June Weather in Boise, United States

Last updated: June 24, 2025

In June, the average temperature in Boise, United States hovers around 21°C (71°F). Expect a range where the minimum dips to 6°C (42°F) and the maximum can soar to 40°C (105°F). During this month, precipitation averages 21 mm (0.8 in) over 3 days, accompanied by a comfortable average humidity of 71%.

June Temperature in Boise

In June in Boise, the average temperature is 21°C (71°F). Maximum temperatures can reach 40°C (105°F), while minimums can drop to as low as 6°C (42°F). It's essential to be prepared for a wide range of temperatures when traveling during this time.

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

The chart illustrates June temperature patterns in Boise, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Boise, June typically has an average temperature of 21°C (71°F), with highs reaching up to 40°C (105°F) and lows dropping to around 6°C (42°F).

Data source: Temperature data for Boise generated using information from the Copernicus Climate Change Service.

June Precipitation in Boise

In Boise in June, the precipitation amount is 21 mm (0.8 in) over a period of 3 days.

June Precipitation Trends in Boise

The chart displays monthly precipitation patterns in Boise, 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 Boise, June typically receives around 21 mm (0.8 inches) of precipitation spread over approximately 3 days.

Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

June Humidity in Boise

In Boise in June humidity is 71%. With an average temperature of 21°C (71°F), this humidity feels like a warm embrace, making it important for travelers to stay hydrated and seek shade during the hottest parts of the day.

June Average Humidity in Boise

This chart illustrates the average monthly humidity levels in Boise, 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 Boise is approximately 71%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in Boise

In Boise in June, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Boise.

Maximum UV Index Levels in Boise for June

The chart shows the monthly maximum UV Index (UVI) for Boise 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 Boise typically reaches 11, which falls under the extreme exposure category.

Data source: Boise 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 Boise Compares to Other Months

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

This table compares monthly weather conditions in Boise, showing how June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (33°F)	49 mm (1.9 inches)	88%	moderate
February Weather	2°C (36°F)	50 mm (2.0 inches)	89%	moderate
March Weather	8°C (46°F)	38 mm (1.5 inches)	85%	high
April Weather	11°C (52°F)	36 mm (1.4 inches)	79%	very high
May Weather	16°C (61°F)	39 mm (1.5 inches)	71%	very high
June Weather	21°C (71°F)	21 mm (0.8 inches)	71%	extreme
July Weather	27°C (81°F)	1 mm (0.0 inches)	66%	extreme
August Weather	26°C (78°F)	8 mm (0.3 inches)	50%	very high
September Weather	20°C (68°F)	10 mm (0.4 inches)	48%	very high
October Weather	11°C (53°F)	22 mm (0.9 inches)	65%	high
November Weather	6°C (43°F)	32 mm (1.3 inches)	84%	moderate
December Weather	1°C (34°F)	40 mm (1.6 inches)	87%	low