°C.
For June in Normal, pack light layers you can adjust through the day, with typical highs of 26.8°C and lows of 15.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 76% — quite humid.
Average wind speed in June is 2.7 m/s. The windiest June on record averaged 3.3 m/s (1990).
The wettest June on record was 2015 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 Normal 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.
