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June Weather in Janesville, United States

Last updated: June 24, 2025

In June, the average temperature in Janesville, United States hovers around 19°C (66°F). Expect a minimum temperature dipping to 0°C (32°F) and a maximum reaching up to 36°C (98°F). Precipitation is fairly light, with an average of just 10 mm (0.4 in) spread over 2 days. The atmosphere is characterized by an average humidity of 67%, making it a unique month to experience.

June Temperature in Janesville

In June in Janesville, the average temperature is 19°C (66°F). Maximums can reach 36°C (98°F) and minimums can be as low as 0°C (32°F). It's advisable to pack both light clothing for the warm days and warmer layers for the cooler nights when traveling during this time.

June Weather in Janesville: Daily Temperature Highs, Lows, and Averages

The chart illustrates June temperature patterns in Janesville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Janesville, June typically has an average temperature of 19°C (66°F), with highs reaching up to 36°C (98°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec313236465466747263504030
Data source: Temperature data for Janesville generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

June Precipitation in Janesville

In Janesville in June, the precipitation amount is 10 mm (0.4 in) over a period of 2 days.

June Precipitation Trends in Janesville

The chart displays monthly precipitation patterns in Janesville, with values for each month alongside June’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June’s conditions compare to those of other months. In Janesville, June typically receives around 10 mm (0.4 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec102110854344107819344775
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in Janesville

In Janesville in June humidity is 67%. With an average temperature of 19°C (66°F), this humidity feels like a warm embrace that envelops you as you travel, making each step a little heavier but still comfortable enough to explore the vibrant surroundings.

June Average Humidity in Janesville

This chart illustrates the average monthly humidity levels in Janesville, with June’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In June, average humidity in Janesville is approximately 67%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%87%86%83%72%67%56%42%46%67%86%86%
Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in Janesville

In Janesville in June, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Janesville.

Maximum UV Index Levels in Janesville for June

The chart shows the monthly maximum UV Index (UVI) for Janesville in June, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In June, the maximum UV index in Janesville typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec4589111211119743
Data source: Janesville June UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How June Weather in Janesville Compares to Other Months

Weather in Janesville varies notably across the year, with each month offering distinct climate conditions. This page compares June’s weather to other months in Janesville, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Janesville, showing how June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)102 mm (4.0 inches)86%moderate
February Weather0°C (32°F)110 mm (4.3 inches)87%moderate
March Weather2°C (37°F)85 mm (3.4 inches)86%very high
April Weather8°C (46°F)43 mm (1.7 inches)83%very high
May Weather12°C (55°F)44 mm (1.7 inches)72%extreme
June Weather19°C (66°F)10 mm (0.4 inches)67%extreme
July Weather23°C (74°F)7 mm (0.3 inches)56%extreme
August Weather22°C (72°F)8 mm (0.3 inches)42%extreme
September Weather17°C (63°F)19 mm (0.7 inches)46%very high
October Weather10°C (50°F)34 mm (1.3 inches)67%high
November Weather4°C (40°F)47 mm (1.8 inches)86%moderate
December Weather-1°C (31°F)75 mm (3.0 inches)86%moderate

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