Belleville Weather in June (1981–2025)

📍 38.51°N, 89.99°W •
📊

June at a Glance in Belleville

(1981–2025)
Avg High
🔥
28.5°C
Avg Low
❄️
17.9°C
Avg Temp
🌡️
23.2°C
Avg Rain
🌧️
106 mm
Avg Humidity
💧
77%
Avg Wind
🌬️
1.8 m/s
Avg Solar
☀️
6.3
kWh/m²/day
vs Annual
📈
+10.2°C
temp difference
🌡️Warm afternoons🌤️Cool mornings☀️Very sunny🌧️Wet month🍃Light winds💦Humid air

Belleville June Weather Overview

June is one of the warmer months of the year in Belleville, with average highs near 28.5°C and lows around 17.9°C (mean 23.2°C). It is a relatively wet time of year, averaging 106 mm of rainfall and 77% relative humidity across the period.

Belleville June Temperature History (1981–2025)

Range

June is one of the warmer months of the year in Belleville. Across 45 years of records, the warmest June in Belleville was 2010 — when the month averaged 25.5°C — while the coldest was 1982 at 20.3°C. Typical June days reach 28.5°C with nights near 17.9°C. The long-term trend is warming, about 0.4°C per decade.

1981–1985 vs 2021–2025

Avg Temp22.0°C→24.0°C+2°C
Max Temp27.1°C→29.7°C+2.6°C
Min Temp16.9°C→18.4°C+1.5°C

Trend (per decade)

Avg Temp+0.4°C/decade ↗
Max Temp+0.4°C/decade ↗
Min Temp+0.4°C/decade ↗

Distribution of Avg Temp

20.0°C–21.5°C4 yr (9%)
21.5°C–23.0°C13 yr (29%)
23.0°C–24.5°C21 yr (47%)
24.5°C–26.0°C7 yr (16%)

Belleville June Rainfall History (1981–2025)

Range

June is a relatively wet time of year in Belleville, averaging 106 mm of rainfall. The wettest June on record was 2015 with 231 mm, while the driest was 2012 at 27 mm.

Belleville June Humidity History (1981–2025)

Range

Relative humidity in Belleville during June averages 77%. The most humid June was 2015 at 84%, and the least humid was 1988 at 56%.

Belleville June Solar History (1981–2025)

Range

June receives about 6.3 kWh/m²/day of solar energy in Belleville. The sunniest June was 2012 at 7.4 kWh/m²/day, and the cloudiest was 1985 at 5.1.

Belleville June Wind History (1981–2025)

Range

Average wind speed in Belleville during June is 1.8 m/s. The windiest June was 1998 at 2.3 m/s, while the calmest were 1994 and 1995 at 1.5 m/s.

What June Feels Like in Belleville

🌅
Cool
Morning
🌞
Warm
Afternoon
🌆
Mild
Evening
Rain chanceHigh
Outdoor comfort★★★★☆

How June Ranks in Belleville

🔥3rd warmest month of the year
🌧️4th wettest month of the year
☀️1st sunniest month of the year

Ranked against the other 11 months using 1981–2025 averages.

Explore Belleville Weather by Month

Belleville June Averages by Decade

Metric1980s1990s2000s2010s2020sChange
Avg Temp22.7°C22.7°C23.0°C23.9°C24.0°C+1.3°C
Avg High28.2°C27.7°C28.5°C29.0°C29.6°C+1.4°C
Avg Low17.2°C17.7°C17.5°C18.8°C18.3°C+1.1°C
Avg Rain98 mm111 mm102 mm123 mm85 mm-13 mm

Extreme June Records in Belleville

🔥Warmest June42.4°C2012
🧊Coldest June6.7°C1988
🌧️Wettest June231 mm2015
🏜️Driest June27 mm2012
🌬️Windiest June2.3 m/s1998

Key Insights for June

✅

June temperatures in Belleville have risen by about 2°C between 1981–1985 and 2021–2025.

✅

June has ranged from a record low of 6.7°C (1988) to a record high of 42.4°C (2012).

✅

Rainfall in June is a relatively wet time of year, averaging 106 mm, with a wettest year of 231 mm.

Is June a Good Time to Visit Belleville?

One of the best times to visit Belleville

June is one of the best times to visit Belleville. Expect days averaging 28.5°C and nights around 17.9°C (mean 23.2°C) — warmer than Belleville's yearly average — with higher rainfall (106 mm), so conditions are generally comfortable for sightseeing and outdoor plans.

See Belleville's complete weather history All 12 months side by side, 1981–2025 records, annual trends and long-term averages in one place. View full history →

Belleville Weather in June — In Depth

☀️ June climate overview

June is one of the warmer months of the year in Belleville, with average highs near 28.5°C and lows around 17.9°C (mean 23.2°C). It is a relatively wet time of year, averaging 106 mm of rainfall and 77% relative humidity across the period.

🌧️ Rain, humidity & wind in June

June averages 106 mm of rainfall in Belleville, a relatively wet time of year compared with the rest of the year. The wettest June on record saw 231 mm (2015), and the driest just 27 mm (2012). Humidity sits around 77% and average wind speed is 1.8 m/s, with solar radiation averaging 6.3 kWh/m²/day.

📈 How June has changed

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 27.1°C to 29.7°C and overnight lows from 16.9°C to 18.4°C over the same span.
June Weather in Belleville, Year by Year
🔥 warmest❄️ coldest🌧️ wettest
YearAvg HighAvg TempAvg LowHottest DayColdest DayRainfallHumidityWindSolar
202529.0°C24.3°C19.6°C33.6°C13.4°C128 mm82%1.7 m/s5.8
202430.5°C24.6°C18.7°C38.3°C11.7°C95 mm72%2 m/s6.7
202330.4°C23.6°C16.8°C37.0°C9.9°C46 mm62%1.8 m/s6.8
202229.5°C23.6°C17.7°C34.5°C11.3°C52 mm74%1.7 m/s6.9
202129.1°C24.1°C19.0°C33.1°C10.8°C98 mm79%1.8 m/s6.2
202028.8°C23.6°C18.3°C32.7°C13.6°C91 mm78%1.8 m/s6.8
201927.1°C22.5°C17.8°C32.8°C10.7°C140 mm83%1.9 m/s5.8
201829.8°C25.0°C20.1°C33.3°C12.4°C134 mm80%1.6 m/s6.5
201728.3°C22.8°C17.3°C33.0°C11.9°C77 mm75%1.9 m/s7.1
201629.8°C24.6°C19.4°C33.7°C12.3°C47 mm77%1.7 m/s7
2015 🌧️27.9°C23.6°C19.2°C32.1°C11.0°C231 mm84%1.9 m/s5.6
201428.2°C23.8°C19.3°C31.2°C10.8°C128 mm81%2 m/s5.9
201327.5°C22.7°C18.0°C32.6°C10.2°C137 mm82%2 m/s6
201232.2°C24.6°C16.9°C42.4°C8.9°C27 mm57%2 m/s7.4
201129.1°C24.2°C19.3°C34.2°C14.5°C189 mm81%1.9 m/s6.1
2010 🔥30.1°C25.5°C20.9°C33.3°C15.2°C120 mm81%1.7 m/s6.6
200928.7°C23.8°C18.9°C34.2°C9.9°C125 mm81%1.7 m/s6.2
200828.3°C23.1°C17.9°C31.3°C12.5°C80 mm79%2.1 m/s6.5
200728.7°C23.5°C18.2°C33.0°C11.6°C80 mm74%1.7 m/s6.3
200629.4°C23.5°C17.5°C34.4°C13.1°C83 mm72%1.8 m/s6.7
200530.6°C24.8°C19.0°C37.6°C13.1°C47 mm71%1.8 m/s6.8
200427.1°C21.9°C16.7°C31.9°C10.3°C72 mm77%1.7 m/s6.5
200325.9°C20.4°C14.9°C31.0°C6.9°C157 mm77%1.7 m/s6.1
200228.8°C23.5°C18.3°C31.9°C11.5°C86 mm79%1.7 m/s6.7
200129.3°C23.1°C16.9°C35.3°C11.0°C83 mm69%1.8 m/s6.7
200028.5°C22.6°C16.7°C34.3°C9.1°C201 mm72%2.1 m/s5.6
199928.0°C22.8°C17.6°C32.6°C9.0°C114 mm78%1.8 m/s5.8
199828.3°C23.5°C18.6°C33.1°C9.6°C200 mm80%2.3 m/s5.9
199727.0°C22.1°C17.3°C32.1°C12.2°C118 mm81%1.6 m/s5.6
199627.9°C22.8°C17.6°C33.5°C10.1°C109 mm78%1.6 m/s6.1
199526.8°C22.1°C17.5°C30.4°C10.7°C126 mm80%1.5 m/s6
199428.2°C23.4°C18.7°C31.3°C12.2°C112 mm81%1.5 m/s6.2
199327.3°C22.3°C17.4°C31.8°C8.3°C150 mm82%1.7 m/s5.8
199227.0°C21.2°C15.5°C32.6°C7.5°C51 mm72%1.9 m/s6
199128.9°C23.9°C18.9°C34.6°C13.0°C43 mm79%1.7 m/s6.4
199027.8°C22.7°C17.7°C31.7°C8.4°C90 mm81%2.1 m/s6.1
198927.0°C21.8°C16.5°C31.2°C9.0°C87 mm77%1.7 m/s6.4
198831.2°C23.6°C16.0°C39.2°C6.7°C41 mm56%1.8 m/s6.7
198731.0°C25.0°C19.0°C37.4°C12.3°C97 mm68%1.6 m/s6.3
198628.9°C23.8°C18.7°C33.5°C12.4°C79 mm79%1.8 m/s6.5
198525.8°C20.8°C15.9°C31.1°C7.1°C195 mm81%1.9 m/s5.1
198428.7°C23.6°C18.6°C31.5°C10.8°C46 mm79%2 m/s6.1
198327.0°C22.0°C16.9°C30.6°C8.3°C103 mm79%1.7 m/s—
1982 ❄️25.6°C20.3°C15.1°C30.5°C9.2°C101 mm78%1.8 m/s—
198128.2°C23.2°C18.1°C31.6°C12.1°C137 mm80%2 m/s—

Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.

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Belleville June Weather — FAQ

What is the average temperature in Belleville in June?▼

The average high in June is around 28.5°C with lows near 17.9°C (mean 23.2°C), based on 45 years of NASA POWER data.

Does it rain a lot in Belleville in June?▼

June averages 106 mm of rainfall in Belleville, a relatively wet time of year. The wettest on record was 231 mm in 2015.

What was the hottest June on record in Belleville?▼

The hottest June reached 42.4°C in 2012. The coldest dipped to 6.7°C in 1988.

Has June in Belleville gotten warmer over time?▼

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 27.1°C to 29.7°C and overnight lows from 16.9°C to 18.4°C over the same span.

Is June a good time to visit Belleville?▼

June is one of the warmer months of the year in Belleville and a relatively wet time of year, so plan for around 28.5°C daytime highs and 17.9°C at night.

Is June the coldest month in Belleville?▼

Not quite — June is the 10th coolest month in Belleville, averaging 23.2°C.

What should I pack for Belleville in June?▼

For June in Belleville, pack light layers you can adjust through the day, with typical highs of 28.5°C and lows of 17.9°C. Bring an umbrella or light rain jacket too.

Is Belleville humid in June?▼

Relative humidity in June averages 77% — quite humid.

How windy is Belleville in June?▼

Average wind speed in June is 1.8 m/s. The windiest June on record averaged 2.3 m/s (1998).

Which June had the most rainfall in Belleville?▼

The wettest June on record was 2015 with 231 mm. On average, June sees 106 mm.

Where does this June weather data come from?▼

All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.

Other Illinois cities

Explore how the weather in Belleville 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.